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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 JJ |
6 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7 | 2008 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" |
ad321293 MM |
49 | |
50 | /* There routines provide a modular interface to perform many parsing | |
51 | operations. They may therefore be used during actual parsing, or | |
52 | during template instantiation, which may be regarded as a | |
0b4d5576 | 53 | degenerate form of parsing. */ |
ad321293 | 54 | |
3a978d72 NN |
55 | static tree maybe_convert_cond (tree); |
56 | static tree simplify_aggr_init_exprs_r (tree *, int *, void *); | |
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 | ||
3e1f1ba5 NS |
111 | typedef struct deferred_access GTY(()) |
112 | { | |
d6b418fa | 113 | /* A VEC representing name-lookups for which we have deferred |
3e1f1ba5 NS |
114 | checking access controls. We cannot check the accessibility of |
115 | names used in a decl-specifier-seq until we know what is being | |
116 | declared because code like: | |
117 | ||
c8094d83 | 118 | class A { |
0cbd7506 MS |
119 | class B {}; |
120 | B* f(); | |
3e1f1ba5 NS |
121 | } |
122 | ||
123 | A::B* A::f() { return 0; } | |
124 | ||
d6b418fa SM |
125 | is valid, even though `A::B' is not generally accessible. */ |
126 | VEC (deferred_access_check,gc)* GTY(()) deferred_access_checks; | |
c8094d83 | 127 | |
3e1f1ba5 NS |
128 | /* The current mode of access checks. */ |
129 | enum deferring_kind deferring_access_checks_kind; | |
c8094d83 | 130 | |
3e1f1ba5 | 131 | } deferred_access; |
d4e6fecb NS |
132 | DEF_VEC_O (deferred_access); |
133 | DEF_VEC_ALLOC_O (deferred_access,gc); | |
3e1f1ba5 | 134 | |
cf22909c | 135 | /* Data for deferred access checking. */ |
d4e6fecb | 136 | static GTY(()) VEC(deferred_access,gc) *deferred_access_stack; |
3e1f1ba5 | 137 | static GTY(()) unsigned deferred_access_no_check; |
cf22909c KL |
138 | |
139 | /* Save the current deferred access states and start deferred | |
140 | access checking iff DEFER_P is true. */ | |
141 | ||
572c2b17 AP |
142 | void |
143 | push_deferring_access_checks (deferring_kind deferring) | |
cf22909c | 144 | { |
78757caa KL |
145 | /* For context like template instantiation, access checking |
146 | disabling applies to all nested context. */ | |
3e1f1ba5 NS |
147 | if (deferred_access_no_check || deferring == dk_no_check) |
148 | deferred_access_no_check++; | |
cf22909c | 149 | else |
3e1f1ba5 NS |
150 | { |
151 | deferred_access *ptr; | |
cf22909c | 152 | |
d4e6fecb | 153 | ptr = VEC_safe_push (deferred_access, gc, deferred_access_stack, NULL); |
d6b418fa | 154 | ptr->deferred_access_checks = NULL; |
3e1f1ba5 NS |
155 | ptr->deferring_access_checks_kind = deferring; |
156 | } | |
cf22909c KL |
157 | } |
158 | ||
159 | /* Resume deferring access checks again after we stopped doing | |
160 | this previously. */ | |
161 | ||
572c2b17 AP |
162 | void |
163 | resume_deferring_access_checks (void) | |
cf22909c | 164 | { |
3e1f1ba5 NS |
165 | if (!deferred_access_no_check) |
166 | VEC_last (deferred_access, deferred_access_stack) | |
167 | ->deferring_access_checks_kind = dk_deferred; | |
cf22909c KL |
168 | } |
169 | ||
170 | /* Stop deferring access checks. */ | |
171 | ||
572c2b17 AP |
172 | void |
173 | stop_deferring_access_checks (void) | |
cf22909c | 174 | { |
3e1f1ba5 NS |
175 | if (!deferred_access_no_check) |
176 | VEC_last (deferred_access, deferred_access_stack) | |
177 | ->deferring_access_checks_kind = dk_no_deferred; | |
cf22909c KL |
178 | } |
179 | ||
180 | /* Discard the current deferred access checks and restore the | |
181 | previous states. */ | |
182 | ||
572c2b17 AP |
183 | void |
184 | pop_deferring_access_checks (void) | |
cf22909c | 185 | { |
3e1f1ba5 NS |
186 | if (deferred_access_no_check) |
187 | deferred_access_no_check--; | |
188 | else | |
189 | VEC_pop (deferred_access, deferred_access_stack); | |
cf22909c KL |
190 | } |
191 | ||
c8094d83 MS |
192 | /* Returns a TREE_LIST representing the deferred checks. |
193 | The TREE_PURPOSE of each node is the type through which the | |
cf22909c KL |
194 | access occurred; the TREE_VALUE is the declaration named. |
195 | */ | |
196 | ||
d6b418fa | 197 | VEC (deferred_access_check,gc)* |
572c2b17 | 198 | get_deferred_access_checks (void) |
cf22909c | 199 | { |
3e1f1ba5 NS |
200 | if (deferred_access_no_check) |
201 | return NULL; | |
202 | else | |
203 | return (VEC_last (deferred_access, deferred_access_stack) | |
204 | ->deferred_access_checks); | |
cf22909c KL |
205 | } |
206 | ||
207 | /* Take current deferred checks and combine with the | |
208 | previous states if we also defer checks previously. | |
209 | Otherwise perform checks now. */ | |
210 | ||
572c2b17 AP |
211 | void |
212 | pop_to_parent_deferring_access_checks (void) | |
cf22909c | 213 | { |
3e1f1ba5 NS |
214 | if (deferred_access_no_check) |
215 | deferred_access_no_check--; | |
216 | else | |
217 | { | |
d6b418fa | 218 | VEC (deferred_access_check,gc) *checks; |
3e1f1ba5 NS |
219 | deferred_access *ptr; |
220 | ||
221 | checks = (VEC_last (deferred_access, deferred_access_stack) | |
222 | ->deferred_access_checks); | |
223 | ||
224 | VEC_pop (deferred_access, deferred_access_stack); | |
225 | ptr = VEC_last (deferred_access, deferred_access_stack); | |
226 | if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
227 | { | |
228 | /* Check access. */ | |
d6b418fa | 229 | perform_access_checks (checks); |
3e1f1ba5 NS |
230 | } |
231 | else | |
232 | { | |
233 | /* Merge with parent. */ | |
d6b418fa SM |
234 | int i, j; |
235 | deferred_access_check *chk, *probe; | |
c8094d83 | 236 | |
d6b418fa SM |
237 | for (i = 0 ; |
238 | VEC_iterate (deferred_access_check, checks, i, chk) ; | |
239 | ++i) | |
3e1f1ba5 | 240 | { |
d6b418fa SM |
241 | for (j = 0 ; |
242 | VEC_iterate (deferred_access_check, | |
243 | ptr->deferred_access_checks, j, probe) ; | |
244 | ++j) | |
245 | { | |
246 | if (probe->binfo == chk->binfo && | |
247 | probe->decl == chk->decl && | |
248 | probe->diag_decl == chk->diag_decl) | |
249 | goto found; | |
250 | } | |
3e1f1ba5 | 251 | /* Insert into parent's checks. */ |
d6b418fa SM |
252 | VEC_safe_push (deferred_access_check, gc, |
253 | ptr->deferred_access_checks, chk); | |
3e1f1ba5 NS |
254 | found:; |
255 | } | |
256 | } | |
257 | } | |
cf22909c KL |
258 | } |
259 | ||
6b648482 MM |
260 | /* Perform the access checks in CHECKS. The TREE_PURPOSE of each node |
261 | is the BINFO indicating the qualifying scope used to access the | |
262 | DECL node stored in the TREE_VALUE of the node. */ | |
263 | ||
264 | void | |
d6b418fa | 265 | perform_access_checks (VEC (deferred_access_check,gc)* checks) |
6b648482 | 266 | { |
d6b418fa SM |
267 | int i; |
268 | deferred_access_check *chk; | |
269 | ||
270 | if (!checks) | |
271 | return; | |
272 | ||
273 | for (i = 0 ; VEC_iterate (deferred_access_check, checks, i, chk) ; ++i) | |
274 | enforce_access (chk->binfo, chk->decl, chk->diag_decl); | |
6b648482 MM |
275 | } |
276 | ||
25903d03 KL |
277 | /* Perform the deferred access checks. |
278 | ||
279 | After performing the checks, we still have to keep the list | |
280 | `deferred_access_stack->deferred_access_checks' since we may want | |
281 | to check access for them again later in a different context. | |
282 | For example: | |
283 | ||
284 | class A { | |
285 | typedef int X; | |
286 | static X a; | |
287 | }; | |
288 | A::X A::a, x; // No error for `A::a', error for `x' | |
289 | ||
290 | We have to perform deferred access of `A::X', first with `A::a', | |
291 | next with `x'. */ | |
cf22909c | 292 | |
572c2b17 AP |
293 | void |
294 | perform_deferred_access_checks (void) | |
cf22909c | 295 | { |
6b648482 | 296 | perform_access_checks (get_deferred_access_checks ()); |
cf22909c KL |
297 | } |
298 | ||
299 | /* Defer checking the accessibility of DECL, when looked up in | |
02022f3a | 300 | BINFO. DIAG_DECL is the declaration to use to print diagnostics. */ |
cf22909c | 301 | |
572c2b17 | 302 | void |
02022f3a | 303 | perform_or_defer_access_check (tree binfo, tree decl, tree diag_decl) |
cf22909c | 304 | { |
d6b418fa | 305 | int i; |
3e1f1ba5 | 306 | deferred_access *ptr; |
d6b418fa SM |
307 | deferred_access_check *chk; |
308 | deferred_access_check *new_access; | |
309 | ||
cf22909c | 310 | |
3e1f1ba5 NS |
311 | /* Exit if we are in a context that no access checking is performed. |
312 | */ | |
313 | if (deferred_access_no_check) | |
0f2a66c9 | 314 | return; |
c8094d83 | 315 | |
50bc768d | 316 | gcc_assert (TREE_CODE (binfo) == TREE_BINFO); |
0f2a66c9 | 317 | |
3e1f1ba5 | 318 | ptr = VEC_last (deferred_access, deferred_access_stack); |
c8094d83 | 319 | |
cf22909c | 320 | /* If we are not supposed to defer access checks, just check now. */ |
3e1f1ba5 | 321 | if (ptr->deferring_access_checks_kind == dk_no_deferred) |
cf22909c | 322 | { |
02022f3a | 323 | enforce_access (binfo, decl, diag_decl); |
cf22909c KL |
324 | return; |
325 | } | |
c8094d83 | 326 | |
cf22909c | 327 | /* See if we are already going to perform this check. */ |
d6b418fa SM |
328 | for (i = 0 ; |
329 | VEC_iterate (deferred_access_check, | |
330 | ptr->deferred_access_checks, i, chk) ; | |
331 | ++i) | |
332 | { | |
333 | if (chk->decl == decl && chk->binfo == binfo && | |
334 | chk->diag_decl == diag_decl) | |
335 | { | |
336 | return; | |
337 | } | |
338 | } | |
cf22909c | 339 | /* If not, record the check. */ |
d6b418fa SM |
340 | new_access = |
341 | VEC_safe_push (deferred_access_check, gc, | |
342 | ptr->deferred_access_checks, 0); | |
343 | new_access->binfo = binfo; | |
344 | new_access->decl = decl; | |
345 | new_access->diag_decl = diag_decl; | |
cf22909c KL |
346 | } |
347 | ||
838dfd8a | 348 | /* Returns nonzero if the current statement is a full expression, |
f2c5f623 BC |
349 | i.e. temporaries created during that statement should be destroyed |
350 | at the end of the statement. */ | |
35b1567d | 351 | |
f2c5f623 | 352 | int |
3a978d72 | 353 | stmts_are_full_exprs_p (void) |
f2c5f623 | 354 | { |
ae499cce MM |
355 | return current_stmt_tree ()->stmts_are_full_exprs_p; |
356 | } | |
357 | ||
ed3d0b14 ILT |
358 | /* T is a statement. Add it to the statement-tree. This is the C++ |
359 | version. The C/ObjC frontends have a slightly different version of | |
360 | this function. */ | |
361 | ||
362 | tree | |
363 | add_stmt (tree t) | |
364 | { | |
365 | enum tree_code code = TREE_CODE (t); | |
366 | ||
367 | if (EXPR_P (t) && code != LABEL_EXPR) | |
368 | { | |
369 | if (!EXPR_HAS_LOCATION (t)) | |
370 | SET_EXPR_LOCATION (t, input_location); | |
371 | ||
372 | /* When we expand a statement-tree, we must know whether or not the | |
373 | statements are full-expressions. We record that fact here. */ | |
374 | STMT_IS_FULL_EXPR_P (t) = stmts_are_full_exprs_p (); | |
375 | } | |
376 | ||
377 | /* Add T to the statement-tree. Non-side-effect statements need to be | |
378 | recorded during statement expressions. */ | |
379 | append_to_statement_list_force (t, &cur_stmt_list); | |
380 | ||
381 | return t; | |
382 | } | |
383 | ||
ae499cce MM |
384 | /* Returns the stmt_tree (if any) to which statements are currently |
385 | being added. If there is no active statement-tree, NULL is | |
386 | returned. */ | |
387 | ||
388 | stmt_tree | |
3a978d72 | 389 | current_stmt_tree (void) |
ae499cce | 390 | { |
c8094d83 MS |
391 | return (cfun |
392 | ? &cfun->language->base.x_stmt_tree | |
ae499cce | 393 | : &scope_chain->x_stmt_tree); |
f2c5f623 | 394 | } |
35b1567d | 395 | |
543a0daa RH |
396 | /* If statements are full expressions, wrap STMT in a CLEANUP_POINT_EXPR. */ |
397 | ||
398 | static tree | |
399 | maybe_cleanup_point_expr (tree expr) | |
400 | { | |
401 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
0ad28dde | 402 | expr = fold_build_cleanup_point_expr (TREE_TYPE (expr), expr); |
543a0daa RH |
403 | return expr; |
404 | } | |
405 | ||
0ad28dde | 406 | /* Like maybe_cleanup_point_expr except have the type of the new expression be |
22423a1f KH |
407 | void so we don't need to create a temporary variable to hold the inner |
408 | expression. The reason why we do this is because the original type might be | |
409 | an aggregate and we cannot create a temporary variable for that type. */ | |
0ad28dde AP |
410 | |
411 | static tree | |
412 | maybe_cleanup_point_expr_void (tree expr) | |
413 | { | |
414 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
415 | expr = fold_build_cleanup_point_expr (void_type_node, expr); | |
416 | return expr; | |
417 | } | |
418 | ||
419 | ||
420 | ||
543a0daa RH |
421 | /* Create a declaration statement for the declaration given by the DECL. */ |
422 | ||
423 | void | |
350fae66 | 424 | add_decl_expr (tree decl) |
543a0daa | 425 | { |
350fae66 | 426 | tree r = build_stmt (DECL_EXPR, decl); |
b187901e AP |
427 | if (DECL_INITIAL (decl) |
428 | || (DECL_SIZE (decl) && TREE_SIDE_EFFECTS (DECL_SIZE (decl)))) | |
0ad28dde | 429 | r = maybe_cleanup_point_expr_void (r); |
543a0daa RH |
430 | add_stmt (r); |
431 | } | |
432 | ||
f2c5f623 BC |
433 | /* Nonzero if TYPE is an anonymous union or struct type. We have to use a |
434 | flag for this because "A union for which objects or pointers are | |
435 | declared is not an anonymous union" [class.union]. */ | |
35b1567d | 436 | |
f2c5f623 | 437 | int |
58f9752a | 438 | anon_aggr_type_p (const_tree node) |
35b1567d | 439 | { |
e2500fed | 440 | return ANON_AGGR_TYPE_P (node); |
35b1567d BC |
441 | } |
442 | ||
f2c5f623 | 443 | /* Finish a scope. */ |
35b1567d | 444 | |
20aff0b3 | 445 | tree |
325c3691 | 446 | do_poplevel (tree stmt_list) |
35b1567d | 447 | { |
325c3691 | 448 | tree block = NULL; |
35b1567d | 449 | |
f2c5f623 | 450 | if (stmts_are_full_exprs_p ()) |
325c3691 | 451 | block = poplevel (kept_level_p (), 1, 0); |
f2c5f623 | 452 | |
325c3691 | 453 | stmt_list = pop_stmt_list (stmt_list); |
c8094d83 | 454 | |
325c3691 RH |
455 | if (!processing_template_decl) |
456 | { | |
457 | stmt_list = c_build_bind_expr (block, stmt_list); | |
458 | /* ??? See c_end_compound_stmt re statement expressions. */ | |
35b1567d BC |
