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ad321293 MM |
1 | /* Perform the semantic phase of parsing, i.e., the process of |
2 | building tree structure, checking semantic consistency, and | |
3 | building RTL. These routines are used both during actual parsing | |
c8094d83 | 4 | and during the instantiation of template functions. |
ad321293 | 5 | |
b2ebd268 | 6 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
66647d44 | 7 | 2008, 2009 Free Software Foundation, Inc. |
ad321293 | 8 | Written by Mark Mitchell (mmitchell@usa.net) based on code found |
c8094d83 | 9 | formerly in parse.y and pt.c. |
ad321293 | 10 | |
f5adbb8d | 11 | This file is part of GCC. |
ad321293 | 12 | |
f5adbb8d | 13 | GCC is free software; you can redistribute it and/or modify it |
ad321293 | 14 | under the terms of the GNU General Public License as published by |
e77f031d | 15 | the Free Software Foundation; either version 3, or (at your option) |
ad321293 | 16 | any later version. |
c8094d83 | 17 | |
f5adbb8d | 18 | GCC is distributed in the hope that it will be useful, but |
ad321293 MM |
19 | WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | General Public License for more details. | |
c8094d83 | 22 | |
e77f031d NC |
23 | You should have received a copy of the GNU General Public License |
24 | along with GCC; see the file COPYING3. If not see | |
25 | <http://www.gnu.org/licenses/>. */ | |
ad321293 MM |
26 | |
27 | #include "config.h" | |
8d052bc7 | 28 | #include "system.h" |
4977bab6 ZW |
29 | #include "coretypes.h" |
30 | #include "tm.h" | |
ad321293 MM |
31 | #include "tree.h" |
32 | #include "cp-tree.h" | |
5f070bc7 | 33 | #include "c-common.h" |
25af8512 | 34 | #include "tree-inline.h" |
6de9cd9a | 35 | #include "tree-mudflap.h" |
ad321293 | 36 | #include "except.h" |
12027a89 | 37 | #include "toplev.h" |
84df082b | 38 | #include "flags.h" |
d9b2d9da | 39 | #include "rtl.h" |
d6684bc8 | 40 | #include "expr.h" |
225ff119 | 41 | #include "output.h" |
ea11ca7e | 42 | #include "timevar.h" |
2b85879e | 43 | #include "debug.h" |
6de9cd9a | 44 | #include "diagnostic.h" |
8cd2462c | 45 | #include "cgraph.h" |
325c3691 | 46 | #include "tree-iterator.h" |
3e1f1ba5 | 47 | #include "vec.h" |
44d10c10 | 48 | #include "target.h" |
726a989a | 49 | #include "gimple.h" |
ad321293 MM |
50 | |
51 | /* There routines provide a modular interface to perform many parsing | |
52 | operations. They may therefore be used during actual parsing, or | |
53 | during template instantiation, which may be regarded as a | |
0b4d5576 | 54 | degenerate form of parsing. */ |
ad321293 | 55 | |
3a978d72 | 56 | static tree maybe_convert_cond (tree); |
6de9cd9a | 57 | static tree finalize_nrv_r (tree *, int *, void *); |
4985cde3 | 58 | |
558475f0 | 59 | |
8d241e0b KL |
60 | /* Deferred Access Checking Overview |
61 | --------------------------------- | |
62 | ||
63 | Most C++ expressions and declarations require access checking | |
64 | to be performed during parsing. However, in several cases, | |
65 | this has to be treated differently. | |
66 | ||
67 | For member declarations, access checking has to be deferred | |
68 | until more information about the declaration is known. For | |
69 | example: | |
70 | ||
71 | class A { | |
0cbd7506 | 72 | typedef int X; |
8d241e0b | 73 | public: |
0cbd7506 | 74 | X f(); |
8d241e0b KL |
75 | }; |
76 | ||
77 | A::X A::f(); | |
78 | A::X g(); | |
79 | ||
80 | When we are parsing the function return type `A::X', we don't | |
81 | really know if this is allowed until we parse the function name. | |
82 | ||
83 | Furthermore, some contexts require that access checking is | |
84 | never performed at all. These include class heads, and template | |
85 | instantiations. | |
86 | ||
87 | Typical use of access checking functions is described here: | |
c8094d83 | 88 | |
8d241e0b KL |
89 | 1. When we enter a context that requires certain access checking |
90 | mode, the function `push_deferring_access_checks' is called with | |
91 | DEFERRING argument specifying the desired mode. Access checking | |
92 | may be performed immediately (dk_no_deferred), deferred | |
93 | (dk_deferred), or not performed (dk_no_check). | |
94 | ||
95 | 2. When a declaration such as a type, or a variable, is encountered, | |
96 | the function `perform_or_defer_access_check' is called. It | |
d6b418fa | 97 | maintains a VEC of all deferred checks. |
8d241e0b KL |
98 | |
99 | 3. The global `current_class_type' or `current_function_decl' is then | |
100 | setup by the parser. `enforce_access' relies on these information | |
101 | to check access. | |
102 | ||
103 | 4. Upon exiting the context mentioned in step 1, | |
104 | `perform_deferred_access_checks' is called to check all declaration | |
d6b418fa | 105 | stored in the VEC. `pop_deferring_access_checks' is then |
8d241e0b KL |
106 | called to restore the previous access checking mode. |
107 | ||
108 | In case of parsing error, we simply call `pop_deferring_access_checks' | |
109 | without `perform_deferred_access_checks'. */ | |
110 | ||
d1b38208 | 111 | typedef struct GTY(()) deferred_access { |
d6b418fa | 112 | /* A VEC representing name-lookups for which we have deferred |
3e1f1ba5 NS |
113 | checking access controls. We cannot check the accessibility of |
114 | names used in a decl-specifier-seq until we know what is being | |
115 | declared because code like: | |
116 | ||
c8094d83 | 117 | class A { |
0cbd7506 MS |
118 | class B {}; |
119 | B* f(); | |
3e1f1ba5 NS |
120 | } |
121 | ||
122 | A::B* A::f() { return 0; } | |
123 | ||
d6b418fa SM |
124 | is valid, even though `A::B' is not generally accessible. */ |
125 | VEC (deferred_access_check,gc)* GTY(()) deferred_access_checks; | |
c8094d83 | 126 | |
3e1f1ba5 NS |
127 | /* The current mode of access checks. */ |
128 | enum deferring_kind deferring_access_checks_kind; | |
c8094d83 | 129 | |
3e1f1ba5 | 130 | } deferred_access; |
d4e6fecb NS |
131 | DEF_VEC_O (deferred_access); |
132 | DEF_VEC_ALLOC_O (deferred_access,gc); | |
3e1f1ba5 | 133 | |
cf22909c | 134 | /* Data for deferred access checking. */ |
d4e6fecb | 135 | static GTY(()) VEC(deferred_access,gc) *deferred_access_stack; |
3e1f1ba5 | 136 | static GTY(()) unsigned deferred_access_no_check; |
cf22909c KL |
137 | |
138 | /* Save the current deferred access states and start deferred | |
139 | access checking iff DEFER_P is true. */ | |
140 | ||
572c2b17 AP |
141 | void |
142 | push_deferring_access_checks (deferring_kind deferring) | |
cf22909c | 143 | { |
78757caa KL |
144 | /* For context like template instantiation, access checking |
145 | disabling applies to all nested context. */ | |
3e1f1ba5 NS |
146 | if (deferred_access_no_check || deferring == dk_no_check) |
147 | deferred_access_no_check++; | |
cf22909c | 148 | else |
3e1f1ba5 NS |
149 | { |
150 | deferred_access *ptr; | |
cf22909c | 151 | |
d4e6fecb | 152 | ptr = VEC_safe_push (deferred_access, gc, deferred_access_stack, NULL); |
d6b418fa | 153 | ptr->deferred_access_checks = NULL; |
3e1f1ba5 NS |
154 | ptr->deferring_access_checks_kind = deferring; |
155 | } | |
cf22909c KL |
156 | } |
157 | ||
158 | /* Resume deferring access checks again after we stopped doing | |
159 | this previously. */ | |
160 | ||
572c2b17 AP |
161 | void |
162 | resume_deferring_access_checks (void) | |
cf22909c | 163 | { |
3e1f1ba5 NS |
164 | if (!deferred_access_no_check) |
165 | VEC_last (deferred_access, deferred_access_stack) | |
166 | ->deferring_access_checks_kind = dk_deferred; | |
cf22909c KL |
167 | } |
168 | ||
169 | /* Stop deferring access checks. */ | |
170 | ||
572c2b17 AP |
171 | void |
172 | stop_deferring_access_checks (void) | |
cf22909c | 173 | { |
3e1f1ba5 NS |
174 | if (!deferred_access_no_check) |
175 | VEC_last (deferred_access, deferred_access_stack) | |
176 | ->deferring_access_checks_kind = dk_no_deferred; | |
cf22909c KL |
177 | } |
178 | ||
179 | /* Discard the current deferred access checks and restore the | |
180 | previous states. */ | |
181 | ||
572c2b17 AP |
182 | void |
183 | pop_deferring_access_checks (void) | |
cf22909c | 184 | { |
3e1f1ba5 NS |
185 | if (deferred_access_no_check) |
186 | deferred_access_no_check--; | |
187 | else | |
188 | VEC_pop (deferred_access, deferred_access_stack); | |
cf22909c KL |
189 | } |
190 | ||
c8094d83 MS |
191 | /* Returns a TREE_LIST representing the deferred checks. |
192 | The TREE_PURPOSE of each node is the type through which the | |
cf22909c KL |
193 | access occurred; the TREE_VALUE is the declaration named. |
194 | */ | |
195 | ||
d6b418fa | 196 | VEC (deferred_access_check,gc)* |
572c2b17 | 197 | get_deferred_access_checks (void) |
cf22909c | 198 | { |
3e1f1ba5 NS |
199 | if (deferred_access_no_check) |
200 | return NULL; | |
201 | else | |
202 | return (VEC_last (deferred_access, deferred_access_stack) | |
203 | ->deferred_access_checks); | |
cf22909c KL |
204 | } |
205 | ||
206 | /* Take current deferred checks and combine with the | |
207 | previous states if we also defer checks previously. | |
208 | Otherwise perform checks now. */ | |
209 | ||
572c2b17 AP |
210 | void |
211 | pop_to_parent_deferring_access_checks (void) | |
cf22909c | 212 | { |
3e1f1ba5 NS |
213 | if (deferred_access_no_check) |
214 | deferred_access_no_check--; | |
215 | else | |
216 | { | |
d6b418fa | 217 | VEC (deferred_access_check,gc) *checks; |
3e1f1ba5 NS |
218 | deferred_access *ptr; |
219 | ||
220 | checks = (VEC_last (deferred_access, deferred_access_stack) | |
221 | ->deferred_access_checks); | |
222 | ||
223 | VEC_pop (deferred_access, deferred_access_stack); | |
224 | ptr = VEC_last (deferred_access, deferred_access_stack); | |
225 | if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
226 | { | |
227 | /* Check access. */ | |
d6b418fa | 228 | perform_access_checks (checks); |
3e1f1ba5 NS |
229 | } |
230 | else | |
231 | { | |
232 | /* Merge with parent. */ | |
d6b418fa SM |
233 | int i, j; |
234 | deferred_access_check *chk, *probe; | |
c8094d83 | 235 | |
d6b418fa SM |
236 | for (i = 0 ; |
237 | VEC_iterate (deferred_access_check, checks, i, chk) ; | |
238 | ++i) | |
3e1f1ba5 | 239 | { |
d6b418fa SM |
240 | for (j = 0 ; |
241 | VEC_iterate (deferred_access_check, | |
242 | ptr->deferred_access_checks, j, probe) ; | |
243 | ++j) | |
244 | { | |
245 | if (probe->binfo == chk->binfo && | |
246 | probe->decl == chk->decl && | |
247 | probe->diag_decl == chk->diag_decl) | |
248 | goto found; | |
249 | } | |
3e1f1ba5 | 250 | /* Insert into parent's checks. */ |
d6b418fa SM |
251 | VEC_safe_push (deferred_access_check, gc, |
252 | ptr->deferred_access_checks, chk); | |
3e1f1ba5 NS |
253 | found:; |
254 | } | |
255 | } | |
256 | } | |
cf22909c KL |
257 | } |
258 | ||
6b648482 MM |
259 | /* Perform the access checks in CHECKS. The TREE_PURPOSE of each node |
260 | is the BINFO indicating the qualifying scope used to access the | |
261 | DECL node stored in the TREE_VALUE of the node. */ | |
262 | ||
263 | void | |
d6b418fa | 264 | perform_access_checks (VEC (deferred_access_check,gc)* checks) |
6b648482 | 265 | { |
d6b418fa SM |
266 | int i; |
267 | deferred_access_check *chk; | |
268 | ||
269 | if (!checks) | |
270 | return; | |
271 | ||
272 | for (i = 0 ; VEC_iterate (deferred_access_check, checks, i, chk) ; ++i) | |
273 | enforce_access (chk->binfo, chk->decl, chk->diag_decl); | |
6b648482 MM |
274 | } |
275 | ||
25903d03 KL |
276 | /* Perform the deferred access checks. |
277 | ||
278 | After performing the checks, we still have to keep the list | |
279 | `deferred_access_stack->deferred_access_checks' since we may want | |
280 | to check access for them again later in a different context. | |
281 | For example: | |
282 | ||
283 | class A { | |
284 | typedef int X; | |
285 | static X a; | |
286 | }; | |
287 | A::X A::a, x; // No error for `A::a', error for `x' | |
288 | ||
289 | We have to perform deferred access of `A::X', first with `A::a', | |
290 | next with `x'. */ | |
cf22909c | 291 | |
572c2b17 AP |
292 | void |
293 | perform_deferred_access_checks (void) | |
cf22909c | 294 | { |
6b648482 | 295 | perform_access_checks (get_deferred_access_checks ()); |
cf22909c KL |
296 | } |
297 | ||
298 | /* Defer checking the accessibility of DECL, when looked up in | |
02022f3a | 299 | BINFO. DIAG_DECL is the declaration to use to print diagnostics. */ |
cf22909c | 300 | |
572c2b17 | 301 | void |
02022f3a | 302 | perform_or_defer_access_check (tree binfo, tree decl, tree diag_decl) |
cf22909c | 303 | { |
d6b418fa | 304 | int i; |
3e1f1ba5 | 305 | deferred_access *ptr; |
d6b418fa SM |
306 | deferred_access_check *chk; |
307 | deferred_access_check *new_access; | |
308 | ||
cf22909c | 309 | |
3e1f1ba5 NS |
310 | /* Exit if we are in a context that no access checking is performed. |
311 | */ | |
312 | if (deferred_access_no_check) | |
0f2a66c9 | 313 | return; |
c8094d83 | 314 | |
50bc768d | 315 | gcc_assert (TREE_CODE (binfo) == TREE_BINFO); |
0f2a66c9 | 316 | |
3e1f1ba5 | 317 | ptr = VEC_last (deferred_access, deferred_access_stack); |
c8094d83 | 318 | |
cf22909c | 319 | /* If we are not supposed to defer access checks, just check now. */ |
3e1f1ba5 | 320 | if (ptr->deferring_access_checks_kind == dk_no_deferred) |
cf22909c | 321 | { |
02022f3a | 322 | enforce_access (binfo, decl, diag_decl); |
cf22909c KL |
323 | return; |
324 | } | |
c8094d83 | 325 | |
cf22909c | 326 | /* See if we are already going to perform this check. */ |
d6b418fa SM |
327 | for (i = 0 ; |
328 | VEC_iterate (deferred_access_check, | |
329 | ptr->deferred_access_checks, i, chk) ; | |
330 | ++i) | |
331 | { | |
332 | if (chk->decl == decl && chk->binfo == binfo && | |
333 | chk->diag_decl == diag_decl) | |
334 | { | |
335 | return; | |
336 | } | |
337 | } | |
cf22909c | 338 | /* If not, record the check. */ |
d6b418fa SM |
339 | new_access = |
340 | VEC_safe_push (deferred_access_check, gc, | |
341 | ptr->deferred_access_checks, 0); | |
342 | new_access->binfo = binfo; | |
343 | new_access->decl = decl; | |
344 | new_access->diag_decl = diag_decl; | |
cf22909c KL |
345 | } |
346 | ||
838dfd8a | 347 | /* Returns nonzero if the current statement is a full expression, |
f2c5f623 BC |
348 | i.e. temporaries created during that statement should be destroyed |
349 | at the end of the statement. */ | |
35b1567d | 350 | |
f2c5f623 | 351 | int |
3a978d72 | 352 | stmts_are_full_exprs_p (void) |
f2c5f623 | 353 | { |
ae499cce MM |
354 | return current_stmt_tree ()->stmts_are_full_exprs_p; |
355 | } | |
356 | ||
ed3d0b14 ILT |
357 | /* T is a statement. Add it to the statement-tree. This is the C++ |
358 | version. The C/ObjC frontends have a slightly different version of | |
359 | this function. */ | |
360 | ||
361 | tree | |
362 | add_stmt (tree t) | |
363 | { | |
364 | enum tree_code code = TREE_CODE (t); | |
365 | ||
366 | if (EXPR_P (t) && code != LABEL_EXPR) | |
367 | { | |
368 | if (!EXPR_HAS_LOCATION (t)) | |
369 | SET_EXPR_LOCATION (t, input_location); | |
370 | ||
371 | /* When we expand a statement-tree, we must know whether or not the | |
372 | statements are full-expressions. We record that fact here. */ | |
373 | STMT_IS_FULL_EXPR_P (t) = stmts_are_full_exprs_p (); | |
374 | } | |
375 | ||
376 | /* Add T to the statement-tree. Non-side-effect statements need to be | |
377 | recorded during statement expressions. */ | |
378 | append_to_statement_list_force (t, &cur_stmt_list); | |
379 | ||
380 | return t; | |
381 | } | |
382 | ||
e8924938 | 383 | /* Returns the stmt_tree to which statements are currently being added. */ |
ae499cce MM |
384 | |
385 | stmt_tree | |
3a978d72 | 386 | current_stmt_tree (void) |
ae499cce | 387 | { |
c8094d83 MS |
388 | return (cfun |
389 | ? &cfun->language->base.x_stmt_tree | |
ae499cce | 390 | : &scope_chain->x_stmt_tree); |
f2c5f623 | 391 | } |
35b1567d | 392 | |
543a0daa RH |
393 | /* If statements are full expressions, wrap STMT in a CLEANUP_POINT_EXPR. */ |
394 | ||
395 | static tree | |
396 | maybe_cleanup_point_expr (tree expr) | |
397 | { | |
398 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
0ad28dde | 399 | expr = fold_build_cleanup_point_expr (TREE_TYPE (expr), expr); |
543a0daa RH |
400 | return expr; |
401 | } | |
402 | ||
0ad28dde | 403 | /* Like maybe_cleanup_point_expr except have the type of the new expression be |
22423a1f KH |
404 | void so we don't need to create a temporary variable to hold the inner |
405 | expression. The reason why we do this is because the original type might be | |
406 | an aggregate and we cannot create a temporary variable for that type. */ | |
0ad28dde AP |
407 | |
408 | static tree | |
409 | maybe_cleanup_point_expr_void (tree expr) | |
410 | { | |
411 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
412 | expr = fold_build_cleanup_point_expr (void_type_node, expr); | |
413 | return expr; | |
414 | } | |
415 | ||
416 | ||
417 | ||
543a0daa RH |
418 | /* Create a declaration statement for the declaration given by the DECL. */ |
419 | ||
420 | void | |
350fae66 | 421 | add_decl_expr (tree decl) |
543a0daa | 422 | { |
c2255bc4 | 423 | tree r = build_stmt (input_location, DECL_EXPR, decl); |
b187901e AP |
424 | if (DECL_INITIAL (decl) |
425 | || (DECL_SIZE (decl) && TREE_SIDE_EFFECTS (DECL_SIZE (decl)))) | |
0ad28dde | 426 | r = maybe_cleanup_point_expr_void (r); |
543a0daa RH |
427 | add_stmt (r); |
428 | } | |
429 | ||
f2c5f623 | 430 | /* Finish a scope. */ |
35b1567d | 431 | |
20aff0b3 | 432 | tree |
325c3691 | 433 | do_poplevel (tree stmt_list) |
35b1567d | 434 | { |
325c3691 | 435 | tree block = NULL; |
35b1567d | 436 | |
f2c5f623 | 437 | if (stmts_are_full_exprs_p ()) |
325c3691 | 438 | block = poplevel (kept_level_p (), 1, 0); |
f2c5f623 | 439 | |
325c3691 | 440 | stmt_list = pop_stmt_list (stmt_list); |
c8094d83 | 441 | |
325c3691 RH |
442 | if (!processing_template_decl) |
443 | { | |
c2255bc4 | 444 | stmt_list = c_build_bind_expr (input_location, block, stmt_list); |
325c3691 | 445 | /* ??? See c_end_compound_stmt re statement expressions. */ |
35b1567d BC |
446 | } |
447 | ||
325c3691 | 448 | return stmt_list; |
35b1567d BC |
449 | } |
450 | ||
c8094d83 | 451 | /* Begin a new scope. */ |
35b1567d | 452 | |
325c3691 | 453 | static tree |
92bc1323 | 454 | do_pushlevel (scope_kind sk) |
35b1567d | 455 | { |
325c3691 | 456 | tree ret = push_stmt_list (); |
f2c5f623 | 457 | if (stmts_are_full_exprs_p ()) |
325c3691 RH |
458 | begin_scope (sk, NULL); |
459 | return ret; | |
460 | } | |
5a508662 RH |
461 | |
462 | /* Queue a cleanup. CLEANUP is an expression/statement to be executed | |
463 | when the current scope is exited. EH_ONLY is true when this is not | |
464 | meant to apply to normal control flow transfer. */ | |
465 | ||
466 | void | |
467 | push_cleanup (tree decl, tree cleanup, bool eh_only) | |
468 | { | |
c2255bc4 | 469 | tree stmt = build_stmt (input_location, CLEANUP_STMT, NULL, cleanup, decl); |
5a508662 RH |
470 | CLEANUP_EH_ONLY (stmt) = eh_only; |
471 | add_stmt (stmt); | |
472 | CLEANUP_BODY (stmt) = push_stmt_list (); | |
473 | } | |
325c3691 | 474 | |
caf2523d RH |
475 | /* Begin a conditional that might contain a declaration. When generating |
476 | normal code, we want the declaration to appear before the statement | |
477 | containing the conditional. When generating template code, we want the | |
350fae66 | 478 | conditional to be rendered as the raw DECL_EXPR. */ |
325c3691 RH |
479 | |
480 | static void | |
caf2523d | 481 | begin_cond (tree *cond_p) |
325c3691 | 482 | { |
caf2523d RH |
483 | if (processing_template_decl) |
484 | *cond_p = push_stmt_list (); | |
485 | } | |
486 | ||
487 | /* Finish such a conditional. */ | |
488 | ||
489 | static void | |
490 | finish_cond (tree *cond_p, tree expr) | |
491 | { | |
492 | if (processing_template_decl) | |
35b1567d | 493 | { |
caf2523d | 494 | tree cond = pop_stmt_list (*cond_p); |
350fae66 | 495 | if (TREE_CODE (cond) == DECL_EXPR) |
caf2523d | 496 | expr = cond; |
5d80a306 | 497 | |
7b3e2d46 | 498 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 499 | *cond_p = error_mark_node; |
35b1567d | 500 | } |
caf2523d | 501 | *cond_p = expr; |
35b1567d BC |
502 | } |
503 | ||
325c3691 RH |
504 | /* If *COND_P specifies a conditional with a declaration, transform the |
505 | loop such that | |
0cbd7506 MS |
506 | while (A x = 42) { } |
507 | for (; A x = 42;) { } | |
325c3691 | 508 | becomes |
0cbd7506 MS |
509 | while (true) { A x = 42; if (!x) break; } |
510 | for (;;) { A x = 42; if (!x) break; } | |
caf2523d RH |
511 | The statement list for BODY will be empty if the conditional did |
512 | not declare anything. */ | |
c8094d83 | 513 | |
325c3691 | 514 | static void |
caf2523d | 515 | simplify_loop_decl_cond (tree *cond_p, tree body) |
325c3691 | 516 | { |
caf2523d | 517 | tree cond, if_stmt; |
325c3691 | 518 | |
caf2523d RH |
519 | if (!TREE_SIDE_EFFECTS (body)) |
520 | return; | |
325c3691 | 521 | |
caf2523d RH |
522 | cond = *cond_p; |
523 | *cond_p = boolean_true_node; | |
c8094d83 | 524 | |
caf2523d | 525 | if_stmt = begin_if_stmt (); |
5ade1ed2 | 526 | cond = cp_build_unary_op (TRUTH_NOT_EXPR, cond, 0, tf_warning_or_error); |
caf2523d RH |
527 | finish_if_stmt_cond (cond, if_stmt); |
528 | finish_break_stmt (); | |
529 | finish_then_clause (if_stmt); | |
530 | finish_if_stmt (if_stmt); | |
531 | } | |
325c3691 | 532 | |
35b1567d BC |
533 | /* Finish a goto-statement. */ |
534 | ||
3e4d04a1 | 535 | tree |
3a978d72 | 536 | finish_goto_stmt (tree destination) |
35b1567d BC |
537 | { |
538 | if (TREE_CODE (destination) == IDENTIFIER_NODE) | |
539 | destination = lookup_label (destination); | |
540 | ||
541 | /* We warn about unused labels with -Wunused. That means we have to | |
542 | mark the used labels as used. */ | |
543 | if (TREE_CODE (destination) == LABEL_DECL) | |
544 | TREE_USED (destination) = 1; | |
fc2b8477 MM |
545 | else |
546 | { | |
547 | /* The DESTINATION is being used as an rvalue. */ | |
548 | if (!processing_template_decl) | |
f5651df1 JJ |
549 | { |
550 | destination = decay_conversion (destination); | |
551 | destination = cp_convert (ptr_type_node, destination); | |
552 | if (error_operand_p (destination)) | |
553 | return NULL_TREE; | |
554 | } | |
fc2b8477 MM |
555 | /* We don't inline calls to functions with computed gotos. |
556 | Those functions are typically up to some funny business, | |
557 | and may be depending on the labels being at particular | |
558 | addresses, or some such. */ | |
559 | DECL_UNINLINABLE (current_function_decl) = 1; | |
560 | } | |
c8094d83 | 561 | |
35b1567d BC |
562 | check_goto (destination); |
563 | ||
c2255bc4 | 564 | return add_stmt (build_stmt (input_location, GOTO_EXPR, destination)); |
35b1567d BC |
565 | } |
566 | ||
ed5511d9 | 567 | /* COND is the condition-expression for an if, while, etc., |
d4033c81 MLI |
568 | statement. Convert it to a boolean value, if appropriate. |
569 | In addition, verify sequence points if -Wsequence-point is enabled. */ | |
ed5511d9 | 570 | |
8ce33230 | 571 | static tree |
3a978d72 | 572 | maybe_convert_cond (tree cond) |
ed5511d9 MM |
573 | { |
574 | /* Empty conditions remain empty. */ | |
575 | if (!cond) | |
576 | return NULL_TREE; | |
577 | ||
578 | /* Wait until we instantiate templates before doing conversion. */ | |
579 | if (processing_template_decl) | |
580 | return cond; | |
581 | ||
d4033c81 MLI |
582 | if (warn_sequence_point) |
583 | verify_sequence_points (cond); | |
584 | ||
ed5511d9 MM |
585 | /* Do the conversion. */ |
586 | cond = convert_from_reference (cond); | |
fbc8d2d3 ILT |
587 | |
588 | if (TREE_CODE (cond) == MODIFY_EXPR | |
589 | && !TREE_NO_WARNING (cond) | |
590 | && warn_parentheses) | |
591 | { | |
592 | warning (OPT_Wparentheses, | |
593 | "suggest parentheses around assignment used as truth value"); | |
594 | TREE_NO_WARNING (cond) = 1; | |
595 | } | |
596 | ||
ed5511d9 MM |
597 | return condition_conversion (cond); |
598 | } | |
599 | ||
9bfadf57 | 600 | /* Finish an expression-statement, whose EXPRESSION is as indicated. */ |
a7e4cfa0 | 601 | |
3e4d04a1 | 602 | tree |
3a978d72 | 603 | finish_expr_stmt (tree expr) |
ad321293 | 604 | { |
3e4d04a1 RH |
605 | tree r = NULL_TREE; |
606 | ||
ce4a0391 | 607 | if (expr != NULL_TREE) |
ad321293 | 608 | { |
a5bcc582 | 609 | if (!processing_template_decl) |
3a5b9284 RH |
610 | { |
611 | if (warn_sequence_point) | |
612 | verify_sequence_points (expr); | |
5ade1ed2 | 613 | expr = convert_to_void (expr, "statement", tf_warning_or_error); |
3a5b9284 | 614 | } |
47d4c811 | 615 | else if (!type_dependent_expression_p (expr)) |
5ade1ed2 DG |
616 | convert_to_void (build_non_dependent_expr (expr), "statement", |
617 | tf_warning_or_error); | |
325c3691 | 618 | |
7b3e2d46 | 619 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 620 | expr = error_mark_node; |
5d80a306 | 621 | |
325c3691 | 622 | /* Simplification of inner statement expressions, compound exprs, |
ca5b80f3 | 623 | etc can result in us already having an EXPR_STMT. */ |
543a0daa RH |
624 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) |
625 | { | |
626 | if (TREE_CODE (expr) != EXPR_STMT) | |
c2255bc4 | 627 | expr = build_stmt (input_location, EXPR_STMT, expr); |
0ad28dde | 628 | expr = maybe_cleanup_point_expr_void (expr); |
543a0daa RH |
629 | } |
630 | ||
325c3691 | 631 | r = add_stmt (expr); |
35b1567d | 632 | } |
364460b6 | 633 | |
35b1567d | 634 | finish_stmt (); |
558475f0 | 635 | |
3e4d04a1 | 636 | return r; |
35b1567d BC |
637 | } |
638 | ||
35b1567d | 639 | |
ad321293 MM |
640 | /* Begin an if-statement. Returns a newly created IF_STMT if |
641 | appropriate. */ | |
642 | ||
643 | tree | |
3a978d72 | 644 | begin_if_stmt (void) |
ad321293 | 645 | { |
325c3691 RH |
646 | tree r, scope; |
647 | scope = do_pushlevel (sk_block); | |
c2255bc4 | 648 | r = build_stmt (input_location, IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 | 649 | TREE_CHAIN (r) = scope; |
caf2523d | 650 | begin_cond (&IF_COND (r)); |
ad321293 MM |
651 | return r; |
652 | } | |
653 | ||
654 | /* Process the COND of an if-statement, which may be given by | |
655 | IF_STMT. */ | |
656 | ||
c8094d83 | 657 | void |
3a978d72 | 658 | finish_if_stmt_cond (tree cond, tree if_stmt) |
ad321293 | 659 | { |
caf2523d RH |
660 | finish_cond (&IF_COND (if_stmt), maybe_convert_cond (cond)); |
661 | add_stmt (if_stmt); | |
325c3691 | 662 | THEN_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
663 | } |
664 | ||
665 | /* Finish the then-clause of an if-statement, which may be given by | |
666 | IF_STMT. */ | |
667 | ||
668 | tree | |
3a978d72 | 669 | finish_then_clause (tree if_stmt) |
ad321293 | 670 | { |
325c3691 | 671 | THEN_CLAUSE (if_stmt) = pop_stmt_list (THEN_CLAUSE (if_stmt)); |
35b1567d | 672 | return if_stmt; |
ad321293 MM |
673 | } |
674 | ||
675 | /* Begin the else-clause of an if-statement. */ | |
676 | ||
325c3691 RH |
677 | void |
678 | begin_else_clause (tree if_stmt) | |
ad321293 | 679 | { |
325c3691 | 680 | ELSE_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
681 | } |
682 | ||
683 | /* Finish the else-clause of an if-statement, which may be given by | |
684 | IF_STMT. */ | |
685 | ||
686 | void | |
3a978d72 | 687 | finish_else_clause (tree if_stmt) |
ad321293 | 688 | { |
325c3691 | 689 | ELSE_CLAUSE (if_stmt) = pop_stmt_list (ELSE_CLAUSE (if_stmt)); |
ad321293 MM |
690 | } |
691 | ||
dfbb4f34 | 692 | /* Finish an if-statement. */ |
ad321293 | 693 | |
c8094d83 | 694 | void |
325c3691 | 695 | finish_if_stmt (tree if_stmt) |
ad321293 | 696 | { |
325c3691 RH |
697 | tree scope = TREE_CHAIN (if_stmt); |
698 | TREE_CHAIN (if_stmt) = NULL; | |
699 | add_stmt (do_poplevel (scope)); | |
ad321293 | 700 | finish_stmt (); |
35b1567d BC |
701 | } |
702 | ||
ad321293 MM |
703 | /* Begin a while-statement. Returns a newly created WHILE_STMT if |
704 | appropriate. */ | |
705 | ||
706 | tree | |
3a978d72 | 707 | begin_while_stmt (void) |
ad321293 MM |
708 | { |
709 | tree r; | |
c2255bc4 | 710 | r = build_stmt (input_location, WHILE_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 711 | add_stmt (r); |
325c3691 | 712 | WHILE_BODY (r) = do_pushlevel (sk_block); |
caf2523d | 713 | begin_cond (&WHILE_COND (r)); |
ad321293 MM |
714 | return r; |
715 | } | |
716 | ||
27d26ee7 | 717 | /* Process the COND of a while-statement, which may be given by |
ad321293 MM |
718 | WHILE_STMT. */ |
719 | ||
c8094d83 | 720 | void |
3a978d72 | 721 | finish_while_stmt_cond (tree cond, tree while_stmt) |
ad321293 | 722 | { |
caf2523d RH |
723 | finish_cond (&WHILE_COND (while_stmt), maybe_convert_cond (cond)); |
724 | simplify_loop_decl_cond (&WHILE_COND (while_stmt), WHILE_BODY (while_stmt)); | |
ad321293 MM |
725 | } |
726 | ||
727 | /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
728 | ||
c8094d83 | 729 | void |
3a978d72 | 730 | finish_while_stmt (tree while_stmt) |
ad321293 | 731 | { |
325c3691 | 732 | WHILE_BODY (while_stmt) = do_poplevel (WHILE_BODY (while_stmt)); |
ad321293 MM |
733 | finish_stmt (); |
734 | } | |
735 | ||
736 | /* Begin a do-statement. Returns a newly created DO_STMT if | |
737 | appropriate. */ | |
738 | ||
739 | tree | |
3a978d72 | 740 | begin_do_stmt (void) |
ad321293 | 741 | { |
c2255bc4 | 742 | tree r = build_stmt (input_location, DO_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 743 | add_stmt (r); |
325c3691 | 744 | DO_BODY (r) = push_stmt_list (); |
35b1567d | 745 | return r; |
ad321293 MM |
746 | } |
747 | ||
748 | /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
749 | ||
750 | void | |
3a978d72 | 751 | finish_do_body (tree do_stmt) |
ad321293 | 752 | { |
62e00e94 DM |
753 | tree body = DO_BODY (do_stmt) = pop_stmt_list (DO_BODY (do_stmt)); |
754 | ||
755 | if (TREE_CODE (body) == STATEMENT_LIST && STATEMENT_LIST_TAIL (body)) | |
756 | body = STATEMENT_LIST_TAIL (body)->stmt; | |
757 | ||
758 | if (IS_EMPTY_STMT (body)) | |
759 | warning (OPT_Wempty_body, | |
760 | "suggest explicit braces around empty body in %<do%> statement"); | |
ad321293 MM |
761 | } |
762 | ||
763 | /* Finish a do-statement, which may be given by DO_STMT, and whose | |
764 | COND is as indicated. */ | |
765 | ||
766 | void | |
3a978d72 | 767 | finish_do_stmt (tree cond, tree do_stmt) |
ad321293 | 768 | { |
ed5511d9 | 769 | cond = maybe_convert_cond (cond); |
35b1567d BC |
770 | DO_COND (do_stmt) = cond; |
771 | finish_stmt (); | |
772 | } | |
ed5511d9 | 773 | |
ad321293 MM |
774 | /* Finish a return-statement. The EXPRESSION returned, if any, is as |
775 | indicated. */ | |
776 | ||
3e4d04a1 | 777 | tree |
3a978d72 | 778 | finish_return_stmt (tree expr) |
ad321293 | 779 | { |
3e4d04a1 | 780 | tree r; |
0c9b182b | 781 | bool no_warning; |
3e4d04a1 | 782 | |
0c9b182b | 783 | expr = check_return_expr (expr, &no_warning); |
1799e5d5 RH |
784 | |
785 | if (flag_openmp && !check_omp_return ()) | |
786 | return error_mark_node; | |
35b1567d | 787 | if (!processing_template_decl) |
efee38a9 | 788 | { |
d4033c81 MLI |
789 | if (warn_sequence_point) |
790 | verify_sequence_points (expr); | |
791 | ||
44d10c10 | 792 | if (DECL_DESTRUCTOR_P (current_function_decl) |
c8094d83 | 793 | || (DECL_CONSTRUCTOR_P (current_function_decl) |
44d10c10 | 794 | && targetm.cxx.cdtor_returns_this ())) |
efee38a9 MM |
795 | { |
796 | /* Similarly, all destructors must run destructors for | |
797 | base-classes before returning. So, all returns in a | |
dfbb4f34 | 798 | destructor get sent to the DTOR_LABEL; finish_function emits |
efee38a9 | 799 | code to return a value there. */ |
44d10c10 | 800 | return finish_goto_stmt (cdtor_label); |
efee38a9 MM |
801 | } |
802 | } | |
543a0daa | 803 | |
c2255bc4 | 804 | r = build_stmt (input_location, RETURN_EXPR, expr); |
0c9b182b | 805 | TREE_NO_WARNING (r) |= no_warning; |
0ad28dde | 806 | r = maybe_cleanup_point_expr_void (r); |
543a0daa | 807 | r = add_stmt (r); |
35b1567d | 808 | finish_stmt (); |
3e4d04a1 RH |
809 | |
810 | return r; | |
35b1567d | 811 | } |
efee38a9 | 812 | |
ad321293 MM |
813 | /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */ |
814 | ||
815 | tree | |
3a978d72 | 816 | begin_for_stmt (void) |
ad321293 MM |
817 | { |
818 | tree r; | |
819 | ||
c2255bc4 | 820 | r = build_stmt (input_location, FOR_STMT, NULL_TREE, NULL_TREE, |
0dfdeca6 | 821 | NULL_TREE, NULL_TREE); |
325c3691 RH |
822 | |
823 | if (flag_new_for_scope > 0) | |
824 | TREE_CHAIN (r) = do_pushlevel (sk_for); | |
ad321293 | 825 | |
894ca2c9 RH |
826 | if (processing_template_decl) |
827 | FOR_INIT_STMT (r) = push_stmt_list (); | |
828 | ||
ad321293 MM |
829 | return r; |
830 | } | |
831 | ||
832 | /* Finish the for-init-statement of a for-statement, which may be | |
833 | given by FOR_STMT. */ | |
834 | ||
835 | void | |
3a978d72 | 836 | finish_for_init_stmt (tree for_stmt) |
ad321293 | 837 | { |
894ca2c9 RH |
838 | if (processing_template_decl) |
839 | FOR_INIT_STMT (for_stmt) = pop_stmt_list (FOR_INIT_STMT (for_stmt)); | |
325c3691 RH |
840 | add_stmt (for_stmt); |
841 | FOR_BODY (for_stmt) = do_pushlevel (sk_block); | |
caf2523d | 842 | begin_cond (&FOR_COND (for_stmt)); |
ad321293 MM |
843 | } |
844 | ||
845 | /* Finish the COND of a for-statement, which may be given by | |
846 | FOR_STMT. */ | |
847 | ||
848 | void | |
3a978d72 | 849 | finish_for_cond (tree cond, tree for_stmt) |
ad321293 | 850 | { |
caf2523d RH |
851 | finish_cond (&FOR_COND (for_stmt), maybe_convert_cond (cond)); |
852 | simplify_loop_decl_cond (&FOR_COND (for_stmt), FOR_BODY (for_stmt)); | |
ad321293 MM |
853 | } |
854 | ||
855 | /* Finish the increment-EXPRESSION in a for-statement, which may be | |
856 | given by FOR_STMT. */ | |
857 | ||
858 | void | |
3a978d72 | 859 | finish_for_expr (tree expr, tree for_stmt) |
ad321293 | 860 | { |
543a0daa RH |
861 | if (!expr) |
862 | return; | |
6f69173e MM |
863 | /* If EXPR is an overloaded function, issue an error; there is no |
864 | context available to use to perform overload resolution. */ | |
543a0daa | 865 | if (type_unknown_p (expr)) |
6f69173e MM |
866 | { |
867 | cxx_incomplete_type_error (expr, TREE_TYPE (expr)); | |
868 | expr = error_mark_node; | |
869 | } | |
bcd46a7c AP |
870 | if (!processing_template_decl) |
871 | { | |
872 | if (warn_sequence_point) | |
0cbd7506 | 873 | verify_sequence_points (expr); |
5ade1ed2 DG |
874 | expr = convert_to_void (expr, "3rd expression in for", |
875 | tf_warning_or_error); | |
bcd46a7c AP |
876 | } |
877 | else if (!type_dependent_expression_p (expr)) | |
5ade1ed2 DG |
878 | convert_to_void (build_non_dependent_expr (expr), "3rd expression in for", |
879 | tf_warning_or_error); | |
0ad28dde | 880 | expr = maybe_cleanup_point_expr_void (expr); |
7b3e2d46 | 881 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 882 | expr = error_mark_node; |
35b1567d | 883 | FOR_EXPR (for_stmt) = expr; |
ad321293 MM |
884 | } |
885 | ||
886 | /* Finish the body of a for-statement, which may be given by | |
887 | FOR_STMT. The increment-EXPR for the loop must be | |
888 | provided. */ | |
889 | ||
890 | void | |
3a978d72 | 891 | finish_for_stmt (tree for_stmt) |
ad321293 | 892 | { |
325c3691 RH |
893 | FOR_BODY (for_stmt) = do_poplevel (FOR_BODY (for_stmt)); |
894 | ||
ad321293 | 895 | /* Pop the scope for the body of the loop. */ |
325c3691 RH |
896 | if (flag_new_for_scope > 0) |
897 | { | |
898 | tree scope = TREE_CHAIN (for_stmt); | |
899 | TREE_CHAIN (for_stmt) = NULL; | |
900 | add_stmt (do_poplevel (scope)); | |
901 | } | |
902 | ||
c8094d83 | 903 | finish_stmt (); |
ad321293 MM |
904 | } |
905 | ||
906 | /* Finish a break-statement. */ | |
907 | ||
3e4d04a1 | 908 | tree |
3a978d72 | 909 | finish_break_stmt (void) |
ad321293 | 910 | { |
c2255bc4 | 911 | return add_stmt (build_stmt (input_location, BREAK_STMT)); |
35b1567d BC |
912 | } |
913 | ||
ad321293 MM |
914 | /* Finish a continue-statement. */ |
915 | ||
3e4d04a1 | 916 | tree |
3a978d72 | 917 | finish_continue_stmt (void) |
ad321293 | 918 | { |
c2255bc4 | 919 | return add_stmt (build_stmt (input_location, CONTINUE_STMT)); |
ad321293 MM |
920 | } |
921 | ||
35b1567d BC |
922 | /* Begin a switch-statement. Returns a new SWITCH_STMT if |
923 | appropriate. */ | |
924 | ||
925 | tree | |
3a978d72 | 926 | begin_switch_stmt (void) |
35b1567d | 927 | { |
325c3691 RH |
928 | tree r, scope; |
929 | ||
c2255bc4 | 930 | r = build_stmt (input_location, SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 RH |
931 | |
932 | scope = do_pushlevel (sk_block); | |
933 | TREE_CHAIN (r) = scope; | |
ebaae582 | 934 | begin_cond (&SWITCH_STMT_COND (r)); |
325c3691 | 935 | |
527f0080 | 936 | return r; |
ad321293 MM |
937 | } |
938 | ||
527f0080 | 939 | /* Finish the cond of a switch-statement. */ |
ad321293 | 940 | |
527f0080 | 941 | void |
3a978d72 | 942 | finish_switch_cond (tree cond, tree switch_stmt) |
ad321293 | 943 | { |
6f9fdf4d | 944 | tree orig_type = NULL; |
35b1567d | 945 | if (!processing_template_decl) |
373eb3b3 | 946 | { |
35b1567d | 947 | /* Convert the condition to an integer or enumeration type. */ |
b746c5dc | 948 | cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); |
35b1567d | 949 | if (cond == NULL_TREE) |
373eb3b3 | 950 | { |
35b1567d BC |
951 | error ("switch quantity not an integer"); |
952 | cond = error_mark_node; | |
953 | } | |
6f9fdf4d | 954 | orig_type = TREE_TYPE (cond); |
35b1567d BC |
955 | if (cond != error_mark_node) |
956 | { | |
0a72704b MM |
957 | /* [stmt.switch] |
958 | ||
959 | Integral promotions are performed. */ | |
960 | cond = perform_integral_promotions (cond); | |
543a0daa | 961 | cond = maybe_cleanup_point_expr (cond); |
373eb3b3 | 962 | } |
ad321293 | 963 | } |
7b3e2d46 | 964 | if (check_for_bare_parameter_packs (cond)) |
4439d02f | 965 | cond = error_mark_node; |
d4033c81 MLI |
966 | else if (!processing_template_decl && warn_sequence_point) |
967 | verify_sequence_points (cond); | |
968 | ||
ebaae582 SB |
969 | finish_cond (&SWITCH_STMT_COND (switch_stmt), cond); |
970 | SWITCH_STMT_TYPE (switch_stmt) = orig_type; | |
caf2523d | 971 | add_stmt (switch_stmt); |
56cb9733 | 972 | push_switch (switch_stmt); |
ebaae582 | 973 | SWITCH_STMT_BODY (switch_stmt) = push_stmt_list (); |
ad321293 MM |
974 | } |
975 | ||
976 | /* Finish the body of a switch-statement, which may be given by | |
977 | SWITCH_STMT. The COND to switch on is indicated. */ | |
978 | ||
979 | void | |
3a978d72 | 980 | finish_switch_stmt (tree switch_stmt) |
ad321293 | 981 | { |
325c3691 RH |
982 | tree scope; |
983 | ||
ebaae582 SB |
984 | SWITCH_STMT_BODY (switch_stmt) = |
985 | pop_stmt_list (SWITCH_STMT_BODY (switch_stmt)); | |
c8094d83 | 986 | pop_switch (); |
ad321293 | 987 | finish_stmt (); |
325c3691 RH |
988 | |
989 | scope = TREE_CHAIN (switch_stmt); | |
990 | TREE_CHAIN (switch_stmt) = NULL; | |
991 | add_stmt (do_poplevel (scope)); | |
ad321293 MM |
992 | } |
993 | ||
ad321293 MM |
994 | /* Begin a try-block. Returns a newly-created TRY_BLOCK if |
995 | appropriate. */ | |
996 | ||
997 | tree | |
3a978d72 | 998 | begin_try_block (void) |
ad321293 | 999 | { |
c2255bc4 | 1000 | tree r = build_stmt (input_location, TRY_BLOCK, NULL_TREE, NULL_TREE); |
ae499cce | 1001 | add_stmt (r); |
325c3691 | 1002 | TRY_STMTS (r) = push_stmt_list (); |
35b1567d | 1003 | return r; |
ad321293 MM |
1004 | } |
1005 | ||
eaf6fb90 MM |
1006 | /* Likewise, for a function-try-block. The block returned in |
1007 | *COMPOUND_STMT is an artificial outer scope, containing the | |
1008 | function-try-block. */ | |
0dde4175 JM |
1009 | |
1010 | tree | |
eaf6fb90 | 1011 | begin_function_try_block (tree *compound_stmt) |
0dde4175 | 1012 | { |
eaf6fb90 MM |
1013 | tree r; |
1014 | /* This outer scope does not exist in the C++ standard, but we need | |
1015 | a place to put __FUNCTION__ and similar variables. */ | |
1016 | *compound_stmt = begin_compound_stmt (0); | |
1017 | r = begin_try_block (); | |
35b1567d | 1018 | FN_TRY_BLOCK_P (r) = 1; |
35b1567d | 1019 | return r; |
0dde4175 JM |
1020 | } |
1021 | ||
ad321293 MM |
1022 | /* Finish a try-block, which may be given by TRY_BLOCK. */ |
1023 | ||
1024 | void | |
3a978d72 | 1025 | finish_try_block (tree try_block) |
ad321293 | 1026 | { |
325c3691 RH |
1027 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
1028 | TRY_HANDLERS (try_block) = push_stmt_list (); | |
ad321293 MM |
1029 | } |
1030 | ||
efa8eda3 MM |
1031 | /* Finish the body of a cleanup try-block, which may be given by |
1032 | TRY_BLOCK. */ | |
1033 | ||
62409b39 | 1034 | void |
3a978d72 | 1035 | finish_cleanup_try_block (tree try_block) |
62409b39 | 1036 | { |
325c3691 | 1037 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
62409b39 MM |
1038 | } |
1039 | ||
f1dedc31 MM |
1040 | /* Finish an implicitly generated try-block, with a cleanup is given |
1041 | by CLEANUP. */ | |
1042 | ||
1043 | void | |
3a978d72 | 1044 | finish_cleanup (tree cleanup, tree try_block) |
f1dedc31 | 1045 | { |
35b1567d BC |
1046 | TRY_HANDLERS (try_block) = cleanup; |
1047 | CLEANUP_P (try_block) = 1; | |
f1dedc31 MM |
1048 | } |
1049 | ||
0dde4175 JM |
1050 | /* Likewise, for a function-try-block. */ |
1051 | ||
1052 | void | |
3a978d72 | 1053 | finish_function_try_block (tree try_block) |
0dde4175 | 1054 | { |
325c3691 RH |
1055 | finish_try_block (try_block); |
1056 | /* FIXME : something queer about CTOR_INITIALIZER somehow following | |
1057 | the try block, but moving it inside. */ | |
b35d4555 | 1058 | in_function_try_handler = 1; |
0dde4175 JM |
1059 | } |
1060 | ||
ad321293 MM |
1061 | /* Finish a handler-sequence for a try-block, which may be given by |
1062 | TRY_BLOCK. */ | |
1063 | ||
1064 | void | |
3a978d72 | 1065 | finish_handler_sequence (tree try_block) |
ad321293 | 1066 | { |
325c3691 | 1067 | TRY_HANDLERS (try_block) = pop_stmt_list (TRY_HANDLERS (try_block)); |
35b1567d | 1068 | check_handlers (TRY_HANDLERS (try_block)); |
ad321293 MM |
1069 | } |
1070 | ||
eaf6fb90 MM |
1071 | /* Finish the handler-seq for a function-try-block, given by |
1072 | TRY_BLOCK. COMPOUND_STMT is the outer block created by | |
1073 | begin_function_try_block. */ | |
0dde4175 JM |
1074 | |
1075 | void | |
eaf6fb90 | 1076 | finish_function_handler_sequence (tree try_block, tree compound_stmt) |
0dde4175 | 1077 | { |
b35d4555 | 1078 | in_function_try_handler = 0; |
325c3691 | 1079 | finish_handler_sequence (try_block); |
eaf6fb90 | 1080 | finish_compound_stmt (compound_stmt); |
35b1567d BC |
1081 | } |
1082 | ||
ad321293 MM |
1083 | /* Begin a handler. Returns a HANDLER if appropriate. */ |
1084 | ||
1085 | tree | |
3a978d72 | 1086 | begin_handler (void) |
ad321293 MM |
1087 | { |
1088 | tree r; | |
325c3691 | 1089 | |
c2255bc4 | 1090 | r = build_stmt (input_location, HANDLER, NULL_TREE, NULL_TREE); |
ae499cce | 1091 | add_stmt (r); |
325c3691 | 1092 | |
1a6025b4 JM |
1093 | /* Create a binding level for the eh_info and the exception object |
1094 | cleanup. */ | |
325c3691 RH |
1095 | HANDLER_BODY (r) = do_pushlevel (sk_catch); |
1096 | ||
ad321293 MM |
1097 | return r; |
1098 | } | |
1099 | ||
1100 | /* Finish the handler-parameters for a handler, which may be given by | |
b35d4555 MM |
1101 | HANDLER. DECL is the declaration for the catch parameter, or NULL |
1102 | if this is a `catch (...)' clause. */ | |
ad321293 | 1103 | |
1a6025b4 | 1104 | void |
3a978d72 | 1105 | finish_handler_parms (tree decl, tree handler) |
b35d4555 | 1106 | { |
1a6025b4 | 1107 | tree type = NULL_TREE; |
b35d4555 MM |
1108 | if (processing_template_decl) |
1109 | { | |
1110 | if (decl) | |
1111 | { | |
1112 | decl = pushdecl (decl); | |
1113 | decl = push_template_decl (decl); | |
325c3691 | 1114 | HANDLER_PARMS (handler) = decl; |
1a6025b4 | 1115 | type = TREE_TYPE (decl); |
b35d4555 MM |
1116 | } |
1117 | } | |
35b1567d | 1118 | else |
1a6025b4 | 1119 | type = expand_start_catch_block (decl); |
1a6025b4 | 1120 | HANDLER_TYPE (handler) = type; |
b80cfdcd | 1121 | if (!processing_template_decl && type) |
6cad4e17 | 1122 | mark_used (eh_type_info (type)); |
35b1567d BC |
1123 | } |
1124 | ||
1125 | /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
1126 | the return value from the matching call to finish_handler_parms. */ | |
1127 | ||
1128 | void | |
3a978d72 | 1129 | finish_handler (tree handler) |
35b1567d BC |
1130 | { |
1131 | if (!processing_template_decl) | |
1a6025b4 | 1132 | expand_end_catch_block (); |
325c3691 | 1133 | HANDLER_BODY (handler) = do_poplevel (HANDLER_BODY (handler)); |
35b1567d BC |
1134 | } |
1135 | ||
5882f0f3 | 1136 | /* Begin a compound statement. FLAGS contains some bits that control the |
5995ebfb | 1137 | behavior and context. If BCS_NO_SCOPE is set, the compound statement |
5882f0f3 | 1138 | does not define a scope. If BCS_FN_BODY is set, this is the outermost |
c8094d83 | 1139 | block of a function. If BCS_TRY_BLOCK is set, this is the block |
5882f0f3 RH |
1140 | created on behalf of a TRY statement. Returns a token to be passed to |
1141 | finish_compound_stmt. */ | |
ad321293 MM |
1142 | |
1143 | tree | |
325c3691 | 1144 | begin_compound_stmt (unsigned int flags) |
ad321293 | 1145 | { |
325c3691 | 1146 | tree r; |
558475f0 | 1147 | |
325c3691 RH |
1148 | if (flags & BCS_NO_SCOPE) |
1149 | { | |
1150 | r = push_stmt_list (); | |
1151 | STATEMENT_LIST_NO_SCOPE (r) = 1; | |
1152 | ||
1153 | /* Normally, we try hard to keep the BLOCK for a statement-expression. | |
1154 | But, if it's a statement-expression with a scopeless block, there's | |
1155 | nothing to keep, and we don't want to accidentally keep a block | |
c8094d83 | 1156 | *inside* the scopeless block. */ |
325c3691 RH |
1157 | keep_next_level (false); |
1158 | } | |
f1dedc31 | 1159 | else |
325c3691 RH |
1160 | r = do_pushlevel (flags & BCS_TRY_BLOCK ? sk_try : sk_block); |
1161 | ||
5882f0f3 RH |
1162 | /* When processing a template, we need to remember where the braces were, |
1163 | so that we can set up identical scopes when instantiating the template | |
1164 | later. BIND_EXPR is a handy candidate for this. | |
1165 | Note that do_poplevel won't create a BIND_EXPR itself here (and thus | |
1166 | result in nested BIND_EXPRs), since we don't build BLOCK nodes when | |
1167 | processing templates. */ | |
1168 | if (processing_template_decl) | |
325c3691 | 1169 | { |
f293ce4b | 1170 | r = build3 (BIND_EXPR, NULL, NULL, r, NULL); |
5882f0f3 RH |
1171 | BIND_EXPR_TRY_BLOCK (r) = (flags & BCS_TRY_BLOCK) != 0; |
1172 | BIND_EXPR_BODY_BLOCK (r) = (flags & BCS_FN_BODY) != 0; | |
325c3691 RH |
1173 | TREE_SIDE_EFFECTS (r) = 1; |
1174 | } | |
ad321293 MM |
1175 | |
1176 | return r; | |
1177 | } | |
1178 | ||
5882f0f3 | 1179 | /* Finish a compound-statement, which is given by STMT. */ |
ad321293 | 1180 | |
325c3691 RH |
1181 | void |
1182 | finish_compound_stmt (tree stmt) | |
ad321293 | 1183 | { |
5882f0f3 RH |
1184 | if (TREE_CODE (stmt) == BIND_EXPR) |
1185 | BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt)); | |
325c3691 RH |
1186 | else if (STATEMENT_LIST_NO_SCOPE (stmt)) |
1187 | stmt = pop_stmt_list (stmt); | |
7a3397c7 | 1188 | else |
5f070bc7 ZL |
1189 | { |
1190 | /* Destroy any ObjC "super" receivers that may have been | |
1191 | created. */ | |
1192 | objc_clear_super_receiver (); | |
1193 | ||
1194 | stmt = do_poplevel (stmt); | |
1195 | } | |
ad321293 | 1196 | |
325c3691 RH |
1197 | /* ??? See c_end_compound_stmt wrt statement expressions. */ |
1198 | add_stmt (stmt); | |
ad321293 | 1199 | finish_stmt (); |
ad321293 MM |
1200 | } |
1201 | ||
6de9cd9a | 1202 | /* Finish an asm-statement, whose components are a STRING, some |
1c384bf1 RH |
1203 | OUTPUT_OPERANDS, some INPUT_OPERANDS, some CLOBBERS and some |
1204 | LABELS. Also note whether the asm-statement should be | |
1205 | considered volatile. */ | |
7dc5bd62 | 1206 | |
3e4d04a1 | 1207 | tree |
6de9cd9a | 1208 | finish_asm_stmt (int volatile_p, tree string, tree output_operands, |
1c384bf1 | 1209 | tree input_operands, tree clobbers, tree labels) |
35b1567d BC |
1210 | { |
1211 | tree r; | |
abfc8a36 | 1212 | tree t; |
5544530a PB |
1213 | int ninputs = list_length (input_operands); |
1214 | int noutputs = list_length (output_operands); | |
abfc8a36 | 1215 | |
abfc8a36 | 1216 | if (!processing_template_decl) |
40b18c0a | 1217 | { |
74f0c611 RH |
1218 | const char *constraint; |
1219 | const char **oconstraints; | |
1220 | bool allows_mem, allows_reg, is_inout; | |
1221 | tree operand; | |
40b18c0a | 1222 | int i; |
40b18c0a | 1223 | |
74f0c611 RH |
1224 | oconstraints = (const char **) alloca (noutputs * sizeof (char *)); |
1225 | ||
1226 | string = resolve_asm_operand_names (string, output_operands, | |
1c384bf1 | 1227 | input_operands, labels); |
74f0c611 RH |
1228 | |
1229 | for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
40b18c0a | 1230 | { |
74f0c611 RH |
1231 | operand = TREE_VALUE (t); |
1232 | ||
1233 | /* ??? Really, this should not be here. Users should be using a | |
1234 | proper lvalue, dammit. But there's a long history of using | |
1235 | casts in the output operands. In cases like longlong.h, this | |
1236 | becomes a primitive form of typechecking -- if the cast can be | |
1237 | removed, then the output operand had a type of the proper width; | |
1238 | otherwise we'll get an error. Gross, but ... */ | |
1239 | STRIP_NOPS (operand); | |
1240 | ||
5ade1ed2 | 1241 | if (!lvalue_or_else (operand, lv_asm, tf_warning_or_error)) |
74f0c611 RH |
1242 | operand = error_mark_node; |
1243 | ||
3db45ab5 | 1244 | if (operand != error_mark_node |
5544530a PB |
1245 | && (TREE_READONLY (operand) |
1246 | || CP_TYPE_CONST_P (TREE_TYPE (operand)) | |
3db45ab5 MS |
1247 | /* Functions are not modifiable, even though they are |
1248 | lvalues. */ | |
1249 | || TREE_CODE (TREE_TYPE (operand)) == FUNCTION_TYPE | |
1250 | || TREE_CODE (TREE_TYPE (operand)) == METHOD_TYPE | |
1251 | /* If it's an aggregate and any field is const, then it is | |
1252 | effectively const. */ | |
1253 | || (CLASS_TYPE_P (TREE_TYPE (operand)) | |
1254 | && C_TYPE_FIELDS_READONLY (TREE_TYPE (operand))))) | |
fabb00fc | 1255 | readonly_error (operand, "assignment (via 'asm' output)"); |
5544530a | 1256 | |
74f0c611 RH |
1257 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); |
1258 | oconstraints[i] = constraint; | |
1259 | ||
1260 | if (parse_output_constraint (&constraint, i, ninputs, noutputs, | |
1261 | &allows_mem, &allows_reg, &is_inout)) | |
1262 | { | |
1263 | /* If the operand is going to end up in memory, | |
1264 | mark it addressable. */ | |
1265 | if (!allows_reg && !cxx_mark_addressable (operand)) | |