459 | } |
460 | ||
325c3691 | 461 | return stmt_list; |
35b1567d BC |
462 | } |
463 | ||
c8094d83 | 464 | /* Begin a new scope. */ |
35b1567d | 465 | |
325c3691 | 466 | static tree |
92bc1323 | 467 | do_pushlevel (scope_kind sk) |
35b1567d | 468 | { |
325c3691 | 469 | tree ret = push_stmt_list (); |
f2c5f623 | 470 | if (stmts_are_full_exprs_p ()) |
325c3691 RH |
471 | begin_scope (sk, NULL); |
472 | return ret; | |
473 | } | |
5a508662 RH |
474 | |
475 | /* Queue a cleanup. CLEANUP is an expression/statement to be executed | |
476 | when the current scope is exited. EH_ONLY is true when this is not | |
477 | meant to apply to normal control flow transfer. */ | |
478 | ||
479 | void | |
480 | push_cleanup (tree decl, tree cleanup, bool eh_only) | |
481 | { | |
482 | tree stmt = build_stmt (CLEANUP_STMT, NULL, cleanup, decl); | |
483 | CLEANUP_EH_ONLY (stmt) = eh_only; | |
484 | add_stmt (stmt); | |
485 | CLEANUP_BODY (stmt) = push_stmt_list (); | |
486 | } | |
325c3691 | 487 | |
caf2523d RH |
488 | /* Begin a conditional that might contain a declaration. When generating |
489 | normal code, we want the declaration to appear before the statement | |
490 | containing the conditional. When generating template code, we want the | |
350fae66 | 491 | conditional to be rendered as the raw DECL_EXPR. */ |
325c3691 RH |
492 | |
493 | static void | |
caf2523d | 494 | begin_cond (tree *cond_p) |
325c3691 | 495 | { |
caf2523d RH |
496 | if (processing_template_decl) |
497 | *cond_p = push_stmt_list (); | |
498 | } | |
499 | ||
500 | /* Finish such a conditional. */ | |
501 | ||
502 | static void | |
503 | finish_cond (tree *cond_p, tree expr) | |
504 | { | |
505 | if (processing_template_decl) | |
35b1567d | 506 | { |
caf2523d | 507 | tree cond = pop_stmt_list (*cond_p); |
350fae66 | 508 | if (TREE_CODE (cond) == DECL_EXPR) |
caf2523d | 509 | expr = cond; |
5d80a306 | 510 | |
7b3e2d46 | 511 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 512 | *cond_p = error_mark_node; |
35b1567d | 513 | } |
caf2523d | 514 | *cond_p = expr; |
35b1567d BC |
515 | } |
516 | ||
325c3691 RH |
517 | /* If *COND_P specifies a conditional with a declaration, transform the |
518 | loop such that | |
0cbd7506 MS |
519 | while (A x = 42) { } |
520 | for (; A x = 42;) { } | |
325c3691 | 521 | becomes |
0cbd7506 MS |
522 | while (true) { A x = 42; if (!x) break; } |
523 | for (;;) { A x = 42; if (!x) break; } | |
caf2523d RH |
524 | The statement list for BODY will be empty if the conditional did |
525 | not declare anything. */ | |
c8094d83 | 526 | |
325c3691 | 527 | static void |
caf2523d | 528 | simplify_loop_decl_cond (tree *cond_p, tree body) |
325c3691 | 529 | { |
caf2523d | 530 | tree cond, if_stmt; |
325c3691 | 531 | |
caf2523d RH |
532 | if (!TREE_SIDE_EFFECTS (body)) |
533 | return; | |
325c3691 | 534 | |
caf2523d RH |
535 | cond = *cond_p; |
536 | *cond_p = boolean_true_node; | |
c8094d83 | 537 | |
caf2523d | 538 | if_stmt = begin_if_stmt (); |
5ade1ed2 | 539 | cond = cp_build_unary_op (TRUTH_NOT_EXPR, cond, 0, tf_warning_or_error); |
caf2523d RH |
540 | finish_if_stmt_cond (cond, if_stmt); |
541 | finish_break_stmt (); | |
542 | finish_then_clause (if_stmt); | |
543 | finish_if_stmt (if_stmt); | |
544 | } | |
325c3691 | 545 | |
35b1567d BC |
546 | /* Finish a goto-statement. */ |
547 | ||
3e4d04a1 | 548 | tree |
3a978d72 | 549 | finish_goto_stmt (tree destination) |
35b1567d BC |
550 | { |
551 | if (TREE_CODE (destination) == IDENTIFIER_NODE) | |
552 | destination = lookup_label (destination); | |
553 | ||
554 | /* We warn about unused labels with -Wunused. That means we have to | |
555 | mark the used labels as used. */ | |
556 | if (TREE_CODE (destination) == LABEL_DECL) | |
557 | TREE_USED (destination) = 1; | |
fc2b8477 MM |
558 | else |
559 | { | |
560 | /* The DESTINATION is being used as an rvalue. */ | |
561 | if (!processing_template_decl) | |
562 | destination = decay_conversion (destination); | |
563 | /* We don't inline calls to functions with computed gotos. | |
564 | Those functions are typically up to some funny business, | |
565 | and may be depending on the labels being at particular | |
566 | addresses, or some such. */ | |
567 | DECL_UNINLINABLE (current_function_decl) = 1; | |
568 | } | |
c8094d83 | 569 | |
35b1567d BC |
570 | check_goto (destination); |
571 | ||
9e14e18f | 572 | return add_stmt (build_stmt (GOTO_EXPR, destination)); |
35b1567d BC |
573 | } |
574 | ||
ed5511d9 MM |
575 | /* COND is the condition-expression for an if, while, etc., |
576 | statement. Convert it to a boolean value, if appropriate. */ | |
577 | ||
8ce33230 | 578 | static tree |
3a978d72 | 579 | maybe_convert_cond (tree cond) |
ed5511d9 MM |
580 | { |
581 | /* Empty conditions remain empty. */ | |
582 | if (!cond) | |
583 | return NULL_TREE; | |
584 | ||
585 | /* Wait until we instantiate templates before doing conversion. */ | |
586 | if (processing_template_decl) | |
587 | return cond; | |
588 | ||
589 | /* Do the conversion. */ | |
590 | cond = convert_from_reference (cond); | |
fbc8d2d3 ILT |
591 | |
592 | if (TREE_CODE (cond) == MODIFY_EXPR | |
593 | && !TREE_NO_WARNING (cond) | |
594 | && warn_parentheses) | |
595 | { | |
596 | warning (OPT_Wparentheses, | |
597 | "suggest parentheses around assignment used as truth value"); | |
598 | TREE_NO_WARNING (cond) = 1; | |
599 | } | |
600 | ||
ed5511d9 MM |
601 | return condition_conversion (cond); |
602 | } | |
603 | ||
9bfadf57 | 604 | /* Finish an expression-statement, whose EXPRESSION is as indicated. */ |
a7e4cfa0 | 605 | |
3e4d04a1 | 606 | tree |
3a978d72 | 607 | finish_expr_stmt (tree expr) |
ad321293 | 608 | { |
3e4d04a1 RH |
609 | tree r = NULL_TREE; |
610 | ||
ce4a0391 | 611 | if (expr != NULL_TREE) |
ad321293 | 612 | { |
a5bcc582 | 613 | if (!processing_template_decl) |
3a5b9284 RH |
614 | { |
615 | if (warn_sequence_point) | |
616 | verify_sequence_points (expr); | |
5ade1ed2 | 617 | expr = convert_to_void (expr, "statement", tf_warning_or_error); |
3a5b9284 | 618 | } |
47d4c811 | 619 | else if (!type_dependent_expression_p (expr)) |
5ade1ed2 DG |
620 | convert_to_void (build_non_dependent_expr (expr), "statement", |
621 | tf_warning_or_error); | |
325c3691 | 622 | |
7b3e2d46 | 623 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 624 | expr = error_mark_node; |
5d80a306 | 625 | |
325c3691 | 626 | /* Simplification of inner statement expressions, compound exprs, |
ca5b80f3 | 627 | etc can result in us already having an EXPR_STMT. */ |
543a0daa RH |
628 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) |
629 | { | |
630 | if (TREE_CODE (expr) != EXPR_STMT) | |
631 | expr = build_stmt (EXPR_STMT, expr); | |
0ad28dde | 632 | expr = maybe_cleanup_point_expr_void (expr); |
543a0daa RH |
633 | } |
634 | ||
325c3691 | 635 | r = add_stmt (expr); |
35b1567d | 636 | } |
364460b6 | 637 | |
35b1567d | 638 | finish_stmt (); |
558475f0 | 639 | |
3e4d04a1 | 640 | return r; |
35b1567d BC |
641 | } |
642 | ||
35b1567d | 643 | |
ad321293 MM |
644 | /* Begin an if-statement. Returns a newly created IF_STMT if |
645 | appropriate. */ | |
646 | ||
647 | tree | |
3a978d72 | 648 | begin_if_stmt (void) |
ad321293 | 649 | { |
325c3691 RH |
650 | tree r, scope; |
651 | scope = do_pushlevel (sk_block); | |
0dfdeca6 | 652 | r = build_stmt (IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 | 653 | TREE_CHAIN (r) = scope; |
caf2523d | 654 | begin_cond (&IF_COND (r)); |
ad321293 MM |
655 | return r; |
656 | } | |
657 | ||
658 | /* Process the COND of an if-statement, which may be given by | |
659 | IF_STMT. */ | |
660 | ||
c8094d83 | 661 | void |
3a978d72 | 662 | finish_if_stmt_cond (tree cond, tree if_stmt) |
ad321293 | 663 | { |
caf2523d RH |
664 | finish_cond (&IF_COND (if_stmt), maybe_convert_cond (cond)); |
665 | add_stmt (if_stmt); | |
325c3691 | 666 | THEN_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
667 | } |
668 | ||
669 | /* Finish the then-clause of an if-statement, which may be given by | |
670 | IF_STMT. */ | |
671 | ||
672 | tree | |
3a978d72 | 673 | finish_then_clause (tree if_stmt) |
ad321293 | 674 | { |
325c3691 | 675 | THEN_CLAUSE (if_stmt) = pop_stmt_list (THEN_CLAUSE (if_stmt)); |
35b1567d | 676 | return if_stmt; |
ad321293 MM |
677 | } |
678 | ||
679 | /* Begin the else-clause of an if-statement. */ | |
680 | ||
325c3691 RH |
681 | void |
682 | begin_else_clause (tree if_stmt) | |
ad321293 | 683 | { |
325c3691 | 684 | ELSE_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
685 | } |
686 | ||
687 | /* Finish the else-clause of an if-statement, which may be given by | |
688 | IF_STMT. */ | |
689 | ||
690 | void | |
3a978d72 | 691 | finish_else_clause (tree if_stmt) |
ad321293 | 692 | { |
325c3691 | 693 | ELSE_CLAUSE (if_stmt) = pop_stmt_list (ELSE_CLAUSE (if_stmt)); |
ad321293 MM |
694 | } |
695 | ||
dfbb4f34 | 696 | /* Finish an if-statement. */ |
ad321293 | 697 | |
c8094d83 | 698 | void |
325c3691 | 699 | finish_if_stmt (tree if_stmt) |
ad321293 | 700 | { |
325c3691 RH |
701 | tree scope = TREE_CHAIN (if_stmt); |
702 | TREE_CHAIN (if_stmt) = NULL; | |
703 | add_stmt (do_poplevel (scope)); | |
ad321293 | 704 | finish_stmt (); |
62e00e94 | 705 | empty_if_body_warning (THEN_CLAUSE (if_stmt), ELSE_CLAUSE (if_stmt)); |
35b1567d BC |
706 | } |
707 | ||
ad321293 MM |
708 | /* Begin a while-statement. Returns a newly created WHILE_STMT if |
709 | appropriate. */ | |
710 | ||
711 | tree | |
3a978d72 | 712 | begin_while_stmt (void) |
ad321293 MM |
713 | { |
714 | tree r; | |
0dfdeca6 | 715 | r = build_stmt (WHILE_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 716 | add_stmt (r); |
325c3691 | 717 | WHILE_BODY (r) = do_pushlevel (sk_block); |
caf2523d | 718 | begin_cond (&WHILE_COND (r)); |
ad321293 MM |
719 | return r; |
720 | } | |
721 | ||
27d26ee7 | 722 | /* Process the COND of a while-statement, which may be given by |
ad321293 MM |
723 | WHILE_STMT. */ |
724 | ||
c8094d83 | 725 | void |
3a978d72 | 726 | finish_while_stmt_cond (tree cond, tree while_stmt) |
ad321293 | 727 | { |
caf2523d RH |
728 | finish_cond (&WHILE_COND (while_stmt), maybe_convert_cond (cond)); |
729 | simplify_loop_decl_cond (&WHILE_COND (while_stmt), WHILE_BODY (while_stmt)); | |
ad321293 MM |
730 | } |
731 | ||
732 | /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
733 | ||
c8094d83 | 734 | void |
3a978d72 | 735 | finish_while_stmt (tree while_stmt) |
ad321293 | 736 | { |
325c3691 | 737 | WHILE_BODY (while_stmt) = do_poplevel (WHILE_BODY (while_stmt)); |
ad321293 MM |
738 | finish_stmt (); |
739 | } | |
740 | ||
741 | /* Begin a do-statement. Returns a newly created DO_STMT if | |
742 | appropriate. */ | |
743 | ||
744 | tree | |
3a978d72 | 745 | begin_do_stmt (void) |
ad321293 | 746 | { |
0dfdeca6 | 747 | tree r = build_stmt (DO_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 748 | add_stmt (r); |
325c3691 | 749 | DO_BODY (r) = push_stmt_list (); |
35b1567d | 750 | return r; |
ad321293 MM |
751 | } |
752 | ||
753 | /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
754 | ||
755 | void | |
3a978d72 | 756 | finish_do_body (tree do_stmt) |
ad321293 | 757 | { |
62e00e94 DM |
758 | tree body = DO_BODY (do_stmt) = pop_stmt_list (DO_BODY (do_stmt)); |
759 | ||
760 | if (TREE_CODE (body) == STATEMENT_LIST && STATEMENT_LIST_TAIL (body)) | |
761 | body = STATEMENT_LIST_TAIL (body)->stmt; | |
762 | ||
763 | if (IS_EMPTY_STMT (body)) | |
764 | warning (OPT_Wempty_body, | |
765 | "suggest explicit braces around empty body in %<do%> statement"); | |
ad321293 MM |
766 | } |
767 | ||
768 | /* Finish a do-statement, which may be given by DO_STMT, and whose | |
769 | COND is as indicated. */ | |
770 | ||
771 | void | |
3a978d72 | 772 | finish_do_stmt (tree cond, tree do_stmt) |
ad321293 | 773 | { |
ed5511d9 | 774 | cond = maybe_convert_cond (cond); |
35b1567d BC |
775 | DO_COND (do_stmt) = cond; |
776 | finish_stmt (); | |
777 | } | |
ed5511d9 | 778 | |
ad321293 MM |
779 | /* Finish a return-statement. The EXPRESSION returned, if any, is as |
780 | indicated. */ | |
781 | ||
3e4d04a1 | 782 | tree |
3a978d72 | 783 | finish_return_stmt (tree expr) |
ad321293 | 784 | { |
3e4d04a1 | 785 | tree r; |
0c9b182b | 786 | bool no_warning; |
3e4d04a1 | 787 | |
0c9b182b | 788 | expr = check_return_expr (expr, &no_warning); |
1799e5d5 RH |
789 | |
790 | if (flag_openmp && !check_omp_return ()) | |
791 | return error_mark_node; | |
35b1567d | 792 | if (!processing_template_decl) |
efee38a9 | 793 | { |
44d10c10 | 794 | if (DECL_DESTRUCTOR_P (current_function_decl) |
c8094d83 | 795 | || (DECL_CONSTRUCTOR_P (current_function_decl) |
44d10c10 | 796 | && targetm.cxx.cdtor_returns_this ())) |
efee38a9 MM |
797 | { |
798 | /* Similarly, all destructors must run destructors for | |
799 | base-classes before returning. So, all returns in a | |
dfbb4f34 | 800 | destructor get sent to the DTOR_LABEL; finish_function emits |
efee38a9 | 801 | code to return a value there. */ |
44d10c10 | 802 | return finish_goto_stmt (cdtor_label); |
efee38a9 MM |
803 | } |
804 | } | |
543a0daa | 805 | |
5088b058 | 806 | r = build_stmt (RETURN_EXPR, expr); |
0c9b182b | 807 | TREE_NO_WARNING (r) |= no_warning; |
0ad28dde | 808 | r = maybe_cleanup_point_expr_void (r); |
543a0daa | 809 | r = add_stmt (r); |
35b1567d | 810 | finish_stmt (); |
3e4d04a1 RH |
811 | |
812 | return r; | |
35b1567d | 813 | } |
efee38a9 | 814 | |
ad321293 MM |
815 | /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */ |
816 | ||
817 | tree | |
3a978d72 | 818 | begin_for_stmt (void) |
ad321293 MM |
819 | { |
820 | tree r; | |
821 | ||
c8094d83 | 822 | r = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE, |
0dfdeca6 | 823 | NULL_TREE, NULL_TREE); |
325c3691 RH |
824 | |
825 | if (flag_new_for_scope > 0) | |
826 | TREE_CHAIN (r) = do_pushlevel (sk_for); | |
ad321293 | 827 | |
894ca2c9 RH |
828 | if (processing_template_decl) |
829 | FOR_INIT_STMT (r) = push_stmt_list (); | |
830 | ||
ad321293 MM |
831 | return r; |
832 | } | |
833 | ||
834 | /* Finish the for-init-statement of a for-statement, which may be | |
835 | given by FOR_STMT. */ | |
836 | ||
837 | void | |
3a978d72 | 838 | finish_for_init_stmt (tree for_stmt) |