1266 | operand = error_mark_node; | |
1267 | } | |
1268 | else | |
1269 | operand = error_mark_node; | |
1270 | ||
1271 | TREE_VALUE (t) = operand; | |
1272 | } | |
1273 | ||
1274 | for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t)) | |
1275 | { | |
1276 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
c8094d83 | 1277 | operand = decay_conversion (TREE_VALUE (t)); |
74f0c611 | 1278 | |
40b18c0a MM |
1279 | /* If the type of the operand hasn't been determined (e.g., |
1280 | because it involves an overloaded function), then issue | |
1281 | an error message. There's no context available to | |
1282 | resolve the overloading. */ | |
74f0c611 | 1283 | if (TREE_TYPE (operand) == unknown_type_node) |
40b18c0a | 1284 | { |
c8094d83 | 1285 | error ("type of asm operand %qE could not be determined", |
0cbd7506 | 1286 | TREE_VALUE (t)); |
74f0c611 | 1287 | operand = error_mark_node; |
40b18c0a | 1288 | } |
40b18c0a | 1289 | |
74f0c611 RH |
1290 | if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0, |
1291 | oconstraints, &allows_mem, &allows_reg)) | |
40b18c0a | 1292 | { |
74f0c611 RH |
1293 | /* If the operand is going to end up in memory, |
1294 | mark it addressable. */ | |
b4c33883 AP |
1295 | if (!allows_reg && allows_mem) |
1296 | { | |
1297 | /* Strip the nops as we allow this case. FIXME, this really | |
1298 | should be rejected or made deprecated. */ | |
1299 | STRIP_NOPS (operand); | |
1300 | if (!cxx_mark_addressable (operand)) | |
1301 | operand = error_mark_node; | |
1302 | } | |
40b18c0a | 1303 | } |
74f0c611 RH |
1304 | else |
1305 | operand = error_mark_node; | |
40b18c0a | 1306 | |
74f0c611 | 1307 | TREE_VALUE (t) = operand; |
40b18c0a MM |
1308 | } |
1309 | } | |
abfc8a36 | 1310 | |
c2255bc4 | 1311 | r = build_stmt (input_location, ASM_EXPR, string, |
0dfdeca6 | 1312 | output_operands, input_operands, |
1c384bf1 | 1313 | clobbers, labels); |
5544530a | 1314 | ASM_VOLATILE_P (r) = volatile_p || noutputs == 0; |
0ad28dde | 1315 | r = maybe_cleanup_point_expr_void (r); |
3e4d04a1 | 1316 | return add_stmt (r); |
ad321293 | 1317 | } |
b4c4a9ec | 1318 | |
5bca4e80 | 1319 | /* Finish a label with the indicated NAME. Returns the new label. */ |
f01b0acb | 1320 | |
a723baf1 | 1321 | tree |
3a978d72 | 1322 | finish_label_stmt (tree name) |
f01b0acb | 1323 | { |
5b030314 | 1324 | tree decl = define_label (input_location, name); |
417fa55b | 1325 | |
5bca4e80 | 1326 | if (decl == error_mark_node) |
417fa55b LM |
1327 | return error_mark_node; |
1328 | ||
c2255bc4 | 1329 | add_stmt (build_stmt (input_location, LABEL_EXPR, decl)); |
5bca4e80 ILT |
1330 | |
1331 | return decl; | |
f01b0acb MM |
1332 | } |
1333 | ||
acef433b MM |
1334 | /* Finish a series of declarations for local labels. G++ allows users |
1335 | to declare "local" labels, i.e., labels with scope. This extension | |
1336 | is useful when writing code involving statement-expressions. */ | |
1337 | ||
1338 | void | |
3a978d72 | 1339 | finish_label_decl (tree name) |
acef433b | 1340 | { |
a6d76a95 PC |
1341 | if (!at_function_scope_p ()) |
1342 | { | |
1343 | error ("__label__ declarations are only allowed in function scopes"); | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | add_decl_expr (declare_local_label (name)); | |
acef433b MM |
1348 | } |
1349 | ||
659e5a7a | 1350 | /* When DECL goes out of scope, make sure that CLEANUP is executed. */ |
f1dedc31 | 1351 | |
c8094d83 | 1352 | void |
3a978d72 | 1353 | finish_decl_cleanup (tree decl, tree cleanup) |
f1dedc31 | 1354 | { |
325c3691 | 1355 | push_cleanup (decl, cleanup, false); |
35b1567d BC |
1356 | } |
1357 | ||
659e5a7a | 1358 | /* If the current scope exits with an exception, run CLEANUP. */ |
24bef158 | 1359 | |
659e5a7a | 1360 | void |
3a978d72 | 1361 | finish_eh_cleanup (tree cleanup) |
24bef158 | 1362 | { |
325c3691 | 1363 | push_cleanup (NULL, cleanup, true); |
35b1567d BC |
1364 | } |
1365 | ||
2282d28d MM |
1366 | /* The MEM_INITS is a list of mem-initializers, in reverse of the |
1367 | order they were written by the user. Each node is as for | |
1368 | emit_mem_initializers. */ | |
bf3428d0 MM |
1369 | |
1370 | void | |
2282d28d | 1371 | finish_mem_initializers (tree mem_inits) |
bf3428d0 | 1372 | { |
2282d28d MM |
1373 | /* Reorder the MEM_INITS so that they are in the order they appeared |
1374 | in the source program. */ | |
1375 | mem_inits = nreverse (mem_inits); | |
bf3428d0 | 1376 | |
a0de9d20 | 1377 | if (processing_template_decl) |
5d80a306 DG |
1378 | { |
1379 | tree mem; | |
1380 | ||
1381 | for (mem = mem_inits; mem; mem = TREE_CHAIN (mem)) | |
1382 | { | |
1383 | /* If the TREE_PURPOSE is a TYPE_PACK_EXPANSION, skip the | |
1384 | check for bare parameter packs in the TREE_VALUE, because | |
1385 | any parameter packs in the TREE_VALUE have already been | |
1386 | bound as part of the TREE_PURPOSE. See | |
1387 | make_pack_expansion for more information. */ | |
4439d02f | 1388 | if (TREE_CODE (TREE_PURPOSE (mem)) != TYPE_PACK_EXPANSION |
7b3e2d46 | 1389 | && check_for_bare_parameter_packs (TREE_VALUE (mem))) |
4439d02f | 1390 | TREE_VALUE (mem) = error_mark_node; |
5d80a306 DG |
1391 | } |
1392 | ||
1393 | add_stmt (build_min_nt (CTOR_INITIALIZER, mem_inits)); | |
1394 | } | |
cdd2559c | 1395 | else |
2282d28d | 1396 | emit_mem_initializers (mem_inits); |
558475f0 MM |
1397 | } |
1398 | ||
b4c4a9ec MM |
1399 | /* Finish a parenthesized expression EXPR. */ |
1400 | ||
1401 | tree | |
3a978d72 | 1402 | finish_parenthesized_expr (tree expr) |
b4c4a9ec | 1403 | { |
6615c446 | 1404 | if (EXPR_P (expr)) |
78ef5b89 | 1405 | /* This inhibits warnings in c_common_truthvalue_conversion. */ |
31ec7d2f | 1406 | TREE_NO_WARNING (expr) = 1; |
b4c4a9ec | 1407 | |
19420d00 NS |
1408 | if (TREE_CODE (expr) == OFFSET_REF) |
1409 | /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1410 | enclosed in parentheses. */ | |
1411 | PTRMEM_OK_P (expr) = 0; | |
c8094d83 | 1412 | |
7a8380ae NS |
1413 | if (TREE_CODE (expr) == STRING_CST) |
1414 | PAREN_STRING_LITERAL_P (expr) = 1; | |
c8094d83 | 1415 | |
b4c4a9ec MM |
1416 | return expr; |
1417 | } | |
1418 | ||
a723baf1 MM |
1419 | /* Finish a reference to a non-static data member (DECL) that is not |
1420 | preceded by `.' or `->'. */ | |
1421 | ||
1422 | tree | |
a3f10e50 | 1423 | finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) |
a723baf1 | 1424 | { |
50bc768d | 1425 | gcc_assert (TREE_CODE (decl) == FIELD_DECL); |
a723baf1 | 1426 | |
7d882b83 | 1427 | if (!object && cp_unevaluated_operand != 0) |
51fc2d02 JM |
1428 | { |
1429 | /* DR 613: Can use non-static data members without an associated | |
1430 | object in sizeof/decltype/alignof. */ | |
1431 | tree scope = qualifying_scope; | |
1432 | if (scope == NULL_TREE) | |
1433 | scope = context_for_name_lookup (decl); | |
1434 | object = maybe_dummy_object (scope, NULL); | |
1435 | } | |
1436 | ||
a3f10e50 | 1437 | if (!object) |
a723baf1 | 1438 | { |
c8094d83 | 1439 | if (current_function_decl |
a723baf1 | 1440 | && DECL_STATIC_FUNCTION_P (current_function_decl)) |
dee15844 | 1441 | error ("invalid use of member %q+D in static member function", decl); |
a723baf1 | 1442 | else |
dee15844 | 1443 | error ("invalid use of non-static data member %q+D", decl); |
a723baf1 MM |
1444 | error ("from this location"); |
1445 | ||
1446 | return error_mark_node; | |
1447 | } | |
51fc2d02 JM |
1448 | if (current_class_ptr) |
1449 | TREE_USED (current_class_ptr) = 1; | |
58e1d54c | 1450 | if (processing_template_decl && !qualifying_scope) |
a723baf1 | 1451 | { |
a3f10e50 | 1452 | tree type = TREE_TYPE (decl); |
a723baf1 | 1453 | |
a3f10e50 NS |
1454 | if (TREE_CODE (type) == REFERENCE_TYPE) |
1455 | type = TREE_TYPE (type); | |
1456 | else | |
1457 | { | |
f4f206f4 | 1458 | /* Set the cv qualifiers. */ |
51fc2d02 JM |
1459 | int quals = (current_class_ref |
1460 | ? cp_type_quals (TREE_TYPE (current_class_ref)) | |
1461 | : TYPE_UNQUALIFIED); | |
c8094d83 | 1462 | |
a3f10e50 NS |
1463 | if (DECL_MUTABLE_P (decl)) |
1464 | quals &= ~TYPE_QUAL_CONST; | |
9e95d15f | 1465 | |
a3f10e50 NS |
1466 | quals |= cp_type_quals (TREE_TYPE (decl)); |
1467 | type = cp_build_qualified_type (type, quals); | |
1468 | } | |
c8094d83 | 1469 | |
44de5aeb | 1470 | return build_min (COMPONENT_REF, type, object, decl, NULL_TREE); |
a3f10e50 NS |
1471 | } |
1472 | else | |
1473 | { | |
1474 | tree access_type = TREE_TYPE (object); | |
1475 | tree lookup_context = context_for_name_lookup (decl); | |
c8094d83 | 1476 | |
a3f10e50 | 1477 | while (!DERIVED_FROM_P (lookup_context, access_type)) |
a723baf1 MM |
1478 | { |
1479 | access_type = TYPE_CONTEXT (access_type); | |
9f01ded6 | 1480 | while (access_type && DECL_P (access_type)) |
a723baf1 | 1481 | access_type = DECL_CONTEXT (access_type); |
a723baf1 | 1482 | |
a3f10e50 NS |
1483 | if (!access_type) |
1484 | { | |
dee15844 | 1485 | error ("object missing in reference to %q+D", decl); |
a3f10e50 NS |
1486 | error ("from this location"); |
1487 | return error_mark_node; | |
1488 | } | |
9f01ded6 KL |
1489 | } |
1490 | ||
5c425df5 | 1491 | /* If PROCESSING_TEMPLATE_DECL is nonzero here, then |
58e1d54c KL |
1492 | QUALIFYING_SCOPE is also non-null. Wrap this in a SCOPE_REF |
1493 | for now. */ | |
1494 | if (processing_template_decl) | |
02ed62dd MM |
1495 | return build_qualified_name (TREE_TYPE (decl), |
1496 | qualifying_scope, | |
1497 | DECL_NAME (decl), | |
1498 | /*template_p=*/false); | |
58e1d54c | 1499 | |
02022f3a SM |
1500 | perform_or_defer_access_check (TYPE_BINFO (access_type), decl, |
1501 | decl); | |
a723baf1 MM |
1502 | |
1503 | /* If the data member was named `C::M', convert `*this' to `C' | |
1504 | first. */ | |
1505 | if (qualifying_scope) | |
1506 | { | |
1507 | tree binfo = NULL_TREE; | |
1508 | object = build_scoped_ref (object, qualifying_scope, | |
1509 | &binfo); | |
1510 | } | |
1511 | ||
1512 | return build_class_member_access_expr (object, decl, | |
1513 | /*access_path=*/NULL_TREE, | |
5ade1ed2 DG |
1514 | /*preserve_reference=*/false, |
1515 | tf_warning_or_error); | |
a723baf1 MM |
1516 | } |
1517 | } | |
1518 | ||
ee76b931 MM |
1519 | /* DECL was the declaration to which a qualified-id resolved. Issue |
1520 | an error message if it is not accessible. If OBJECT_TYPE is | |
1521 | non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1522 | type of `*x', or `x', respectively. If the DECL was named as | |
1523 | `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1524 | ||
1525 | void | |
c8094d83 MS |
1526 | check_accessibility_of_qualified_id (tree decl, |
1527 | tree object_type, | |
ee76b931 MM |
1528 | tree nested_name_specifier) |
1529 | { | |
1530 | tree scope; | |
1531 | tree qualifying_type = NULL_TREE; | |
95b4aca6 | 1532 | |
d0940d56 DS |
1533 | /* If we are parsing a template declaration and if decl is a typedef, |
1534 | add it to a list tied to the template. | |
1535 | At template instantiation time, that list will be walked and | |
1536 | access check performed. */ | |
1537 | if (is_typedef_decl (decl)) | |
1538 | { | |
1539 | /* This the scope through which type_decl is accessed. | |
1540 | It will be useful information later to do access check for | |
1541 | type_decl usage. */ | |
1542 | tree scope = nested_name_specifier | |
1543 | ? nested_name_specifier | |
1544 | : DECL_CONTEXT (decl); | |
1545 | tree templ_info = NULL; | |
1546 | tree cs = current_scope (); | |
1547 | ||
1548 | if (cs && (CLASS_TYPE_P (cs) || TREE_CODE (cs) == FUNCTION_DECL)) | |
1549 | templ_info = get_template_info (cs); | |
1550 | ||
1551 | if (templ_info | |
1552 | && TI_TEMPLATE (templ_info) | |
1553 | && scope | |
1554 | && CLASS_TYPE_P (scope) | |
1555 | && !currently_open_class (scope)) | |
1556 | append_type_to_template_for_access_check (current_scope (), decl, scope); | |
1557 | } | |
1558 | ||
77880ae4 | 1559 | /* If we're not checking, return immediately. */ |
95b4aca6 NS |
1560 | if (deferred_access_no_check) |
1561 | return; | |
c8094d83 | 1562 | |
ee76b931 MM |
1563 | /* Determine the SCOPE of DECL. */ |
1564 | scope = context_for_name_lookup (decl); | |
1565 | /* If the SCOPE is not a type, then DECL is not a member. */ | |
1566 | if (!TYPE_P (scope)) | |
1567 | return; | |
1568 | /* Compute the scope through which DECL is being accessed. */ | |
c8094d83 | 1569 | if (object_type |
ee76b931 MM |
1570 | /* OBJECT_TYPE might not be a class type; consider: |
1571 | ||
1572 | class A { typedef int I; }; | |
1573 | I *p; | |
1574 | p->A::I::~I(); | |
1575 | ||
0cbd7506 | 1576 | In this case, we will have "A::I" as the DECL, but "I" as the |
ee76b931 MM |
1577 | OBJECT_TYPE. */ |
1578 | && CLASS_TYPE_P (object_type) | |
1579 | && DERIVED_FROM_P (scope, object_type)) | |
1580 | /* If we are processing a `->' or `.' expression, use the type of the | |
1581 | left-hand side. */ | |
1582 | qualifying_type = object_type; | |
1583 | else if (nested_name_specifier) | |
1584 | { | |
1585 | /* If the reference is to a non-static member of the | |
1586 | current class, treat it as if it were referenced through | |
1587 | `this'. */ | |
1588 | if (DECL_NONSTATIC_MEMBER_P (decl) | |
1589 | && current_class_ptr | |
1590 | && DERIVED_FROM_P (scope, current_class_type)) | |
1591 | qualifying_type = current_class_type; | |
1592 | /* Otherwise, use the type indicated by the | |
1593 | nested-name-specifier. */ | |
1594 | else | |
1595 | qualifying_type = nested_name_specifier; | |
1596 | } | |
1597 | else | |
1598 | /* Otherwise, the name must be from the current class or one of | |
1599 | its bases. */ | |
1600 | qualifying_type = currently_open_derived_class (scope); | |
1601 | ||
fc429748 MM |
1602 | if (qualifying_type |
1603 | /* It is possible for qualifying type to be a TEMPLATE_TYPE_PARM | |
1604 | or similar in a default argument value. */ | |
1605 | && CLASS_TYPE_P (qualifying_type) | |
1606 | && !dependent_type_p (qualifying_type)) | |
02022f3a SM |
1607 | perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl, |
1608 | decl); | |
ee76b931 MM |
1609 | } |
1610 | ||
1611 | /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1612 | class named to the left of the "::" operator. DONE is true if this | |
1613 | expression is a complete postfix-expression; it is false if this | |
1614 | expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
02ed62dd MM |
1615 | iff this expression is the operand of '&'. TEMPLATE_P is true iff |
1616 | the qualified-id was of the form "A::template B". TEMPLATE_ARG_P | |
1617 | is true iff this qualified name appears as a template argument. */ | |
ee76b931 MM |
1618 | |
1619 | tree | |
3db45ab5 MS |
1620 | finish_qualified_id_expr (tree qualifying_class, |
1621 | tree expr, | |
02ed62dd | 1622 | bool done, |
3db45ab5 | 1623 | bool address_p, |
02ed62dd MM |
1624 | bool template_p, |
1625 | bool template_arg_p) | |
ee76b931 | 1626 | { |
d4f0f205 MM |
1627 | gcc_assert (TYPE_P (qualifying_class)); |
1628 | ||
5e08432e MM |
1629 | if (error_operand_p (expr)) |
1630 | return error_mark_node; | |
1631 | ||
7eab6e7b | 1632 | if (DECL_P (expr) || BASELINK_P (expr)) |
d4f0f205 | 1633 | mark_used (expr); |
d4f0f205 | 1634 | |
02ed62dd MM |
1635 | if (template_p) |
1636 | check_template_keyword (expr); | |
1637 | ||
ee76b931 MM |
1638 | /* If EXPR occurs as the operand of '&', use special handling that |
1639 | permits a pointer-to-member. */ | |
1640 | if (address_p && done) | |
1641 | { | |
1642 | if (TREE_CODE (expr) == SCOPE_REF) | |
1643 | expr = TREE_OPERAND (expr, 1); | |
c8094d83 | 1644 | expr = build_offset_ref (qualifying_class, expr, |
a5ac359a | 1645 | /*address_p=*/true); |
ee76b931 MM |
1646 | return expr; |
1647 | } | |
1648 | ||
02ed62dd MM |
1649 | /* Within the scope of a class, turn references to non-static |
1650 | members into expression of the form "this->...". */ | |
1651 | if (template_arg_p) | |
1652 | /* But, within a template argument, we do not want make the | |
1653 | transformation, as there is no "this" pointer. */ | |
1654 | ; | |
1655 | else if (TREE_CODE (expr) == FIELD_DECL) | |
43854f72 SB |
1656 | { |
1657 | push_deferring_access_checks (dk_no_check); | |
1658 | expr = finish_non_static_data_member (expr, current_class_ref, | |
1659 | qualifying_class); | |
1660 | pop_deferring_access_checks (); | |
1661 | } | |
ee76b931 MM |
1662 | else if (BASELINK_P (expr) && !processing_template_decl) |
1663 | { | |
ee76b931 MM |
1664 | tree fns; |
1665 | ||
1666 | /* See if any of the functions are non-static members. */ | |
1667 | fns = BASELINK_FUNCTIONS (expr); | |
1668 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
1669 | fns = TREE_OPERAND (fns, 0); | |
7e361ae6 | 1670 | /* If so, the expression may be relative to 'this'. */ |
821eaf2a | 1671 | if (!shared_member_p (fns) |
7e361ae6 JM |
1672 | && current_class_ref |
1673 | && DERIVED_FROM_P (qualifying_class, TREE_TYPE (current_class_ref))) | |
c8094d83 | 1674 | expr = (build_class_member_access_expr |
ee76b931 MM |
1675 | (maybe_dummy_object (qualifying_class, NULL), |
1676 | expr, | |
1677 | BASELINK_ACCESS_BINFO (expr), | |
5ade1ed2 DG |
1678 | /*preserve_reference=*/false, |
1679 | tf_warning_or_error)); | |
ee76b931 | 1680 | else if (done) |
a5ac359a MM |
1681 | /* The expression is a qualified name whose address is not |
1682 | being taken. */ | |
1683 | expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false); | |
ee76b931 MM |
1684 | } |
1685 | ||
1686 | return expr; | |
1687 | } | |
1688 | ||
b69b1501 MM |
1689 | /* Begin a statement-expression. The value returned must be passed to |
1690 | finish_stmt_expr. */ | |
b4c4a9ec | 1691 | |
c8094d83 | 1692 | tree |
3a978d72 | 1693 | begin_stmt_expr (void) |
b4c4a9ec | 1694 | { |
325c3691 | 1695 | return push_stmt_list (); |
35b1567d BC |
1696 | } |
1697 | ||
a5bcc582 | 1698 | /* Process the final expression of a statement expression. EXPR can be |
85a56c9d MM |
1699 | NULL, if the final expression is empty. Return a STATEMENT_LIST |
1700 | containing all the statements in the statement-expression, or | |
1701 | ERROR_MARK_NODE if there was an error. */ | |
a5bcc582 NS |
1702 | |
1703 | tree | |
325c3691 | 1704 | finish_stmt_expr_expr (tree expr, tree stmt_expr) |
a5bcc582 | 1705 | { |
72e4661a | 1706 | if (error_operand_p (expr)) |
76b9a2a1 AP |
1707 | { |
1708 | /* The type of the statement-expression is the type of the last | |
1709 | expression. */ | |
1710 | TREE_TYPE (stmt_expr) = error_mark_node; | |
1711 | return error_mark_node; | |
1712 | } | |
c8094d83 | 1713 | |
85a56c9d | 1714 | /* If the last statement does not have "void" type, then the value |
3db45ab5 | 1715 | of the last statement is the value of the entire expression. */ |
a5bcc582 NS |
1716 | if (expr) |
1717 | { | |
c6c7698d JM |
1718 | tree type = TREE_TYPE (expr); |
1719 | ||
1720 | if (processing_template_decl) | |
1721 | { | |
c2255bc4 | 1722 | expr = build_stmt (input_location, EXPR_STMT, expr); |
c6c7698d JM |
1723 | expr = add_stmt (expr); |
1724 | /* Mark the last statement so that we can recognize it as such at | |
1725 | template-instantiation time. */ | |
1726 | EXPR_STMT_STMT_EXPR_RESULT (expr) = 1; | |
1727 | } | |
1728 | else if (VOID_TYPE_P (type)) | |
a5bcc582 | 1729 | { |
c6c7698d JM |
1730 | /* Just treat this like an ordinary statement. */ |
1731 | expr = finish_expr_stmt (expr); | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | /* It actually has a value we need to deal with. First, force it | |
1736 | to be an rvalue so that we won't need to build up a copy | |
1737 | constructor call later when we try to assign it to something. */ | |
1738 | expr = force_rvalue (expr); | |
85a56c9d MM |
1739 | if (error_operand_p (expr)) |
1740 | return error_mark_node; | |
c6c7698d JM |
1741 | |
1742 | /* Update for array-to-pointer decay. */ | |
2692eb7d | 1743 | type = TREE_TYPE (expr); |
c6c7698d JM |
1744 | |
1745 | /* Wrap it in a CLEANUP_POINT_EXPR and add it to the list like a | |
1746 | normal statement, but don't convert to void or actually add | |
1747 | the EXPR_STMT. */ | |
1748 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
1749 | expr = maybe_cleanup_point_expr (expr); | |
1750 | add_stmt (expr); | |
85a56c9d | 1751 | } |
c6c7698d | 1752 | |
85a56c9d MM |
1753 | /* The type of the statement-expression is the type of the last |
1754 | expression. */ | |
1755 | TREE_TYPE (stmt_expr) = type; | |
a5bcc582 | 1756 | } |
c8094d83 | 1757 | |
85a56c9d | 1758 | return stmt_expr; |
a5bcc582 NS |
1759 | } |
1760 | ||
303b7406 NS |
1761 | /* Finish a statement-expression. EXPR should be the value returned |
1762 | by the previous begin_stmt_expr. Returns an expression | |
1763 | representing the statement-expression. */ | |
b4c4a9ec | 1764 | |
c8094d83 | 1765 | tree |
325c3691 | 1766 | finish_stmt_expr (tree stmt_expr, bool has_no_scope) |
b4c4a9ec | 1767 | { |
85a56c9d MM |
1768 | tree type; |
1769 | tree result; | |
325c3691 | 1770 | |
85a56c9d | 1771 | if (error_operand_p (stmt_expr)) |
d7b5fa31 JJ |
1772 | { |
1773 | pop_stmt_list (stmt_expr); | |
1774 | return error_mark_node; | |
1775 | } | |
325c3691 | 1776 | |
85a56c9d | 1777 | gcc_assert (TREE_CODE (stmt_expr) == STATEMENT_LIST); |
325c3691 | 1778 | |
85a56c9d MM |
1779 | type = TREE_TYPE (stmt_expr); |
1780 | result = pop_stmt_list (stmt_expr); | |
c6c7698d | 1781 | TREE_TYPE (result) = type; |
6f80451c | 1782 | |
a5bcc582 | 1783 | if (processing_template_decl) |
325c3691 RH |
1784 | { |
1785 | result = build_min (STMT_EXPR, type, result); | |
1786 | TREE_SIDE_EFFECTS (result) = 1; | |
1787 | STMT_EXPR_NO_SCOPE (result) = has_no_scope; | |
1788 | } | |
c6c7698d | 1789 | else if (CLASS_TYPE_P (type)) |
a5bcc582 | 1790 | { |
c6c7698d JM |
1791 | /* Wrap the statement-expression in a TARGET_EXPR so that the |
1792 | temporary object created by the final expression is destroyed at | |
1793 | the end of the full-expression containing the | |
1794 | statement-expression. */ | |
1795 | result = force_target_expr (type, result); | |
a5bcc582 | 1796 | } |
325c3691 | 1797 | |
b4c4a9ec MM |
1798 | return result; |
1799 | } | |
1800 | ||
c2acde1e JM |
1801 | /* Returns the expression which provides the value of STMT_EXPR. */ |
1802 | ||
1803 | tree | |
1804 | stmt_expr_value_expr (tree stmt_expr) | |
1805 | { | |
1806 | tree t = STMT_EXPR_STMT (stmt_expr); | |
1807 | ||
1808 | if (TREE_CODE (t) == BIND_EXPR) | |
1809 | t = BIND_EXPR_BODY (t); | |
1810 | ||
9de0e916 | 1811 | if (TREE_CODE (t) == STATEMENT_LIST && STATEMENT_LIST_TAIL (t)) |
c2acde1e JM |
1812 | t = STATEMENT_LIST_TAIL (t)->stmt; |
1813 | ||
1814 | if (TREE_CODE (t) == EXPR_STMT) | |
1815 | t = EXPR_STMT_EXPR (t); | |
1816 | ||
1817 | return t; | |
1818 | } | |
1819 | ||
b3445994 | 1820 | /* Perform Koenig lookup. FN is the postfix-expression representing |
fa531100 MM |
1821 | the function (or functions) to call; ARGS are the arguments to the |
1822 | call. Returns the functions to be considered by overload | |
1823 | resolution. */ | |
b3445994 MM |
1824 | |
1825 | tree | |
c166b898 | 1826 | perform_koenig_lookup (tree fn, VEC(tree,gc) *args) |
b3445994 MM |
1827 | { |
1828 | tree identifier = NULL_TREE; | |
1829 | tree functions = NULL_TREE; | |
d095e03c | 1830 | tree tmpl_args = NULL_TREE; |
4e6a9725 | 1831 | bool template_id = false; |
d095e03c JM |
1832 | |
1833 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
1834 | { | |
4e6a9725 JM |
1835 | /* Use a separate flag to handle null args. */ |
1836 | template_id = true; | |
d095e03c JM |
1837 | tmpl_args = TREE_OPERAND (fn, 1); |
1838 | fn = TREE_OPERAND (fn, 0); | |
1839 | } | |
b3445994 MM |
1840 | |
1841 | /* Find the name of the overloaded function. */ | |
1842 | if (TREE_CODE (fn) == IDENTIFIER_NODE) | |
1843 | identifier = fn; | |
1844 | else if (is_overloaded_fn (fn)) | |
1845 | { | |
1846 | functions = fn; | |
1847 | identifier = DECL_NAME (get_first_fn (functions)); | |
1848 | } | |
1849 | else if (DECL_P (fn)) | |
1850 | { | |
1851 | functions = fn; | |
1852 | identifier = DECL_NAME (fn); | |
1853 | } | |
1854 | ||
1855 | /* A call to a namespace-scope function using an unqualified name. | |
1856 | ||
1857 | Do Koenig lookup -- unless any of the arguments are | |
1858 | type-dependent. */ | |
d095e03c JM |
1859 | if (!any_type_dependent_arguments_p (args) |
1860 | && !any_dependent_template_arguments_p (tmpl_args)) | |
b3445994 MM |
1861 | { |
1862 | fn = lookup_arg_dependent (identifier, functions, args); | |
1863 | if (!fn) | |
1864 | /* The unqualified name could not be resolved. */ | |
1865 | fn = unqualified_fn_lookup_error (identifier); | |
1866 | } | |
b3445994 | 1867 | |
4e6a9725 JM |
1868 | if (fn && template_id) |
1869 | fn = build2 (TEMPLATE_ID_EXPR, unknown_type_node, fn, tmpl_args); | |
d095e03c | 1870 | |
b3445994 MM |
1871 | return fn; |
1872 | } | |
1873 | ||
c166b898 ILT |
1874 | /* Generate an expression for `FN (ARGS)'. This may change the |
1875 | contents of ARGS. | |
4ba126e4 MM |
1876 | |
1877 | If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
1878 | as a virtual call, even if FN is virtual. (This flag is set when | |
1879 | encountering an expression where the function name is explicitly | |
1880 | qualified. For example a call to `X::f' never generates a virtual | |
1881 | call.) | |
1882 | ||
1883 | Returns code for the call. */ | |
b4c4a9ec | 1884 | |
c8094d83 | 1885 | tree |
c166b898 ILT |
1886 | finish_call_expr (tree fn, VEC(tree,gc) **args, bool disallow_virtual, |
1887 | bool koenig_p, tsubst_flags_t complain) | |
b4c4a9ec | 1888 | { |
d17811fd MM |
1889 | tree result; |
1890 | tree orig_fn; | |
c166b898 | 1891 | VEC(tree,gc) *orig_args = NULL; |
d17811fd | 1892 | |
c166b898 | 1893 | if (fn == error_mark_node) |
4ba126e4 MM |
1894 | return error_mark_node; |
1895 | ||
4860b874 | 1896 | gcc_assert (!TYPE_P (fn)); |
a759e627 | 1897 | |
d17811fd | 1898 | orig_fn = fn; |
d17811fd MM |
1899 | |
1900 | if (processing_template_decl) | |
1901 | { | |
1902 | if (type_dependent_expression_p (fn) | |
c166b898 | 1903 | || any_type_dependent_arguments_p (*args)) |
6d80c4b9 | 1904 | { |
c166b898 | 1905 | result = build_nt_call_vec (fn, *args); |
5094a795 | 1906 | KOENIG_LOOKUP_P (result) = koenig_p; |
be461b8f JJ |
1907 | if (cfun) |
1908 | { | |
1909 | do | |
1910 | { | |
1911 | tree fndecl = OVL_CURRENT (fn); | |
1912 | if (TREE_CODE (fndecl) != FUNCTION_DECL | |
1913 | || !TREE_THIS_VOLATILE (fndecl)) | |
1914 | break; | |
1915 | fn = OVL_NEXT (fn); | |
1916 | } | |
1917 | while (fn); | |
1918 | if (!fn) | |
1919 | current_function_returns_abnormally = 1; | |
1920 | } | |
6d80c4b9 MM |
1921 | return result; |
1922 | } | |
c166b898 | 1923 | orig_args = make_tree_vector_copy (*args); |
d17811fd MM |
1924 | if (!BASELINK_P (fn) |
1925 | && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
1926 | && TREE_TYPE (fn) != unknown_type_node) | |
1927 | fn = build_non_dependent_expr (fn); | |
c166b898 | 1928 | make_args_non_dependent (*args); |
d17811fd MM |
1929 | } |
1930 | ||
eff3a276 MM |
1931 | if (is_overloaded_fn (fn)) |
1932 | fn = baselink_for_fns (fn); | |
a723baf1 | 1933 | |
d17811fd | 1934 | result = NULL_TREE; |
4ba126e4 | 1935 | if (BASELINK_P (fn)) |
03d82991 | 1936 | { |
4ba126e4 MM |
1937 | tree object; |
1938 | ||
1939 | /* A call to a member function. From [over.call.func]: | |
1940 | ||
1941 | If the keyword this is in scope and refers to the class of | |
1942 | that member function, or a derived class thereof, then the | |
1943 | function call is transformed into a qualified function call | |
1944 | using (*this) as the postfix-expression to the left of the | |
1945 | . operator.... [Otherwise] a contrived object of type T | |
c8094d83 | 1946 | becomes the implied object argument. |
4ba126e4 | 1947 | |
0cbd7506 | 1948 | This paragraph is unclear about this situation: |
4ba126e4 MM |
1949 | |
1950 | struct A { void f(); }; | |
1951 | struct B : public A {}; | |
1952 | struct C : public A { void g() { B::f(); }}; | |
1953 | ||
1954 | In particular, for `B::f', this paragraph does not make clear | |
c8094d83 | 1955 | whether "the class of that member function" refers to `A' or |
4ba126e4 | 1956 | to `B'. We believe it refers to `B'. */ |
c8094d83 | 1957 | if (current_class_type |
4ba126e4 MM |
1958 | && DERIVED_FROM_P (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1959 | current_class_type) | |
1960 | && current_class_ref) | |
127b8136 MM |
1961 | object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1962 | NULL); | |
4ba126e4 MM |
1963 | else |
1964 | { | |
1965 | tree representative_fn; | |
b4c4a9ec | 1966 | |
4ba126e4 MM |
1967 | representative_fn = BASELINK_FUNCTIONS (fn); |
1968 | if (TREE_CODE (representative_fn) == TEMPLATE_ID_EXPR) | |
1969 | representative_fn = TREE_OPERAND (representative_fn, 0); | |
1970 | representative_fn = get_first_fn (representative_fn); | |
1971 | object = build_dummy_object (DECL_CONTEXT (representative_fn)); | |
1972 | } | |
b4c4a9ec | 1973 | |
d17811fd MM |
1974 | if (processing_template_decl) |
1975 | { | |
1976 | if (type_dependent_expression_p (object)) | |
c166b898 ILT |
1977 | { |
1978 | tree ret = build_nt_call_vec (orig_fn, orig_args); | |
1979 | release_tree_vector (orig_args); | |
1980 | return ret; | |
1981 | } | |
d17811fd MM |
1982 | object = build_non_dependent_expr (object); |
1983 | } | |
1984 | ||
1985 | result = build_new_method_call (object, fn, args, NULL_TREE, | |
c8094d83 | 1986 | (disallow_virtual |
63c9a190 | 1987 | ? LOOKUP_NONVIRTUAL : 0), |
5ade1ed2 DG |
1988 | /*fn_p=*/NULL, |
1989 | complain); | |
4ba126e4 MM |
1990 | } |
1991 | else if (is_overloaded_fn (fn)) | |
16c35a1f RH |
1992 | { |
1993 | /* If the function is an overloaded builtin, resolve it. */ | |
1994 | if (TREE_CODE (fn) == FUNCTION_DECL | |
58646b77 PB |
1995 | && (DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL |
1996 | || DECL_BUILT_IN_CLASS (fn) == BUILT_IN_MD)) | |
c2255bc4 | 1997 | result = resolve_overloaded_builtin (input_location, fn, *args); |
16c35a1f RH |
1998 | |
1999 | if (!result) | |
2000 | /* A call to a namespace-scope function. */ | |
5094a795 | 2001 | result = build_new_function_call (fn, args, koenig_p, complain); |
16c35a1f | 2002 | } |
a723baf1 MM |
2003 | else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) |
2004 | { | |
c166b898 | 2005 | if (!VEC_empty (tree, *args)) |
a723baf1 MM |
2006 | error ("arguments to destructor are not allowed"); |
2007 | /* Mark the pseudo-destructor call as having side-effects so | |
2008 | that we do not issue warnings about its use. */ | |
2009 | result = build1 (NOP_EXPR, | |
2010 | void_type_node, | |
2011 | TREE_OPERAND (fn, 0)); | |
2012 | TREE_SIDE_EFFECTS (result) = 1; | |
a723baf1 | 2013 | } |
4ba126e4 | 2014 | else if (CLASS_TYPE_P (TREE_TYPE (fn))) |
d17811fd MM |
2015 | /* If the "function" is really an object of class type, it might |
2016 | have an overloaded `operator ()'. */ | |
c166b898 | 2017 | result = build_op_call (fn, args, complain); |
16c35a1f | 2018 | |
d17811fd MM |
2019 | if (!result) |
2020 | /* A call where the function is unknown. */ | |
c166b898 | 2021 | result = cp_build_function_call_vec (fn, args, complain); |
4ba126e4 | 2022 | |
d17811fd | 2023 | if (processing_template_decl) |
6d80c4b9 | 2024 | { |
c166b898 | 2025 | result = build_call_vec (TREE_TYPE (result), orig_fn, orig_args); |
5094a795 | 2026 | KOENIG_LOOKUP_P (result) = koenig_p; |
c166b898 | 2027 | release_tree_vector (orig_args); |
6d80c4b9 | 2028 | } |
c166b898 | 2029 | |
d17811fd | 2030 | return result; |
b4c4a9ec MM |
2031 | } |
2032 | ||
2033 | /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
2034 | is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
2035 | POSTDECREMENT_EXPR.) */ | |
2036 | ||
c8094d83 | 2037 | tree |
3a978d72 | 2038 | finish_increment_expr (tree expr, enum tree_code code) |
b4c4a9ec | 2039 | { |
5ade1ed2 | 2040 | return build_x_unary_op (code, expr, tf_warning_or_error); |
b4c4a9ec MM |
2041 | } |
2042 | ||
2043 | /* Finish a use of `this'. Returns an expression for `this'. */ | |
2044 | ||
c8094d83 | 2045 | tree |
3a978d72 | 2046 | finish_this_expr (void) |
b4c4a9ec MM |
2047 | { |
2048 | tree result; | |
2049 | ||
2050 | if (current_class_ptr) | |
2051 | { | |
b4c4a9ec MM |
2052 | result = current_class_ptr; |
2053 | } | |
2054 | else if (current_function_decl | |
2055 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
2056 | { | |
9e637a26 | 2057 | error ("%<this%> is unavailable for static member functions"); |
b4c4a9ec MM |
2058 | result = error_mark_node; |
2059 | } | |
2060 | else | |
2061 | { | |
2062 | if (current_function_decl) | |
9e637a26 | 2063 | error ("invalid use of %<this%> in non-member function"); |
b4c4a9ec | 2064 | else |
9e637a26 | 2065 | error ("invalid use of %<this%> at top level"); |
b4c4a9ec MM |
2066 | result = error_mark_node; |
2067 | } | |
2068 | ||
2069 | return result; | |
2070 | } | |
2071 | ||
a723baf1 MM |
2072 | /* Finish a pseudo-destructor expression. If SCOPE is NULL, the |
2073 | expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
2074 | the TYPE for the type given. If SCOPE is non-NULL, the expression | |
2075 | was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
b4c4a9ec | 2076 | |
c8094d83 | 2077 | tree |
3a978d72 | 2078 | finish_pseudo_destructor_expr (tree object, tree scope, tree destructor) |
b4c4a9ec | 2079 | { |
09b1ccd6 | 2080 | if (object == error_mark_node || destructor == error_mark_node) |
a723baf1 | 2081 | return error_mark_node; |
40242ccf | 2082 | |
50bc768d | 2083 | gcc_assert (TYPE_P (destructor)); |
b4c4a9ec | 2084 | |
a723baf1 MM |
2085 | if (!processing_template_decl) |
2086 | { | |
2087 | if (scope == error_mark_node) | |
2088 | { | |
2089 | error ("invalid qualifying scope in pseudo-destructor name"); | |
2090 | return error_mark_node; | |
2091 | } | |
5cf10afb AP |
2092 | if (scope && TYPE_P (scope) && !check_dtor_name (scope, destructor)) |
2093 | { | |
2094 | error ("qualified type %qT does not match destructor name ~%qT", | |
2095 | scope, destructor); | |
2096 | return error_mark_node; | |
2097 | } | |
2098 | ||
c8094d83 | 2099 | |
26bcf8fc MM |
2100 | /* [expr.pseudo] says both: |
2101 | ||
0cbd7506 | 2102 | The type designated by the pseudo-destructor-name shall be |
26bcf8fc MM |
2103 | the same as the object type. |
2104 | ||
0cbd7506 | 2105 | and: |
26bcf8fc | 2106 | |
0cbd7506 | 2107 | The cv-unqualified versions of the object type and of the |
26bcf8fc MM |
2108 | type designated by the pseudo-destructor-name shall be the |
2109 | same type. | |
2110 | ||
0cbd7506 MS |
2111 | We implement the more generous second sentence, since that is |
2112 | what most other compilers do. */ | |
c8094d83 | 2113 | if (!same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (object), |
26bcf8fc | 2114 | destructor)) |
a723baf1 | 2115 | { |
a82e1a7d | 2116 | error ("%qE is not of type %qT", object, destructor); |
a723baf1 MM |
2117 | return error_mark_node; |
2118 | } | |
2119 | } | |
b4c4a9ec | 2120 | |
f293ce4b | 2121 | return build3 (PSEUDO_DTOR_EXPR, void_type_node, object, scope, destructor); |
b4c4a9ec MM |
2122 | } |
2123 | ||
ce4a0391 MM |
2124 | /* Finish an expression of the form CODE EXPR. */ |
2125 | ||
2126 | tree | |
3a978d72 | 2127 | finish_unary_op_expr (enum tree_code code, tree expr) |
ce4a0391 | 2128 | { |
5ade1ed2 | 2129 | tree result = build_x_unary_op (code, expr, tf_warning_or_error); |
7c355bca ML |
2130 | /* Inside a template, build_x_unary_op does not fold the |
2131 | expression. So check whether the result is folded before | |
2132 | setting TREE_NEGATED_INT. */ | |
2133 | if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST | |
88b4335f | 2134 | && TREE_CODE (result) == INTEGER_CST |
8df83eae | 2135 | && !TYPE_UNSIGNED (TREE_TYPE (result)) |
88b4335f | 2136 | && INT_CST_LT (result, integer_zero_node)) |
6fc98adf MM |
2137 | { |
2138 | /* RESULT may be a cached INTEGER_CST, so we must copy it before | |
2139 | setting TREE_NEGATED_INT. */ | |
2140 | result = copy_node (result); | |
2141 | TREE_NEGATED_INT (result) = 1; | |
2142 | } | |
59c0753d | 2143 | if (TREE_OVERFLOW_P (result) && !TREE_OVERFLOW_P (expr)) |
c2255bc4 | 2144 | overflow_warning (input_location, result); |
59c0753d | 2145 | |
ce4a0391 MM |
2146 | return result; |
2147 | } | |
2148 | ||
a723baf1 | 2149 | /* Finish a compound-literal expression. TYPE is the type to which |
09357846 | 2150 | the CONSTRUCTOR in COMPOUND_LITERAL is being cast. */ |
a723baf1 MM |
2151 | |
2152 | tree | |
09357846 | 2153 | finish_compound_literal (tree type, tree compound_literal) |
a723baf1 | 2154 | { |
326a4d4e JJ |
2155 | if (type == error_mark_node) |
2156 | return error_mark_node; | |
2157 | ||
2b643eda MM |
2158 | if (!TYPE_OBJ_P (type)) |
2159 | { | |
2160 | error ("compound literal of non-object type %qT", type); | |
2161 | return error_mark_node; | |
2162 | } | |
2163 | ||
a723baf1 | 2164 | if (processing_template_decl) |
a723baf1 | 2165 | { |
e92fb501 MM |
2166 | TREE_TYPE (compound_literal) = type; |
2167 | /* Mark the expression as a compound literal. */ | |
2168 | TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
2169 | return compound_literal; | |
a723baf1 MM |
2170 | } |
2171 | ||
df794884 | 2172 | type = complete_type (type); |
09357846 JM |
2173 | |
2174 | if (TYPE_NON_AGGREGATE_CLASS (type)) | |
2175 | { | |
2176 | /* Trying to deal with a CONSTRUCTOR instead of a TREE_LIST | |
2177 | everywhere that deals with function arguments would be a pain, so | |
2178 | just wrap it in a TREE_LIST. The parser set a flag so we know | |
2179 | that it came from T{} rather than T({}). */ | |
2180 | CONSTRUCTOR_IS_DIRECT_INIT (compound_literal) = 1; | |
2181 | compound_literal = build_tree_list (NULL_TREE, compound_literal); | |
2182 | return build_functional_cast (type, compound_literal, tf_error); | |
2183 | } | |
2184 | ||
23bee8f4 JJ |
2185 | if (TREE_CODE (type) == ARRAY_TYPE |
2186 | && check_array_initializer (NULL_TREE, type, compound_literal)) | |
2187 | return error_mark_node; | |
df794884 JM |
2188 | compound_literal = reshape_init (type, compound_literal); |
2189 | if (TREE_CODE (type) == ARRAY_TYPE) | |
2190 | cp_complete_array_type (&type, compound_literal, false); | |
2191 | compound_literal = digest_init (type, compound_literal); | |
09357846 JM |
2192 | if ((!at_function_scope_p () || cp_type_readonly (type)) |
2193 | && initializer_constant_valid_p (compound_literal, type)) | |
2194 | { | |
2195 | tree decl = create_temporary_var (type); | |
2196 | DECL_INITIAL (decl) = compound_literal; | |
2197 | TREE_STATIC (decl) = 1; | |
2198 | decl = pushdecl_top_level (decl); | |
2199 | DECL_NAME (decl) = make_anon_name (); | |
2200 | SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl)); | |
2201 | return decl; | |
2202 | } | |
2203 | else | |
2204 | return get_target_expr (compound_literal); | |
a723baf1 MM |
2205 | } |
2206 | ||
5f261ba9 MM |
2207 | /* Return the declaration for the function-name variable indicated by |
2208 | ID. */ | |
2209 | ||
2210 | tree | |
2211 | finish_fname (tree id) | |
2212 | { | |
2213 | tree decl; | |
c8094d83 | 2214 | |
3ba09659 | 2215 | decl = fname_decl (input_location, C_RID_CODE (id), id); |
5f261ba9 | 2216 | if (processing_template_decl) |
10b1d5e7 | 2217 | decl = DECL_NAME (decl); |
5f261ba9 MM |
2218 | return decl; |
2219 | } | |
2220 | ||
8014a339 | 2221 | /* Finish a translation unit. */ |
ce4a0391 | 2222 | |
c8094d83 | 2223 | void |
3a978d72 | 2224 | finish_translation_unit (void) |
ce4a0391 MM |
2225 | { |
2226 | /* In case there were missing closebraces, | |
2227 | get us back to the global binding level. */ | |
273a708f | 2228 | pop_everything (); |
ce4a0391 MM |
2229 | while (current_namespace != global_namespace) |
2230 | pop_namespace (); | |
0ba8a114 | 2231 | |
c6002625 | 2232 | /* Do file scope __FUNCTION__ et al. */ |
0ba8a114 | 2233 | finish_fname_decls (); |
ce4a0391 MM |
2234 | } |
2235 | ||
b4c4a9ec MM |
2236 | /* Finish a template type parameter, specified as AGGR IDENTIFIER. |
2237 | Returns the parameter. */ | |
2238 | ||
c8094d83 | 2239 | tree |
3a978d72 | 2240 | finish_template_type_parm (tree aggr, tree identifier) |
b4c4a9ec | 2241 | { |
6eabb241 | 2242 | if (aggr != class_type_node) |
b4c4a9ec | 2243 | { |
cbe5f3b3 | 2244 | permerror (input_location, "template type parameters must use the keyword %<class%> or %<typename%>"); |
b4c4a9ec MM |
2245 | aggr = class_type_node; |
2246 | } | |
2247 | ||
2248 | return build_tree_list (aggr, identifier); | |
2249 | } | |
2250 | ||
2251 | /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
2252 | Returns the parameter. */ | |
2253 | ||
c8094d83 | 2254 | tree |
3a978d72 | 2255 | finish_template_template_parm (tree aggr, tree identifier) |
b4c4a9ec | 2256 | { |
c2255bc4 AH |
2257 | tree decl = build_decl (input_location, |
2258 | TYPE_DECL, identifier, NULL_TREE); | |
b4c4a9ec MM |
2259 | tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); |
2260 | DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
2261 | DECL_TEMPLATE_RESULT (tmpl) = decl; | |
c727aa5e | 2262 | DECL_ARTIFICIAL (decl) = 1; |
b4c4a9ec MM |
2263 | end_template_decl (); |
2264 | ||
50bc768d | 2265 | gcc_assert (DECL_TEMPLATE_PARMS (tmpl)); |
b37bf5bd | 2266 | |
85d85234 DG |
2267 | check_default_tmpl_args (decl, DECL_TEMPLATE_PARMS (tmpl), |
2268 | /*is_primary=*/true, /*is_partial=*/false, | |
2269 | /*is_friend=*/0); | |
2270 | ||
b4c4a9ec MM |
2271 | return finish_template_type_parm (aggr, tmpl); |
2272 | } | |
ce4a0391 | 2273 | |
8ba658ee MM |
2274 | /* ARGUMENT is the default-argument value for a template template |
2275 | parameter. If ARGUMENT is invalid, issue error messages and return | |
2276 | the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
2277 | ||
2278 | tree | |
2279 | check_template_template_default_arg (tree argument) | |
2280 | { | |
2281 | if (TREE_CODE (argument) != TEMPLATE_DECL | |
2282 | && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
8ba658ee MM |
2283 | && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) |
2284 | { | |
a3a503a5 | 2285 | if (TREE_CODE (argument) == TYPE_DECL) |
e488a090 VR |
2286 | error ("invalid use of type %qT as a default value for a template " |
2287 | "template-parameter", TREE_TYPE (argument)); | |
a3a503a5 GB |
2288 | else |
2289 | error ("invalid default argument for a template template parameter"); | |
8ba658ee MM |
2290 | return error_mark_node; |
2291 | } | |
2292 | ||
2293 | return argument; | |
2294 | } | |
2295 | ||
ce4a0391 MM |
2296 | /* Begin a class definition, as indicated by T. */ |
2297 | ||
2298 | tree | |
b9e75696 | 2299 | begin_class_definition (tree t, tree attributes) |
ce4a0391 | 2300 | { |
7d2f0ecd | 2301 | if (error_operand_p (t) || error_operand_p (TYPE_MAIN_DECL (t))) |
7437519c ZW |
2302 | return error_mark_node; |
2303 | ||
522d6614 NS |
2304 | if (processing_template_parmlist) |
2305 | { | |
a82e1a7d | 2306 | error ("definition of %q#T inside template parameter list", t); |
522d6614 NS |
2307 | return error_mark_node; |
2308 | } | |
47ee8904 MM |
2309 | /* A non-implicit typename comes from code like: |
2310 | ||
2311 | template <typename T> struct A { | |
0cbd7506 | 2312 | template <typename U> struct A<T>::B ... |
47ee8904 MM |
2313 | |
2314 | This is erroneous. */ | |
2315 | else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2316 | { | |
a82e1a7d | 2317 | error ("invalid definition of qualified type %qT", t); |
47ee8904 MM |
2318 | t = error_mark_node; |
2319 | } | |
2320 | ||
9e1e64ec | 2321 | if (t == error_mark_node || ! MAYBE_CLASS_TYPE_P (t)) |
ce4a0391 | 2322 | { |
9e1e64ec | 2323 | t = make_class_type (RECORD_TYPE); |
bd3d082e | 2324 | pushtag (make_anon_name (), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2325 | } |
830fcda8 | 2326 | |
b4f70b3d | 2327 | /* Update the location of the decl. */ |
f31686a3 | 2328 | DECL_SOURCE_LOCATION (TYPE_NAME (t)) = input_location; |
c8094d83 | 2329 | |
4c571114 | 2330 | if (TYPE_BEING_DEFINED (t)) |
ce4a0391 | 2331 | { |
9e1e64ec | 2332 | t = make_class_type (TREE_CODE (t)); |
bd3d082e | 2333 | pushtag (TYPE_IDENTIFIER (t), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2334 | } |
ff350acd | 2335 | maybe_process_partial_specialization (t); |
29370796 | 2336 | pushclass (t); |
ce4a0391 | 2337 | TYPE_BEING_DEFINED (t) = 1; |
b9e75696 JM |
2338 | |
2339 | cplus_decl_attributes (&t, attributes, (int) ATTR_FLAG_TYPE_IN_PLACE); | |
2340 | ||
c0694c4b MM |
2341 | if (flag_pack_struct) |
2342 | { | |
2343 | tree v; | |
2344 | TYPE_PACKED (t) = 1; | |
2345 | /* Even though the type is being defined for the first time | |
2346 | here, there might have been a forward declaration, so there | |
2347 | might be cv-qualified variants of T. */ | |
2348 | for (v = TYPE_NEXT_VARIANT (t); v; v = TYPE_NEXT_VARIANT (v)) | |
2349 | TYPE_PACKED (v) = 1; | |
2350 | } | |
ce4a0391 MM |
2351 | /* Reset the interface data, at the earliest possible |
2352 | moment, as it might have been set via a class foo; | |
2353 | before. */ | |
1951a1b6 JM |
2354 | if (! TYPE_ANONYMOUS_P (t)) |
2355 | { | |
c533e34d | 2356 | struct c_fileinfo *finfo = get_fileinfo (input_filename); |
5d709b00 | 2357 | CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only; |
1951a1b6 | 2358 | SET_CLASSTYPE_INTERFACE_UNKNOWN_X |
5d709b00 | 2359 | (t, finfo->interface_unknown); |
1951a1b6 | 2360 | } |
ce4a0391 | 2361 | reset_specialization(); |
c8094d83 | 2362 | |
b7975aed MM |
2363 | /* Make a declaration for this class in its own scope. */ |
2364 | build_self_reference (); | |
2365 | ||
830fcda8 | 2366 | return t; |
ce4a0391 MM |
2367 | } |
2368 | ||
61a127b3 MM |
2369 | /* Finish the member declaration given by DECL. */ |
2370 | ||
2371 | void | |
3a978d72 | 2372 | finish_member_declaration (tree decl) |
61a127b3 MM |
2373 | { |
2374 | if (decl == error_mark_node || decl == NULL_TREE) | |
2375 | return; | |
2376 | ||
2377 | if (decl == void_type_node) | |
2378 | /* The COMPONENT was a friend, not a member, and so there's | |
2379 | nothing for us to do. */ | |
2380 | return; | |
2381 | ||
2382 | /* We should see only one DECL at a time. */ | |
50bc768d | 2383 | gcc_assert (TREE_CHAIN (decl) == NULL_TREE); |
61a127b3 MM |
2384 | |
2385 | /* Set up access control for DECL. */ | |
c8094d83 | 2386 | TREE_PRIVATE (decl) |
61a127b3 | 2387 | = (current_access_specifier == access_private_node); |
c8094d83 | 2388 | TREE_PROTECTED (decl) |
61a127b3 MM |
2389 | = (current_access_specifier == access_protected_node); |
2390 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
2391 | { | |
17aec3eb RK |
2392 | TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); |
2393 | TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
61a127b3 MM |
2394 | } |
2395 | ||
2396 | /* Mark the DECL as a member of the current class. */ | |
4f1c5b7d | 2397 | DECL_CONTEXT (decl) = current_class_type; |
61a127b3 | 2398 | |
b1d7b1c0 | 2399 | /* Check for bare parameter packs in the member variable declaration. */ |
1ad8aeeb | 2400 | if (TREE_CODE (decl) == FIELD_DECL) |
4439d02f | 2401 | { |
7b3e2d46 | 2402 | if (check_for_bare_parameter_packs (TREE_TYPE (decl))) |
4439d02f | 2403 | TREE_TYPE (decl) = error_mark_node; |
7b3e2d46 | 2404 | if (check_for_bare_parameter_packs (DECL_ATTRIBUTES (decl))) |
4439d02f DG |
2405 | DECL_ATTRIBUTES (decl) = NULL_TREE; |
2406 | } | |
b1d7b1c0 | 2407 | |
421844e7 MM |
2408 | /* [dcl.link] |
2409 | ||
2410 | A C language linkage is ignored for the names of class members | |
2411 | and the member function type of class member functions. */ | |
2412 | if (DECL_LANG_SPECIFIC (decl) && DECL_LANGUAGE (decl) == lang_c) | |
5d2ed28c | 2413 | SET_DECL_LANGUAGE (decl, lang_cplusplus); |
421844e7 | 2414 | |
61a127b3 MM |
2415 | /* Put functions on the TYPE_METHODS list and everything else on the |
2416 | TYPE_FIELDS list. Note that these are built up in reverse order. | |
2417 | We reverse them (to obtain declaration order) in finish_struct. */ | |
c8094d83 | 2418 | if (TREE_CODE (decl) == FUNCTION_DECL |
61a127b3 MM |
2419 | || DECL_FUNCTION_TEMPLATE_P (decl)) |
2420 | { | |
2421 | /* We also need to add this function to the | |
2422 | CLASSTYPE_METHOD_VEC. */ | |
b77fe7b4 NS |
2423 | if (add_method (current_class_type, decl, NULL_TREE)) |
2424 | { | |
2425 | TREE_CHAIN (decl) = TYPE_METHODS (current_class_type); | |
2426 | TYPE_METHODS (current_class_type) = decl; | |
f139561c | 2427 | |
b77fe7b4 NS |
2428 | maybe_add_class_template_decl_list (current_class_type, decl, |
2429 | /*friend_p=*/0); | |
2430 | } | |
61a127b3 | 2431 | } |
f139561c | 2432 | /* Enter the DECL into the scope of the class. */ |
98ed9dae | 2433 | else if ((TREE_CODE (decl) == USING_DECL && !DECL_DEPENDENT_P (decl)) |
399dedb9 | 2434 | || pushdecl_class_level (decl)) |
61a127b3 MM |
2435 | { |
2436 | /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
2437 | go at the beginning. The reason is that lookup_field_1 | |
2438 | searches the list in order, and we want a field name to | |
2439 | override a type name so that the "struct stat hack" will | |
2440 | work. In particular: | |
2441 | ||
2442 | struct S { enum E { }; int E } s; | |
2443 | s.E = 3; | |
2444 | ||
0e339752 | 2445 | is valid. In addition, the FIELD_DECLs must be maintained in |
61a127b3 MM |
2446 | declaration order so that class layout works as expected. |
2447 | However, we don't need that order until class layout, so we | |
2448 | save a little time by putting FIELD_DECLs on in reverse order | |
2449 | here, and then reversing them in finish_struct_1. (We could | |
2450 | also keep a pointer to the correct insertion points in the | |
2451 | list.) */ | |
2452 | ||
2453 | if (TREE_CODE (decl) == TYPE_DECL) | |
c8094d83 | 2454 | TYPE_FIELDS (current_class_type) |
61a127b3 MM |
2455 | = chainon (TYPE_FIELDS (current_class_type), decl); |
2456 | else | |
2457 | { | |
2458 | TREE_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
2459 | TYPE_FIELDS (current_class_type) = decl; | |
2460 | } | |
8f032717 | 2461 | |
c8094d83 | 2462 | maybe_add_class_template_decl_list (current_class_type, decl, |
f139561c | 2463 | /*friend_p=*/0); |
61a127b3 | 2464 | } |
5e2f4cd2 MM |
2465 | |
2466 | if (pch_file) | |
2467 | note_decl_for_pch (decl); | |
2468 | } | |
2469 | ||
2470 | /* DECL has been declared while we are building a PCH file. Perform | |
2471 | actions that we might normally undertake lazily, but which can be | |