ad321293 | 839 | { |
894ca2c9 RH |
840 | if (processing_template_decl) |
841 | FOR_INIT_STMT (for_stmt) = pop_stmt_list (FOR_INIT_STMT (for_stmt)); | |
325c3691 RH |
842 | add_stmt (for_stmt); |
843 | FOR_BODY (for_stmt) = do_pushlevel (sk_block); | |
caf2523d | 844 | begin_cond (&FOR_COND (for_stmt)); |
ad321293 MM |
845 | } |
846 | ||
847 | /* Finish the COND of a for-statement, which may be given by | |
848 | FOR_STMT. */ | |
849 | ||
850 | void | |
3a978d72 | 851 | finish_for_cond (tree cond, tree for_stmt) |
ad321293 | 852 | { |
caf2523d RH |
853 | finish_cond (&FOR_COND (for_stmt), maybe_convert_cond (cond)); |
854 | simplify_loop_decl_cond (&FOR_COND (for_stmt), FOR_BODY (for_stmt)); | |
ad321293 MM |
855 | } |
856 | ||
857 | /* Finish the increment-EXPRESSION in a for-statement, which may be | |
858 | given by FOR_STMT. */ | |
859 | ||
860 | void | |
3a978d72 | 861 | finish_for_expr (tree expr, tree for_stmt) |
ad321293 | 862 | { |
543a0daa RH |
863 | if (!expr) |
864 | return; | |
6f69173e MM |
865 | /* If EXPR is an overloaded function, issue an error; there is no |
866 | context available to use to perform overload resolution. */ | |
543a0daa | 867 | if (type_unknown_p (expr)) |
6f69173e MM |
868 | { |
869 | cxx_incomplete_type_error (expr, TREE_TYPE (expr)); | |
870 | expr = error_mark_node; | |
871 | } | |
bcd46a7c AP |
872 | if (!processing_template_decl) |
873 | { | |
874 | if (warn_sequence_point) | |
0cbd7506 | 875 | verify_sequence_points (expr); |
5ade1ed2 DG |
876 | expr = convert_to_void (expr, "3rd expression in for", |
877 | tf_warning_or_error); | |
bcd46a7c AP |
878 | } |
879 | else if (!type_dependent_expression_p (expr)) | |
5ade1ed2 DG |
880 | convert_to_void (build_non_dependent_expr (expr), "3rd expression in for", |
881 | tf_warning_or_error); | |
0ad28dde | 882 | expr = maybe_cleanup_point_expr_void (expr); |
7b3e2d46 | 883 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 884 | expr = error_mark_node; |
35b1567d | 885 | FOR_EXPR (for_stmt) = expr; |
ad321293 MM |
886 | } |
887 | ||
888 | /* Finish the body of a for-statement, which may be given by | |
889 | FOR_STMT. The increment-EXPR for the loop must be | |
890 | provided. */ | |
891 | ||
892 | void | |
3a978d72 | 893 | finish_for_stmt (tree for_stmt) |
ad321293 | 894 | { |
325c3691 RH |
895 | FOR_BODY (for_stmt) = do_poplevel (FOR_BODY (for_stmt)); |
896 | ||
ad321293 | 897 | /* Pop the scope for the body of the loop. */ |
325c3691 RH |
898 | if (flag_new_for_scope > 0) |
899 | { | |
900 | tree scope = TREE_CHAIN (for_stmt); | |
901 | TREE_CHAIN (for_stmt) = NULL; | |
902 | add_stmt (do_poplevel (scope)); | |
903 | } | |
904 | ||
c8094d83 | 905 | finish_stmt (); |
ad321293 MM |
906 | } |
907 | ||
908 | /* Finish a break-statement. */ | |
909 | ||
3e4d04a1 | 910 | tree |
3a978d72 | 911 | finish_break_stmt (void) |
ad321293 | 912 | { |
fbc315db | 913 | return add_stmt (build_stmt (BREAK_STMT)); |
35b1567d BC |
914 | } |
915 | ||
ad321293 MM |
916 | /* Finish a continue-statement. */ |
917 | ||
3e4d04a1 | 918 | tree |
3a978d72 | 919 | finish_continue_stmt (void) |
ad321293 | 920 | { |
fbc315db | 921 | return add_stmt (build_stmt (CONTINUE_STMT)); |
ad321293 MM |
922 | } |
923 | ||
35b1567d BC |
924 | /* Begin a switch-statement. Returns a new SWITCH_STMT if |
925 | appropriate. */ | |
926 | ||
927 | tree | |
3a978d72 | 928 | begin_switch_stmt (void) |
35b1567d | 929 | { |
325c3691 RH |
930 | tree r, scope; |
931 | ||
6f9fdf4d | 932 | r = build_stmt (SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 RH |
933 | |
934 | scope = do_pushlevel (sk_block); | |
935 | TREE_CHAIN (r) = scope; | |
ebaae582 | 936 | begin_cond (&SWITCH_STMT_COND (r)); |
325c3691 | 937 | |
527f0080 | 938 | return r; |
ad321293 MM |
939 | } |
940 | ||
527f0080 | 941 | /* Finish the cond of a switch-statement. */ |
ad321293 | 942 | |
527f0080 | 943 | void |
3a978d72 | 944 | finish_switch_cond (tree cond, tree switch_stmt) |
ad321293 | 945 | { |
6f9fdf4d | 946 | tree orig_type = NULL; |
35b1567d | 947 | if (!processing_template_decl) |
373eb3b3 | 948 | { |
56cb9733 MM |
949 | tree index; |
950 | ||
35b1567d | 951 | /* Convert the condition to an integer or enumeration type. */ |
b746c5dc | 952 | cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); |
35b1567d | 953 | if (cond == NULL_TREE) |
373eb3b3 | 954 | { |
35b1567d BC |
955 | error ("switch quantity not an integer"); |
956 | cond = error_mark_node; | |
957 | } | |
6f9fdf4d | 958 | orig_type = TREE_TYPE (cond); |
35b1567d BC |
959 | if (cond != error_mark_node) |
960 | { | |
0a72704b MM |
961 | /* [stmt.switch] |
962 | ||
963 | Integral promotions are performed. */ | |
964 | cond = perform_integral_promotions (cond); | |
543a0daa | 965 | cond = maybe_cleanup_point_expr (cond); |
373eb3b3 | 966 | } |
56cb9733 | 967 | |
25c8b645 JJ |
968 | if (cond != error_mark_node) |
969 | { | |
970 | index = get_unwidened (cond, NULL_TREE); | |
971 | /* We can't strip a conversion from a signed type to an unsigned, | |
972 | because if we did, int_fits_type_p would do the wrong thing | |
973 | when checking case values for being in range, | |
974 | and it's too hard to do the right thing. */ | |
8df83eae RK |
975 | if (TYPE_UNSIGNED (TREE_TYPE (cond)) |
976 | == TYPE_UNSIGNED (TREE_TYPE (index))) | |
25c8b645 JJ |
977 | cond = index; |
978 | } | |
ad321293 | 979 | } |
7b3e2d46 | 980 | if (check_for_bare_parameter_packs (cond)) |
4439d02f | 981 | cond = error_mark_node; |
ebaae582 SB |
982 | finish_cond (&SWITCH_STMT_COND (switch_stmt), cond); |
983 | SWITCH_STMT_TYPE (switch_stmt) = orig_type; | |
caf2523d | 984 | add_stmt (switch_stmt); |
56cb9733 | 985 | push_switch (switch_stmt); |
ebaae582 | 986 | SWITCH_STMT_BODY (switch_stmt) = push_stmt_list (); |
ad321293 MM |
987 | } |
988 | ||
989 | /* Finish the body of a switch-statement, which may be given by | |
990 | SWITCH_STMT. The COND to switch on is indicated. */ | |
991 | ||
992 | void | |
3a978d72 | 993 | finish_switch_stmt (tree switch_stmt) |
ad321293 | 994 | { |
325c3691 RH |
995 | tree scope; |
996 | ||
ebaae582 SB |
997 | SWITCH_STMT_BODY (switch_stmt) = |
998 | pop_stmt_list (SWITCH_STMT_BODY (switch_stmt)); | |
c8094d83 | 999 | pop_switch (); |
ad321293 | 1000 | finish_stmt (); |
325c3691 RH |
1001 | |
1002 | scope = TREE_CHAIN (switch_stmt); | |
1003 | TREE_CHAIN (switch_stmt) = NULL; | |
1004 | add_stmt (do_poplevel (scope)); | |
ad321293 MM |
1005 | } |
1006 | ||
ad321293 MM |
1007 | /* Begin a try-block. Returns a newly-created TRY_BLOCK if |
1008 | appropriate. */ | |
1009 | ||
1010 | tree | |
3a978d72 | 1011 | begin_try_block (void) |
ad321293 | 1012 | { |
0dfdeca6 | 1013 | tree r = build_stmt (TRY_BLOCK, NULL_TREE, NULL_TREE); |
ae499cce | 1014 | add_stmt (r); |
325c3691 | 1015 | TRY_STMTS (r) = push_stmt_list (); |
35b1567d | 1016 | return r; |
ad321293 MM |
1017 | } |
1018 | ||
eaf6fb90 MM |
1019 | /* Likewise, for a function-try-block. The block returned in |
1020 | *COMPOUND_STMT is an artificial outer scope, containing the | |
1021 | function-try-block. */ | |
0dde4175 JM |
1022 | |
1023 | tree | |
eaf6fb90 | 1024 | begin_function_try_block (tree *compound_stmt) |
0dde4175 | 1025 | { |
eaf6fb90 MM |
1026 | tree r; |
1027 | /* This outer scope does not exist in the C++ standard, but we need | |
1028 | a place to put __FUNCTION__ and similar variables. */ | |
1029 | *compound_stmt = begin_compound_stmt (0); | |
1030 | r = begin_try_block (); | |
35b1567d | 1031 | FN_TRY_BLOCK_P (r) = 1; |
35b1567d | 1032 | return r; |
0dde4175 JM |
1033 | } |
1034 | ||
ad321293 MM |
1035 | /* Finish a try-block, which may be given by TRY_BLOCK. */ |
1036 | ||
1037 | void | |
3a978d72 | 1038 | finish_try_block (tree try_block) |
ad321293 | 1039 | { |
325c3691 RH |
1040 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
1041 | TRY_HANDLERS (try_block) = push_stmt_list (); | |
ad321293 MM |
1042 | } |
1043 | ||
efa8eda3 MM |
1044 | /* Finish the body of a cleanup try-block, which may be given by |
1045 | TRY_BLOCK. */ | |
1046 | ||
62409b39 | 1047 | void |
3a978d72 | 1048 | finish_cleanup_try_block (tree try_block) |
62409b39 | 1049 | { |
325c3691 | 1050 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
62409b39 MM |
1051 | } |
1052 | ||
f1dedc31 MM |
1053 | /* Finish an implicitly generated try-block, with a cleanup is given |
1054 | by CLEANUP. */ | |
1055 | ||
1056 | void | |
3a978d72 | 1057 | finish_cleanup (tree cleanup, tree try_block) |
f1dedc31 | 1058 | { |
35b1567d BC |
1059 | TRY_HANDLERS (try_block) = cleanup; |
1060 | CLEANUP_P (try_block) = 1; | |
f1dedc31 MM |
1061 | } |
1062 | ||
0dde4175 JM |
1063 | /* Likewise, for a function-try-block. */ |
1064 | ||
1065 | void | |
3a978d72 | 1066 | finish_function_try_block (tree try_block) |
0dde4175 | 1067 | { |
325c3691 RH |
1068 | finish_try_block (try_block); |
1069 | /* FIXME : something queer about CTOR_INITIALIZER somehow following | |
1070 | the try block, but moving it inside. */ | |
b35d4555 | 1071 | in_function_try_handler = 1; |
0dde4175 JM |
1072 | } |
1073 | ||
ad321293 MM |
1074 | /* Finish a handler-sequence for a try-block, which may be given by |
1075 | TRY_BLOCK. */ | |
1076 | ||
1077 | void | |
3a978d72 | 1078 | finish_handler_sequence (tree try_block) |
ad321293 | 1079 | { |
325c3691 | 1080 | TRY_HANDLERS (try_block) = pop_stmt_list (TRY_HANDLERS (try_block)); |
35b1567d | 1081 | check_handlers (TRY_HANDLERS (try_block)); |
ad321293 MM |
1082 | } |
1083 | ||
eaf6fb90 MM |
1084 | /* Finish the handler-seq for a function-try-block, given by |
1085 | TRY_BLOCK. COMPOUND_STMT is the outer block created by | |
1086 | begin_function_try_block. */ | |
0dde4175 JM |
1087 | |
1088 | void | |
eaf6fb90 | 1089 | finish_function_handler_sequence (tree try_block, tree compound_stmt) |
0dde4175 | 1090 | { |
b35d4555 | 1091 | in_function_try_handler = 0; |
325c3691 | 1092 | finish_handler_sequence (try_block); |
eaf6fb90 | 1093 | finish_compound_stmt (compound_stmt); |
35b1567d BC |
1094 | } |
1095 | ||
ad321293 MM |
1096 | /* Begin a handler. Returns a HANDLER if appropriate. */ |
1097 | ||
1098 | tree | |
3a978d72 | 1099 | begin_handler (void) |
ad321293 MM |
1100 | { |
1101 | tree r; | |
325c3691 | 1102 | |
0dfdeca6 | 1103 | r = build_stmt (HANDLER, NULL_TREE, NULL_TREE); |
ae499cce | 1104 | add_stmt (r); |
325c3691 | 1105 | |
1a6025b4 JM |
1106 | /* Create a binding level for the eh_info and the exception object |
1107 | cleanup. */ | |
325c3691 RH |
1108 | HANDLER_BODY (r) = do_pushlevel (sk_catch); |
1109 | ||
ad321293 MM |
1110 | return r; |
1111 | } | |
1112 | ||
1113 | /* Finish the handler-parameters for a handler, which may be given by | |
b35d4555 MM |
1114 | HANDLER. DECL is the declaration for the catch parameter, or NULL |
1115 | if this is a `catch (...)' clause. */ | |
ad321293 | 1116 | |
1a6025b4 | 1117 | void |
3a978d72 | 1118 | finish_handler_parms (tree decl, tree handler) |
b35d4555 | 1119 | { |
1a6025b4 | 1120 | tree type = NULL_TREE; |
b35d4555 MM |
1121 | if (processing_template_decl) |
1122 | { | |
1123 | if (decl) | |
1124 | { | |
1125 | decl = pushdecl (decl); | |
1126 | decl = push_template_decl (decl); | |
325c3691 | 1127 | HANDLER_PARMS (handler) = decl; |
1a6025b4 | 1128 | type = TREE_TYPE (decl); |
b35d4555 MM |
1129 | } |
1130 | } | |
35b1567d | 1131 | else |
1a6025b4 | 1132 | type = expand_start_catch_block (decl); |
1a6025b4 | 1133 | HANDLER_TYPE (handler) = type; |
b80cfdcd | 1134 | if (!processing_template_decl && type) |
6cad4e17 | 1135 | mark_used (eh_type_info (type)); |
35b1567d BC |
1136 | } |
1137 | ||
1138 | /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
1139 | the return value from the matching call to finish_handler_parms. */ | |
1140 | ||
1141 | void | |
3a978d72 | 1142 | finish_handler (tree handler) |
35b1567d BC |
1143 | { |
1144 | if (!processing_template_decl) | |
1a6025b4 | 1145 | expand_end_catch_block (); |
325c3691 | 1146 | HANDLER_BODY (handler) = do_poplevel (HANDLER_BODY (handler)); |
35b1567d BC |
1147 | } |
1148 | ||
5882f0f3 | 1149 | /* Begin a compound statement. FLAGS contains some bits that control the |
5995ebfb | 1150 | behavior and context. If BCS_NO_SCOPE is set, the compound statement |
5882f0f3 | 1151 | does not define a scope. If BCS_FN_BODY is set, this is the outermost |
c8094d83 | 1152 | block of a function. If BCS_TRY_BLOCK is set, this is the block |
5882f0f3 RH |
1153 | created on behalf of a TRY statement. Returns a token to be passed to |
1154 | finish_compound_stmt. */ | |
ad321293 MM |
1155 | |
1156 | tree | |
325c3691 | 1157 | begin_compound_stmt (unsigned int flags) |
ad321293 | 1158 | { |
325c3691 | 1159 | tree r; |
558475f0 | 1160 | |
325c3691 RH |
1161 | if (flags & BCS_NO_SCOPE) |
1162 | { | |
1163 | r = push_stmt_list (); | |
1164 | STATEMENT_LIST_NO_SCOPE (r) = 1; | |
1165 | ||
1166 | /* Normally, we try hard to keep the BLOCK for a statement-expression. | |
1167 | But, if it's a statement-expression with a scopeless block, there's | |
1168 | nothing to keep, and we don't want to accidentally keep a block | |
c8094d83 | 1169 | *inside* the scopeless block. */ |
325c3691 RH |
1170 | keep_next_level (false); |
1171 | } | |
f1dedc31 | 1172 | else |
325c3691 RH |
1173 | r = do_pushlevel (flags & BCS_TRY_BLOCK ? sk_try : sk_block); |
1174 | ||
5882f0f3 RH |
1175 | /* When processing a template, we need to remember where the braces were, |
1176 | so that we can set up identical scopes when instantiating the template | |
1177 | later. BIND_EXPR is a handy candidate for this. | |
1178 | Note that do_poplevel won't create a BIND_EXPR itself here (and thus | |
1179 | result in nested BIND_EXPRs), since we don't build BLOCK nodes when | |
1180 | processing templates. */ | |
1181 | if (processing_template_decl) | |
325c3691 | 1182 | { |
f293ce4b | 1183 | r = build3 (BIND_EXPR, NULL, NULL, r, NULL); |
5882f0f3 RH |
1184 | BIND_EXPR_TRY_BLOCK (r) = (flags & BCS_TRY_BLOCK) != 0; |
1185 | BIND_EXPR_BODY_BLOCK (r) = (flags & BCS_FN_BODY) != 0; | |
325c3691 RH |
1186 | TREE_SIDE_EFFECTS (r) = 1; |
1187 | } | |
ad321293 MM |
1188 | |
1189 | return r; | |
1190 | } | |
1191 | ||
5882f0f3 | 1192 | /* Finish a compound-statement, which is given by STMT. */ |
ad321293 | 1193 | |
325c3691 RH |
1194 | void |
1195 | finish_compound_stmt (tree stmt) | |
ad321293 | 1196 | { |
5882f0f3 RH |
1197 | if (TREE_CODE (stmt) == BIND_EXPR) |
1198 | BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt)); | |
325c3691 RH |
1199 | else if (STATEMENT_LIST_NO_SCOPE (stmt)) |
1200 | stmt = pop_stmt_list (stmt); | |
7a3397c7 | 1201 | else |
5f070bc7 ZL |
1202 | { |
1203 | /* Destroy any ObjC "super" receivers that may have been | |
1204 | created. */ | |
1205 | objc_clear_super_receiver (); | |
1206 | ||
1207 | stmt = do_poplevel (stmt); | |
1208 | } | |
ad321293 | 1209 | |
325c3691 RH |
1210 | /* ??? See c_end_compound_stmt wrt statement expressions. */ |
1211 | add_stmt (stmt); | |
ad321293 | 1212 | finish_stmt (); |
ad321293 MM |
1213 | } |
1214 | ||
6de9cd9a DN |
1215 | /* Finish an asm-statement, whose components are a STRING, some |
1216 | OUTPUT_OPERANDS, some INPUT_OPERANDS, and some CLOBBERS. Also note | |
1217 | whether the asm-statement should be considered volatile. */ | |
7dc5bd62 | 1218 | |
3e4d04a1 | 1219 | tree |
6de9cd9a DN |
1220 | finish_asm_stmt (int volatile_p, tree string, tree output_operands, |
1221 | tree input_operands, tree clobbers) | |
35b1567d BC |
1222 | { |
1223 | tree r; | |
abfc8a36 | 1224 | tree t; |
5544530a PB |
1225 | int ninputs = list_length (input_operands); |
1226 | int noutputs = list_length (output_operands); | |
abfc8a36 | 1227 | |
abfc8a36 | 1228 | if (!processing_template_decl) |
40b18c0a | 1229 | { |
74f0c611 RH |
1230 | const char *constraint; |
1231 | const char **oconstraints; | |
1232 | bool allows_mem, allows_reg, is_inout; | |
1233 | tree operand; | |
40b18c0a | 1234 | int i; |
40b18c0a | 1235 | |
74f0c611 RH |
1236 | oconstraints = (const char **) alloca (noutputs * sizeof (char *)); |
1237 | ||
1238 | string = resolve_asm_operand_names (string, output_operands, | |
1239 | input_operands); | |
1240 | ||
1241 | for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
40b18c0a | 1242 | { |
74f0c611 RH |
1243 | operand = TREE_VALUE (t); |
1244 | ||
1245 | /* ??? Really, this should not be here. Users should be using a | |
1246 | proper lvalue, dammit. But there's a long history of using | |
1247 | casts in the output operands. In cases like longlong.h, this | |
1248 | becomes a primitive form of typechecking -- if the cast can be | |
1249 | removed, then the output operand had a type of the proper width; | |
1250 | otherwise we'll get an error. Gross, but ... */ | |
1251 | STRIP_NOPS (operand); | |
1252 | ||
5ade1ed2 | 1253 | if (!lvalue_or_else (operand, lv_asm, tf_warning_or_error)) |
74f0c611 RH |
1254 | operand = error_mark_node; |
1255 | ||
3db45ab5 | 1256 | if (operand != error_mark_node |
5544530a PB |
1257 | && (TREE_READONLY (operand) |
1258 | || CP_TYPE_CONST_P (TREE_TYPE (operand)) | |
3db45ab5 MS |
1259 | /* Functions are not modifiable, even though they are |
1260 | lvalues. */ | |
1261 | || TREE_CODE (TREE_TYPE (operand)) == FUNCTION_TYPE | |
1262 | || TREE_CODE (TREE_TYPE (operand)) == METHOD_TYPE | |
1263 | /* If it's an aggregate and any field is const, then it is | |
1264 | effectively const. */ | |
1265 | || (CLASS_TYPE_P (TREE_TYPE (operand)) | |
1266 | && C_TYPE_FIELDS_READONLY (TREE_TYPE (operand))))) | |
fabb00fc | 1267 | readonly_error (operand, "assignment (via 'asm' output)"); |
5544530a | 1268 | |
74f0c611 RH |
1269 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); |
1270 | oconstraints[i] = constraint; | |
1271 | ||
1272 | if (parse_output_constraint (&constraint, i, ninputs, noutputs, | |
1273 | &allows_mem, &allows_reg, &is_inout)) | |
1274 | { | |
1275 | /* If the operand is going to end up in memory, | |
1276 | mark it addressable. */ | |
1277 | if (!allows_reg && !cxx_mark_addressable (operand)) | |
1278 | operand = error_mark_node; | |
1279 | } | |
1280 | else | |
1281 | operand = error_mark_node; | |
1282 | ||
1283 | TREE_VALUE (t) = operand; | |
1284 | } | |
1285 | ||
1286 | for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t)) | |
1287 | { | |
1288 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
c8094d83 | 1289 | operand = decay_conversion (TREE_VALUE (t)); |
74f0c611 | 1290 | |
40b18c0a MM |
1291 | /* If the type of the operand hasn't been determined (e.g., |
1292 | because it involves an overloaded function), then issue | |
1293 | an error message. There's no context available to | |
1294 | resolve the overloading. */ | |
74f0c611 | 1295 | if (TREE_TYPE (operand) == unknown_type_node) |
40b18c0a | 1296 | { |
c8094d83 | 1297 | error ("type of asm operand %qE could not be determined", |
0cbd7506 | 1298 | TREE_VALUE (t)); |
74f0c611 | 1299 | operand = error_mark_node; |
40b18c0a | 1300 | } |
40b18c0a | 1301 | |
74f0c611 RH |
1302 | if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0, |
1303 | oconstraints, &allows_mem, &allows_reg)) | |
40b18c0a | 1304 | { |
74f0c611 RH |
1305 | /* If the operand is going to end up in memory, |
1306 | mark it addressable. */ | |
b4c33883 AP |
1307 | if (!allows_reg && allows_mem) |
1308 | { | |
1309 | /* Strip the nops as we allow this case. FIXME, this really | |
1310 | should be rejected or made deprecated. */ | |
1311 | STRIP_NOPS (operand); | |
1312 | if (!cxx_mark_addressable (operand)) | |
1313 | operand = error_mark_node; | |
1314 | } | |
40b18c0a | 1315 | } |
74f0c611 RH |
1316 | else |
1317 | operand = error_mark_node; | |
40b18c0a | 1318 | |
74f0c611 | 1319 | TREE_VALUE (t) = operand; |
40b18c0a MM |
1320 | } |
1321 | } | |
abfc8a36 | 1322 | |
e130a54b | 1323 | r = build_stmt (ASM_EXPR, string, |
0dfdeca6 BC |
1324 | output_operands, input_operands, |
1325 | clobbers); | |
5544530a | 1326 | ASM_VOLATILE_P (r) = volatile_p || noutputs == 0; |
0ad28dde | 1327 | r = maybe_cleanup_point_expr_void (r); |
3e4d04a1 | 1328 | return add_stmt (r); |
ad321293 | 1329 | } |
b4c4a9ec | 1330 | |
f01b0acb MM |
1331 | /* Finish a label with the indicated NAME. */ |
1332 | ||
a723baf1 | 1333 | tree |
3a978d72 | 1334 | finish_label_stmt (tree name) |
f01b0acb | 1335 | { |
5b030314 | 1336 | tree decl = define_label (input_location, name); |
417fa55b LM |
1337 | |
1338 | if (decl == error_mark_node) | |
1339 | return error_mark_node; | |
1340 | ||
9e14e18f | 1341 | return add_stmt (build_stmt (LABEL_EXPR, decl)); |
f01b0acb MM |
1342 | } |
1343 | ||
acef433b MM |
1344 | /* Finish a series of declarations for local labels. G++ allows users |
1345 | to declare "local" labels, i.e., labels with scope. This extension | |
1346 | is useful when writing code involving statement-expressions. */ | |
1347 | ||
1348 | void | |
3a978d72 | 1349 | finish_label_decl (tree name) |
acef433b | 1350 | { |
a6d76a95 PC |
1351 | if (!at_function_scope_p ()) |
1352 | { | |
1353 | error ("__label__ declarations are only allowed in function scopes"); | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | add_decl_expr (declare_local_label (name)); | |
acef433b MM |
1358 | } |
1359 | ||
659e5a7a | 1360 | /* When DECL goes out of scope, make sure that CLEANUP is executed. */ |
f1dedc31 | 1361 | |
c8094d83 | 1362 | void |
3a978d72 | 1363 | finish_decl_cleanup (tree decl, tree cleanup) |
f1dedc31 | 1364 | { |
325c3691 | 1365 | push_cleanup (decl, cleanup, false); |
35b1567d BC |
1366 | } |
1367 | ||
659e5a7a | 1368 | /* If the current scope exits with an exception, run CLEANUP. */ |
24bef158 | 1369 | |
659e5a7a | 1370 | void |
3a978d72 | 1371 | finish_eh_cleanup (tree cleanup) |
24bef158 | 1372 | { |
325c3691 | 1373 | push_cleanup (NULL, cleanup, true); |
35b1567d BC |
1374 | } |
1375 | ||
2282d28d MM |
1376 | /* The MEM_INITS is a list of mem-initializers, in reverse of the |
1377 | order they were written by the user. Each node is as for | |
1378 | emit_mem_initializers. */ | |
bf3428d0 MM |
1379 | |
1380 | void | |
2282d28d | 1381 | finish_mem_initializers (tree mem_inits) |
bf3428d0 | 1382 | { |
2282d28d MM |
1383 | /* Reorder the MEM_INITS so that they are in the order they appeared |
1384 | in the source program. */ | |
1385 | mem_inits = nreverse (mem_inits); | |
bf3428d0 | 1386 | |
a0de9d20 | 1387 | if (processing_template_decl) |
5d80a306 DG |
1388 | { |
1389 | tree mem; | |
1390 | ||
1391 | for (mem = mem_inits; mem; mem = TREE_CHAIN (mem)) | |
1392 | { | |
1393 | /* If the TREE_PURPOSE is a TYPE_PACK_EXPANSION, skip the | |
1394 | check for bare parameter packs in the TREE_VALUE, because | |
1395 | any parameter packs in the TREE_VALUE have already been | |
1396 | bound as part of the TREE_PURPOSE. See | |
1397 | make_pack_expansion for more information. */ | |
4439d02f | 1398 | if (TREE_CODE (TREE_PURPOSE (mem)) != TYPE_PACK_EXPANSION |
7b3e2d46 | 1399 | && check_for_bare_parameter_packs (TREE_VALUE (mem))) |
4439d02f | 1400 | TREE_VALUE (mem) = error_mark_node; |
5d80a306 DG |
1401 | } |
1402 | ||
1403 | add_stmt (build_min_nt (CTOR_INITIALIZER, mem_inits)); | |
1404 | } | |
cdd2559c | 1405 | else |
2282d28d | 1406 | emit_mem_initializers (mem_inits); |
558475f0 MM |
1407 | } |
1408 | ||
b4c4a9ec MM |
1409 | /* Finish a parenthesized expression EXPR. */ |
1410 | ||
1411 | tree | |
3a978d72 | 1412 | finish_parenthesized_expr (tree expr) |
b4c4a9ec | 1413 | { |
6615c446 | 1414 | if (EXPR_P (expr)) |
78ef5b89 | 1415 | /* This inhibits warnings in c_common_truthvalue_conversion. */ |
31ec7d2f | 1416 | TREE_NO_WARNING (expr) = 1; |
b4c4a9ec | 1417 | |
19420d00 NS |
1418 | if (TREE_CODE (expr) == OFFSET_REF) |
1419 | /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1420 | enclosed in parentheses. */ | |
1421 | PTRMEM_OK_P (expr) = 0; | |
c8094d83 | 1422 | |
7a8380ae NS |
1423 | if (TREE_CODE (expr) == STRING_CST) |
1424 | PAREN_STRING_LITERAL_P (expr) = 1; | |
c8094d83 | 1425 | |
b4c4a9ec MM |
1426 | return expr; |
1427 | } | |
1428 | ||
a723baf1 MM |
1429 | /* Finish a reference to a non-static data member (DECL) that is not |
1430 | preceded by `.' or `->'. */ | |
1431 | ||
1432 | tree | |
a3f10e50 | 1433 | finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) |
a723baf1 | 1434 | { |
50bc768d | 1435 | gcc_assert (TREE_CODE (decl) == FIELD_DECL); |
a723baf1 | 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 | } | |
1448 | TREE_USED (current_class_ptr) = 1; | |
58e1d54c | 1449 | if (processing_template_decl && !qualifying_scope) |
a723baf1 | 1450 | { |
a3f10e50 | 1451 | tree type = TREE_TYPE (decl); |
a723baf1 | 1452 | |
a3f10e50 NS |
1453 | if (TREE_CODE (type) == REFERENCE_TYPE) |
1454 | type = TREE_TYPE (type); | |
1455 | else | |
1456 | { | |
f4f206f4 | 1457 | /* Set the cv qualifiers. */ |
a3f10e50 | 1458 | int quals = cp_type_quals (TREE_TYPE (current_class_ref)); |
c8094d83 | 1459 | |
a3f10e50 NS |
1460 | if (DECL_MUTABLE_P (decl)) |
1461 | quals &= ~TYPE_QUAL_CONST; | |
9e95d15f | 1462 | |
a3f10e50 NS |
1463 | quals |= cp_type_quals (TREE_TYPE (decl)); |
1464 | type = cp_build_qualified_type (type, quals); | |
1465 | } | |
c8094d83 | 1466 | |
44de5aeb | 1467 | return build_min (COMPONENT_REF, type, object, decl, NULL_TREE); |
a3f10e50 NS |
1468 | } |
1469 | else | |
1470 | { | |
1471 | tree access_type = TREE_TYPE (object); | |
1472 | tree lookup_context = context_for_name_lookup (decl); | |
c8094d83 | 1473 | |
a3f10e50 | 1474 | while (!DERIVED_FROM_P (lookup_context, access_type)) |
a723baf1 MM |
1475 | { |
1476 | access_type = TYPE_CONTEXT (access_type); | |
9f01ded6 | 1477 | while (access_type && DECL_P (access_type)) |
a723baf1 | 1478 | access_type = DECL_CONTEXT (access_type); |
a723baf1 | 1479 | |
a3f10e50 NS |
1480 | if (!access_type) |
1481 | { | |
dee15844 | 1482 | error ("object missing in reference to %q+D", decl); |
a3f10e50 NS |
1483 | error ("from this location"); |
1484 | return error_mark_node; | |
1485 | } | |
9f01ded6 KL |
1486 | } |
1487 | ||
5c425df5 | 1488 | /* If PROCESSING_TEMPLATE_DECL is nonzero here, then |
58e1d54c KL |
1489 | QUALIFYING_SCOPE is also non-null. Wrap this in a SCOPE_REF |
1490 | for now. */ | |
1491 | if (processing_template_decl) | |
02ed62dd MM |
1492 | return build_qualified_name (TREE_TYPE (decl), |
1493 | qualifying_scope, | |
1494 | DECL_NAME (decl), | |
1495 | /*template_p=*/false); | |
58e1d54c | 1496 | |
02022f3a SM |
1497 | perform_or_defer_access_check (TYPE_BINFO (access_type), decl, |
1498 | decl); | |
a723baf1 MM |
1499 | |
1500 | /* If the data member was named `C::M', convert `*this' to `C' | |
1501 | first. */ | |
1502 | if (qualifying_scope) | |
1503 | { | |
1504 | tree binfo = NULL_TREE; | |
1505 | object = build_scoped_ref (object, qualifying_scope, | |
1506 | &binfo); | |
1507 | } | |
1508 | ||
1509 | return build_class_member_access_expr (object, decl, | |
1510 | /*access_path=*/NULL_TREE, | |
5ade1ed2 DG |
1511 | /*preserve_reference=*/false, |
1512 | tf_warning_or_error); | |
a723baf1 MM |
1513 | } |
1514 | } | |
1515 | ||
ee76b931 MM |
1516 | /* DECL was the declaration to which a qualified-id resolved. Issue |
1517 | an error message if it is not accessible. If OBJECT_TYPE is | |
1518 | non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1519 | type of `*x', or `x', respectively. If the DECL was named as | |
1520 | `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1521 | ||
1522 | void | |
c8094d83 MS |
1523 | check_accessibility_of_qualified_id (tree decl, |
1524 | tree object_type, | |
ee76b931 MM |
1525 | tree nested_name_specifier) |
1526 | { | |
1527 | tree scope; | |
1528 | tree qualifying_type = NULL_TREE; | |
95b4aca6 | 1529 | |
77880ae4 | 1530 | /* If we're not checking, return immediately. */ |
95b4aca6 NS |
1531 | if (deferred_access_no_check) |
1532 | return; | |
c8094d83 | 1533 | |
ee76b931 MM |
1534 | /* Determine the SCOPE of DECL. */ |
1535 | scope = context_for_name_lookup (decl); | |
1536 | /* If the SCOPE is not a type, then DECL is not a member. */ | |
1537 | if (!TYPE_P (scope)) | |
1538 | return; | |
1539 | /* Compute the scope through which DECL is being accessed. */ | |
c8094d83 | 1540 | if (object_type |
ee76b931 MM |
1541 | /* OBJECT_TYPE might not be a class type; consider: |
1542 | ||
1543 | class A { typedef int I; }; | |
1544 | I *p; | |