2472 | performed now so that they do not have to be performed in | |
2473 | translation units which include the PCH file. */ | |
2474 | ||
2475 | void | |
2476 | note_decl_for_pch (tree decl) | |
2477 | { | |
2478 | gcc_assert (pch_file); | |
2479 | ||
5e2f4cd2 MM |
2480 | /* There's a good chance that we'll have to mangle names at some |
2481 | point, even if only for emission in debugging information. */ | |
ec0897de JM |
2482 | if ((TREE_CODE (decl) == VAR_DECL |
2483 | || TREE_CODE (decl) == FUNCTION_DECL) | |
2484 | && !processing_template_decl) | |
5e2f4cd2 | 2485 | mangle_decl (decl); |
61a127b3 MM |
2486 | } |
2487 | ||
306ef644 | 2488 | /* Finish processing a complete template declaration. The PARMS are |
36a117a5 MM |
2489 | the template parameters. */ |
2490 | ||
2491 | void | |
3a978d72 | 2492 | finish_template_decl (tree parms) |
36a117a5 MM |
2493 | { |
2494 | if (parms) | |
2495 | end_template_decl (); | |
2496 | else | |
2497 | end_specialization (); | |
2498 | } | |
2499 | ||
509fc277 | 2500 | /* Finish processing a template-id (which names a type) of the form |
36a117a5 | 2501 | NAME < ARGS >. Return the TYPE_DECL for the type named by the |
838dfd8a | 2502 | template-id. If ENTERING_SCOPE is nonzero we are about to enter |
36a117a5 MM |
2503 | the scope of template-id indicated. */ |
2504 | ||
2505 | tree | |
3a978d72 | 2506 | finish_template_type (tree name, tree args, int entering_scope) |
36a117a5 MM |
2507 | { |
2508 | tree decl; | |
2509 | ||
2510 | decl = lookup_template_class (name, args, | |
42eaed49 | 2511 | NULL_TREE, NULL_TREE, entering_scope, |
23fca1f5 | 2512 | tf_warning_or_error | tf_user); |
36a117a5 MM |
2513 | if (decl != error_mark_node) |
2514 | decl = TYPE_STUB_DECL (decl); | |
2515 | ||
2516 | return decl; | |
2517 | } | |
648f19f6 | 2518 | |
ea6021e8 MM |
2519 | /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. |
2520 | Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
2521 | BASE_CLASS, or NULL_TREE if an error occurred. The | |
aba649ba | 2522 | ACCESS_SPECIFIER is one of |
809e3e7f NS |
2523 | access_{default,public,protected_private}_node. For a virtual base |
2524 | we set TREE_TYPE. */ | |
ea6021e8 | 2525 | |
c8094d83 | 2526 | tree |
dbbf88d1 | 2527 | finish_base_specifier (tree base, tree access, bool virtual_p) |
ea6021e8 | 2528 | { |
ea6021e8 MM |
2529 | tree result; |
2530 | ||
dbbf88d1 | 2531 | if (base == error_mark_node) |
acb044ee GDR |
2532 | { |
2533 | error ("invalid base-class specification"); | |
2534 | result = NULL_TREE; | |
2535 | } | |
9e1e64ec PC |
2536 | else if (! MAYBE_CLASS_TYPE_P (base)) |
2537 | { | |
2538 | error ("%qT is not a class type", base); | |
2539 | result = NULL_TREE; | |
2540 | } | |
ea6021e8 | 2541 | else |
bb92901d | 2542 | { |
dbbf88d1 | 2543 | if (cp_type_quals (base) != 0) |
0cbd7506 MS |
2544 | { |
2545 | error ("base class %qT has cv qualifiers", base); | |
2546 | base = TYPE_MAIN_VARIANT (base); | |
2547 | } | |
dbbf88d1 | 2548 | result = build_tree_list (access, base); |
809e3e7f NS |
2549 | if (virtual_p) |
2550 | TREE_TYPE (result) = integer_type_node; | |
bb92901d | 2551 | } |
ea6021e8 MM |
2552 | |
2553 | return result; | |
2554 | } | |
61a127b3 | 2555 | |
8f78f01f | 2556 | /* Issue a diagnostic that NAME cannot be found in SCOPE. DECL is |
2b7a3abf DS |
2557 | what we found when we tried to do the lookup. |
2558 | LOCATION is the location of the NAME identifier; | |
2559 | The location is used in the error message*/ | |
22038b2c NS |
2560 | |
2561 | void | |
2b7a3abf DS |
2562 | qualified_name_lookup_error (tree scope, tree name, |
2563 | tree decl, location_t location) | |
22038b2c | 2564 | { |
1e1b4b37 VR |
2565 | if (scope == error_mark_node) |
2566 | ; /* We already complained. */ | |
2567 | else if (TYPE_P (scope)) | |
22038b2c NS |
2568 | { |
2569 | if (!COMPLETE_TYPE_P (scope)) | |
69bc6bff MLI |
2570 | error_at (location, "incomplete type %qT used in nested name specifier", |
2571 | scope); | |
8f78f01f MM |
2572 | else if (TREE_CODE (decl) == TREE_LIST) |
2573 | { | |
69bc6bff MLI |
2574 | error_at (location, "reference to %<%T::%D%> is ambiguous", |
2575 | scope, name); | |
8f78f01f MM |
2576 | print_candidates (decl); |
2577 | } | |
22038b2c | 2578 | else |
69bc6bff | 2579 | error_at (location, "%qD is not a member of %qT", name, scope); |
22038b2c NS |
2580 | } |
2581 | else if (scope != global_namespace) | |
69bc6bff | 2582 | error_at (location, "%qD is not a member of %qD", name, scope); |
22038b2c | 2583 | else |
69bc6bff | 2584 | error_at (location, "%<::%D%> has not been declared", name); |
22038b2c | 2585 | } |
c8094d83 | 2586 | |
eff3a276 MM |
2587 | /* If FNS is a member function, a set of member functions, or a |
2588 | template-id referring to one or more member functions, return a | |
2589 | BASELINK for FNS, incorporating the current access context. | |
2590 | Otherwise, return FNS unchanged. */ | |
2591 | ||
2592 | tree | |
2593 | baselink_for_fns (tree fns) | |
2594 | { | |
2595 | tree fn; | |
2596 | tree cl; | |
2597 | ||
2598 | if (BASELINK_P (fns) | |
eff3a276 MM |
2599 | || error_operand_p (fns)) |
2600 | return fns; | |
2601 | ||
2602 | fn = fns; | |
2603 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
2604 | fn = TREE_OPERAND (fn, 0); | |
2605 | fn = get_first_fn (fn); | |
2606 | if (!DECL_FUNCTION_MEMBER_P (fn)) | |
2607 | return fns; | |
2608 | ||
2609 | cl = currently_open_derived_class (DECL_CONTEXT (fn)); | |
2610 | if (!cl) | |
2611 | cl = DECL_CONTEXT (fn); | |
2612 | cl = TYPE_BINFO (cl); | |
2613 | return build_baselink (cl, cl, fns, /*optype=*/NULL_TREE); | |
2614 | } | |
2615 | ||
b3445994 MM |
2616 | /* ID_EXPRESSION is a representation of parsed, but unprocessed, |
2617 | id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
2618 | if non-NULL, is the type or namespace used to explicitly qualify | |
2619 | ID_EXPRESSION. DECL is the entity to which that name has been | |
c8094d83 | 2620 | resolved. |
b3445994 MM |
2621 | |
2622 | *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
2623 | constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
2624 | be set to true if this expression isn't permitted in a | |
2625 | constant-expression, but it is otherwise not set by this function. | |
2626 | *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
2627 | constant-expression, but a non-constant expression is also | |
2628 | permissible. | |
2629 | ||
02ed62dd MM |
2630 | DONE is true if this expression is a complete postfix-expression; |
2631 | it is false if this expression is followed by '->', '[', '(', etc. | |
2632 | ADDRESS_P is true iff this expression is the operand of '&'. | |
2633 | TEMPLATE_P is true iff the qualified-id was of the form | |
2634 | "A::template B". TEMPLATE_ARG_P is true iff this qualified name | |
2635 | appears as a template argument. | |
2636 | ||
b3445994 MM |
2637 | If an error occurs, and it is the kind of error that might cause |
2638 | the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
2639 | is the caller's responsibility to issue the message. *ERROR_MSG | |
2640 | will be a string with static storage duration, so the caller need | |
2641 | not "free" it. | |
2642 | ||
2643 | Return an expression for the entity, after issuing appropriate | |
2644 | diagnostics. This function is also responsible for transforming a | |
2645 | reference to a non-static member into a COMPONENT_REF that makes | |
c8094d83 | 2646 | the use of "this" explicit. |
b3445994 MM |
2647 | |
2648 | Upon return, *IDK will be filled in appropriately. */ | |
b3445994 | 2649 | tree |
c8094d83 | 2650 | finish_id_expression (tree id_expression, |
b3445994 MM |
2651 | tree decl, |
2652 | tree scope, | |
2653 | cp_id_kind *idk, | |
67c03833 JM |
2654 | bool integral_constant_expression_p, |
2655 | bool allow_non_integral_constant_expression_p, | |
2656 | bool *non_integral_constant_expression_p, | |
02ed62dd MM |
2657 | bool template_p, |
2658 | bool done, | |
2659 | bool address_p, | |
2660 | bool template_arg_p, | |
2b7a3abf DS |
2661 | const char **error_msg, |
2662 | location_t location) | |
b3445994 MM |
2663 | { |
2664 | /* Initialize the output parameters. */ | |
2665 | *idk = CP_ID_KIND_NONE; | |
2666 | *error_msg = NULL; | |
2667 | ||
2668 | if (id_expression == error_mark_node) | |
2669 | return error_mark_node; | |
2670 | /* If we have a template-id, then no further lookup is | |
2671 | required. If the template-id was for a template-class, we | |
2672 | will sometimes have a TYPE_DECL at this point. */ | |
2673 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
ee935db4 | 2674 | || TREE_CODE (decl) == TYPE_DECL) |
b3445994 MM |
2675 | ; |
2676 | /* Look up the name. */ | |
c8094d83 | 2677 | else |
b3445994 MM |
2678 | { |
2679 | if (decl == error_mark_node) | |
2680 | { | |
2681 | /* Name lookup failed. */ | |
c8094d83 MS |
2682 | if (scope |
2683 | && (!TYPE_P (scope) | |
4546865e MM |
2684 | || (!dependent_type_p (scope) |
2685 | && !(TREE_CODE (id_expression) == IDENTIFIER_NODE | |
2686 | && IDENTIFIER_TYPENAME_P (id_expression) | |
2687 | && dependent_type_p (TREE_TYPE (id_expression)))))) | |
b3445994 | 2688 | { |
4546865e MM |
2689 | /* If the qualifying type is non-dependent (and the name |
2690 | does not name a conversion operator to a dependent | |
2691 | type), issue an error. */ | |
2b7a3abf | 2692 | qualified_name_lookup_error (scope, id_expression, decl, location); |
b3445994 MM |
2693 | return error_mark_node; |
2694 | } | |
2695 | else if (!scope) | |
2696 | { | |
2697 | /* It may be resolved via Koenig lookup. */ | |
2698 | *idk = CP_ID_KIND_UNQUALIFIED; | |
2699 | return id_expression; | |
2700 | } | |
4546865e MM |
2701 | else |
2702 | decl = id_expression; | |
b3445994 MM |
2703 | } |
2704 | /* If DECL is a variable that would be out of scope under | |
2705 | ANSI/ISO rules, but in scope in the ARM, name lookup | |
2706 | will succeed. Issue a diagnostic here. */ | |
2707 | else | |
2708 | decl = check_for_out_of_scope_variable (decl); | |
2709 | ||
2710 | /* Remember that the name was used in the definition of | |
2711 | the current class so that we can check later to see if | |
2712 | the meaning would have been different after the class | |
2713 | was entirely defined. */ | |
2714 | if (!scope && decl != error_mark_node) | |
2715 | maybe_note_name_used_in_class (id_expression, decl); | |
8ca4bf25 MM |
2716 | |
2717 | /* Disallow uses of local variables from containing functions. */ | |
2718 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) | |
2719 | { | |
2720 | tree context = decl_function_context (decl); | |
2721 | if (context != NULL_TREE && context != current_function_decl | |
2722 | && ! TREE_STATIC (decl)) | |
2723 | { | |
2724 | error (TREE_CODE (decl) == VAR_DECL | |
2725 | ? "use of %<auto%> variable from containing function" | |
2726 | : "use of parameter from containing function"); | |
2727 | error (" %q+#D declared here", decl); | |
2728 | return error_mark_node; | |
2729 | } | |
2730 | } | |
b3445994 MM |
2731 | } |
2732 | ||
2733 | /* If we didn't find anything, or what we found was a type, | |
2734 | then this wasn't really an id-expression. */ | |
2735 | if (TREE_CODE (decl) == TEMPLATE_DECL | |
2736 | && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
2737 | { | |
2738 | *error_msg = "missing template arguments"; | |
2739 | return error_mark_node; | |
2740 | } | |
2741 | else if (TREE_CODE (decl) == TYPE_DECL | |
2742 | || TREE_CODE (decl) == NAMESPACE_DECL) | |
2743 | { | |
2744 | *error_msg = "expected primary-expression"; | |
2745 | return error_mark_node; | |
2746 | } | |
2747 | ||
2748 | /* If the name resolved to a template parameter, there is no | |
931a9c05 GB |
2749 | need to look it up again later. */ |
2750 | if ((TREE_CODE (decl) == CONST_DECL && DECL_TEMPLATE_PARM_P (decl)) | |
2751 | || TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
b3445994 | 2752 | { |
db24eb1f | 2753 | tree r; |
c8094d83 | 2754 | |
b3445994 | 2755 | *idk = CP_ID_KIND_NONE; |
931a9c05 GB |
2756 | if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX) |
2757 | decl = TEMPLATE_PARM_DECL (decl); | |
db24eb1f | 2758 | r = convert_from_reference (DECL_INITIAL (decl)); |
c8094d83 MS |
2759 | |
2760 | if (integral_constant_expression_p | |
68deab91 | 2761 | && !dependent_type_p (TREE_TYPE (decl)) |
db24eb1f | 2762 | && !(INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (r)))) |
931a9c05 | 2763 | { |
67c03833 | 2764 | if (!allow_non_integral_constant_expression_p) |
a82e1a7d | 2765 | error ("template parameter %qD of type %qT is not allowed in " |
931a9c05 GB |
2766 | "an integral constant expression because it is not of " |
2767 | "integral or enumeration type", decl, TREE_TYPE (decl)); | |
67c03833 | 2768 | *non_integral_constant_expression_p = true; |
931a9c05 | 2769 | } |
db24eb1f | 2770 | return r; |
931a9c05 | 2771 | } |
c8094d83 | 2772 | /* Similarly, we resolve enumeration constants to their |
931a9c05 GB |
2773 | underlying values. */ |
2774 | else if (TREE_CODE (decl) == CONST_DECL) | |
2775 | { | |
2776 | *idk = CP_ID_KIND_NONE; | |
2777 | if (!processing_template_decl) | |
6193b8b7 DJ |
2778 | { |
2779 | used_types_insert (TREE_TYPE (decl)); | |
2780 | return DECL_INITIAL (decl); | |
2781 | } | |
b3445994 MM |
2782 | return decl; |
2783 | } | |
2784 | else | |
2785 | { | |
2786 | bool dependent_p; | |
2787 | ||
2788 | /* If the declaration was explicitly qualified indicate | |
2789 | that. The semantics of `A::f(3)' are different than | |
2790 | `f(3)' if `f' is virtual. */ | |
c8094d83 | 2791 | *idk = (scope |
b3445994 MM |
2792 | ? CP_ID_KIND_QUALIFIED |
2793 | : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2794 | ? CP_ID_KIND_TEMPLATE_ID | |
2795 | : CP_ID_KIND_UNQUALIFIED)); | |
2796 | ||
2797 | ||
2798 | /* [temp.dep.expr] | |
2799 | ||
2800 | An id-expression is type-dependent if it contains an | |
2801 | identifier that was declared with a dependent type. | |
2802 | ||
b3445994 MM |
2803 | The standard is not very specific about an id-expression that |
2804 | names a set of overloaded functions. What if some of them | |
2805 | have dependent types and some of them do not? Presumably, | |
2806 | such a name should be treated as a dependent name. */ | |
2807 | /* Assume the name is not dependent. */ | |
2808 | dependent_p = false; | |
2809 | if (!processing_template_decl) | |
2810 | /* No names are dependent outside a template. */ | |
2811 | ; | |
2812 | /* A template-id where the name of the template was not resolved | |
2813 | is definitely dependent. */ | |
2814 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
c8094d83 | 2815 | && (TREE_CODE (TREE_OPERAND (decl, 0)) |
b3445994 MM |
2816 | == IDENTIFIER_NODE)) |
2817 | dependent_p = true; | |
2818 | /* For anything except an overloaded function, just check its | |
2819 | type. */ | |
2820 | else if (!is_overloaded_fn (decl)) | |
c8094d83 | 2821 | dependent_p |
b3445994 MM |
2822 | = dependent_type_p (TREE_TYPE (decl)); |
2823 | /* For a set of overloaded functions, check each of the | |
2824 | functions. */ | |
2825 | else | |
2826 | { | |
2827 | tree fns = decl; | |
2828 | ||
2829 | if (BASELINK_P (fns)) | |
2830 | fns = BASELINK_FUNCTIONS (fns); | |
2831 | ||
2832 | /* For a template-id, check to see if the template | |
2833 | arguments are dependent. */ | |
2834 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
2835 | { | |
2836 | tree args = TREE_OPERAND (fns, 1); | |
2837 | dependent_p = any_dependent_template_arguments_p (args); | |
2838 | /* The functions are those referred to by the | |
2839 | template-id. */ | |
2840 | fns = TREE_OPERAND (fns, 0); | |
2841 | } | |
2842 | ||
2843 | /* If there are no dependent template arguments, go through | |
cd0be382 | 2844 | the overloaded functions. */ |
b3445994 MM |
2845 | while (fns && !dependent_p) |
2846 | { | |
2847 | tree fn = OVL_CURRENT (fns); | |
2848 | ||
2849 | /* Member functions of dependent classes are | |
2850 | dependent. */ | |
2851 | if (TREE_CODE (fn) == FUNCTION_DECL | |
2852 | && type_dependent_expression_p (fn)) | |
2853 | dependent_p = true; | |
2854 | else if (TREE_CODE (fn) == TEMPLATE_DECL | |
2855 | && dependent_template_p (fn)) | |
2856 | dependent_p = true; | |
2857 | ||
2858 | fns = OVL_NEXT (fns); | |
2859 | } | |
2860 | } | |
2861 | ||
2862 | /* If the name was dependent on a template parameter, we will | |
2863 | resolve the name at instantiation time. */ | |
2864 | if (dependent_p) | |
2865 | { | |
2866 | /* Create a SCOPE_REF for qualified names, if the scope is | |
2867 | dependent. */ | |
2868 | if (scope) | |
2869 | { | |
02ed62dd MM |
2870 | if (TYPE_P (scope)) |
2871 | { | |
2872 | if (address_p && done) | |
2873 | decl = finish_qualified_id_expr (scope, decl, | |
2874 | done, address_p, | |
2875 | template_p, | |
2876 | template_arg_p); | |
7e361ae6 JM |
2877 | else |
2878 | { | |
2879 | tree type = NULL_TREE; | |
2880 | if (DECL_P (decl) && !dependent_scope_p (scope)) | |
2881 | type = TREE_TYPE (decl); | |
2882 | decl = build_qualified_name (type, | |
2883 | scope, | |
2884 | id_expression, | |
2885 | template_p); | |
2886 | } | |
02ed62dd MM |
2887 | } |
2888 | if (TREE_TYPE (decl)) | |
2889 | decl = convert_from_reference (decl); | |
2890 | return decl; | |
b3445994 MM |
2891 | } |
2892 | /* A TEMPLATE_ID already contains all the information we | |
2893 | need. */ | |
2894 | if (TREE_CODE (id_expression) == TEMPLATE_ID_EXPR) | |
2895 | return id_expression; | |
10b1d5e7 | 2896 | *idk = CP_ID_KIND_UNQUALIFIED_DEPENDENT; |
5a98fa7b MM |
2897 | /* If we found a variable, then name lookup during the |
2898 | instantiation will always resolve to the same VAR_DECL | |
2899 | (or an instantiation thereof). */ | |
3c398f34 MM |
2900 | if (TREE_CODE (decl) == VAR_DECL |
2901 | || TREE_CODE (decl) == PARM_DECL) | |
db24eb1f | 2902 | return convert_from_reference (decl); |
bad1f462 KL |
2903 | /* The same is true for FIELD_DECL, but we also need to |
2904 | make sure that the syntax is correct. */ | |
2905 | else if (TREE_CODE (decl) == FIELD_DECL) | |
a26ddf11 KL |
2906 | { |
2907 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2908 | Access checking has been performed during name lookup | |
2909 | already. Turn off checking to avoid duplicate errors. */ | |
2910 | push_deferring_access_checks (dk_no_check); | |
2911 | decl = finish_non_static_data_member | |
2912 | (decl, current_class_ref, | |
2913 | /*qualifying_scope=*/NULL_TREE); | |
2914 | pop_deferring_access_checks (); | |
2915 | return decl; | |
2916 | } | |
10b1d5e7 | 2917 | return id_expression; |
b3445994 MM |
2918 | } |
2919 | ||
2920 | /* Only certain kinds of names are allowed in constant | |
0cbd7506 MS |
2921 | expression. Enumerators and template parameters have already |
2922 | been handled above. */ | |
c30b4add | 2923 | if (integral_constant_expression_p |
100d337a MA |
2924 | && ! DECL_INTEGRAL_CONSTANT_VAR_P (decl) |
2925 | && ! builtin_valid_in_constant_expr_p (decl)) | |
b3445994 | 2926 | { |
c30b4add | 2927 | if (!allow_non_integral_constant_expression_p) |
b3445994 | 2928 | { |
a82e1a7d | 2929 | error ("%qD cannot appear in a constant-expression", decl); |
c30b4add | 2930 | return error_mark_node; |
b3445994 | 2931 | } |
c30b4add | 2932 | *non_integral_constant_expression_p = true; |
b3445994 | 2933 | } |
c8094d83 | 2934 | |
415d4636 | 2935 | if (TREE_CODE (decl) == NAMESPACE_DECL) |
9e95d15f | 2936 | { |
a82e1a7d | 2937 | error ("use of namespace %qD as expression", decl); |
9e95d15f NS |
2938 | return error_mark_node; |
2939 | } | |
2940 | else if (DECL_CLASS_TEMPLATE_P (decl)) | |
2941 | { | |
a82e1a7d | 2942 | error ("use of class template %qT as expression", decl); |
9e95d15f NS |
2943 | return error_mark_node; |
2944 | } | |
2945 | else if (TREE_CODE (decl) == TREE_LIST) | |
2946 | { | |
2947 | /* Ambiguous reference to base members. */ | |
a82e1a7d | 2948 | error ("request for member %qD is ambiguous in " |
9e95d15f NS |
2949 | "multiple inheritance lattice", id_expression); |
2950 | print_candidates (decl); | |
2951 | return error_mark_node; | |
2952 | } | |
415d4636 MM |
2953 | |
2954 | /* Mark variable-like entities as used. Functions are similarly | |
2955 | marked either below or after overload resolution. */ | |
2956 | if (TREE_CODE (decl) == VAR_DECL | |
2957 | || TREE_CODE (decl) == PARM_DECL | |
2958 | || TREE_CODE (decl) == RESULT_DECL) | |
2959 | mark_used (decl); | |
2960 | ||
2961 | if (scope) | |
2962 | { | |
c8094d83 | 2963 | decl = (adjust_result_of_qualified_name_lookup |
415d4636 | 2964 | (decl, scope, current_class_type)); |
e20bcc5e JH |
2965 | |
2966 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
2967 | mark_used (decl); | |
2968 | ||
415d4636 | 2969 | if (TREE_CODE (decl) == FIELD_DECL || BASELINK_P (decl)) |
02ed62dd MM |
2970 | decl = finish_qualified_id_expr (scope, |
2971 | decl, | |
2972 | done, | |
2973 | address_p, | |
2974 | template_p, | |
2975 | template_arg_p); | |
db24eb1f NS |
2976 | else |
2977 | { | |
2978 | tree r = convert_from_reference (decl); | |
c8094d83 | 2979 | |
02ed62dd MM |
2980 | if (processing_template_decl && TYPE_P (scope)) |
2981 | r = build_qualified_name (TREE_TYPE (r), | |
2982 | scope, decl, | |
2983 | template_p); | |
db24eb1f NS |
2984 | decl = r; |
2985 | } | |
415d4636 | 2986 | } |
9e95d15f | 2987 | else if (TREE_CODE (decl) == FIELD_DECL) |
a26ddf11 KL |
2988 | { |
2989 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2990 | Access checking has been performed during name lookup | |
2991 | already. Turn off checking to avoid duplicate errors. */ | |
2992 | push_deferring_access_checks (dk_no_check); | |
2993 | decl = finish_non_static_data_member (decl, current_class_ref, | |
2994 | /*qualifying_scope=*/NULL_TREE); | |
2995 | pop_deferring_access_checks (); | |
2996 | } | |
9e95d15f NS |
2997 | else if (is_overloaded_fn (decl)) |
2998 | { | |
eff3a276 | 2999 | tree first_fn; |
b3445994 | 3000 | |
eff3a276 MM |
3001 | first_fn = decl; |
3002 | if (TREE_CODE (first_fn) == TEMPLATE_ID_EXPR) | |
3003 | first_fn = TREE_OPERAND (first_fn, 0); | |
3004 | first_fn = get_first_fn (first_fn); | |
9e95d15f NS |
3005 | if (TREE_CODE (first_fn) == TEMPLATE_DECL) |
3006 | first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
415d4636 MM |
3007 | |
3008 | if (!really_overloaded_fn (decl)) | |
3009 | mark_used (first_fn); | |
3010 | ||
02ed62dd MM |
3011 | if (!template_arg_p |
3012 | && TREE_CODE (first_fn) == FUNCTION_DECL | |
821eaf2a MM |
3013 | && DECL_FUNCTION_MEMBER_P (first_fn) |
3014 | && !shared_member_p (decl)) | |
9e95d15f NS |
3015 | { |
3016 | /* A set of member functions. */ | |
3017 | decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
02ed62dd | 3018 | return finish_class_member_access_expr (decl, id_expression, |
5ade1ed2 DG |
3019 | /*template_p=*/false, |
3020 | tf_warning_or_error); | |
9e95d15f | 3021 | } |
eff3a276 MM |
3022 | |
3023 | decl = baselink_for_fns (decl); | |
9e95d15f NS |
3024 | } |
3025 | else | |
3026 | { | |
9e95d15f | 3027 | if (DECL_P (decl) && DECL_NONLOCAL (decl) |
24f58e74 | 3028 | && DECL_CLASS_SCOPE_P (decl)) |
9e95d15f | 3029 | { |
24f58e74 PC |
3030 | tree context = context_for_name_lookup (decl); |
3031 | if (context != current_class_type) | |
3032 | { | |
3033 | tree path = currently_open_derived_class (context); | |
3034 | perform_or_defer_access_check (TYPE_BINFO (path), | |
3035 | decl, decl); | |
3036 | } | |
9e95d15f | 3037 | } |
c8094d83 | 3038 | |
db24eb1f | 3039 | decl = convert_from_reference (decl); |
9e95d15f | 3040 | } |
b3445994 MM |
3041 | } |
3042 | ||
3043 | if (TREE_DEPRECATED (decl)) | |
9b86d6bb | 3044 | warn_deprecated_use (decl, NULL_TREE); |
b3445994 MM |
3045 | |
3046 | return decl; | |
3047 | } | |
3048 | ||
0213a355 JM |
3049 | /* Implement the __typeof keyword: Return the type of EXPR, suitable for |
3050 | use as a type-specifier. */ | |
3051 | ||
b894fc05 | 3052 | tree |
3a978d72 | 3053 | finish_typeof (tree expr) |
b894fc05 | 3054 | { |
65a5559b MM |
3055 | tree type; |
3056 | ||
dffbbe80 | 3057 | if (type_dependent_expression_p (expr)) |
b894fc05 | 3058 | { |
9e1e64ec | 3059 | type = cxx_make_type (TYPEOF_TYPE); |
eb34af89 | 3060 | TYPEOF_TYPE_EXPR (type) = expr; |
3ad6a8e1 | 3061 | SET_TYPE_STRUCTURAL_EQUALITY (type); |
b894fc05 | 3062 | |
65a5559b | 3063 | return type; |
b894fc05 JM |
3064 | } |
3065 | ||
3c38f0ff | 3066 | type = unlowered_expr_type (expr); |
65a5559b MM |
3067 | |
3068 | if (!type || type == unknown_type_node) | |
3069 | { | |
a82e1a7d | 3070 | error ("type of %qE is unknown", expr); |
65a5559b MM |
3071 | return error_mark_node; |
3072 | } | |
3073 | ||
3074 | return type; | |
b894fc05 | 3075 | } |
558475f0 | 3076 | |
c291f8b1 VR |
3077 | /* Perform C++-specific checks for __builtin_offsetof before calling |
3078 | fold_offsetof. */ | |
3079 | ||
3080 | tree | |
3081 | finish_offsetof (tree expr) | |
3082 | { | |
4c65a534 VR |
3083 | if (TREE_CODE (expr) == PSEUDO_DTOR_EXPR) |
3084 | { | |
3085 | error ("cannot apply %<offsetof%> to destructor %<~%T%>", | |
3086 | TREE_OPERAND (expr, 2)); | |
3087 | return error_mark_node; | |
3088 | } | |
c291f8b1 VR |
3089 | if (TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE |
3090 | || TREE_CODE (TREE_TYPE (expr)) == METHOD_TYPE | |
3091 | || TREE_CODE (TREE_TYPE (expr)) == UNKNOWN_TYPE) | |
3092 | { | |
1916c916 VR |
3093 | if (TREE_CODE (expr) == COMPONENT_REF |
3094 | || TREE_CODE (expr) == COMPOUND_EXPR) | |
0a9367cb VR |
3095 | expr = TREE_OPERAND (expr, 1); |
3096 | error ("cannot apply %<offsetof%> to member function %qD", expr); | |
c291f8b1 VR |
3097 | return error_mark_node; |
3098 | } | |
60c4d135 JJ |
3099 | if (TREE_CODE (expr) == INDIRECT_REF && REFERENCE_REF_P (expr)) |
3100 | expr = TREE_OPERAND (expr, 0); | |
6d4d7b0e | 3101 | return fold_offsetof (expr, NULL_TREE); |
c291f8b1 VR |
3102 | } |
3103 | ||
9eeb200f JM |
3104 | /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This |
3105 | function is broken out from the above for the benefit of the tree-ssa | |
3106 | project. */ | |
3107 | ||
3108 | void | |
3109 | simplify_aggr_init_expr (tree *tp) | |
3110 | { | |
3111 | tree aggr_init_expr = *tp; | |
3112 | ||
3eb24f73 | 3113 | /* Form an appropriate CALL_EXPR. */ |
5039610b SL |
3114 | tree fn = AGGR_INIT_EXPR_FN (aggr_init_expr); |
3115 | tree slot = AGGR_INIT_EXPR_SLOT (aggr_init_expr); | |
2692eb7d | 3116 | tree type = TREE_TYPE (slot); |
9eeb200f JM |
3117 | |
3118 | tree call_expr; | |
3119 | enum style_t { ctor, arg, pcc } style; | |
4977bab6 | 3120 | |
3eb24f73 | 3121 | if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) |
4977bab6 ZW |
3122 | style = ctor; |
3123 | #ifdef PCC_STATIC_STRUCT_RETURN | |
3124 | else if (1) | |
3125 | style = pcc; | |
3126 | #endif | |
4977bab6 | 3127 | else |
315fb5db NS |
3128 | { |
3129 | gcc_assert (TREE_ADDRESSABLE (type)); | |
3130 | style = arg; | |
3131 | } | |
4977bab6 | 3132 | |
db3927fb AH |
3133 | call_expr = build_call_array_loc (input_location, |
3134 | TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), | |
3135 | fn, | |
3136 | aggr_init_expr_nargs (aggr_init_expr), | |
3137 | AGGR_INIT_EXPR_ARGP (aggr_init_expr)); | |
5039610b | 3138 | |
fa47911c | 3139 | if (style == ctor) |
3eb24f73 | 3140 | { |
fa47911c JM |
3141 | /* Replace the first argument to the ctor with the address of the |
3142 | slot. */ | |
dffd7eb6 | 3143 | cxx_mark_addressable (slot); |
5039610b SL |
3144 | CALL_EXPR_ARG (call_expr, 0) = |
3145 | build1 (ADDR_EXPR, build_pointer_type (type), slot); | |
3eb24f73 | 3146 | } |
5039610b | 3147 | else if (style == arg) |
fa47911c JM |
3148 | { |
3149 | /* Just mark it addressable here, and leave the rest to | |
3150 | expand_call{,_inline}. */ | |
3151 | cxx_mark_addressable (slot); | |
3152 | CALL_EXPR_RETURN_SLOT_OPT (call_expr) = true; | |
3153 | call_expr = build2 (MODIFY_EXPR, TREE_TYPE (call_expr), slot, call_expr); | |
3154 | } | |
4977bab6 | 3155 | else if (style == pcc) |
3eb24f73 | 3156 | { |
4977bab6 ZW |
3157 | /* If we're using the non-reentrant PCC calling convention, then we |
3158 | need to copy the returned value out of the static buffer into the | |
3159 | SLOT. */ | |
78757caa | 3160 | push_deferring_access_checks (dk_no_check); |
46af705a | 3161 | call_expr = build_aggr_init (slot, call_expr, |
5ade1ed2 DG |
3162 | DIRECT_BIND | LOOKUP_ONLYCONVERTING, |
3163 | tf_warning_or_error); | |
78757caa | 3164 | pop_deferring_access_checks (); |
d17791d6 | 3165 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (slot), call_expr, slot); |
3eb24f73 | 3166 | } |
3eb24f73 | 3167 | |
450a927a JM |
3168 | if (AGGR_INIT_ZERO_FIRST (aggr_init_expr)) |
3169 | { | |
3170 | tree init = build_zero_init (type, NULL_TREE, | |
3171 | /*static_storage_p=*/false); | |
3172 | init = build2 (INIT_EXPR, void_type_node, slot, init); | |
3173 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (call_expr), | |
3174 | init, call_expr); | |
3175 | } | |
3176 | ||
3eb24f73 | 3177 | *tp = call_expr; |
3eb24f73 MM |
3178 | } |
3179 | ||
31f8e4f3 MM |
3180 | /* Emit all thunks to FN that should be emitted when FN is emitted. */ |
3181 | ||
e89d6010 | 3182 | void |
3a978d72 | 3183 | emit_associated_thunks (tree fn) |
31f8e4f3 MM |
3184 | { |
3185 | /* When we use vcall offsets, we emit thunks with the virtual | |
3186 | functions to which they thunk. The whole point of vcall offsets | |
3187 | is so that you can know statically the entire set of thunks that | |
3188 | will ever be needed for a given virtual function, thereby | |
3189 | enabling you to output all the thunks with the function itself. */ | |
4537ec0c DN |
3190 | if (DECL_VIRTUAL_P (fn) |
3191 | /* Do not emit thunks for extern template instantiations. */ | |
3192 | && ! DECL_REALLY_EXTERN (fn)) | |
31f8e4f3 | 3193 | { |
bb5e8a7f | 3194 | tree thunk; |
c8094d83 | 3195 | |
bb5e8a7f | 3196 | for (thunk = DECL_THUNKS (fn); thunk; thunk = TREE_CHAIN (thunk)) |
4977bab6 | 3197 | { |
e00853fd | 3198 | if (!THUNK_ALIAS (thunk)) |
4977bab6 | 3199 | { |
bb885938 NS |
3200 | use_thunk (thunk, /*emit_p=*/1); |
3201 | if (DECL_RESULT_THUNK_P (thunk)) | |
3202 | { | |
3203 | tree probe; | |
c8094d83 | 3204 | |
bb885938 NS |
3205 | for (probe = DECL_THUNKS (thunk); |
3206 | probe; probe = TREE_CHAIN (probe)) | |
3207 | use_thunk (probe, /*emit_p=*/1); | |
3208 | } | |
4977bab6 | 3209 | } |
bb885938 | 3210 | else |
50bc768d | 3211 | gcc_assert (!DECL_THUNKS (thunk)); |
4977bab6 | 3212 | } |
31f8e4f3 MM |
3213 | } |
3214 | } | |
3215 | ||
558475f0 MM |
3216 | /* Generate RTL for FN. */ |
3217 | ||
8cd2462c | 3218 | void |
5671bf27 | 3219 | expand_or_defer_fn (tree fn) |
8cd2462c JH |
3220 | { |
3221 | /* When the parser calls us after finishing the body of a template | |
c353b8e3 MM |
3222 | function, we don't really want to expand the body. */ |
3223 | if (processing_template_decl) | |
8cd2462c JH |
3224 | { |
3225 | /* Normally, collection only occurs in rest_of_compilation. So, | |
3226 | if we don't collect here, we never collect junk generated | |
3227 | during the processing of templates until we hit a | |
27250734 MM |
3228 | non-template function. It's not safe to do this inside a |
3229 | nested class, though, as the parser may have local state that | |
3230 | is not a GC root. */ | |
3231 | if (!function_depth) | |
3232 | ggc_collect (); | |
8cd2462c JH |
3233 | return; |
3234 | } | |
3235 | ||
a406865a | 3236 | gcc_assert (DECL_SAVED_TREE (fn)); |
726a989a | 3237 | |
8cd2462c JH |
3238 | /* If this is a constructor or destructor body, we have to clone |
3239 | it. */ | |
3240 | if (maybe_clone_body (fn)) | |
3241 | { | |
3242 | /* We don't want to process FN again, so pretend we've written | |
3243 | it out, even though we haven't. */ | |
3244 | TREE_ASM_WRITTEN (fn) = 1; | |
c6a21142 | 3245 | DECL_SAVED_TREE (fn) = NULL_TREE; |
8cd2462c JH |
3246 | return; |
3247 | } | |
3248 | ||
4684cd27 MM |
3249 | /* We make a decision about linkage for these functions at the end |
3250 | of the compilation. Until that point, we do not want the back | |
3251 | end to output them -- but we do want it to see the bodies of | |
1a10290c | 3252 | these functions so that it can inline them as appropriate. */ |
4684cd27 MM |
3253 | if (DECL_DECLARED_INLINE_P (fn) || DECL_IMPLICIT_INSTANTIATION (fn)) |
3254 | { | |
1ef0df47 MM |
3255 | if (DECL_INTERFACE_KNOWN (fn)) |
3256 | /* We've already made a decision as to how this function will | |
3257 | be handled. */; | |
3258 | else if (!at_eof) | |
4684cd27 MM |
3259 | { |
3260 | DECL_EXTERNAL (fn) = 1; | |
3261 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
3262 | note_vague_linkage_fn (fn); | |
1ef0df47 MM |
3263 | /* A non-template inline function with external linkage will |
3264 | always be COMDAT. As we must eventually determine the | |
3265 | linkage of all functions, and as that causes writes to | |
3266 | the data mapped in from the PCH file, it's advantageous | |
3267 | to mark the functions at this point. */ | |
3268 | if (!DECL_IMPLICIT_INSTANTIATION (fn)) | |
3269 | { | |
3270 | /* This function must have external linkage, as | |
3271 | otherwise DECL_INTERFACE_KNOWN would have been | |
3272 | set. */ | |
3273 | gcc_assert (TREE_PUBLIC (fn)); | |
3274 | comdat_linkage (fn); | |
3275 | DECL_INTERFACE_KNOWN (fn) = 1; | |
3276 | } | |
4684cd27 MM |
3277 | } |
3278 | else | |
3279 | import_export_decl (fn); | |
1a10290c MM |
3280 | |
3281 | /* If the user wants us to keep all inline functions, then mark | |
3282 | this function as needed so that finish_file will make sure to | |
fe2978fb MM |
3283 | output it later. Similarly, all dllexport'd functions must |
3284 | be emitted; there may be callers in other DLLs. */ | |
3285 | if ((flag_keep_inline_functions && DECL_DECLARED_INLINE_P (fn)) | |
3286 | || lookup_attribute ("dllexport", DECL_ATTRIBUTES (fn))) | |
1a10290c | 3287 | mark_needed (fn); |
4684cd27 MM |
3288 | } |
3289 | ||
8cd2462c JH |
3290 | /* There's no reason to do any of the work here if we're only doing |
3291 | semantic analysis; this code just generates RTL. */ | |
3292 | if (flag_syntax_only) | |
3293 | return; | |
3294 | ||
99edd65d RH |
3295 | function_depth++; |
3296 | ||
e4d91027 | 3297 | /* Expand or defer, at the whim of the compilation unit manager. */ |
6b00c969 | 3298 | cgraph_finalize_function (fn, function_depth > 1); |
99edd65d RH |
3299 | |
3300 | function_depth--; | |
8cd2462c JH |
3301 | } |
3302 | ||
6de9cd9a DN |
3303 | struct nrv_data |
3304 | { | |
3305 | tree var; | |
3306 | tree result; | |
3307 | htab_t visited; | |
3308 | }; | |
0d97bf4c | 3309 | |
6de9cd9a DN |
3310 | /* Helper function for walk_tree, used by finalize_nrv below. */ |
3311 | ||
3312 | static tree | |
3313 | finalize_nrv_r (tree* tp, int* walk_subtrees, void* data) | |
0d97bf4c | 3314 | { |
6de9cd9a DN |
3315 | struct nrv_data *dp = (struct nrv_data *)data; |
3316 | void **slot; | |
07b2f2fd JM |
3317 | |
3318 | /* No need to walk into types. There wouldn't be any need to walk into | |
3319 | non-statements, except that we have to consider STMT_EXPRs. */ | |
0d97bf4c JM |
3320 | if (TYPE_P (*tp)) |
3321 | *walk_subtrees = 0; | |
6de9cd9a DN |
3322 | /* Change all returns to just refer to the RESULT_DECL; this is a nop, |
3323 | but differs from using NULL_TREE in that it indicates that we care | |
3324 | about the value of the RESULT_DECL. */ | |
5088b058 RH |
3325 | else if (TREE_CODE (*tp) == RETURN_EXPR) |
3326 | TREE_OPERAND (*tp, 0) = dp->result; | |
6de9cd9a DN |
3327 | /* Change all cleanups for the NRV to only run when an exception is |
3328 | thrown. */ | |
07b2f2fd | 3329 | else if (TREE_CODE (*tp) == CLEANUP_STMT |
6de9cd9a | 3330 | && CLEANUP_DECL (*tp) == dp->var) |
659e5a7a | 3331 | CLEANUP_EH_ONLY (*tp) = 1; |
350fae66 | 3332 | /* Replace the DECL_EXPR for the NRV with an initialization of the |
6de9cd9a | 3333 | RESULT_DECL, if needed. */ |
350fae66 RK |
3334 | else if (TREE_CODE (*tp) == DECL_EXPR |
3335 | && DECL_EXPR_DECL (*tp) == dp->var) | |
6de9cd9a DN |
3336 | { |
3337 | tree init; | |
3338 | if (DECL_INITIAL (dp->var) | |
3339 | && DECL_INITIAL (dp->var) != error_mark_node) | |
2d188530 JJ |
3340 | init = build2 (INIT_EXPR, void_type_node, dp->result, |
3341 | DECL_INITIAL (dp->var)); | |
6de9cd9a | 3342 | else |
c2255bc4 | 3343 | init = build_empty_stmt (EXPR_LOCATION (*tp)); |
2d188530 | 3344 | DECL_INITIAL (dp->var) = NULL_TREE; |
5e278028 | 3345 | SET_EXPR_LOCATION (init, EXPR_LOCATION (*tp)); |
6de9cd9a DN |
3346 | *tp = init; |
3347 | } | |
3348 | /* And replace all uses of the NRV with the RESULT_DECL. */ | |
3349 | else if (*tp == dp->var) | |
3350 | *tp = dp->result; | |
3351 | ||
3352 | /* Avoid walking into the same tree more than once. Unfortunately, we | |
3353 | can't just use walk_tree_without duplicates because it would only call | |
3354 | us for the first occurrence of dp->var in the function body. */ | |
3355 | slot = htab_find_slot (dp->visited, *tp, INSERT); | |
3356 | if (*slot) | |
3357 | *walk_subtrees = 0; | |
3358 | else | |
3359 | *slot = *tp; | |
0d97bf4c JM |
3360 | |
3361 | /* Keep iterating. */ | |
3362 | return NULL_TREE; | |
3363 | } | |
3364 | ||
6de9cd9a | 3365 | /* Called from finish_function to implement the named return value |
5088b058 | 3366 | optimization by overriding all the RETURN_EXPRs and pertinent |
6de9cd9a DN |
3367 | CLEANUP_STMTs and replacing all occurrences of VAR with RESULT, the |
3368 | RESULT_DECL for the function. */ | |
f444e36b | 3369 | |
4985cde3 | 3370 | void |
6de9cd9a | 3371 | finalize_nrv (tree *tp, tree var, tree result) |
f444e36b | 3372 | { |
6de9cd9a DN |
3373 | struct nrv_data data; |
3374 | ||
3375 | /* Copy debugging information from VAR to RESULT. */ | |
3376 | DECL_NAME (result) = DECL_NAME (var); | |
b785f485 RH |
3377 | DECL_ARTIFICIAL (result) = DECL_ARTIFICIAL (var); |
3378 | DECL_IGNORED_P (result) = DECL_IGNORED_P (var); | |
6de9cd9a DN |
3379 | DECL_SOURCE_LOCATION (result) = DECL_SOURCE_LOCATION (var); |
3380 | DECL_ABSTRACT_ORIGIN (result) = DECL_ABSTRACT_ORIGIN (var); | |
3381 | /* Don't forget that we take its address. */ | |
3382 | TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (var); | |
3383 | ||
3384 | data.var = var; | |
3385 | data.result = result; | |
3386 | data.visited = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
14588106 | 3387 | cp_walk_tree (tp, finalize_nrv_r, &data, 0); |
6de9cd9a | 3388 | htab_delete (data.visited); |
b850de4f | 3389 | } |
1799e5d5 | 3390 | \f |
7a0112e7 JJ |
3391 | /* Return the declaration for the function called by CALL_EXPR T, |
3392 | TYPE is the class type of the clause decl. */ | |
3393 | ||
3394 | static tree | |
3395 | omp_clause_info_fndecl (tree t, tree type) | |
3396 | { | |
3397 | tree ret = get_callee_fndecl (t); | |
3398 | ||
3399 | if (ret) | |
3400 | return ret; | |
3401 | ||
3402 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
3403 | t = CALL_EXPR_FN (t); | |
3404 | STRIP_NOPS (t); | |
3405 | if (TREE_CODE (t) == OBJ_TYPE_REF) | |
3406 | { | |
3407 | t = cp_fold_obj_type_ref (t, type); | |
3408 | if (TREE_CODE (t) == ADDR_EXPR | |
3409 | && TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL) | |
3410 | return TREE_OPERAND (t, 0); | |
3411 | } | |
3412 | ||
3413 | return NULL_TREE; | |
3414 | } | |
3415 | ||
a68ab351 JJ |
3416 | /* Create CP_OMP_CLAUSE_INFO for clause C. Returns true if it is invalid. */ |
3417 | ||
3418 | bool | |
3419 | cxx_omp_create_clause_info (tree c, tree type, bool need_default_ctor, | |
3420 | bool need_copy_ctor, bool need_copy_assignment) | |
3421 | { | |
3422 | int save_errorcount = errorcount; | |
3423 | tree info, t; | |
3424 | ||
3425 | /* Always allocate 3 elements for simplicity. These are the | |
3426 | function decls for the ctor, dtor, and assignment op. | |
3427 | This layout is known to the three lang hooks, | |
3428 | cxx_omp_clause_default_init, cxx_omp_clause_copy_init, | |
3429 | and cxx_omp_clause_assign_op. */ | |
3430 | info = make_tree_vec (3); | |
3431 | CP_OMP_CLAUSE_INFO (c) = info; | |
3432 | ||
3433 | if (need_default_ctor | |
3434 | || (need_copy_ctor && !TYPE_HAS_TRIVIAL_INIT_REF (type))) | |
3435 | { | |
c166b898 ILT |
3436 | VEC(tree,gc) *vec; |
3437 | ||
a68ab351 | 3438 | if (need_default_ctor) |
c166b898 | 3439 | vec = NULL; |
a68ab351 JJ |
3440 | else |
3441 | { | |
3442 | t = build_int_cst (build_pointer_type (type), 0); | |
3443 | t = build1 (INDIRECT_REF, type, t); | |
c166b898 | 3444 | vec = make_tree_vector_single (t); |
a68ab351 JJ |
3445 | } |
3446 | t = build_special_member_call (NULL_TREE, complete_ctor_identifier, | |
c166b898 | 3447 | &vec, type, LOOKUP_NORMAL, |
a68ab351 JJ |
3448 | tf_warning_or_error); |
3449 | ||
c166b898 ILT |
3450 | if (vec != NULL) |
3451 | release_tree_vector (vec); | |
3452 | ||
a68ab351 JJ |
3453 | if (targetm.cxx.cdtor_returns_this () || errorcount) |
3454 | /* Because constructors and destructors return this, | |
3455 | the call will have been cast to "void". Remove the | |
3456 | cast here. We would like to use STRIP_NOPS, but it | |
3457 | wouldn't work here because TYPE_MODE (t) and | |
3458 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3459 | They are VOIDmode and Pmode, respectively. */ | |
3460 | if (TREE_CODE (t) == NOP_EXPR) | |
3461 | t = TREE_OPERAND (t, 0); | |
3462 | ||
3463 | TREE_VEC_ELT (info, 0) = get_callee_fndecl (t); | |
3464 | } | |
3465 | ||
3466 | if ((need_default_ctor || need_copy_ctor) | |
3467 | && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) | |
3468 | { | |
3469 | t = build_int_cst (build_pointer_type (type), 0); | |
3470 | t = build1 (INDIRECT_REF, type, t); | |
3471 | t = build_special_member_call (t, complete_dtor_identifier, | |
3472 | NULL, type, LOOKUP_NORMAL, | |
3473 | tf_warning_or_error); | |
3474 | ||
3475 | if (targetm.cxx.cdtor_returns_this () || errorcount) | |
3476 | /* Because constructors and destructors return this, | |
3477 | the call will have been cast to "void". Remove the | |
3478 | cast here. We would like to use STRIP_NOPS, but it | |
3479 | wouldn't work here because TYPE_MODE (t) and | |
3480 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3481 | They are VOIDmode and Pmode, respectively. */ | |
3482 | if (TREE_CODE (t) == NOP_EXPR) | |
3483 | t = TREE_OPERAND (t, 0); | |
3484 | ||
3485 | TREE_VEC_ELT (info, 1) = omp_clause_info_fndecl (t, type); | |
3486 | } | |
3487 | ||
3488 | if (need_copy_assignment && !TYPE_HAS_TRIVIAL_ASSIGN_REF (type)) | |
3489 | { | |
c166b898 ILT |
3490 | VEC(tree,gc) *vec; |
3491 | ||
a68ab351 JJ |
3492 | t = build_int_cst (build_pointer_type (type), 0); |
3493 | t = build1 (INDIRECT_REF, type, t); | |
c166b898 | 3494 | vec = make_tree_vector_single (t); |
a68ab351 | 3495 | t = build_special_member_call (t, ansi_assopname (NOP_EXPR), |
c166b898 | 3496 | &vec, type, LOOKUP_NORMAL, |
a68ab351 | 3497 | tf_warning_or_error); |
c166b898 | 3498 | release_tree_vector (vec); |
a68ab351 JJ |
3499 | |
3500 | /* We'll have called convert_from_reference on the call, which | |
3501 | may well have added an indirect_ref. It's unneeded here, | |
3502 | and in the way, so kill it. */ | |
3503 | if (TREE_CODE (t) == INDIRECT_REF) | |
3504 | t = TREE_OPERAND (t, 0); | |
3505 | ||
3506 | TREE_VEC_ELT (info, 2) = omp_clause_info_fndecl (t, type); | |
3507 | } | |
3508 | ||
3509 | return errorcount != save_errorcount; | |
3510 | } | |
3511 | ||
1799e5d5 RH |
3512 | /* For all elements of CLAUSES, validate them vs OpenMP constraints. |
3513 | Remove any elements from the list that are invalid. */ | |
3514 | ||
3515 | tree | |
3516 | finish_omp_clauses (tree clauses) | |
3517 | { | |
3518 | bitmap_head generic_head, firstprivate_head, lastprivate_head; | |
3519 | tree c, t, *pc = &clauses; | |
3520 | const char *name; | |
3521 | ||
3522 | bitmap_obstack_initialize (NULL); | |
3523 | bitmap_initialize (&generic_head, &bitmap_default_obstack); | |
3524 | bitmap_initialize (&firstprivate_head, &bitmap_default_obstack); | |
3525 | bitmap_initialize (&lastprivate_head, &bitmap_default_obstack); | |
3526 | ||
3527 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3528 | { | |
3529 | bool remove = false; | |
3530 | ||
3531 | switch (OMP_CLAUSE_CODE (c)) | |
3532 | { | |
3533 | case OMP_CLAUSE_SHARED: | |
3534 | name = "shared"; | |
3535 | goto check_dup_generic; | |
3536 | case OMP_CLAUSE_PRIVATE: | |
3537 | name = "private"; | |
3538 | goto check_dup_generic; | |
3539 | case OMP_CLAUSE_REDUCTION: | |
3540 | name = "reduction"; | |
3541 | goto check_dup_generic; | |
3542 | case OMP_CLAUSE_COPYPRIVATE: | |
3543 | name = "copyprivate"; | |
3544 | goto check_dup_generic; | |
3545 | case OMP_CLAUSE_COPYIN: | |
3546 | name = "copyin"; | |
3547 | goto check_dup_generic; | |
3548 | check_dup_generic: | |
3549 | t = OMP_CLAUSE_DECL (c); | |
3550 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3551 | { | |
3552 | if (processing_template_decl) | |
3553 | break; | |
76dc15d4 JJ |
3554 | if (DECL_P (t)) |
3555 | error ("%qD is not a variable in clause %qs", t, name); | |
3556 | else | |
3557 | error ("%qE is not a variable in clause %qs", t, name); | |
1799e5d5 RH |
3558 | remove = true; |
3559 | } | |
3560 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3561 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t)) | |
3562 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3563 | { | |
76dc15d4 | 3564 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3565 | remove = true; |
3566 | } | |
3567 | else | |
3568 | bitmap_set_bit (&generic_head, DECL_UID (t)); | |
3569 | break; | |
3570 | ||
3571 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3572 | t = OMP_CLAUSE_DECL (c); | |
3573 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3574 | { | |
3575 | if (processing_template_decl) | |
3576 | break; | |
85b20612 JJ |
3577 | if (DECL_P (t)) |
3578 | error ("%qD is not a variable in clause %<firstprivate%>", t); | |
3579 | else | |
3580 | error ("%qE is not a variable in clause %<firstprivate%>", t); | |
1799e5d5 RH |
3581 | remove = true; |
3582 | } | |
3583 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3584 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3585 | { | |
85b20612 | 3586 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3587 | remove = true; |
3588 | } | |
3589 | else | |
3590 | bitmap_set_bit (&firstprivate_head, DECL_UID (t)); | |
3591 | break; | |
3592 | ||
3593 | case OMP_CLAUSE_LASTPRIVATE: | |
3594 | t = OMP_CLAUSE_DECL (c); | |
3595 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3596 | { | |
3597 | if (processing_template_decl) | |
3598 | break; | |
85b20612 JJ |
3599 | if (DECL_P (t)) |
3600 | error ("%qD is not a variable in clause %<lastprivate%>", t); | |
3601 | else | |
3602 | error ("%qE is not a variable in clause %<lastprivate%>", t); | |
1799e5d5 RH |
3603 | remove = true; |
3604 | } | |
3605 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3606 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3607 | { | |
85b20612 | 3608 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3609 | remove = true; |
3610 | } | |
3611 | else | |
3612 | bitmap_set_bit (&lastprivate_head, DECL_UID (t)); | |
3613 | break; | |
3614 | ||
3615 | case OMP_CLAUSE_IF: | |
3616 | t = OMP_CLAUSE_IF_EXPR (c); | |
3617 | t = maybe_convert_cond (t); | |
3618 | if (t == error_mark_node) | |
3619 | remove = true; | |
3620 | OMP_CLAUSE_IF_EXPR (c) = t; | |
3621 | break; | |
3622 | ||
3623 | case OMP_CLAUSE_NUM_THREADS: | |
3624 | t = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
3625 | if (t == error_mark_node) | |
3626 | remove = true; | |
6e684eee JJ |
3627 | else if (!type_dependent_expression_p (t) |
3628 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3629 | { |
3630 | error ("num_threads expression must be integral"); | |
3631 | remove = true; | |
3632 | } | |
3633 | break; | |
3634 | ||
3635 | case OMP_CLAUSE_SCHEDULE: | |
3636 | t = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c); | |
3637 | if (t == NULL) | |
3638 | ; | |
3639 | else if (t == error_mark_node) | |
3640 | remove = true; | |
6e684eee JJ |
3641 | else if (!type_dependent_expression_p (t) |
3642 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3643 | { |
3644 | error ("schedule chunk size expression must be integral"); | |
3645 | remove = true; | |
3646 | } | |
3647 | break; | |
3648 | ||
3649 | case OMP_CLAUSE_NOWAIT: | |
3650 | case OMP_CLAUSE_ORDERED: | |
3651 | case OMP_CLAUSE_DEFAULT: | |
a68ab351 JJ |
3652 | case OMP_CLAUSE_UNTIED: |
3653 | case OMP_CLAUSE_COLLAPSE: | |
1799e5d5 RH |
3654 | break; |
3655 | ||
3656 | default: | |
3657 | gcc_unreachable (); | |
3658 | } | |
3659 | ||
3660 | if (remove) | |
3661 | *pc = OMP_CLAUSE_CHAIN (c); | |
3662 | else | |
3663 | pc = &OMP_CLAUSE_CHAIN (c); | |
3664 | } | |
3665 | ||
3666 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3667 | { | |
81f40b79 | 3668 | enum omp_clause_code c_kind = OMP_CLAUSE_CODE (c); |
1799e5d5 RH |
3669 | bool remove = false; |
3670 | bool need_complete_non_reference = false; | |
3671 | bool need_default_ctor = false; | |
3672 | bool need_copy_ctor = false; | |
3673 | bool need_copy_assignment = false; | |
3674 | bool need_implicitly_determined = false; | |
3675 | tree type, inner_type; | |
3676 | ||
3677 | switch (c_kind) | |
3678 | { | |
3679 | case OMP_CLAUSE_SHARED: | |
3680 | name = "shared"; | |
3681 | need_implicitly_determined = true; | |
3682 | break; | |
3683 | case OMP_CLAUSE_PRIVATE: | |
3684 | name = "private"; | |
3685 | need_complete_non_reference = true; | |
3686 | need_default_ctor = true; | |
3687 | need_implicitly_determined = true; | |
3688 | break; | |
3689 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3690 | name = "firstprivate"; | |
3691 | need_complete_non_reference = true; | |
3692 | need_copy_ctor = true; | |
3693 | need_implicitly_determined = true; | |
3694 | break; | |
3695 | case OMP_CLAUSE_LASTPRIVATE: | |
3696 | name = "lastprivate"; | |
3697 | need_complete_non_reference = true; | |
3698 | need_copy_assignment = true; | |
3699 | need_implicitly_determined = true; | |
3700 | break; | |
3701 | case OMP_CLAUSE_REDUCTION: | |
3702 | name = "reduction"; | |
3703 | need_implicitly_determined = true; | |
3704 | break; | |
3705 | case OMP_CLAUSE_COPYPRIVATE: | |
3706 | name = "copyprivate"; | |
3707 | need_copy_assignment = true; | |
3708 | break; | |