1545 | p->A::I::~I(); | |
1546 | ||
0cbd7506 | 1547 | In this case, we will have "A::I" as the DECL, but "I" as the |
ee76b931 MM |
1548 | OBJECT_TYPE. */ |
1549 | && CLASS_TYPE_P (object_type) | |
1550 | && DERIVED_FROM_P (scope, object_type)) | |
1551 | /* If we are processing a `->' or `.' expression, use the type of the | |
1552 | left-hand side. */ | |
1553 | qualifying_type = object_type; | |
1554 | else if (nested_name_specifier) | |
1555 | { | |
1556 | /* If the reference is to a non-static member of the | |
1557 | current class, treat it as if it were referenced through | |
1558 | `this'. */ | |
1559 | if (DECL_NONSTATIC_MEMBER_P (decl) | |
1560 | && current_class_ptr | |
1561 | && DERIVED_FROM_P (scope, current_class_type)) | |
1562 | qualifying_type = current_class_type; | |
1563 | /* Otherwise, use the type indicated by the | |
1564 | nested-name-specifier. */ | |
1565 | else | |
1566 | qualifying_type = nested_name_specifier; | |
1567 | } | |
1568 | else | |
1569 | /* Otherwise, the name must be from the current class or one of | |
1570 | its bases. */ | |
1571 | qualifying_type = currently_open_derived_class (scope); | |
1572 | ||
fc429748 MM |
1573 | if (qualifying_type |
1574 | /* It is possible for qualifying type to be a TEMPLATE_TYPE_PARM | |
1575 | or similar in a default argument value. */ | |
1576 | && CLASS_TYPE_P (qualifying_type) | |
1577 | && !dependent_type_p (qualifying_type)) | |
02022f3a SM |
1578 | perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl, |
1579 | decl); | |
ee76b931 MM |
1580 | } |
1581 | ||
1582 | /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1583 | class named to the left of the "::" operator. DONE is true if this | |
1584 | expression is a complete postfix-expression; it is false if this | |
1585 | expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
02ed62dd MM |
1586 | iff this expression is the operand of '&'. TEMPLATE_P is true iff |
1587 | the qualified-id was of the form "A::template B". TEMPLATE_ARG_P | |
1588 | is true iff this qualified name appears as a template argument. */ | |
ee76b931 MM |
1589 | |
1590 | tree | |
3db45ab5 MS |
1591 | finish_qualified_id_expr (tree qualifying_class, |
1592 | tree expr, | |
02ed62dd | 1593 | bool done, |
3db45ab5 | 1594 | bool address_p, |
02ed62dd MM |
1595 | bool template_p, |
1596 | bool template_arg_p) | |
ee76b931 | 1597 | { |
d4f0f205 MM |
1598 | gcc_assert (TYPE_P (qualifying_class)); |
1599 | ||
5e08432e MM |
1600 | if (error_operand_p (expr)) |
1601 | return error_mark_node; | |
1602 | ||
7eab6e7b | 1603 | if (DECL_P (expr) || BASELINK_P (expr)) |
d4f0f205 | 1604 | mark_used (expr); |
d4f0f205 | 1605 | |
02ed62dd MM |
1606 | if (template_p) |
1607 | check_template_keyword (expr); | |
1608 | ||
ee76b931 MM |
1609 | /* If EXPR occurs as the operand of '&', use special handling that |
1610 | permits a pointer-to-member. */ | |
1611 | if (address_p && done) | |
1612 | { | |
1613 | if (TREE_CODE (expr) == SCOPE_REF) | |
1614 | expr = TREE_OPERAND (expr, 1); | |
c8094d83 | 1615 | expr = build_offset_ref (qualifying_class, expr, |
a5ac359a | 1616 | /*address_p=*/true); |
ee76b931 MM |
1617 | return expr; |
1618 | } | |
1619 | ||
02ed62dd MM |
1620 | /* Within the scope of a class, turn references to non-static |
1621 | members into expression of the form "this->...". */ | |
1622 | if (template_arg_p) | |
1623 | /* But, within a template argument, we do not want make the | |
1624 | transformation, as there is no "this" pointer. */ | |
1625 | ; | |
1626 | else if (TREE_CODE (expr) == FIELD_DECL) | |
43854f72 SB |
1627 | { |
1628 | push_deferring_access_checks (dk_no_check); | |
1629 | expr = finish_non_static_data_member (expr, current_class_ref, | |
1630 | qualifying_class); | |
1631 | pop_deferring_access_checks (); | |
1632 | } | |
ee76b931 MM |
1633 | else if (BASELINK_P (expr) && !processing_template_decl) |
1634 | { | |
ee76b931 MM |
1635 | tree fns; |
1636 | ||
1637 | /* See if any of the functions are non-static members. */ | |
1638 | fns = BASELINK_FUNCTIONS (expr); | |
1639 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
1640 | fns = TREE_OPERAND (fns, 0); | |
ee76b931 MM |
1641 | /* If so, the expression may be relative to the current |
1642 | class. */ | |
821eaf2a | 1643 | if (!shared_member_p (fns) |
c8094d83 | 1644 | && current_class_type |
ee76b931 | 1645 | && DERIVED_FROM_P (qualifying_class, current_class_type)) |
c8094d83 | 1646 | expr = (build_class_member_access_expr |
ee76b931 MM |
1647 | (maybe_dummy_object (qualifying_class, NULL), |
1648 | expr, | |
1649 | BASELINK_ACCESS_BINFO (expr), | |
5ade1ed2 DG |
1650 | /*preserve_reference=*/false, |
1651 | tf_warning_or_error)); | |
ee76b931 | 1652 | else if (done) |
a5ac359a MM |
1653 | /* The expression is a qualified name whose address is not |
1654 | being taken. */ | |
1655 | expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false); | |
ee76b931 MM |
1656 | } |
1657 | ||
1658 | return expr; | |
1659 | } | |
1660 | ||
b69b1501 MM |
1661 | /* Begin a statement-expression. The value returned must be passed to |
1662 | finish_stmt_expr. */ | |
b4c4a9ec | 1663 | |
c8094d83 | 1664 | tree |
3a978d72 | 1665 | begin_stmt_expr (void) |
b4c4a9ec | 1666 | { |
325c3691 | 1667 | return push_stmt_list (); |
35b1567d BC |
1668 | } |
1669 | ||
a5bcc582 | 1670 | /* Process the final expression of a statement expression. EXPR can be |
85a56c9d MM |
1671 | NULL, if the final expression is empty. Return a STATEMENT_LIST |
1672 | containing all the statements in the statement-expression, or | |
1673 | ERROR_MARK_NODE if there was an error. */ | |
a5bcc582 NS |
1674 | |
1675 | tree | |
325c3691 | 1676 | finish_stmt_expr_expr (tree expr, tree stmt_expr) |
a5bcc582 | 1677 | { |
72e4661a | 1678 | if (error_operand_p (expr)) |
76b9a2a1 AP |
1679 | { |
1680 | /* The type of the statement-expression is the type of the last | |
1681 | expression. */ | |
1682 | TREE_TYPE (stmt_expr) = error_mark_node; | |
1683 | return error_mark_node; | |
1684 | } | |
c8094d83 | 1685 | |
85a56c9d | 1686 | /* If the last statement does not have "void" type, then the value |
3db45ab5 | 1687 | of the last statement is the value of the entire expression. */ |
a5bcc582 NS |
1688 | if (expr) |
1689 | { | |
c6c7698d JM |
1690 | tree type = TREE_TYPE (expr); |
1691 | ||
1692 | if (processing_template_decl) | |
1693 | { | |
1694 | expr = build_stmt (EXPR_STMT, expr); | |
1695 | expr = add_stmt (expr); | |
1696 | /* Mark the last statement so that we can recognize it as such at | |
1697 | template-instantiation time. */ | |
1698 | EXPR_STMT_STMT_EXPR_RESULT (expr) = 1; | |
1699 | } | |
1700 | else if (VOID_TYPE_P (type)) | |
a5bcc582 | 1701 | { |
c6c7698d JM |
1702 | /* Just treat this like an ordinary statement. */ |
1703 | expr = finish_expr_stmt (expr); | |
1704 | } | |
1705 | else | |
1706 | { | |
1707 | /* It actually has a value we need to deal with. First, force it | |
1708 | to be an rvalue so that we won't need to build up a copy | |
1709 | constructor call later when we try to assign it to something. */ | |
1710 | expr = force_rvalue (expr); | |
85a56c9d MM |
1711 | if (error_operand_p (expr)) |
1712 | return error_mark_node; | |
c6c7698d JM |
1713 | |
1714 | /* Update for array-to-pointer decay. */ | |
2692eb7d | 1715 | type = TREE_TYPE (expr); |
c6c7698d JM |
1716 | |
1717 | /* Wrap it in a CLEANUP_POINT_EXPR and add it to the list like a | |
1718 | normal statement, but don't convert to void or actually add | |
1719 | the EXPR_STMT. */ | |
1720 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
1721 | expr = maybe_cleanup_point_expr (expr); | |
1722 | add_stmt (expr); | |
85a56c9d | 1723 | } |
c6c7698d | 1724 | |
85a56c9d MM |
1725 | /* The type of the statement-expression is the type of the last |
1726 | expression. */ | |
1727 | TREE_TYPE (stmt_expr) = type; | |
a5bcc582 | 1728 | } |
c8094d83 | 1729 | |
85a56c9d | 1730 | return stmt_expr; |
a5bcc582 NS |
1731 | } |
1732 | ||
303b7406 NS |
1733 | /* Finish a statement-expression. EXPR should be the value returned |
1734 | by the previous begin_stmt_expr. Returns an expression | |
1735 | representing the statement-expression. */ | |
b4c4a9ec | 1736 | |
c8094d83 | 1737 | tree |
325c3691 | 1738 | finish_stmt_expr (tree stmt_expr, bool has_no_scope) |
b4c4a9ec | 1739 | { |
85a56c9d MM |
1740 | tree type; |
1741 | tree result; | |
325c3691 | 1742 | |
85a56c9d MM |
1743 | if (error_operand_p (stmt_expr)) |
1744 | return error_mark_node; | |
325c3691 | 1745 | |
85a56c9d | 1746 | gcc_assert (TREE_CODE (stmt_expr) == STATEMENT_LIST); |
325c3691 | 1747 | |
85a56c9d MM |
1748 | type = TREE_TYPE (stmt_expr); |
1749 | result = pop_stmt_list (stmt_expr); | |
c6c7698d | 1750 | TREE_TYPE (result) = type; |
6f80451c | 1751 | |
a5bcc582 | 1752 | if (processing_template_decl) |
325c3691 RH |
1753 | { |
1754 | result = build_min (STMT_EXPR, type, result); | |
1755 | TREE_SIDE_EFFECTS (result) = 1; | |
1756 | STMT_EXPR_NO_SCOPE (result) = has_no_scope; | |
1757 | } | |
c6c7698d | 1758 | else if (CLASS_TYPE_P (type)) |
a5bcc582 | 1759 | { |
c6c7698d JM |
1760 | /* Wrap the statement-expression in a TARGET_EXPR so that the |
1761 | temporary object created by the final expression is destroyed at | |
1762 | the end of the full-expression containing the | |
1763 | statement-expression. */ | |
1764 | result = force_target_expr (type, result); | |
a5bcc582 | 1765 | } |
325c3691 | 1766 | |
b4c4a9ec MM |
1767 | return result; |
1768 | } | |
1769 | ||
c2acde1e JM |
1770 | /* Returns the expression which provides the value of STMT_EXPR. */ |
1771 | ||
1772 | tree | |
1773 | stmt_expr_value_expr (tree stmt_expr) | |
1774 | { | |
1775 | tree t = STMT_EXPR_STMT (stmt_expr); | |
1776 | ||
1777 | if (TREE_CODE (t) == BIND_EXPR) | |
1778 | t = BIND_EXPR_BODY (t); | |
1779 | ||
1780 | if (TREE_CODE (t) == STATEMENT_LIST) | |
1781 | t = STATEMENT_LIST_TAIL (t)->stmt; | |
1782 | ||
1783 | if (TREE_CODE (t) == EXPR_STMT) | |
1784 | t = EXPR_STMT_EXPR (t); | |
1785 | ||
1786 | return t; | |
1787 | } | |
1788 | ||
b3445994 | 1789 | /* Perform Koenig lookup. FN is the postfix-expression representing |
fa531100 MM |
1790 | the function (or functions) to call; ARGS are the arguments to the |
1791 | call. Returns the functions to be considered by overload | |
1792 | resolution. */ | |
b3445994 MM |
1793 | |
1794 | tree | |
1795 | perform_koenig_lookup (tree fn, tree args) | |
1796 | { | |
1797 | tree identifier = NULL_TREE; | |
1798 | tree functions = NULL_TREE; | |
1799 | ||
1800 | /* Find the name of the overloaded function. */ | |
1801 | if (TREE_CODE (fn) == IDENTIFIER_NODE) | |
1802 | identifier = fn; | |
1803 | else if (is_overloaded_fn (fn)) | |
1804 | { | |
1805 | functions = fn; | |
1806 | identifier = DECL_NAME (get_first_fn (functions)); | |
1807 | } | |
1808 | else if (DECL_P (fn)) | |
1809 | { | |
1810 | functions = fn; | |
1811 | identifier = DECL_NAME (fn); | |
1812 | } | |
1813 | ||
1814 | /* A call to a namespace-scope function using an unqualified name. | |
1815 | ||
1816 | Do Koenig lookup -- unless any of the arguments are | |
1817 | type-dependent. */ | |
1818 | if (!any_type_dependent_arguments_p (args)) | |
1819 | { | |
1820 | fn = lookup_arg_dependent (identifier, functions, args); | |
1821 | if (!fn) | |
1822 | /* The unqualified name could not be resolved. */ | |
1823 | fn = unqualified_fn_lookup_error (identifier); | |
1824 | } | |
b3445994 MM |
1825 | |
1826 | return fn; | |
1827 | } | |
1828 | ||
4ba126e4 MM |
1829 | /* Generate an expression for `FN (ARGS)'. |
1830 | ||
1831 | If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
1832 | as a virtual call, even if FN is virtual. (This flag is set when | |
1833 | encountering an expression where the function name is explicitly | |
1834 | qualified. For example a call to `X::f' never generates a virtual | |
1835 | call.) | |
1836 | ||
1837 | Returns code for the call. */ | |
b4c4a9ec | 1838 | |
c8094d83 | 1839 | tree |
5ade1ed2 DG |
1840 | finish_call_expr (tree fn, tree args, bool disallow_virtual, bool koenig_p, |
1841 | tsubst_flags_t complain) | |
b4c4a9ec | 1842 | { |
d17811fd MM |
1843 | tree result; |
1844 | tree orig_fn; | |
1845 | tree orig_args; | |
1846 | ||
4ba126e4 MM |
1847 | if (fn == error_mark_node || args == error_mark_node) |
1848 | return error_mark_node; | |
1849 | ||
4ba126e4 | 1850 | /* ARGS should be a list of arguments. */ |
50bc768d | 1851 | gcc_assert (!args || TREE_CODE (args) == TREE_LIST); |
4860b874 | 1852 | gcc_assert (!TYPE_P (fn)); |
a759e627 | 1853 | |
d17811fd MM |
1854 | orig_fn = fn; |
1855 | orig_args = args; | |
1856 | ||
1857 | if (processing_template_decl) | |
1858 | { | |
1859 | if (type_dependent_expression_p (fn) | |
1860 | || any_type_dependent_arguments_p (args)) | |
6d80c4b9 | 1861 | { |
5039610b | 1862 | result = build_nt_call_list (fn, args); |
6d80c4b9 | 1863 | KOENIG_LOOKUP_P (result) = koenig_p; |
be461b8f JJ |
1864 | if (cfun) |
1865 | { | |
1866 | do | |
1867 | { | |
1868 | tree fndecl = OVL_CURRENT (fn); | |
1869 | if (TREE_CODE (fndecl) != FUNCTION_DECL | |
1870 | || !TREE_THIS_VOLATILE (fndecl)) | |
1871 | break; | |
1872 | fn = OVL_NEXT (fn); | |
1873 | } | |
1874 | while (fn); | |
1875 | if (!fn) | |
1876 | current_function_returns_abnormally = 1; | |
1877 | } | |
6d80c4b9 MM |
1878 | return result; |
1879 | } | |
d17811fd MM |
1880 | if (!BASELINK_P (fn) |
1881 | && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
1882 | && TREE_TYPE (fn) != unknown_type_node) | |
1883 | fn = build_non_dependent_expr (fn); | |
1884 | args = build_non_dependent_args (orig_args); | |
1885 | } | |
1886 | ||
eff3a276 MM |
1887 | if (is_overloaded_fn (fn)) |
1888 | fn = baselink_for_fns (fn); | |
a723baf1 | 1889 | |
d17811fd | 1890 | result = NULL_TREE; |
4ba126e4 | 1891 | if (BASELINK_P (fn)) |
03d82991 | 1892 | { |
4ba126e4 MM |
1893 | tree object; |
1894 | ||
1895 | /* A call to a member function. From [over.call.func]: | |
1896 | ||
1897 | If the keyword this is in scope and refers to the class of | |
1898 | that member function, or a derived class thereof, then the | |
1899 | function call is transformed into a qualified function call | |
1900 | using (*this) as the postfix-expression to the left of the | |
1901 | . operator.... [Otherwise] a contrived object of type T | |
c8094d83 | 1902 | becomes the implied object argument. |
4ba126e4 | 1903 | |
0cbd7506 | 1904 | This paragraph is unclear about this situation: |
4ba126e4 MM |
1905 | |
1906 | struct A { void f(); }; | |
1907 | struct B : public A {}; | |
1908 | struct C : public A { void g() { B::f(); }}; | |
1909 | ||
1910 | In particular, for `B::f', this paragraph does not make clear | |
c8094d83 | 1911 | whether "the class of that member function" refers to `A' or |
4ba126e4 | 1912 | to `B'. We believe it refers to `B'. */ |
c8094d83 | 1913 | if (current_class_type |
4ba126e4 MM |
1914 | && DERIVED_FROM_P (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1915 | current_class_type) | |
1916 | && current_class_ref) | |
127b8136 MM |
1917 | object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1918 | NULL); | |
4ba126e4 MM |
1919 | else |
1920 | { | |
1921 | tree representative_fn; | |
b4c4a9ec | 1922 | |
4ba126e4 MM |
1923 | representative_fn = BASELINK_FUNCTIONS (fn); |
1924 | if (TREE_CODE (representative_fn) == TEMPLATE_ID_EXPR) | |
1925 | representative_fn = TREE_OPERAND (representative_fn, 0); | |
1926 | representative_fn = get_first_fn (representative_fn); | |
1927 | object = build_dummy_object (DECL_CONTEXT (representative_fn)); | |
1928 | } | |
b4c4a9ec | 1929 | |
d17811fd MM |
1930 | if (processing_template_decl) |
1931 | { | |
1932 | if (type_dependent_expression_p (object)) | |
5039610b | 1933 | return build_nt_call_list (orig_fn, orig_args); |
d17811fd MM |
1934 | object = build_non_dependent_expr (object); |
1935 | } | |
1936 | ||
1937 | result = build_new_method_call (object, fn, args, NULL_TREE, | |
c8094d83 | 1938 | (disallow_virtual |
63c9a190 | 1939 | ? LOOKUP_NONVIRTUAL : 0), |
5ade1ed2 DG |
1940 | /*fn_p=*/NULL, |
1941 | complain); | |
4ba126e4 MM |
1942 | } |
1943 | else if (is_overloaded_fn (fn)) | |
16c35a1f RH |
1944 | { |
1945 | /* If the function is an overloaded builtin, resolve it. */ | |
1946 | if (TREE_CODE (fn) == FUNCTION_DECL | |
58646b77 PB |
1947 | && (DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL |
1948 | || DECL_BUILT_IN_CLASS (fn) == BUILT_IN_MD)) | |
0cbd7506 | 1949 | result = resolve_overloaded_builtin (fn, args); |
16c35a1f RH |
1950 | |
1951 | if (!result) | |
1952 | /* A call to a namespace-scope function. */ | |
5ade1ed2 | 1953 | result = build_new_function_call (fn, args, koenig_p, complain); |
16c35a1f | 1954 | } |
a723baf1 MM |
1955 | else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) |
1956 | { | |
a723baf1 MM |
1957 | if (args) |
1958 | error ("arguments to destructor are not allowed"); | |
1959 | /* Mark the pseudo-destructor call as having side-effects so | |
1960 | that we do not issue warnings about its use. */ | |
1961 | result = build1 (NOP_EXPR, | |
1962 | void_type_node, | |
1963 | TREE_OPERAND (fn, 0)); | |
1964 | TREE_SIDE_EFFECTS (result) = 1; | |
a723baf1 | 1965 | } |
4ba126e4 | 1966 | else if (CLASS_TYPE_P (TREE_TYPE (fn))) |
d17811fd MM |
1967 | /* If the "function" is really an object of class type, it might |
1968 | have an overloaded `operator ()'. */ | |
ec835fb2 | 1969 | result = build_new_op (CALL_EXPR, LOOKUP_NORMAL, fn, args, NULL_TREE, |
5ade1ed2 | 1970 | /*overloaded_p=*/NULL, complain); |
16c35a1f | 1971 | |
d17811fd MM |
1972 | if (!result) |
1973 | /* A call where the function is unknown. */ | |
5ade1ed2 | 1974 | result = cp_build_function_call (fn, args, complain); |
4ba126e4 | 1975 | |
d17811fd | 1976 | if (processing_template_decl) |
6d80c4b9 | 1977 | { |
5039610b | 1978 | result = build_call_list (TREE_TYPE (result), orig_fn, orig_args); |
6d80c4b9 MM |
1979 | KOENIG_LOOKUP_P (result) = koenig_p; |
1980 | } | |
d17811fd | 1981 | return result; |
b4c4a9ec MM |
1982 | } |
1983 | ||
1984 | /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
1985 | is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
1986 | POSTDECREMENT_EXPR.) */ | |
1987 | ||
c8094d83 | 1988 | tree |
3a978d72 | 1989 | finish_increment_expr (tree expr, enum tree_code code) |
b4c4a9ec | 1990 | { |
5ade1ed2 | 1991 | return build_x_unary_op (code, expr, tf_warning_or_error); |
b4c4a9ec MM |
1992 | } |
1993 | ||
1994 | /* Finish a use of `this'. Returns an expression for `this'. */ | |
1995 | ||
c8094d83 | 1996 | tree |
3a978d72 | 1997 | finish_this_expr (void) |
b4c4a9ec MM |
1998 | { |
1999 | tree result; | |
2000 | ||
2001 | if (current_class_ptr) | |
2002 | { | |
b4c4a9ec MM |
2003 | result = current_class_ptr; |
2004 | } | |
2005 | else if (current_function_decl | |
2006 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
2007 | { | |
9e637a26 | 2008 | error ("%<this%> is unavailable for static member functions"); |
b4c4a9ec MM |
2009 | result = error_mark_node; |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | if (current_function_decl) | |
9e637a26 | 2014 | error ("invalid use of %<this%> in non-member function"); |
b4c4a9ec | 2015 | else |
9e637a26 | 2016 | error ("invalid use of %<this%> at top level"); |
b4c4a9ec MM |
2017 | result = error_mark_node; |
2018 | } | |
2019 | ||
2020 | return result; | |
2021 | } | |
2022 | ||
a723baf1 MM |
2023 | /* Finish a pseudo-destructor expression. If SCOPE is NULL, the |
2024 | expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
2025 | the TYPE for the type given. If SCOPE is non-NULL, the expression | |
2026 | was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
b4c4a9ec | 2027 | |
c8094d83 | 2028 | tree |
3a978d72 | 2029 | finish_pseudo_destructor_expr (tree object, tree scope, tree destructor) |
b4c4a9ec | 2030 | { |
09b1ccd6 | 2031 | if (object == error_mark_node || destructor == error_mark_node) |
a723baf1 | 2032 | return error_mark_node; |
40242ccf | 2033 | |
50bc768d | 2034 | gcc_assert (TYPE_P (destructor)); |
b4c4a9ec | 2035 | |
a723baf1 MM |
2036 | if (!processing_template_decl) |
2037 | { | |
2038 | if (scope == error_mark_node) | |
2039 | { | |
2040 | error ("invalid qualifying scope in pseudo-destructor name"); | |
2041 | return error_mark_node; | |
2042 | } | |
5cf10afb AP |
2043 | if (scope && TYPE_P (scope) && !check_dtor_name (scope, destructor)) |
2044 | { | |
2045 | error ("qualified type %qT does not match destructor name ~%qT", | |
2046 | scope, destructor); | |
2047 | return error_mark_node; | |
2048 | } | |
2049 | ||
c8094d83 | 2050 | |
26bcf8fc MM |
2051 | /* [expr.pseudo] says both: |
2052 | ||
0cbd7506 | 2053 | The type designated by the pseudo-destructor-name shall be |
26bcf8fc MM |
2054 | the same as the object type. |
2055 | ||
0cbd7506 | 2056 | and: |
26bcf8fc | 2057 | |
0cbd7506 | 2058 | The cv-unqualified versions of the object type and of the |
26bcf8fc MM |
2059 | type designated by the pseudo-destructor-name shall be the |
2060 | same type. | |
2061 | ||
0cbd7506 MS |
2062 | We implement the more generous second sentence, since that is |
2063 | what most other compilers do. */ | |
c8094d83 | 2064 | if (!same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (object), |
26bcf8fc | 2065 | destructor)) |
a723baf1 | 2066 | { |
a82e1a7d | 2067 | error ("%qE is not of type %qT", object, destructor); |
a723baf1 MM |
2068 | return error_mark_node; |
2069 | } | |
2070 | } | |
b4c4a9ec | 2071 | |
f293ce4b | 2072 | return build3 (PSEUDO_DTOR_EXPR, void_type_node, object, scope, destructor); |
b4c4a9ec MM |
2073 | } |
2074 | ||
ce4a0391 MM |
2075 | /* Finish an expression of the form CODE EXPR. */ |
2076 | ||
2077 | tree | |
3a978d72 | 2078 | finish_unary_op_expr (enum tree_code code, tree expr) |
ce4a0391 | 2079 | { |
5ade1ed2 | 2080 | tree result = build_x_unary_op (code, expr, tf_warning_or_error); |
7c355bca ML |
2081 | /* Inside a template, build_x_unary_op does not fold the |
2082 | expression. So check whether the result is folded before | |
2083 | setting TREE_NEGATED_INT. */ | |
2084 | if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST | |
88b4335f | 2085 | && TREE_CODE (result) == INTEGER_CST |
8df83eae | 2086 | && !TYPE_UNSIGNED (TREE_TYPE (result)) |
88b4335f | 2087 | && INT_CST_LT (result, integer_zero_node)) |
6fc98adf MM |
2088 | { |
2089 | /* RESULT may be a cached INTEGER_CST, so we must copy it before | |
2090 | setting TREE_NEGATED_INT. */ | |
2091 | result = copy_node (result); | |
2092 | TREE_NEGATED_INT (result) = 1; | |
2093 | } | |
59c0753d MLI |
2094 | if (TREE_OVERFLOW_P (result) && !TREE_OVERFLOW_P (expr)) |
2095 | overflow_warning (result); | |
2096 | ||
ce4a0391 MM |
2097 | return result; |
2098 | } | |
2099 | ||
a723baf1 MM |
2100 | /* Finish a compound-literal expression. TYPE is the type to which |
2101 | the INITIALIZER_LIST is being cast. */ | |
2102 | ||
2103 | tree | |
4038c495 | 2104 | finish_compound_literal (tree type, VEC(constructor_elt,gc) *initializer_list) |
a723baf1 | 2105 | { |
e92fb501 | 2106 | tree var; |
a723baf1 MM |
2107 | tree compound_literal; |
2108 | ||
2b643eda MM |
2109 | if (!TYPE_OBJ_P (type)) |
2110 | { | |
2111 | error ("compound literal of non-object type %qT", type); | |
2112 | return error_mark_node; | |
2113 | } | |
2114 | ||
a723baf1 | 2115 | /* Build a CONSTRUCTOR for the INITIALIZER_LIST. */ |
dcf92453 | 2116 | compound_literal = build_constructor (NULL_TREE, initializer_list); |
a723baf1 | 2117 | if (processing_template_decl) |
a723baf1 | 2118 | { |
e92fb501 MM |
2119 | TREE_TYPE (compound_literal) = type; |
2120 | /* Mark the expression as a compound literal. */ | |
2121 | TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
2122 | return compound_literal; | |
a723baf1 MM |
2123 | } |
2124 | ||
e92fb501 MM |
2125 | /* Create a temporary variable to represent the compound literal. */ |
2126 | var = create_temporary_var (type); | |
2127 | if (!current_function_decl) | |
2128 | { | |
2129 | /* If this compound-literal appears outside of a function, then | |
2130 | the corresponding variable has static storage duration, just | |
3db45ab5 | 2131 | like the variable in whose initializer it appears. */ |
e92fb501 MM |
2132 | TREE_STATIC (var) = 1; |
2133 | /* The variable has internal linkage, since there is no need to | |
2134 | reference it from another translation unit. */ | |
2135 | TREE_PUBLIC (var) = 0; | |
2136 | /* It must have a name, so that the name mangler can mangle it. */ | |
2137 | DECL_NAME (var) = make_anon_name (); | |
2138 | } | |
2139 | /* We must call pushdecl, since the gimplifier complains if the | |
105d72c5 | 2140 | variable has not been declared via a BIND_EXPR. */ |
e92fb501 MM |
2141 | pushdecl (var); |
2142 | /* Initialize the variable as we would any other variable with a | |
2143 | brace-enclosed initializer. */ | |
3db45ab5 | 2144 | cp_finish_decl (var, compound_literal, |
e92fb501 MM |
2145 | /*init_const_expr_p=*/false, |
2146 | /*asmspec_tree=*/NULL_TREE, | |
2147 | LOOKUP_ONLYCONVERTING); | |
2148 | return var; | |
a723baf1 MM |
2149 | } |
2150 | ||
5f261ba9 MM |
2151 | /* Return the declaration for the function-name variable indicated by |
2152 | ID. */ | |
2153 | ||
2154 | tree | |
2155 | finish_fname (tree id) | |
2156 | { | |
2157 | tree decl; | |
c8094d83 | 2158 | |
5f261ba9 MM |
2159 | decl = fname_decl (C_RID_CODE (id), id); |
2160 | if (processing_template_decl) | |
10b1d5e7 | 2161 | decl = DECL_NAME (decl); |
5f261ba9 MM |
2162 | return decl; |
2163 | } | |
2164 | ||
8014a339 | 2165 | /* Finish a translation unit. */ |
ce4a0391 | 2166 | |
c8094d83 | 2167 | void |
3a978d72 | 2168 | finish_translation_unit (void) |
ce4a0391 MM |
2169 | { |
2170 | /* In case there were missing closebraces, | |
2171 | get us back to the global binding level. */ | |
273a708f | 2172 | pop_everything (); |
ce4a0391 MM |
2173 | while (current_namespace != global_namespace) |
2174 | pop_namespace (); | |
0ba8a114 | 2175 | |
c6002625 | 2176 | /* Do file scope __FUNCTION__ et al. */ |
0ba8a114 | 2177 | finish_fname_decls (); |
ce4a0391 MM |
2178 | } |
2179 | ||
b4c4a9ec MM |
2180 | /* Finish a template type parameter, specified as AGGR IDENTIFIER. |
2181 | Returns the parameter. */ | |
2182 | ||
c8094d83 | 2183 | tree |
3a978d72 | 2184 | finish_template_type_parm (tree aggr, tree identifier) |
b4c4a9ec | 2185 | { |
6eabb241 | 2186 | if (aggr != class_type_node) |
b4c4a9ec | 2187 | { |
9e637a26 | 2188 | pedwarn ("template type parameters must use the keyword %<class%> or %<typename%>"); |
b4c4a9ec MM |
2189 | aggr = class_type_node; |
2190 | } | |
2191 | ||
2192 | return build_tree_list (aggr, identifier); | |
2193 | } | |
2194 | ||
2195 | /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
2196 | Returns the parameter. */ | |
2197 | ||
c8094d83 | 2198 | tree |
3a978d72 | 2199 | finish_template_template_parm (tree aggr, tree identifier) |
b4c4a9ec MM |
2200 | { |
2201 | tree decl = build_decl (TYPE_DECL, identifier, NULL_TREE); | |
2202 | tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); | |
2203 | DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
2204 | DECL_TEMPLATE_RESULT (tmpl) = decl; | |
c727aa5e | 2205 | DECL_ARTIFICIAL (decl) = 1; |
b4c4a9ec MM |
2206 | end_template_decl (); |
2207 | ||
50bc768d | 2208 | gcc_assert (DECL_TEMPLATE_PARMS (tmpl)); |
b37bf5bd | 2209 | |
85d85234 DG |
2210 | check_default_tmpl_args (decl, DECL_TEMPLATE_PARMS (tmpl), |
2211 | /*is_primary=*/true, /*is_partial=*/false, | |
2212 | /*is_friend=*/0); | |
2213 | ||
b4c4a9ec MM |
2214 | return finish_template_type_parm (aggr, tmpl); |
2215 | } | |
ce4a0391 | 2216 | |
8ba658ee MM |
2217 | /* ARGUMENT is the default-argument value for a template template |
2218 | parameter. If ARGUMENT is invalid, issue error messages and return | |
2219 | the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
2220 | ||
2221 | tree | |
2222 | check_template_template_default_arg (tree argument) | |
2223 | { | |
2224 | if (TREE_CODE (argument) != TEMPLATE_DECL | |
2225 | && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
8ba658ee MM |
2226 | && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) |
2227 | { | |
a3a503a5 | 2228 | if (TREE_CODE (argument) == TYPE_DECL) |
e488a090 VR |