3709 | case OMP_CLAUSE_COPYIN: | |
3710 | name = "copyin"; | |
3711 | need_copy_assignment = true; | |
3712 | break; | |
3713 | default: | |
3714 | pc = &OMP_CLAUSE_CHAIN (c); | |
3715 | continue; | |
3716 | } | |
3717 | ||
3718 | t = OMP_CLAUSE_DECL (c); | |
3719 | if (processing_template_decl | |
3720 | && TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3721 | { | |
3722 | pc = &OMP_CLAUSE_CHAIN (c); | |
3723 | continue; | |
3724 | } | |
3725 | ||
3726 | switch (c_kind) | |
3727 | { | |
3728 | case OMP_CLAUSE_LASTPRIVATE: | |
3729 | if (!bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3730 | need_default_ctor = true; | |
3731 | break; | |
3732 | ||
3733 | case OMP_CLAUSE_REDUCTION: | |
3734 | if (AGGREGATE_TYPE_P (TREE_TYPE (t)) | |
3735 | || POINTER_TYPE_P (TREE_TYPE (t))) | |
3736 | { | |
3737 | error ("%qE has invalid type for %<reduction%>", t); | |
3738 | remove = true; | |
3739 | } | |
3740 | else if (FLOAT_TYPE_P (TREE_TYPE (t))) | |
3741 | { | |
3742 | enum tree_code r_code = OMP_CLAUSE_REDUCTION_CODE (c); | |
3743 | switch (r_code) | |
3744 | { | |
3745 | case PLUS_EXPR: | |
3746 | case MULT_EXPR: | |
3747 | case MINUS_EXPR: | |
3748 | break; | |
3749 | default: | |
3750 | error ("%qE has invalid type for %<reduction(%s)%>", | |
3751 | t, operator_name_info[r_code].name); | |
3752 | remove = true; | |
3753 | } | |
3754 | } | |
3755 | break; | |
3756 | ||
3757 | case OMP_CLAUSE_COPYIN: | |
3758 | if (TREE_CODE (t) != VAR_DECL || !DECL_THREAD_LOCAL_P (t)) | |
3759 | { | |
3760 | error ("%qE must be %<threadprivate%> for %<copyin%>", t); | |
3761 | remove = true; | |
3762 | } | |
3763 | break; | |
3764 | ||
3765 | default: | |
3766 | break; | |
3767 | } | |
3768 | ||
3769 | if (need_complete_non_reference) | |
3770 | { | |
3771 | t = require_complete_type (t); | |
3772 | if (t == error_mark_node) | |
3773 | remove = true; | |
3774 | else if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE) | |
3775 | { | |
3776 | error ("%qE has reference type for %qs", t, name); | |
3777 | remove = true; | |
3778 | } | |
3779 | } | |
3780 | if (need_implicitly_determined) | |
3781 | { | |
3782 | const char *share_name = NULL; | |
3783 | ||
3784 | if (TREE_CODE (t) == VAR_DECL && DECL_THREAD_LOCAL_P (t)) | |
3785 | share_name = "threadprivate"; | |
3786 | else switch (cxx_omp_predetermined_sharing (t)) | |
3787 | { | |
3788 | case OMP_CLAUSE_DEFAULT_UNSPECIFIED: | |
3789 | break; | |
3790 | case OMP_CLAUSE_DEFAULT_SHARED: | |
3791 | share_name = "shared"; | |
3792 | break; | |
3793 | case OMP_CLAUSE_DEFAULT_PRIVATE: | |
3794 | share_name = "private"; | |
3795 | break; | |
3796 | default: | |
3797 | gcc_unreachable (); | |
3798 | } | |
3799 | if (share_name) | |
3800 | { | |
3801 | error ("%qE is predetermined %qs for %qs", | |
3802 | t, share_name, name); | |
3803 | remove = true; | |
3804 | } | |
3805 | } | |
3806 | ||
3807 | /* We're interested in the base element, not arrays. */ | |
3808 | inner_type = type = TREE_TYPE (t); | |
3809 | while (TREE_CODE (inner_type) == ARRAY_TYPE) | |
3810 | inner_type = TREE_TYPE (inner_type); | |
3811 | ||
84dc00e8 | 3812 | /* Check for special function availability by building a call to one. |
1799e5d5 RH |
3813 | Save the results, because later we won't be in the right context |
3814 | for making these queries. */ | |
3815 | if (CLASS_TYPE_P (inner_type) | |
6f719560 | 3816 | && (need_default_ctor || need_copy_ctor || need_copy_assignment) |
a68ab351 JJ |
3817 | && !type_dependent_expression_p (t) |
3818 | && cxx_omp_create_clause_info (c, inner_type, need_default_ctor, | |
3819 | need_copy_ctor, need_copy_assignment)) | |
3820 | remove = true; | |
1799e5d5 RH |
3821 | |
3822 | if (remove) | |
3823 | *pc = OMP_CLAUSE_CHAIN (c); | |
3824 | else | |
3825 | pc = &OMP_CLAUSE_CHAIN (c); | |
3826 | } | |
3827 | ||
3828 | bitmap_obstack_release (NULL); | |
3829 | return clauses; | |
3830 | } | |
3831 | ||
3832 | /* For all variables in the tree_list VARS, mark them as thread local. */ | |
3833 | ||
3834 | void | |
3835 | finish_omp_threadprivate (tree vars) | |
3836 | { | |
3837 | tree t; | |
3838 | ||
3839 | /* Mark every variable in VARS to be assigned thread local storage. */ | |
3840 | for (t = vars; t; t = TREE_CHAIN (t)) | |
3841 | { | |
3842 | tree v = TREE_PURPOSE (t); | |
3843 | ||
edb6000e JJ |
3844 | if (error_operand_p (v)) |
3845 | ; | |
3846 | else if (TREE_CODE (v) != VAR_DECL) | |
3847 | error ("%<threadprivate%> %qD is not file, namespace " | |
3848 | "or block scope variable", v); | |
1799e5d5 RH |
3849 | /* If V had already been marked threadprivate, it doesn't matter |
3850 | whether it had been used prior to this point. */ | |
edb6000e | 3851 | else if (TREE_USED (v) |
1799e5d5 RH |
3852 | && (DECL_LANG_SPECIFIC (v) == NULL |
3853 | || !CP_DECL_THREADPRIVATE_P (v))) | |
3854 | error ("%qE declared %<threadprivate%> after first use", v); | |
3855 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) | |
3856 | error ("automatic variable %qE cannot be %<threadprivate%>", v); | |
3857 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) | |
3858 | error ("%<threadprivate%> %qE has incomplete type", v); | |
a68ab351 JJ |
3859 | else if (TREE_STATIC (v) && TYPE_P (CP_DECL_CONTEXT (v)) |
3860 | && CP_DECL_CONTEXT (v) != current_class_type) | |
3861 | error ("%<threadprivate%> %qE directive not " | |
3862 | "in %qT definition", v, CP_DECL_CONTEXT (v)); | |
1799e5d5 RH |
3863 | else |
3864 | { | |
3865 | /* Allocate a LANG_SPECIFIC structure for V, if needed. */ | |
3866 | if (DECL_LANG_SPECIFIC (v) == NULL) | |
3867 | { | |
3868 | retrofit_lang_decl (v); | |
3869 | ||
3870 | /* Make sure that DECL_DISCRIMINATOR_P continues to be true | |
3871 | after the allocation of the lang_decl structure. */ | |
3872 | if (DECL_DISCRIMINATOR_P (v)) | |
b97e8a14 | 3873 | DECL_LANG_SPECIFIC (v)->u.base.u2sel = 1; |
1799e5d5 RH |
3874 | } |
3875 | ||
3876 | if (! DECL_THREAD_LOCAL_P (v)) | |
3877 | { | |
3878 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
3879 | /* If rtl has been already set for this var, call | |
3880 | make_decl_rtl once again, so that encode_section_info | |
3881 | has a chance to look at the new decl flags. */ | |
3882 | if (DECL_RTL_SET_P (v)) | |
3883 | make_decl_rtl (v); | |
3884 | } | |
3885 | CP_DECL_THREADPRIVATE_P (v) = 1; | |
3886 | } | |
3887 | } | |
3888 | } | |
3889 | ||
3890 | /* Build an OpenMP structured block. */ | |
3891 | ||
3892 | tree | |
3893 | begin_omp_structured_block (void) | |
3894 | { | |
3895 | return do_pushlevel (sk_omp); | |
3896 | } | |
3897 | ||
3898 | tree | |
3899 | finish_omp_structured_block (tree block) | |
3900 | { | |
3901 | return do_poplevel (block); | |
3902 | } | |
3903 | ||
84dc00e8 | 3904 | /* Similarly, except force the retention of the BLOCK. */ |
1799e5d5 RH |
3905 | |
3906 | tree | |
3907 | begin_omp_parallel (void) | |
3908 | { | |
3909 | keep_next_level (true); | |
3910 | return begin_omp_structured_block (); | |
3911 | } | |
3912 | ||
3913 | tree | |
3914 | finish_omp_parallel (tree clauses, tree body) | |
3915 | { | |
3916 | tree stmt; | |
3917 | ||
3918 | body = finish_omp_structured_block (body); | |
b850de4f | 3919 | |
1799e5d5 RH |
3920 | stmt = make_node (OMP_PARALLEL); |
3921 | TREE_TYPE (stmt) = void_type_node; | |
3922 | OMP_PARALLEL_CLAUSES (stmt) = clauses; | |
3923 | OMP_PARALLEL_BODY (stmt) = body; | |
54f7877c | 3924 | |
1799e5d5 RH |
3925 | return add_stmt (stmt); |
3926 | } | |
3927 | ||
a68ab351 JJ |
3928 | tree |
3929 | begin_omp_task (void) | |
3930 | { | |
3931 | keep_next_level (true); | |
3932 | return begin_omp_structured_block (); | |
3933 | } | |
3934 | ||
3935 | tree | |
3936 | finish_omp_task (tree clauses, tree body) | |
3937 | { | |
3938 | tree stmt; | |
3939 | ||
3940 | body = finish_omp_structured_block (body); | |
3941 | ||
3942 | stmt = make_node (OMP_TASK); | |
3943 | TREE_TYPE (stmt) = void_type_node; | |
3944 | OMP_TASK_CLAUSES (stmt) = clauses; | |
3945 | OMP_TASK_BODY (stmt) = body; | |
3946 | ||
3947 | return add_stmt (stmt); | |
3948 | } | |
3949 | ||
3950 | /* Helper function for finish_omp_for. Convert Ith random access iterator | |
3951 | into integral iterator. Return FALSE if successful. */ | |
3952 | ||
3953 | static bool | |
3954 | handle_omp_for_class_iterator (int i, location_t locus, tree declv, tree initv, | |
3955 | tree condv, tree incrv, tree *body, | |
3956 | tree *pre_body, tree clauses) | |
3957 | { | |
3958 | tree diff, iter_init, iter_incr = NULL, last; | |
3959 | tree incr_var = NULL, orig_pre_body, orig_body, c; | |
3960 | tree decl = TREE_VEC_ELT (declv, i); | |
3961 | tree init = TREE_VEC_ELT (initv, i); | |
3962 | tree cond = TREE_VEC_ELT (condv, i); | |
3963 | tree incr = TREE_VEC_ELT (incrv, i); | |
3964 | tree iter = decl; | |
3965 | location_t elocus = locus; | |
3966 | ||
3967 | if (init && EXPR_HAS_LOCATION (init)) | |
3968 | elocus = EXPR_LOCATION (init); | |
3969 | ||
3970 | switch (TREE_CODE (cond)) | |
3971 | { | |
3972 | case GT_EXPR: | |
3973 | case GE_EXPR: | |
3974 | case LT_EXPR: | |
3975 | case LE_EXPR: | |
c5cdb03f JJ |
3976 | if (TREE_OPERAND (cond, 1) == iter) |
3977 | cond = build2 (swap_tree_comparison (TREE_CODE (cond)), | |
3978 | TREE_TYPE (cond), iter, TREE_OPERAND (cond, 0)); | |
a68ab351 JJ |
3979 | if (TREE_OPERAND (cond, 0) != iter) |
3980 | cond = error_mark_node; | |
3981 | else | |
3982 | { | |
3983 | tree tem = build_x_binary_op (TREE_CODE (cond), iter, ERROR_MARK, | |
3984 | TREE_OPERAND (cond, 1), ERROR_MARK, | |
3985 | NULL, tf_warning_or_error); | |
3986 | if (error_operand_p (tem)) | |
3987 | return true; | |
3988 | } | |
3989 | break; | |
3990 | default: | |
3991 | cond = error_mark_node; | |
3992 | break; | |
3993 | } | |
3994 | if (cond == error_mark_node) | |
3995 | { | |
69bc6bff | 3996 | error_at (elocus, "invalid controlling predicate"); |
a68ab351 JJ |
3997 | return true; |
3998 | } | |
3999 | diff = build_x_binary_op (MINUS_EXPR, TREE_OPERAND (cond, 1), | |
4000 | ERROR_MARK, iter, ERROR_MARK, NULL, | |
4001 | tf_warning_or_error); | |
4002 | if (error_operand_p (diff)) | |
4003 | return true; | |
4004 | if (TREE_CODE (TREE_TYPE (diff)) != INTEGER_TYPE) | |
4005 | { | |
69bc6bff MLI |
4006 | error_at (elocus, "difference between %qE and %qD does not have integer type", |
4007 | TREE_OPERAND (cond, 1), iter); | |
a68ab351 JJ |
4008 | return true; |
4009 | } | |
4010 | ||
4011 | switch (TREE_CODE (incr)) | |
4012 | { | |
4013 | case PREINCREMENT_EXPR: | |
4014 | case PREDECREMENT_EXPR: | |
4015 | case POSTINCREMENT_EXPR: | |
4016 | case POSTDECREMENT_EXPR: | |
4017 | if (TREE_OPERAND (incr, 0) != iter) | |
4018 | { | |
4019 | incr = error_mark_node; | |
4020 | break; | |
4021 | } | |
4022 | iter_incr = build_x_unary_op (TREE_CODE (incr), iter, | |
4023 | tf_warning_or_error); | |
4024 | if (error_operand_p (iter_incr)) | |
4025 | return true; | |
4026 | else if (TREE_CODE (incr) == PREINCREMENT_EXPR | |
4027 | || TREE_CODE (incr) == POSTINCREMENT_EXPR) | |
4028 | incr = integer_one_node; | |
4029 | else | |
4030 | incr = integer_minus_one_node; | |
4031 | break; | |
4032 | case MODIFY_EXPR: | |
4033 | if (TREE_OPERAND (incr, 0) != iter) | |
4034 | incr = error_mark_node; | |
4035 | else if (TREE_CODE (TREE_OPERAND (incr, 1)) == PLUS_EXPR | |
4036 | || TREE_CODE (TREE_OPERAND (incr, 1)) == MINUS_EXPR) | |
4037 | { | |
4038 | tree rhs = TREE_OPERAND (incr, 1); | |
4039 | if (TREE_OPERAND (rhs, 0) == iter) | |
4040 | { | |
4041 | if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 1))) | |
4042 | != INTEGER_TYPE) | |
4043 | incr = error_mark_node; | |
4044 | else | |
4045 | { | |
4046 | iter_incr = build_x_modify_expr (iter, TREE_CODE (rhs), | |
4047 | TREE_OPERAND (rhs, 1), | |
4048 | tf_warning_or_error); | |
4049 | if (error_operand_p (iter_incr)) | |
4050 | return true; | |
4051 | incr = TREE_OPERAND (rhs, 1); | |
4052 | incr = cp_convert (TREE_TYPE (diff), incr); | |
4053 | if (TREE_CODE (rhs) == MINUS_EXPR) | |
4054 | { | |
4055 | incr = build1 (NEGATE_EXPR, TREE_TYPE (diff), incr); | |
4056 | incr = fold_if_not_in_template (incr); | |
4057 | } | |
4058 | if (TREE_CODE (incr) != INTEGER_CST | |
4059 | && (TREE_CODE (incr) != NOP_EXPR | |
4060 | || (TREE_CODE (TREE_OPERAND (incr, 0)) | |
4061 | != INTEGER_CST))) | |
4062 | iter_incr = NULL; | |
4063 | } | |
4064 | } | |
4065 | else if (TREE_OPERAND (rhs, 1) == iter) | |
4066 | { | |
4067 | if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 0))) != INTEGER_TYPE | |
4068 | || TREE_CODE (rhs) != PLUS_EXPR) | |
4069 | incr = error_mark_node; | |
4070 | else | |
4071 | { | |
4072 | iter_incr = build_x_binary_op (PLUS_EXPR, | |
4073 | TREE_OPERAND (rhs, 0), | |
4074 | ERROR_MARK, iter, | |
4075 | ERROR_MARK, NULL, | |
4076 | tf_warning_or_error); | |
4077 | if (error_operand_p (iter_incr)) | |
4078 | return true; | |
4079 | iter_incr = build_x_modify_expr (iter, NOP_EXPR, | |
4080 | iter_incr, | |
4081 | tf_warning_or_error); | |
4082 | if (error_operand_p (iter_incr)) | |
4083 | return true; | |
4084 | incr = TREE_OPERAND (rhs, 0); | |
4085 | iter_incr = NULL; | |
4086 | } | |
4087 | } | |
4088 | else | |
4089 | incr = error_mark_node; | |
4090 | } | |
4091 | else | |
4092 | incr = error_mark_node; | |
4093 | break; | |
4094 | default: | |
4095 | incr = error_mark_node; | |
4096 | break; | |
4097 | } | |
4098 | ||
4099 | if (incr == error_mark_node) | |
4100 | { | |
69bc6bff | 4101 | error_at (elocus, "invalid increment expression"); |
a68ab351 JJ |
4102 | return true; |
4103 | } | |
4104 | ||
4105 | incr = cp_convert (TREE_TYPE (diff), incr); | |
4106 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
4107 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE | |
4108 | && OMP_CLAUSE_DECL (c) == iter) | |
4109 | break; | |
4110 | ||
4111 | decl = create_temporary_var (TREE_TYPE (diff)); | |
4112 | pushdecl (decl); | |
4113 | add_decl_expr (decl); | |
4114 | last = create_temporary_var (TREE_TYPE (diff)); | |
4115 | pushdecl (last); | |
4116 | add_decl_expr (last); | |
4117 | if (c && iter_incr == NULL) | |
4118 | { | |
4119 | incr_var = create_temporary_var (TREE_TYPE (diff)); | |
4120 | pushdecl (incr_var); | |
4121 | add_decl_expr (incr_var); | |
4122 | } | |
4123 | gcc_assert (stmts_are_full_exprs_p ()); | |
4124 | ||
4125 | orig_pre_body = *pre_body; | |
4126 | *pre_body = push_stmt_list (); | |
4127 | if (orig_pre_body) | |
4128 | add_stmt (orig_pre_body); | |
4129 | if (init != NULL) | |
4130 | finish_expr_stmt (build_x_modify_expr (iter, NOP_EXPR, init, | |
4131 | tf_warning_or_error)); | |
4132 | init = build_int_cst (TREE_TYPE (diff), 0); | |
4133 | if (c && iter_incr == NULL) | |
4134 | { | |
4135 | finish_expr_stmt (build_x_modify_expr (incr_var, NOP_EXPR, | |
4136 | incr, tf_warning_or_error)); | |
4137 | incr = incr_var; | |
4138 | iter_incr = build_x_modify_expr (iter, PLUS_EXPR, incr, | |
4139 | tf_warning_or_error); | |
4140 | } | |
4141 | finish_expr_stmt (build_x_modify_expr (last, NOP_EXPR, init, | |
4142 | tf_warning_or_error)); | |
4143 | *pre_body = pop_stmt_list (*pre_body); | |
4144 | ||
ba47d38d AH |
4145 | cond = cp_build_binary_op (elocus, |
4146 | TREE_CODE (cond), decl, diff, | |
a68ab351 | 4147 | tf_warning_or_error); |
32e8bb8e | 4148 | incr = build_modify_expr (elocus, decl, NULL_TREE, PLUS_EXPR, |
c2255bc4 | 4149 | elocus, incr, NULL_TREE); |
a68ab351 JJ |
4150 | |
4151 | orig_body = *body; | |
4152 | *body = push_stmt_list (); | |
4153 | iter_init = build2 (MINUS_EXPR, TREE_TYPE (diff), decl, last); | |
4154 | iter_init = build_x_modify_expr (iter, PLUS_EXPR, iter_init, | |
4155 | tf_warning_or_error); | |
4156 | iter_init = build1 (NOP_EXPR, void_type_node, iter_init); | |
4157 | finish_expr_stmt (iter_init); | |
4158 | finish_expr_stmt (build_x_modify_expr (last, NOP_EXPR, decl, | |
4159 | tf_warning_or_error)); | |
4160 | add_stmt (orig_body); | |
4161 | *body = pop_stmt_list (*body); | |
4162 | ||
4163 | if (c) | |
4164 | { | |
4165 | OMP_CLAUSE_LASTPRIVATE_STMT (c) = push_stmt_list (); | |
4166 | finish_expr_stmt (iter_incr); | |
4167 | OMP_CLAUSE_LASTPRIVATE_STMT (c) | |
4168 | = pop_stmt_list (OMP_CLAUSE_LASTPRIVATE_STMT (c)); | |
4169 | } | |
4170 | ||
4171 | TREE_VEC_ELT (declv, i) = decl; | |
4172 | TREE_VEC_ELT (initv, i) = init; | |
4173 | TREE_VEC_ELT (condv, i) = cond; | |
4174 | TREE_VEC_ELT (incrv, i) = incr; | |
4175 | ||
4176 | return false; | |
4177 | } | |
4178 | ||
1799e5d5 RH |
4179 | /* Build and validate an OMP_FOR statement. CLAUSES, BODY, COND, INCR |
4180 | are directly for their associated operands in the statement. DECL | |
4181 | and INIT are a combo; if DECL is NULL then INIT ought to be a | |
4182 | MODIFY_EXPR, and the DECL should be extracted. PRE_BODY are | |
4183 | optional statements that need to go before the loop into its | |
4184 | sk_omp scope. */ | |
4185 | ||
4186 | tree | |
a68ab351 JJ |
4187 | finish_omp_for (location_t locus, tree declv, tree initv, tree condv, |
4188 | tree incrv, tree body, tree pre_body, tree clauses) | |
4189 | { | |
4190 | tree omp_for = NULL, orig_incr = NULL; | |
4191 | tree decl, init, cond, incr; | |
4192 | location_t elocus; | |
4193 | int i; | |
4194 | ||
4195 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (initv)); | |
4196 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (condv)); | |
4197 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (incrv)); | |
4198 | for (i = 0; i < TREE_VEC_LENGTH (declv); i++) | |
4199 | { | |
4200 | decl = TREE_VEC_ELT (declv, i); | |
4201 | init = TREE_VEC_ELT (initv, i); | |
4202 | cond = TREE_VEC_ELT (condv, i); | |
4203 | incr = TREE_VEC_ELT (incrv, i); | |
4204 | elocus = locus; | |
4205 | ||
4206 | if (decl == NULL) | |
4207 | { | |
4208 | if (init != NULL) | |
4209 | switch (TREE_CODE (init)) | |
1799e5d5 | 4210 | { |
a68ab351 | 4211 | case MODIFY_EXPR: |
1799e5d5 | 4212 | decl = TREE_OPERAND (init, 0); |
a68ab351 JJ |
4213 | init = TREE_OPERAND (init, 1); |
4214 | break; | |
4215 | case MODOP_EXPR: | |
4216 | if (TREE_CODE (TREE_OPERAND (init, 1)) == NOP_EXPR) | |
4217 | { | |
4218 | decl = TREE_OPERAND (init, 0); | |
4219 | init = TREE_OPERAND (init, 2); | |
4220 | } | |
4221 | break; | |
4222 | default: | |
4223 | break; | |
1799e5d5 | 4224 | } |
1799e5d5 | 4225 | |
a68ab351 JJ |
4226 | if (decl == NULL) |
4227 | { | |
69bc6bff MLI |
4228 | error_at (locus, |
4229 | "expected iteration declaration or initialization"); | |
a68ab351 JJ |
4230 | return NULL; |
4231 | } | |
1799e5d5 | 4232 | } |
1799e5d5 | 4233 | |
a68ab351 JJ |
4234 | if (init && EXPR_HAS_LOCATION (init)) |
4235 | elocus = EXPR_LOCATION (init); | |
1799e5d5 RH |
4236 | |
4237 | if (cond == NULL) | |
4238 | { | |
69bc6bff | 4239 | error_at (elocus, "missing controlling predicate"); |
1799e5d5 RH |
4240 | return NULL; |
4241 | } | |
4242 | ||
4243 | if (incr == NULL) | |
4244 | { | |
69bc6bff | 4245 | error_at (elocus, "missing increment expression"); |
1799e5d5 RH |
4246 | return NULL; |
4247 | } | |
4248 | ||
a68ab351 JJ |
4249 | TREE_VEC_ELT (declv, i) = decl; |
4250 | TREE_VEC_ELT (initv, i) = init; | |
4251 | } | |
4252 | ||
4253 | if (dependent_omp_for_p (declv, initv, condv, incrv)) | |
4254 | { | |
4255 | tree stmt; | |
4256 | ||
1799e5d5 RH |
4257 | stmt = make_node (OMP_FOR); |
4258 | ||
a68ab351 JJ |
4259 | for (i = 0; i < TREE_VEC_LENGTH (declv); i++) |
4260 | { | |
4261 | /* This is really just a place-holder. We'll be decomposing this | |
4262 | again and going through the cp_build_modify_expr path below when | |
4263 | we instantiate the thing. */ | |
4264 | TREE_VEC_ELT (initv, i) | |
4265 | = build2 (MODIFY_EXPR, void_type_node, TREE_VEC_ELT (declv, i), | |
4266 | TREE_VEC_ELT (initv, i)); | |
4267 | } | |
1799e5d5 RH |
4268 | |
4269 | TREE_TYPE (stmt) = void_type_node; | |
a68ab351 JJ |
4270 | OMP_FOR_INIT (stmt) = initv; |
4271 | OMP_FOR_COND (stmt) = condv; | |
4272 | OMP_FOR_INCR (stmt) = incrv; | |
1799e5d5 RH |
4273 | OMP_FOR_BODY (stmt) = body; |
4274 | OMP_FOR_PRE_BODY (stmt) = pre_body; | |
a68ab351 | 4275 | OMP_FOR_CLAUSES (stmt) = clauses; |
1799e5d5 RH |
4276 | |
4277 | SET_EXPR_LOCATION (stmt, locus); | |
4278 | return add_stmt (stmt); | |
4279 | } | |
4280 | ||
a68ab351 JJ |
4281 | if (processing_template_decl) |
4282 | orig_incr = make_tree_vec (TREE_VEC_LENGTH (incrv)); | |
1799e5d5 | 4283 | |
a68ab351 | 4284 | for (i = 0; i < TREE_VEC_LENGTH (declv); ) |
dadb19e0 | 4285 | { |
a68ab351 JJ |
4286 | decl = TREE_VEC_ELT (declv, i); |
4287 | init = TREE_VEC_ELT (initv, i); | |
4288 | cond = TREE_VEC_ELT (condv, i); | |
4289 | incr = TREE_VEC_ELT (incrv, i); | |
4290 | if (orig_incr) | |
4291 | TREE_VEC_ELT (orig_incr, i) = incr; | |
4292 | elocus = locus; | |
4293 | ||
4294 | if (init && EXPR_HAS_LOCATION (init)) | |
dadb19e0 | 4295 | elocus = EXPR_LOCATION (init); |
dadb19e0 | 4296 | |
a68ab351 JJ |
4297 | if (!DECL_P (decl)) |
4298 | { | |
69bc6bff | 4299 | error_at (elocus, "expected iteration declaration or initialization"); |
a68ab351 JJ |
4300 | return NULL; |
4301 | } | |
969c111d | 4302 | |
a68ab351 JJ |
4303 | if (incr && TREE_CODE (incr) == MODOP_EXPR) |
4304 | { | |
4305 | if (orig_incr) | |
4306 | TREE_VEC_ELT (orig_incr, i) = incr; | |
4307 | incr = cp_build_modify_expr (TREE_OPERAND (incr, 0), | |
4308 | TREE_CODE (TREE_OPERAND (incr, 1)), | |
4309 | TREE_OPERAND (incr, 2), | |
4310 | tf_warning_or_error); | |
4311 | } | |
4312 | ||
4313 | if (CLASS_TYPE_P (TREE_TYPE (decl))) | |
4314 | { | |
4315 | if (handle_omp_for_class_iterator (i, locus, declv, initv, condv, | |
4316 | incrv, &body, &pre_body, clauses)) | |
4317 | return NULL; | |
4318 | continue; | |
4319 | } | |
4320 | ||
4321 | if (!INTEGRAL_TYPE_P (TREE_TYPE (decl)) | |
4322 | && TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE) | |
4323 | { | |
69bc6bff | 4324 | error_at (elocus, "invalid type for iteration variable %qE", decl); |
a68ab351 JJ |
4325 | return NULL; |
4326 | } | |
969c111d | 4327 | |
b2ebd268 | 4328 | if (!processing_template_decl) |
8569b2d0 JJ |
4329 | { |
4330 | init = fold_build_cleanup_point_expr (TREE_TYPE (init), init); | |
4331 | init = cp_build_modify_expr (decl, NOP_EXPR, init, tf_warning_or_error); | |
4332 | } | |
4333 | else | |
4334 | init = build2 (MODIFY_EXPR, void_type_node, decl, init); | |
e4ebaef3 JJ |
4335 | if (cond |
4336 | && TREE_SIDE_EFFECTS (cond) | |
4337 | && COMPARISON_CLASS_P (cond) | |
4338 | && !processing_template_decl) | |
a68ab351 | 4339 | { |
e4ebaef3 JJ |
4340 | tree t = TREE_OPERAND (cond, 0); |
4341 | if (TREE_SIDE_EFFECTS (t) | |
4342 | && t != decl | |
4343 | && (TREE_CODE (t) != NOP_EXPR | |
4344 | || TREE_OPERAND (t, 0) != decl)) | |
4345 | TREE_OPERAND (cond, 0) | |
4346 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 | 4347 | |
e4ebaef3 JJ |
4348 | t = TREE_OPERAND (cond, 1); |
4349 | if (TREE_SIDE_EFFECTS (t) | |
4350 | && t != decl | |
4351 | && (TREE_CODE (t) != NOP_EXPR | |
4352 | || TREE_OPERAND (t, 0) != decl)) | |
4353 | TREE_OPERAND (cond, 1) | |
a68ab351 JJ |
4354 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); |
4355 | } | |
4356 | if (decl == error_mark_node || init == error_mark_node) | |
4357 | return NULL; | |
4358 | ||
4359 | TREE_VEC_ELT (declv, i) = decl; | |
4360 | TREE_VEC_ELT (initv, i) = init; | |
4361 | TREE_VEC_ELT (condv, i) = cond; | |
4362 | TREE_VEC_ELT (incrv, i) = incr; | |
4363 | i++; | |
969c111d | 4364 | } |
a68ab351 JJ |
4365 | |
4366 | if (IS_EMPTY_STMT (pre_body)) | |
4367 | pre_body = NULL; | |
4368 | ||
4369 | omp_for = c_finish_omp_for (locus, declv, initv, condv, incrv, | |
4370 | body, pre_body); | |
4371 | ||
4372 | if (omp_for == NULL) | |
4373 | return NULL; | |
4374 | ||
4375 | for (i = 0; i < TREE_VEC_LENGTH (OMP_FOR_INCR (omp_for)); i++) | |
969c111d | 4376 | { |
e4ebaef3 JJ |
4377 | decl = TREE_OPERAND (TREE_VEC_ELT (OMP_FOR_INIT (omp_for), i), 0); |
4378 | incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i); | |
969c111d | 4379 | |
a68ab351 JJ |
4380 | if (TREE_CODE (incr) != MODIFY_EXPR) |
4381 | continue; | |
4382 | ||
4383 | if (TREE_SIDE_EFFECTS (TREE_OPERAND (incr, 1)) | |
e4ebaef3 JJ |
4384 | && BINARY_CLASS_P (TREE_OPERAND (incr, 1)) |
4385 | && !processing_template_decl) | |
a68ab351 | 4386 | { |
e4ebaef3 JJ |
4387 | tree t = TREE_OPERAND (TREE_OPERAND (incr, 1), 0); |
4388 | if (TREE_SIDE_EFFECTS (t) | |
4389 | && t != decl | |
4390 | && (TREE_CODE (t) != NOP_EXPR | |
4391 | || TREE_OPERAND (t, 0) != decl)) | |
4392 | TREE_OPERAND (TREE_OPERAND (incr, 1), 0) | |
4393 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 | 4394 | |
e4ebaef3 JJ |
4395 | t = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); |
4396 | if (TREE_SIDE_EFFECTS (t) | |
4397 | && t != decl | |
4398 | && (TREE_CODE (t) != NOP_EXPR | |
4399 | || TREE_OPERAND (t, 0) != decl)) | |
4400 | TREE_OPERAND (TREE_OPERAND (incr, 1), 1) | |
4401 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 JJ |
4402 | } |
4403 | ||
4404 | if (orig_incr) | |
4405 | TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i) = TREE_VEC_ELT (orig_incr, i); | |
969c111d | 4406 | } |
a68ab351 JJ |
4407 | if (omp_for != NULL) |
4408 | OMP_FOR_CLAUSES (omp_for) = clauses; | |
969c111d | 4409 | return omp_for; |