2229 | error ("invalid use of type %qT as a default value for a template " |
2230 | "template-parameter", TREE_TYPE (argument)); | |
a3a503a5 GB |
2231 | else |
2232 | error ("invalid default argument for a template template parameter"); | |
8ba658ee MM |
2233 | return error_mark_node; |
2234 | } | |
2235 | ||
2236 | return argument; | |
2237 | } | |
2238 | ||
ce4a0391 MM |
2239 | /* Begin a class definition, as indicated by T. */ |
2240 | ||
2241 | tree | |
b9e75696 | 2242 | begin_class_definition (tree t, tree attributes) |
ce4a0391 | 2243 | { |
7437519c ZW |
2244 | if (t == error_mark_node) |
2245 | return error_mark_node; | |
2246 | ||
522d6614 NS |
2247 | if (processing_template_parmlist) |
2248 | { | |
a82e1a7d | 2249 | error ("definition of %q#T inside template parameter list", t); |
522d6614 NS |
2250 | return error_mark_node; |
2251 | } | |
47ee8904 MM |
2252 | /* A non-implicit typename comes from code like: |
2253 | ||
2254 | template <typename T> struct A { | |
0cbd7506 | 2255 | template <typename U> struct A<T>::B ... |
47ee8904 MM |
2256 | |
2257 | This is erroneous. */ | |
2258 | else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2259 | { | |
a82e1a7d | 2260 | error ("invalid definition of qualified type %qT", t); |
47ee8904 MM |
2261 | t = error_mark_node; |
2262 | } | |
2263 | ||
9e1e64ec | 2264 | if (t == error_mark_node || ! MAYBE_CLASS_TYPE_P (t)) |
ce4a0391 | 2265 | { |
9e1e64ec | 2266 | t = make_class_type (RECORD_TYPE); |
bd3d082e | 2267 | pushtag (make_anon_name (), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2268 | } |
830fcda8 | 2269 | |
b4f70b3d | 2270 | /* Update the location of the decl. */ |
f31686a3 | 2271 | DECL_SOURCE_LOCATION (TYPE_NAME (t)) = input_location; |
c8094d83 | 2272 | |
4c571114 | 2273 | if (TYPE_BEING_DEFINED (t)) |
ce4a0391 | 2274 | { |
9e1e64ec | 2275 | t = make_class_type (TREE_CODE (t)); |
bd3d082e | 2276 | pushtag (TYPE_IDENTIFIER (t), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2277 | } |
ff350acd | 2278 | maybe_process_partial_specialization (t); |
29370796 | 2279 | pushclass (t); |
ce4a0391 | 2280 | TYPE_BEING_DEFINED (t) = 1; |
b9e75696 JM |
2281 | |
2282 | cplus_decl_attributes (&t, attributes, (int) ATTR_FLAG_TYPE_IN_PLACE); | |
2283 | ||
c0694c4b MM |
2284 | if (flag_pack_struct) |
2285 | { | |
2286 | tree v; | |
2287 | TYPE_PACKED (t) = 1; | |
2288 | /* Even though the type is being defined for the first time | |
2289 | here, there might have been a forward declaration, so there | |
2290 | might be cv-qualified variants of T. */ | |
2291 | for (v = TYPE_NEXT_VARIANT (t); v; v = TYPE_NEXT_VARIANT (v)) | |
2292 | TYPE_PACKED (v) = 1; | |
2293 | } | |
ce4a0391 MM |
2294 | /* Reset the interface data, at the earliest possible |
2295 | moment, as it might have been set via a class foo; | |
2296 | before. */ | |
1951a1b6 JM |
2297 | if (! TYPE_ANONYMOUS_P (t)) |
2298 | { | |
c533e34d | 2299 | struct c_fileinfo *finfo = get_fileinfo (input_filename); |
5d709b00 | 2300 | CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only; |
1951a1b6 | 2301 | SET_CLASSTYPE_INTERFACE_UNKNOWN_X |
5d709b00 | 2302 | (t, finfo->interface_unknown); |
1951a1b6 | 2303 | } |
ce4a0391 | 2304 | reset_specialization(); |
c8094d83 | 2305 | |
b7975aed MM |
2306 | /* Make a declaration for this class in its own scope. */ |
2307 | build_self_reference (); | |
2308 | ||
830fcda8 | 2309 | return t; |
ce4a0391 MM |
2310 | } |
2311 | ||
61a127b3 MM |
2312 | /* Finish the member declaration given by DECL. */ |
2313 | ||
2314 | void | |
3a978d72 | 2315 | finish_member_declaration (tree decl) |
61a127b3 MM |
2316 | { |
2317 | if (decl == error_mark_node || decl == NULL_TREE) | |
2318 | return; | |
2319 | ||
2320 | if (decl == void_type_node) | |
2321 | /* The COMPONENT was a friend, not a member, and so there's | |
2322 | nothing for us to do. */ | |
2323 | return; | |
2324 | ||
2325 | /* We should see only one DECL at a time. */ | |
50bc768d | 2326 | gcc_assert (TREE_CHAIN (decl) == NULL_TREE); |
61a127b3 MM |
2327 | |
2328 | /* Set up access control for DECL. */ | |
c8094d83 | 2329 | TREE_PRIVATE (decl) |
61a127b3 | 2330 | = (current_access_specifier == access_private_node); |
c8094d83 | 2331 | TREE_PROTECTED (decl) |
61a127b3 MM |
2332 | = (current_access_specifier == access_protected_node); |
2333 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
2334 | { | |
17aec3eb RK |
2335 | TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); |
2336 | TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
61a127b3 MM |
2337 | } |
2338 | ||
2339 | /* Mark the DECL as a member of the current class. */ | |
4f1c5b7d | 2340 | DECL_CONTEXT (decl) = current_class_type; |
61a127b3 | 2341 | |
b1d7b1c0 | 2342 | /* Check for bare parameter packs in the member variable declaration. */ |
1ad8aeeb | 2343 | if (TREE_CODE (decl) == FIELD_DECL) |
4439d02f | 2344 | { |
7b3e2d46 | 2345 | if (check_for_bare_parameter_packs (TREE_TYPE (decl))) |
4439d02f | 2346 | TREE_TYPE (decl) = error_mark_node; |
7b3e2d46 | 2347 | if (check_for_bare_parameter_packs (DECL_ATTRIBUTES (decl))) |
4439d02f DG |
2348 | DECL_ATTRIBUTES (decl) = NULL_TREE; |
2349 | } | |
b1d7b1c0 | 2350 | |
421844e7 MM |
2351 | /* [dcl.link] |
2352 | ||
2353 | A C language linkage is ignored for the names of class members | |
2354 | and the member function type of class member functions. */ | |
2355 | if (DECL_LANG_SPECIFIC (decl) && DECL_LANGUAGE (decl) == lang_c) | |
5d2ed28c | 2356 | SET_DECL_LANGUAGE (decl, lang_cplusplus); |
421844e7 | 2357 | |
61a127b3 MM |
2358 | /* Put functions on the TYPE_METHODS list and everything else on the |
2359 | TYPE_FIELDS list. Note that these are built up in reverse order. | |
2360 | We reverse them (to obtain declaration order) in finish_struct. */ | |
c8094d83 | 2361 | if (TREE_CODE (decl) == FUNCTION_DECL |
61a127b3 MM |
2362 | || DECL_FUNCTION_TEMPLATE_P (decl)) |
2363 | { | |
2364 | /* We also need to add this function to the | |
2365 | CLASSTYPE_METHOD_VEC. */ | |
b77fe7b4 NS |
2366 | if (add_method (current_class_type, decl, NULL_TREE)) |
2367 | { | |
2368 | TREE_CHAIN (decl) = TYPE_METHODS (current_class_type); | |
2369 | TYPE_METHODS (current_class_type) = decl; | |
f139561c | 2370 | |
b77fe7b4 NS |
2371 | maybe_add_class_template_decl_list (current_class_type, decl, |
2372 | /*friend_p=*/0); | |
2373 | } | |
61a127b3 | 2374 | } |
f139561c | 2375 | /* Enter the DECL into the scope of the class. */ |
98ed9dae | 2376 | else if ((TREE_CODE (decl) == USING_DECL && !DECL_DEPENDENT_P (decl)) |
399dedb9 | 2377 | || pushdecl_class_level (decl)) |
61a127b3 MM |
2378 | { |
2379 | /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
2380 | go at the beginning. The reason is that lookup_field_1 | |
2381 | searches the list in order, and we want a field name to | |
2382 | override a type name so that the "struct stat hack" will | |
2383 | work. In particular: | |
2384 | ||
2385 | struct S { enum E { }; int E } s; | |
2386 | s.E = 3; | |
2387 | ||
0e339752 | 2388 | is valid. In addition, the FIELD_DECLs must be maintained in |
61a127b3 MM |
2389 | declaration order so that class layout works as expected. |
2390 | However, we don't need that order until class layout, so we | |
2391 | save a little time by putting FIELD_DECLs on in reverse order | |
2392 | here, and then reversing them in finish_struct_1. (We could | |
2393 | also keep a pointer to the correct insertion points in the | |
2394 | list.) */ | |
2395 | ||
2396 | if (TREE_CODE (decl) == TYPE_DECL) | |
c8094d83 | 2397 | TYPE_FIELDS (current_class_type) |
61a127b3 MM |
2398 | = chainon (TYPE_FIELDS (current_class_type), decl); |
2399 | else | |
2400 | { | |
2401 | TREE_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
2402 | TYPE_FIELDS (current_class_type) = decl; | |
2403 | } | |
8f032717 | 2404 | |
c8094d83 | 2405 | maybe_add_class_template_decl_list (current_class_type, decl, |
f139561c | 2406 | /*friend_p=*/0); |
61a127b3 | 2407 | } |
5e2f4cd2 MM |
2408 | |
2409 | if (pch_file) | |
2410 | note_decl_for_pch (decl); | |
2411 | } | |
2412 | ||
2413 | /* DECL has been declared while we are building a PCH file. Perform | |
2414 | actions that we might normally undertake lazily, but which can be | |
2415 | performed now so that they do not have to be performed in | |
2416 | translation units which include the PCH file. */ | |
2417 | ||
2418 | void | |
2419 | note_decl_for_pch (tree decl) | |
2420 | { | |
2421 | gcc_assert (pch_file); | |
2422 | ||
5e2f4cd2 MM |
2423 | /* There's a good chance that we'll have to mangle names at some |
2424 | point, even if only for emission in debugging information. */ | |
ec0897de JM |
2425 | if ((TREE_CODE (decl) == VAR_DECL |
2426 | || TREE_CODE (decl) == FUNCTION_DECL) | |
2427 | && !processing_template_decl) | |
5e2f4cd2 | 2428 | mangle_decl (decl); |
61a127b3 MM |
2429 | } |
2430 | ||
306ef644 | 2431 | /* Finish processing a complete template declaration. The PARMS are |
36a117a5 MM |
2432 | the template parameters. */ |
2433 | ||
2434 | void | |
3a978d72 | 2435 | finish_template_decl (tree parms) |
36a117a5 MM |
2436 | { |
2437 | if (parms) | |
2438 | end_template_decl (); | |
2439 | else | |
2440 | end_specialization (); | |
2441 | } | |
2442 | ||
509fc277 | 2443 | /* Finish processing a template-id (which names a type) of the form |
36a117a5 | 2444 | NAME < ARGS >. Return the TYPE_DECL for the type named by the |
838dfd8a | 2445 | template-id. If ENTERING_SCOPE is nonzero we are about to enter |
36a117a5 MM |
2446 | the scope of template-id indicated. */ |
2447 | ||
2448 | tree | |
3a978d72 | 2449 | finish_template_type (tree name, tree args, int entering_scope) |
36a117a5 MM |
2450 | { |
2451 | tree decl; | |
2452 | ||
2453 | decl = lookup_template_class (name, args, | |
42eaed49 | 2454 | NULL_TREE, NULL_TREE, entering_scope, |
23fca1f5 | 2455 | tf_warning_or_error | tf_user); |
36a117a5 MM |
2456 | if (decl != error_mark_node) |
2457 | decl = TYPE_STUB_DECL (decl); | |
2458 | ||
2459 | return decl; | |
2460 | } | |
648f19f6 | 2461 | |
ea6021e8 MM |
2462 | /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. |
2463 | Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
2464 | BASE_CLASS, or NULL_TREE if an error occurred. The | |
aba649ba | 2465 | ACCESS_SPECIFIER is one of |
809e3e7f NS |
2466 | access_{default,public,protected_private}_node. For a virtual base |
2467 | we set TREE_TYPE. */ | |
ea6021e8 | 2468 | |
c8094d83 | 2469 | tree |
dbbf88d1 | 2470 | finish_base_specifier (tree base, tree access, bool virtual_p) |
ea6021e8 | 2471 | { |
ea6021e8 MM |
2472 | tree result; |
2473 | ||
dbbf88d1 | 2474 | if (base == error_mark_node) |
acb044ee GDR |
2475 | { |
2476 | error ("invalid base-class specification"); | |
2477 | result = NULL_TREE; | |
2478 | } | |
9e1e64ec PC |
2479 | else if (! MAYBE_CLASS_TYPE_P (base)) |
2480 | { | |
2481 | error ("%qT is not a class type", base); | |
2482 | result = NULL_TREE; | |
2483 | } | |
ea6021e8 | 2484 | else |
bb92901d | 2485 | { |
dbbf88d1 | 2486 | if (cp_type_quals (base) != 0) |
0cbd7506 MS |
2487 | { |
2488 | error ("base class %qT has cv qualifiers", base); | |
2489 | base = TYPE_MAIN_VARIANT (base); | |
2490 | } | |
dbbf88d1 | 2491 | result = build_tree_list (access, base); |
809e3e7f NS |
2492 | if (virtual_p) |
2493 | TREE_TYPE (result) = integer_type_node; | |
bb92901d | 2494 | } |
ea6021e8 MM |
2495 | |
2496 | return result; | |
2497 | } | |
61a127b3 | 2498 | |
8f78f01f MM |
2499 | /* Issue a diagnostic that NAME cannot be found in SCOPE. DECL is |
2500 | what we found when we tried to do the lookup. */ | |
22038b2c NS |
2501 | |
2502 | void | |
8f78f01f | 2503 | qualified_name_lookup_error (tree scope, tree name, tree decl) |
22038b2c | 2504 | { |
1e1b4b37 VR |
2505 | if (scope == error_mark_node) |
2506 | ; /* We already complained. */ | |
2507 | else if (TYPE_P (scope)) | |
22038b2c NS |
2508 | { |
2509 | if (!COMPLETE_TYPE_P (scope)) | |
a82e1a7d | 2510 | error ("incomplete type %qT used in nested name specifier", scope); |
8f78f01f MM |
2511 | else if (TREE_CODE (decl) == TREE_LIST) |
2512 | { | |
a82e1a7d | 2513 | error ("reference to %<%T::%D%> is ambiguous", scope, name); |
8f78f01f MM |
2514 | print_candidates (decl); |
2515 | } | |
22038b2c | 2516 | else |
a82e1a7d | 2517 | error ("%qD is not a member of %qT", name, scope); |
22038b2c NS |
2518 | } |
2519 | else if (scope != global_namespace) | |
a82e1a7d | 2520 | error ("%qD is not a member of %qD", name, scope); |
22038b2c | 2521 | else |
a82e1a7d | 2522 | error ("%<::%D%> has not been declared", name); |
22038b2c | 2523 | } |
c8094d83 | 2524 | |
eff3a276 MM |
2525 | /* If FNS is a member function, a set of member functions, or a |
2526 | template-id referring to one or more member functions, return a | |
2527 | BASELINK for FNS, incorporating the current access context. | |
2528 | Otherwise, return FNS unchanged. */ | |
2529 | ||
2530 | tree | |
2531 | baselink_for_fns (tree fns) | |
2532 | { | |
2533 | tree fn; | |
2534 | tree cl; | |
2535 | ||
2536 | if (BASELINK_P (fns) | |
eff3a276 MM |
2537 | || error_operand_p (fns)) |
2538 | return fns; | |
2539 | ||
2540 | fn = fns; | |
2541 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
2542 | fn = TREE_OPERAND (fn, 0); | |
2543 | fn = get_first_fn (fn); | |
2544 | if (!DECL_FUNCTION_MEMBER_P (fn)) | |
2545 | return fns; | |
2546 | ||
2547 | cl = currently_open_derived_class (DECL_CONTEXT (fn)); | |
2548 | if (!cl) | |
2549 | cl = DECL_CONTEXT (fn); | |
2550 | cl = TYPE_BINFO (cl); | |
2551 | return build_baselink (cl, cl, fns, /*optype=*/NULL_TREE); | |
2552 | } | |
2553 | ||
b3445994 MM |
2554 | /* ID_EXPRESSION is a representation of parsed, but unprocessed, |
2555 | id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
2556 | if non-NULL, is the type or namespace used to explicitly qualify | |
2557 | ID_EXPRESSION. DECL is the entity to which that name has been | |
c8094d83 | 2558 | resolved. |
b3445994 MM |
2559 | |
2560 | *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
2561 | constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
2562 | be set to true if this expression isn't permitted in a | |