1799e5d5 RH |
4410 | } |
4411 | ||
4412 | void | |
4413 | finish_omp_atomic (enum tree_code code, tree lhs, tree rhs) | |
4414 | { | |
239371f9 JJ |
4415 | tree orig_lhs; |
4416 | tree orig_rhs; | |
4417 | bool dependent_p; | |
e6bd5565 MM |
4418 | tree stmt; |
4419 | ||
239371f9 JJ |
4420 | orig_lhs = lhs; |
4421 | orig_rhs = rhs; | |
4422 | dependent_p = false; | |
4423 | stmt = NULL_TREE; | |
4424 | ||
4425 | /* Even in a template, we can detect invalid uses of the atomic | |
4426 | pragma if neither LHS nor RHS is type-dependent. */ | |
4427 | if (processing_template_decl) | |
e6bd5565 | 4428 | { |
239371f9 JJ |
4429 | dependent_p = (type_dependent_expression_p (lhs) |
4430 | || type_dependent_expression_p (rhs)); | |
4431 | if (!dependent_p) | |
e6bd5565 MM |
4432 | { |
4433 | lhs = build_non_dependent_expr (lhs); | |
4434 | rhs = build_non_dependent_expr (rhs); | |
4435 | } | |
239371f9 JJ |
4436 | } |
4437 | if (!dependent_p) | |
4438 | { | |
c2255bc4 | 4439 | stmt = c_finish_omp_atomic (input_location, code, lhs, rhs); |
239371f9 JJ |
4440 | if (stmt == error_mark_node) |
4441 | return; | |
e6bd5565 | 4442 | } |
239371f9 JJ |
4443 | if (processing_template_decl) |
4444 | stmt = build2 (OMP_ATOMIC, void_type_node, integer_zero_node, | |
4445 | build2 (code, void_type_node, orig_lhs, orig_rhs)); | |
4446 | add_stmt (stmt); | |
1799e5d5 RH |
4447 | } |
4448 | ||
4449 | void | |
4450 | finish_omp_barrier (void) | |
4451 | { | |
4452 | tree fn = built_in_decls[BUILT_IN_GOMP_BARRIER]; | |
c166b898 ILT |
4453 | VEC(tree,gc) *vec = make_tree_vector (); |
4454 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4455 | release_tree_vector (vec); | |
1799e5d5 RH |
4456 | finish_expr_stmt (stmt); |
4457 | } | |
4458 | ||
4459 | void | |
4460 | finish_omp_flush (void) | |
4461 | { | |
4462 | tree fn = built_in_decls[BUILT_IN_SYNCHRONIZE]; | |
c166b898 ILT |
4463 | VEC(tree,gc) *vec = make_tree_vector (); |
4464 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4465 | release_tree_vector (vec); | |
1799e5d5 RH |
4466 | finish_expr_stmt (stmt); |
4467 | } | |
4468 | ||
a68ab351 JJ |
4469 | void |
4470 | finish_omp_taskwait (void) | |
1799e5d5 | 4471 | { |
a68ab351 | 4472 | tree fn = built_in_decls[BUILT_IN_GOMP_TASKWAIT]; |
c166b898 ILT |
4473 | VEC(tree,gc) *vec = make_tree_vector (); |
4474 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4475 | release_tree_vector (vec); | |
a68ab351 | 4476 | finish_expr_stmt (stmt); |
1799e5d5 RH |
4477 | } |
4478 | \f | |
54f7877c | 4479 | void |
3a978d72 | 4480 | init_cp_semantics (void) |
54f7877c | 4481 | { |
54f7877c | 4482 | } |
55a3debe DG |
4483 | \f |
4484 | /* Build a STATIC_ASSERT for a static assertion with the condition | |
4485 | CONDITION and the message text MESSAGE. LOCATION is the location | |
4486 | of the static assertion in the source code. When MEMBER_P, this | |
4487 | static assertion is a member of a class. */ | |
4488 | void | |
4489 | finish_static_assert (tree condition, tree message, location_t location, | |
4490 | bool member_p) | |
4491 | { | |
7b3e2d46 DG |
4492 | if (check_for_bare_parameter_packs (condition)) |
4493 | condition = error_mark_node; | |
4494 | ||
55a3debe DG |
4495 | if (type_dependent_expression_p (condition) |
4496 | || value_dependent_expression_p (condition)) | |
4497 | { | |
4498 | /* We're in a template; build a STATIC_ASSERT and put it in | |
4499 | the right place. */ | |
4500 | tree assertion; | |
4501 | ||
4502 | assertion = make_node (STATIC_ASSERT); | |
4503 | STATIC_ASSERT_CONDITION (assertion) = condition; | |
4504 | STATIC_ASSERT_MESSAGE (assertion) = message; | |
4505 | STATIC_ASSERT_SOURCE_LOCATION (assertion) = location; | |
4506 | ||
4507 | if (member_p) | |
4508 | maybe_add_class_template_decl_list (current_class_type, | |
4509 | assertion, | |
4510 | /*friend_p=*/0); | |
4511 | else | |
4512 | add_stmt (assertion); | |
4513 | ||
4514 | return; | |
4515 | } | |
4516 | ||
4517 | /* Fold the expression and convert it to a boolean value. */ | |
4518 | condition = fold_non_dependent_expr (condition); | |
4519 | condition = cp_convert (boolean_type_node, condition); | |
4520 | ||
4521 | if (TREE_CODE (condition) == INTEGER_CST && !integer_zerop (condition)) | |
4522 | /* Do nothing; the condition is satisfied. */ | |
4523 | ; | |
4524 | else | |
4525 | { | |
4526 | location_t saved_loc = input_location; | |
4527 | ||
4528 | input_location = location; | |
4529 | if (TREE_CODE (condition) == INTEGER_CST | |
4530 | && integer_zerop (condition)) | |
4531 | /* Report the error. */ | |
4532 | error ("static assertion failed: %E", message); | |
4533 | else if (condition && condition != error_mark_node) | |
4534 | error ("non-constant condition for static assertion"); | |
4535 | input_location = saved_loc; | |
4536 | } | |
4537 | } | |
3ad6a8e1 | 4538 | \f |
a77f94e2 JM |
4539 | /* Returns decltype((EXPR)) for cases where we can drop the decltype and |
4540 | just return the type even though EXPR is a type-dependent expression. | |
4541 | The ABI specifies which cases this applies to, which is a subset of the | |
4542 | possible cases. */ | |
4543 | ||
4544 | tree | |
4545 | describable_type (tree expr) | |
4546 | { | |
4547 | tree type = NULL_TREE; | |
4548 | ||
a77f94e2 JM |
4549 | if (! type_dependent_expression_p (expr) |
4550 | && ! type_unknown_p (expr)) | |
4551 | { | |
aef8bce8 | 4552 | type = unlowered_expr_type (expr); |
a77f94e2 JM |
4553 | if (real_lvalue_p (expr)) |
4554 | type = build_reference_type (type); | |
4555 | } | |
a77f94e2 JM |
4556 | |
4557 | if (type) | |
4558 | return type; | |
4559 | ||
4560 | switch (TREE_CODE (expr)) | |
4561 | { | |
4562 | case VAR_DECL: | |
4563 | case PARM_DECL: | |
4564 | case RESULT_DECL: | |
4565 | case FUNCTION_DECL: | |
4566 | /* Named rvalue reference becomes lvalue. */ | |
4567 | type = build_reference_type (non_reference (TREE_TYPE (expr))); | |
4568 | break; | |
4569 | ||
4570 | case NEW_EXPR: | |
4571 | case CONST_DECL: | |
4572 | case TEMPLATE_PARM_INDEX: | |
4573 | case CAST_EXPR: | |
4574 | case STATIC_CAST_EXPR: | |
4575 | case REINTERPRET_CAST_EXPR: | |
4576 | case CONST_CAST_EXPR: | |
4577 | case DYNAMIC_CAST_EXPR: | |
4578 | type = TREE_TYPE (expr); | |
4579 | break; | |
4580 | ||
4581 | case INDIRECT_REF: | |
4582 | { | |
4583 | tree ptrtype = describable_type (TREE_OPERAND (expr, 0)); | |
4584 | if (ptrtype && POINTER_TYPE_P (ptrtype)) | |
4585 | type = build_reference_type (TREE_TYPE (ptrtype)); | |
4586 | } | |
4587 | break; | |
4588 | ||
4589 | default: | |
4590 | if (TREE_CODE_CLASS (TREE_CODE (expr)) == tcc_constant) | |
4591 | type = TREE_TYPE (expr); | |
4592 | break; | |
4593 | } | |
4594 | ||
4595 | if (type && type_uses_auto (type)) | |
4596 | return NULL_TREE; | |
4597 | else | |
4598 | return type; | |
4599 | } | |
4600 | ||
3ad6a8e1 DG |
4601 | /* Implements the C++0x decltype keyword. Returns the type of EXPR, |
4602 | suitable for use as a type-specifier. | |
4603 | ||
4604 | ID_EXPRESSION_OR_MEMBER_ACCESS_P is true when EXPR was parsed as an | |
4605 | id-expression or a class member access, FALSE when it was parsed as | |
4606 | a full expression. */ | |
a77f94e2 | 4607 | |
3ad6a8e1 DG |
4608 | tree |
4609 | finish_decltype_type (tree expr, bool id_expression_or_member_access_p) | |
4610 | { | |
4611 | tree orig_expr = expr; | |
056dd1af | 4612 | tree type = NULL_TREE; |
3ad6a8e1 | 4613 | |
e4fd5b87 DG |
4614 | if (!expr || error_operand_p (expr)) |
4615 | return error_mark_node; | |
4616 | ||
7a547b93 JJ |
4617 | if (TYPE_P (expr) |
4618 | || TREE_CODE (expr) == TYPE_DECL | |
4619 | || (TREE_CODE (expr) == BIT_NOT_EXPR | |
4620 | && TYPE_P (TREE_OPERAND (expr, 0)))) | |
4621 | { | |
4622 | error ("argument to decltype must be an expression"); | |
4623 | return error_mark_node; | |
4624 | } | |
4625 | ||
3ad6a8e1 DG |
4626 | if (type_dependent_expression_p (expr)) |
4627 | { | |
a77f94e2 JM |
4628 | if (id_expression_or_member_access_p) |
4629 | { | |
4630 | switch (TREE_CODE (expr)) | |
4631 | { | |
4632 | case VAR_DECL: | |
4633 | case PARM_DECL: | |
4634 | case RESULT_DECL: | |
4635 | case FUNCTION_DECL: | |
4636 | case CONST_DECL: | |
4637 | case TEMPLATE_PARM_INDEX: | |
4638 | type = TREE_TYPE (expr); | |
4639 | break; | |
4640 | ||
4641 | default: | |
4642 | break; | |
4643 | } | |
4644 | } | |
a77f94e2 JM |
4645 | |
4646 | if (type && !type_uses_auto (type)) | |
4647 | return type; | |
4648 | ||
9e1e64ec | 4649 | type = cxx_make_type (DECLTYPE_TYPE); |
3ad6a8e1 DG |
4650 | DECLTYPE_TYPE_EXPR (type) = expr; |
4651 | DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type) | |
4652 | = id_expression_or_member_access_p; | |
4653 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
4654 | ||
4655 | return type; | |
4656 | } | |
4657 | ||
4658 | /* The type denoted by decltype(e) is defined as follows: */ | |
4659 | ||
4660 | if (id_expression_or_member_access_p) | |
4661 | { | |
4662 | /* If e is an id-expression or a class member access (5.2.5 | |
4663 | [expr.ref]), decltype(e) is defined as the type of the entity | |
4664 | named by e. If there is no such entity, or e names a set of | |
4665 | overloaded functions, the program is ill-formed. */ | |
4666 | if (TREE_CODE (expr) == IDENTIFIER_NODE) | |
4667 | expr = lookup_name (expr); | |
4668 | ||
4669 | if (TREE_CODE (expr) == INDIRECT_REF) | |
4670 | /* This can happen when the expression is, e.g., "a.b". Just | |
4671 | look at the underlying operand. */ | |
4672 | expr = TREE_OPERAND (expr, 0); | |
4673 | ||
4674 | if (TREE_CODE (expr) == OFFSET_REF | |
4675 | || TREE_CODE (expr) == MEMBER_REF) | |
4676 | /* We're only interested in the field itself. If it is a | |
4677 | BASELINK, we will need to see through it in the next | |
4678 | step. */ | |
4679 | expr = TREE_OPERAND (expr, 1); | |
4680 | ||
4681 | if (TREE_CODE (expr) == BASELINK) | |
4682 | /* See through BASELINK nodes to the underlying functions. */ | |
4683 | expr = BASELINK_FUNCTIONS (expr); | |
4684 | ||
4685 | if (TREE_CODE (expr) == OVERLOAD) | |
4686 | { | |
4687 | if (OVL_CHAIN (expr)) | |
4688 | { | |
4689 | error ("%qE refers to a set of overloaded functions", orig_expr); | |
4690 | return error_mark_node; | |
4691 | } | |
4692 | else | |
4693 | /* An overload set containing only one function: just look | |
4694 | at that function. */ | |
4695 | expr = OVL_FUNCTION (expr); | |
4696 | } | |
4697 | ||
4698 | switch (TREE_CODE (expr)) | |
4699 | { | |
4700 | case FIELD_DECL: | |
e76d7cc7 | 4701 | if (DECL_BIT_FIELD_TYPE (expr)) |
3ad6a8e1 DG |
4702 | { |
4703 | type = DECL_BIT_FIELD_TYPE (expr); | |
4704 | break; | |
4705 | } | |
4706 | /* Fall through for fields that aren't bitfields. */ | |
4707 | ||
4708 | case FUNCTION_DECL: | |
4709 | case VAR_DECL: | |
4710 | case CONST_DECL: | |
4711 | case PARM_DECL: | |
4712 | case RESULT_DECL: | |
088d4f95 | 4713 | case TEMPLATE_PARM_INDEX: |
3ad6a8e1 DG |
4714 | type = TREE_TYPE (expr); |
4715 | break; | |
4716 | ||
4717 | case ERROR_MARK: | |
4718 | type = error_mark_node; | |
4719 | break; | |
4720 | ||
4721 | case COMPONENT_REF: | |
4722 | type = is_bitfield_expr_with_lowered_type (expr); | |
4723 | if (!type) | |
4724 | type = TREE_TYPE (TREE_OPERAND (expr, 1)); | |
4725 | break; | |
4726 | ||
4727 | case BIT_FIELD_REF: | |
4728 | gcc_unreachable (); | |
4729 | ||
4730 | case INTEGER_CST: | |
4731 | /* We can get here when the id-expression refers to an | |
4732 | enumerator. */ | |
4733 | type = TREE_TYPE (expr); | |
4734 | break; | |
4735 | ||
4736 | default: | |
91929b4d JJ |
4737 | gcc_assert (TYPE_P (expr) || DECL_P (expr) |
4738 | || TREE_CODE (expr) == SCOPE_REF); | |
3ad6a8e1 DG |
4739 | error ("argument to decltype must be an expression"); |
4740 | return error_mark_node; | |
4741 | } | |
4742 | } | |
4743 | else | |
4744 | { | |
e4fd5b87 DG |
4745 | /* Expressions of reference type are sometimes wrapped in |
4746 | INDIRECT_REFs. INDIRECT_REFs are just internal compiler | |
4747 | representation, not part of the language, so we have to look | |
4748 | through them. */ | |
4749 | if (TREE_CODE (expr) == INDIRECT_REF | |
4750 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) | |
4751 | == REFERENCE_TYPE) | |
4752 | expr = TREE_OPERAND (expr, 0); | |
4753 | ||
ed85a1f6 DG |
4754 | if (TREE_CODE (expr) == CALL_EXPR) |
4755 | { | |
4756 | /* If e is a function call (5.2.2 [expr.call]) or an | |
3ad6a8e1 DG |
4757 | invocation of an overloaded operator (parentheses around e |
4758 | are ignored), decltype(e) is defined as the return type of | |
4759 | that function. */ | |
ed85a1f6 DG |
4760 | tree fndecl = get_callee_fndecl (expr); |
4761 | if (fndecl && fndecl != error_mark_node) | |
4762 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
4763 | else | |
4764 | { | |
4765 | tree target_type = TREE_TYPE (CALL_EXPR_FN (expr)); | |
4766 | if ((TREE_CODE (target_type) == REFERENCE_TYPE | |
4767 | || TREE_CODE (target_type) == POINTER_TYPE) | |
4768 | && (TREE_CODE (TREE_TYPE (target_type)) == FUNCTION_TYPE | |
4769 | || TREE_CODE (TREE_TYPE (target_type)) == METHOD_TYPE)) | |
4770 | type = TREE_TYPE (TREE_TYPE (target_type)); | |
4771 | else | |
4772 | sorry ("unable to determine the declared type of expression %<%E%>", | |
4773 | expr); | |
4774 | } | |
4775 | } | |
3ad6a8e1 DG |
4776 | else |
4777 | { | |
4778 | type = is_bitfield_expr_with_lowered_type (expr); | |
4779 | if (type) | |
4780 | { | |
4781 | /* Bitfields are special, because their type encodes the | |
4782 | number of bits they store. If the expression referenced a | |
4783 | bitfield, TYPE now has the declared type of that | |
4784 | bitfield. */ | |
4785 | type = cp_build_qualified_type (type, | |
4786 | cp_type_quals (TREE_TYPE (expr))); | |
4787 | ||
4788 | if (real_lvalue_p (expr)) | |
4789 | type = build_reference_type (type); | |
4790 | } | |
4791 | else | |
4792 | { | |
4793 | /* Otherwise, where T is the type of e, if e is an lvalue, | |
4794 | decltype(e) is defined as T&, otherwise decltype(e) is | |
4795 | defined as T. */ | |
4796 | type = TREE_TYPE (expr); | |
e4fd5b87 DG |
4797 | if (type == error_mark_node) |
4798 | return error_mark_node; | |
4799 | else if (expr == current_class_ptr) | |
3ad6a8e1 DG |
4800 | /* If the expression is just "this", we want the |
4801 | cv-unqualified pointer for the "this" type. */ | |
4802 | type = TYPE_MAIN_VARIANT (type); | |
4803 | else if (real_lvalue_p (expr)) | |
4804 | { | |
4805 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
4806 | type = build_reference_type (type); | |
4807 | } | |
4808 | else | |
4809 | type = non_reference (type); | |
4810 | } | |
4811 | } | |
4812 | } | |
4813 | ||
4814 | if (!type || type == unknown_type_node) | |
4815 | { | |
4816 | error ("type of %qE is unknown", expr); | |
4817 | return error_mark_node; | |
4818 | } | |
4819 | ||
4820 | return type; | |
4821 | } | |
cf22909c | 4822 | |
b29441ec PC |
4823 | /* Called from trait_expr_value to evaluate either __has_nothrow_assign or |
4824 | __has_nothrow_copy, depending on assign_p. */ | |
cb68ec50 PC |
4825 | |
4826 | static bool | |
b29441ec | 4827 | classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p) |
cb68ec50 | 4828 | { |
b29441ec | 4829 | tree fns; |
cb68ec50 | 4830 | |
b29441ec PC |
4831 | if (assign_p) |
4832 | { | |
4833 | int ix; | |
4834 | ix = lookup_fnfields_1 (type, ansi_assopname (NOP_EXPR)); | |
4835 | if (ix < 0) | |
cb68ec50 | 4836 | return false; |
b29441ec PC |
4837 | fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix); |
4838 | } | |
4839 | else if (TYPE_HAS_INIT_REF (type)) | |
4840 | { | |
4841 | /* If construction of the copy constructor was postponed, create | |
4842 | it now. */ | |
4843 | if (CLASSTYPE_LAZY_COPY_CTOR (type)) | |
4844 | lazily_declare_fn (sfk_copy_constructor, type); | |
4845 | fns = CLASSTYPE_CONSTRUCTORS (type); | |
cb68ec50 PC |
4846 | } |
4847 | else | |
4848 | return false; | |
4849 | ||
b29441ec | 4850 | for (; fns; fns = OVL_NEXT (fns)) |
279086c3 PC |
4851 | { |
4852 | tree fn = OVL_CURRENT (fns); | |
4853 | ||
4854 | if (assign_p) | |
4855 | { | |
4856 | if (copy_fn_p (fn) == 0) | |
4857 | continue; | |
4858 | } | |
4859 | else if (copy_fn_p (fn) <= 0) | |
4860 | continue; | |
4861 | ||
4862 | if (!TYPE_NOTHROW_P (TREE_TYPE (fn))) | |
4863 | return false; | |
4864 | } | |
b29441ec | 4865 | |
cb68ec50 PC |
4866 | return true; |
4867 | } | |
4868 | ||
4869 | /* Actually evaluates the trait. */ | |
4870 | ||
4871 | static bool | |
4872 | trait_expr_value (cp_trait_kind kind, tree type1, tree type2) | |
4873 | { | |
4874 | enum tree_code type_code1; | |
4875 | tree t; | |
4876 | ||
4877 | type_code1 = TREE_CODE (type1); | |
4878 | ||
4879 | switch (kind) | |
4880 | { | |
4881 | case CPTK_HAS_NOTHROW_ASSIGN: | |
c32097d8 | 4882 | type1 = strip_array_types (type1); |
b29441ec PC |
4883 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
4884 | && (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2) | |
4885 | || (CLASS_TYPE_P (type1) | |
4886 | && classtype_has_nothrow_assign_or_copy_p (type1, | |
4887 | true)))); | |
cb68ec50 PC |
4888 | |
4889 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
c32097d8 JM |
4890 | /* ??? The standard seems to be missing the "or array of such a class |
4891 | type" wording for this trait. */ | |
4892 | type1 = strip_array_types (type1); | |
cb68ec50 | 4893 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
c32097d8 | 4894 | && (trivial_type_p (type1) |
cb68ec50 PC |
4895 | || (CLASS_TYPE_P (type1) |
4896 | && TYPE_HAS_TRIVIAL_ASSIGN_REF (type1)))); | |
4897 | ||
4898 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
4899 | type1 = strip_array_types (type1); | |
4900 | return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2) | |
4901 | || (CLASS_TYPE_P (type1) | |
e24313f3 PC |
4902 | && (t = locate_ctor (type1, NULL)) |
4903 | && TYPE_NOTHROW_P (TREE_TYPE (t)))); | |
cb68ec50 PC |
4904 | |
4905 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
4906 | type1 = strip_array_types (type1); | |
c32097d8 | 4907 | return (trivial_type_p (type1) |
cb68ec50 PC |
4908 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1))); |
4909 | ||
4910 | case CPTK_HAS_NOTHROW_COPY: | |
c32097d8 | 4911 | type1 = strip_array_types (type1); |
cb68ec50 PC |
4912 | return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2) |
4913 | || (CLASS_TYPE_P (type1) | |
b29441ec | 4914 | && classtype_has_nothrow_assign_or_copy_p (type1, false))); |
cb68ec50 PC |
4915 | |
4916 | case CPTK_HAS_TRIVIAL_COPY: | |
c32097d8 JM |
4917 | /* ??? The standard seems to be missing the "or array of such a class |
4918 | type" wording for this trait. */ | |
4919 | type1 = strip_array_types (type1); | |
4920 | return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE | |
cb68ec50 PC |
4921 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_INIT_REF (type1))); |
4922 | ||
4923 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
4924 | type1 = strip_array_types (type1); | |
c32097d8 | 4925 | return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE |
cb68ec50 PC |
4926 | || (CLASS_TYPE_P (type1) |
4927 | && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1))); | |
4928 | ||
4929 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
4930 | return (CLASS_TYPE_P (type1) | |
4931 | && (t = locate_dtor (type1, NULL)) && DECL_VIRTUAL_P (t)); | |
4932 | ||
4933 | case CPTK_IS_ABSTRACT: | |
4934 | return (CLASS_TYPE_P (type1) && CLASSTYPE_PURE_VIRTUALS (type1)); | |
4935 | ||
4936 | case CPTK_IS_BASE_OF: | |
4937 | return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
4938 | && DERIVED_FROM_P (type1, type2)); | |
4939 | ||
4940 | case CPTK_IS_CLASS: | |
4941 | return (NON_UNION_CLASS_TYPE_P (type1)); | |
4942 | ||
4943 | case CPTK_IS_CONVERTIBLE_TO: | |
4944 | /* TODO */ | |
4945 | return false; | |
4946 | ||
4947 | case CPTK_IS_EMPTY: | |
4948 | return (NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1)); | |
4949 | ||
4950 | case CPTK_IS_ENUM: | |
4951 | return (type_code1 == ENUMERAL_TYPE); | |
4952 | ||
4953 | case CPTK_IS_POD: | |
4954 | return (pod_type_p (type1)); | |
4955 | ||
4956 | case CPTK_IS_POLYMORPHIC: | |
4957 | return (CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1)); | |
4958 | ||
c32097d8 JM |
4959 | case CPTK_IS_STD_LAYOUT: |
4960 | return (std_layout_type_p (type1)); | |
4961 | ||
4962 | case CPTK_IS_TRIVIAL: | |
4963 | return (trivial_type_p (type1)); | |
4964 | ||
cb68ec50 PC |
4965 | case CPTK_IS_UNION: |
4966 | return (type_code1 == UNION_TYPE); | |
4967 | ||
4968 | default: | |
4969 | gcc_unreachable (); | |
4970 | return false; | |
4971 | } | |
4972 | } | |
4973 | ||
ff284b4b PC |
4974 | /* Returns true if TYPE is a complete type, an array of unknown bound, |
4975 | or (possibly cv-qualified) void, returns false otherwise. */ | |
4976 | ||
4977 | static bool | |
4978 | check_trait_type (tree type) | |
4979 | { | |
4980 | if (COMPLETE_TYPE_P (type)) | |
4981 | return true; | |
4982 | ||
4983 | if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)) | |
4984 | return true; | |
4985 | ||
4986 | if (VOID_TYPE_P (type)) | |
4987 | return true; | |
4988 | ||
4989 | return false; | |
4990 | } | |
4991 | ||
cb68ec50 PC |
4992 | /* Process a trait expression. */ |
4993 | ||
4994 | tree | |
4995 | finish_trait_expr (cp_trait_kind kind, tree type1, tree type2) | |
4996 | { | |
4997 | gcc_assert (kind == CPTK_HAS_NOTHROW_ASSIGN | |
4998 | || kind == CPTK_HAS_NOTHROW_CONSTRUCTOR | |
4999 | || kind == CPTK_HAS_NOTHROW_COPY | |
5000 | || kind == CPTK_HAS_TRIVIAL_ASSIGN | |
5001 | || kind == CPTK_HAS_TRIVIAL_CONSTRUCTOR | |
5002 | || kind == CPTK_HAS_TRIVIAL_COPY | |
5003 | || kind == CPTK_HAS_TRIVIAL_DESTRUCTOR | |
5004 | || kind == CPTK_HAS_VIRTUAL_DESTRUCTOR | |
5005 | || kind == CPTK_IS_ABSTRACT | |
5006 | || kind == CPTK_IS_BASE_OF | |
5007 | || kind == CPTK_IS_CLASS | |
5008 | || kind == CPTK_IS_CONVERTIBLE_TO | |
5009 | || kind == CPTK_IS_EMPTY | |
5010 | || kind == CPTK_IS_ENUM | |
5011 | || kind == CPTK_IS_POD | |
5012 | || kind == CPTK_IS_POLYMORPHIC | |
c32097d8 JM |
5013 | || kind == CPTK_IS_STD_LAYOUT |
5014 | || kind == CPTK_IS_TRIVIAL | |
cb68ec50 PC |
5015 | || kind == CPTK_IS_UNION); |
5016 | ||
5017 | if (kind == CPTK_IS_CONVERTIBLE_TO) | |
5018 | { | |
5019 | sorry ("__is_convertible_to"); | |
5020 | return error_mark_node; | |
5021 | } | |
5022 | ||
5023 | if (type1 == error_mark_node | |
5024 | || ((kind == CPTK_IS_BASE_OF || kind == CPTK_IS_CONVERTIBLE_TO) | |
5025 | && type2 == error_mark_node)) | |
5026 | return error_mark_node; | |
5027 | ||
5028 | if (processing_template_decl) | |
5029 | { | |
5030 | tree trait_expr = make_node (TRAIT_EXPR); | |
5031 | TREE_TYPE (trait_expr) = boolean_type_node; | |
5032 | TRAIT_EXPR_TYPE1 (trait_expr) = type1; | |
5033 | TRAIT_EXPR_TYPE2 (trait_expr) = type2; | |
5034 | TRAIT_EXPR_KIND (trait_expr) = kind; | |
5035 | return trait_expr; | |
5036 | } | |
5037 | ||
10c1d4af PC |
5038 | complete_type (type1); |
5039 | if (type2) | |
5040 | complete_type (type2); | |
5041 | ||
ff284b4b | 5042 | switch (kind) |
cb68ec50 | 5043 | { |
ff284b4b PC |
5044 | case CPTK_HAS_NOTHROW_ASSIGN: |
5045 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
5046 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
5047 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
5048 | case CPTK_HAS_NOTHROW_COPY: | |
5049 | case CPTK_HAS_TRIVIAL_COPY: | |
5050 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
5051 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
5052 | case CPTK_IS_ABSTRACT: | |
5053 | case CPTK_IS_EMPTY: | |
5054 | case CPTK_IS_POD: | |
5055 | case CPTK_IS_POLYMORPHIC: | |
c32097d8 JM |
5056 | case CPTK_IS_STD_LAYOUT: |
5057 | case CPTK_IS_TRIVIAL: | |
ff284b4b PC |
5058 | if (!check_trait_type (type1)) |
5059 | { | |
5060 | error ("incomplete type %qT not allowed", type1); | |
5061 | return error_mark_node; | |
5062 | } | |
5063 | break; | |
5064 | ||
5065 | case CPTK_IS_BASE_OF: | |
5066 | if (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
5067 | && !same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
5068 | && !COMPLETE_TYPE_P (type2)) | |
5069 | { | |
5070 | error ("incomplete type %qT not allowed", type2); | |
5071 | return error_mark_node; | |
5072 | } | |
5073 | break; | |
5074 | ||
5075 | case CPTK_IS_CLASS: | |
5076 | case CPTK_IS_ENUM: | |
5077 | case CPTK_IS_UNION: | |
5078 | break; | |
5079 | ||
5080 | case CPTK_IS_CONVERTIBLE_TO: | |
5081 | default: | |
5082 | gcc_unreachable (); | |
cb68ec50 PC |
5083 | } |
5084 | ||
5085 | return (trait_expr_value (kind, type1, type2) | |
5086 | ? boolean_true_node : boolean_false_node); | |
5087 | } | |
5088 | ||
6ec637a4 JJ |
5089 | /* Do-nothing variants of functions to handle pragma FLOAT_CONST_DECIMAL64, |
5090 | which is ignored for C++. */ | |
5091 | ||
5092 | void | |
5093 | set_float_const_decimal64 (void) | |
5094 | { | |
5095 | } | |
5096 | ||
5097 | void | |
5098 | clear_float_const_decimal64 (void) | |
5099 | { | |
5100 | } | |
5101 | ||
5102 | bool | |
5103 | float_const_decimal64_p (void) | |
5104 | { | |
5105 | return 0; | |
5106 | } | |
5107 | ||
cf22909c | 5108 | #include "gt-cp-semantics.h" |