2563 | constant-expression, but it is otherwise not set by this function. | |
2564 | *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
2565 | constant-expression, but a non-constant expression is also | |
2566 | permissible. | |
2567 | ||
02ed62dd MM |
2568 | DONE is true if this expression is a complete postfix-expression; |
2569 | it is false if this expression is followed by '->', '[', '(', etc. | |
2570 | ADDRESS_P is true iff this expression is the operand of '&'. | |
2571 | TEMPLATE_P is true iff the qualified-id was of the form | |
2572 | "A::template B". TEMPLATE_ARG_P is true iff this qualified name | |
2573 | appears as a template argument. | |
2574 | ||
b3445994 MM |
2575 | If an error occurs, and it is the kind of error that might cause |
2576 | the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
2577 | is the caller's responsibility to issue the message. *ERROR_MSG | |
2578 | will be a string with static storage duration, so the caller need | |
2579 | not "free" it. | |
2580 | ||
2581 | Return an expression for the entity, after issuing appropriate | |
2582 | diagnostics. This function is also responsible for transforming a | |
2583 | reference to a non-static member into a COMPONENT_REF that makes | |
c8094d83 | 2584 | the use of "this" explicit. |
b3445994 MM |
2585 | |
2586 | Upon return, *IDK will be filled in appropriately. */ | |
2587 | ||
2588 | tree | |
c8094d83 | 2589 | finish_id_expression (tree id_expression, |
b3445994 MM |
2590 | tree decl, |
2591 | tree scope, | |
2592 | cp_id_kind *idk, | |
67c03833 JM |
2593 | bool integral_constant_expression_p, |
2594 | bool allow_non_integral_constant_expression_p, | |
2595 | bool *non_integral_constant_expression_p, | |
02ed62dd MM |
2596 | bool template_p, |
2597 | bool done, | |
2598 | bool address_p, | |
2599 | bool template_arg_p, | |
b3445994 MM |
2600 | const char **error_msg) |
2601 | { | |
2602 | /* Initialize the output parameters. */ | |
2603 | *idk = CP_ID_KIND_NONE; | |
2604 | *error_msg = NULL; | |
2605 | ||
2606 | if (id_expression == error_mark_node) | |
2607 | return error_mark_node; | |
2608 | /* If we have a template-id, then no further lookup is | |
2609 | required. If the template-id was for a template-class, we | |
2610 | will sometimes have a TYPE_DECL at this point. */ | |
2611 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
ee935db4 | 2612 | || TREE_CODE (decl) == TYPE_DECL) |
b3445994 MM |
2613 | ; |
2614 | /* Look up the name. */ | |
c8094d83 | 2615 | else |
b3445994 MM |
2616 | { |
2617 | if (decl == error_mark_node) | |
2618 | { | |
2619 | /* Name lookup failed. */ | |
c8094d83 MS |
2620 | if (scope |
2621 | && (!TYPE_P (scope) | |
4546865e MM |
2622 | || (!dependent_type_p (scope) |
2623 | && !(TREE_CODE (id_expression) == IDENTIFIER_NODE | |
2624 | && IDENTIFIER_TYPENAME_P (id_expression) | |
2625 | && dependent_type_p (TREE_TYPE (id_expression)))))) | |
b3445994 | 2626 | { |
4546865e MM |
2627 | /* If the qualifying type is non-dependent (and the name |
2628 | does not name a conversion operator to a dependent | |
2629 | type), issue an error. */ | |
8f78f01f | 2630 | qualified_name_lookup_error (scope, id_expression, decl); |
b3445994 MM |
2631 | return error_mark_node; |
2632 | } | |
2633 | else if (!scope) | |
2634 | { | |
2635 | /* It may be resolved via Koenig lookup. */ | |
2636 | *idk = CP_ID_KIND_UNQUALIFIED; | |
2637 | return id_expression; | |
2638 | } | |
4546865e MM |
2639 | else |
2640 | decl = id_expression; | |
b3445994 MM |
2641 | } |
2642 | /* If DECL is a variable that would be out of scope under | |
2643 | ANSI/ISO rules, but in scope in the ARM, name lookup | |
2644 | will succeed. Issue a diagnostic here. */ | |
2645 | else | |
2646 | decl = check_for_out_of_scope_variable (decl); | |
2647 | ||
2648 | /* Remember that the name was used in the definition of | |
2649 | the current class so that we can check later to see if | |
2650 | the meaning would have been different after the class | |
2651 | was entirely defined. */ | |
2652 | if (!scope && decl != error_mark_node) | |
2653 | maybe_note_name_used_in_class (id_expression, decl); | |
8ca4bf25 MM |
2654 | |
2655 | /* Disallow uses of local variables from containing functions. */ | |
2656 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) | |
2657 | { | |
2658 | tree context = decl_function_context (decl); | |
2659 | if (context != NULL_TREE && context != current_function_decl | |
2660 | && ! TREE_STATIC (decl)) | |
2661 | { | |
2662 | error (TREE_CODE (decl) == VAR_DECL | |
2663 | ? "use of %<auto%> variable from containing function" | |
2664 | : "use of parameter from containing function"); | |
2665 | error (" %q+#D declared here", decl); | |
2666 | return error_mark_node; | |
2667 | } | |
2668 | } | |
b3445994 MM |
2669 | } |
2670 | ||
2671 | /* If we didn't find anything, or what we found was a type, | |
2672 | then this wasn't really an id-expression. */ | |
2673 | if (TREE_CODE (decl) == TEMPLATE_DECL | |
2674 | && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
2675 | { | |
2676 | *error_msg = "missing template arguments"; | |
2677 | return error_mark_node; | |
2678 | } | |
2679 | else if (TREE_CODE (decl) == TYPE_DECL | |
2680 | || TREE_CODE (decl) == NAMESPACE_DECL) | |
2681 | { | |
2682 | *error_msg = "expected primary-expression"; | |
2683 | return error_mark_node; | |
2684 | } | |
2685 | ||
2686 | /* If the name resolved to a template parameter, there is no | |
931a9c05 GB |
2687 | need to look it up again later. */ |
2688 | if ((TREE_CODE (decl) == CONST_DECL && DECL_TEMPLATE_PARM_P (decl)) | |
2689 | || TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
b3445994 | 2690 | { |
db24eb1f | 2691 | tree r; |
c8094d83 | 2692 | |
b3445994 | 2693 | *idk = CP_ID_KIND_NONE; |
931a9c05 GB |
2694 | if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX) |
2695 | decl = TEMPLATE_PARM_DECL (decl); | |
db24eb1f | 2696 | r = convert_from_reference (DECL_INITIAL (decl)); |
c8094d83 MS |
2697 | |
2698 | if (integral_constant_expression_p | |
68deab91 | 2699 | && !dependent_type_p (TREE_TYPE (decl)) |
db24eb1f | 2700 | && !(INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (r)))) |
931a9c05 | 2701 | { |
67c03833 | 2702 | if (!allow_non_integral_constant_expression_p) |
a82e1a7d | 2703 | error ("template parameter %qD of type %qT is not allowed in " |
931a9c05 GB |
2704 | "an integral constant expression because it is not of " |
2705 | "integral or enumeration type", decl, TREE_TYPE (decl)); | |
67c03833 | 2706 | *non_integral_constant_expression_p = true; |
931a9c05 | 2707 | } |
db24eb1f | 2708 | return r; |
931a9c05 | 2709 | } |
c8094d83 | 2710 | /* Similarly, we resolve enumeration constants to their |
931a9c05 GB |
2711 | underlying values. */ |
2712 | else if (TREE_CODE (decl) == CONST_DECL) | |
2713 | { | |
2714 | *idk = CP_ID_KIND_NONE; | |
2715 | if (!processing_template_decl) | |
6193b8b7 DJ |
2716 | { |
2717 | used_types_insert (TREE_TYPE (decl)); | |
2718 | return DECL_INITIAL (decl); | |
2719 | } | |
b3445994 MM |
2720 | return decl; |
2721 | } | |
2722 | else | |
2723 | { | |
2724 | bool dependent_p; | |
2725 | ||
2726 | /* If the declaration was explicitly qualified indicate | |
2727 | that. The semantics of `A::f(3)' are different than | |
2728 | `f(3)' if `f' is virtual. */ | |
c8094d83 | 2729 | *idk = (scope |
b3445994 MM |
2730 | ? CP_ID_KIND_QUALIFIED |
2731 | : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2732 | ? CP_ID_KIND_TEMPLATE_ID | |
2733 | : CP_ID_KIND_UNQUALIFIED)); | |
2734 | ||
2735 | ||
2736 | /* [temp.dep.expr] | |
2737 | ||
2738 | An id-expression is type-dependent if it contains an | |
2739 | identifier that was declared with a dependent type. | |
2740 | ||
b3445994 MM |
2741 | The standard is not very specific about an id-expression that |
2742 | names a set of overloaded functions. What if some of them | |
2743 | have dependent types and some of them do not? Presumably, | |
2744 | such a name should be treated as a dependent name. */ | |
2745 | /* Assume the name is not dependent. */ | |
2746 | dependent_p = false; | |
2747 | if (!processing_template_decl) | |
2748 | /* No names are dependent outside a template. */ | |
2749 | ; | |
2750 | /* A template-id where the name of the template was not resolved | |
2751 | is definitely dependent. */ | |
2752 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
c8094d83 | 2753 | && (TREE_CODE (TREE_OPERAND (decl, 0)) |
b3445994 MM |
2754 | == IDENTIFIER_NODE)) |
2755 | dependent_p = true; | |
2756 | /* For anything except an overloaded function, just check its | |
2757 | type. */ | |
2758 | else if (!is_overloaded_fn (decl)) | |
c8094d83 | 2759 | dependent_p |
b3445994 MM |
2760 | = dependent_type_p (TREE_TYPE (decl)); |
2761 | /* For a set of overloaded functions, check each of the | |
2762 | functions. */ | |
2763 | else | |
2764 | { | |
2765 | tree fns = decl; | |
2766 | ||
2767 | if (BASELINK_P (fns)) | |
2768 | fns = BASELINK_FUNCTIONS (fns); | |
2769 | ||
2770 | /* For a template-id, check to see if the template | |
2771 | arguments are dependent. */ | |
2772 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
2773 | { | |
2774 | tree args = TREE_OPERAND (fns, 1); | |
2775 | dependent_p = any_dependent_template_arguments_p (args); | |
2776 | /* The functions are those referred to by the | |
2777 | template-id. */ | |
2778 | fns = TREE_OPERAND (fns, 0); | |
2779 | } | |
2780 | ||
2781 | /* If there are no dependent template arguments, go through | |
cd0be382 | 2782 | the overloaded functions. */ |
b3445994 MM |
2783 | while (fns && !dependent_p) |
2784 | { | |
2785 | tree fn = OVL_CURRENT (fns); | |
2786 | ||
2787 | /* Member functions of dependent classes are | |
2788 | dependent. */ | |
2789 | if (TREE_CODE (fn) == FUNCTION_DECL | |
2790 | && type_dependent_expression_p (fn)) | |
2791 | dependent_p = true; | |
2792 | else if (TREE_CODE (fn) == TEMPLATE_DECL | |
2793 | && dependent_template_p (fn)) | |
2794 | dependent_p = true; | |
2795 | ||
2796 | fns = OVL_NEXT (fns); | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | /* If the name was dependent on a template parameter, we will | |
2801 | resolve the name at instantiation time. */ | |
2802 | if (dependent_p) | |
2803 | { | |
2804 | /* Create a SCOPE_REF for qualified names, if the scope is | |
2805 | dependent. */ | |
2806 | if (scope) | |
2807 | { | |
b3445994 MM |
2808 | /* Since this name was dependent, the expression isn't |
2809 | constant -- yet. No error is issued because it might | |
2810 | be constant when things are instantiated. */ | |
67c03833 JM |
2811 | if (integral_constant_expression_p) |
2812 | *non_integral_constant_expression_p = true; | |
02ed62dd MM |
2813 | if (TYPE_P (scope)) |
2814 | { | |
2815 | if (address_p && done) | |
2816 | decl = finish_qualified_id_expr (scope, decl, | |
2817 | done, address_p, | |
2818 | template_p, | |
2819 | template_arg_p); | |
2820 | else if (dependent_type_p (scope)) | |
2821 | decl = build_qualified_name (/*type=*/NULL_TREE, | |
2822 | scope, | |
2823 | id_expression, | |
2824 | template_p); | |
2825 | else if (DECL_P (decl)) | |
2826 | decl = build_qualified_name (TREE_TYPE (decl), | |
2827 | scope, | |
2828 | id_expression, | |
2829 | template_p); | |
2830 | } | |
2831 | if (TREE_TYPE (decl)) | |
2832 | decl = convert_from_reference (decl); | |
2833 | return decl; | |
b3445994 MM |
2834 | } |
2835 | /* A TEMPLATE_ID already contains all the information we | |
2836 | need. */ | |
2837 | if (TREE_CODE (id_expression) == TEMPLATE_ID_EXPR) | |
2838 | return id_expression; | |
10b1d5e7 | 2839 | *idk = CP_ID_KIND_UNQUALIFIED_DEPENDENT; |
5a98fa7b MM |
2840 | /* If we found a variable, then name lookup during the |
2841 | instantiation will always resolve to the same VAR_DECL | |
2842 | (or an instantiation thereof). */ | |
3c398f34 MM |
2843 | if (TREE_CODE (decl) == VAR_DECL |
2844 | || TREE_CODE (decl) == PARM_DECL) | |
db24eb1f | 2845 | return convert_from_reference (decl); |
bad1f462 KL |
2846 | /* The same is true for FIELD_DECL, but we also need to |
2847 | make sure that the syntax is correct. */ | |
2848 | else if (TREE_CODE (decl) == FIELD_DECL) | |
a26ddf11 KL |
2849 | { |
2850 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2851 | Access checking has been performed during name lookup | |
2852 | already. Turn off checking to avoid duplicate errors. */ | |
2853 | push_deferring_access_checks (dk_no_check); | |
2854 | decl = finish_non_static_data_member | |
2855 | (decl, current_class_ref, | |
2856 | /*qualifying_scope=*/NULL_TREE); | |
2857 | pop_deferring_access_checks (); | |
2858 | return decl; | |
2859 | } | |
10b1d5e7 | 2860 | return id_expression; |
b3445994 MM |
2861 | } |
2862 | ||
2863 | /* Only certain kinds of names are allowed in constant | |
0cbd7506 MS |
2864 | expression. Enumerators and template parameters have already |
2865 | been handled above. */ | |
c30b4add | 2866 | if (integral_constant_expression_p |
100d337a MA |
2867 | && ! DECL_INTEGRAL_CONSTANT_VAR_P (decl) |
2868 | && ! builtin_valid_in_constant_expr_p (decl)) | |
b3445994 | 2869 | { |
c30b4add | 2870 | if (!allow_non_integral_constant_expression_p) |
b3445994 | 2871 | { |
a82e1a7d | 2872 | error ("%qD cannot appear in a constant-expression", decl); |
c30b4add | 2873 | return error_mark_node; |
b3445994 | 2874 | } |
c30b4add | 2875 | *non_integral_constant_expression_p = true; |
b3445994 | 2876 | } |
c8094d83 | 2877 | |
415d4636 | 2878 | if (TREE_CODE (decl) == NAMESPACE_DECL) |
9e95d15f | 2879 | { |
a82e1a7d | 2880 | error ("use of namespace %qD as expression", decl); |
9e95d15f NS |
2881 | return error_mark_node; |
2882 | } | |
2883 | else if (DECL_CLASS_TEMPLATE_P (decl)) | |
2884 | { | |
a82e1a7d | 2885 | error ("use of class template %qT as expression", decl); |
9e95d15f NS |
2886 | return error_mark_node; |
2887 | } | |
2888 | else if (TREE_CODE (decl) == TREE_LIST) | |
2889 | { | |
2890 | /* Ambiguous reference to base members. */ | |
a82e1a7d | 2891 | error ("request for member %qD is ambiguous in " |
9e95d15f NS |
2892 | "multiple inheritance lattice", id_expression); |
2893 | print_candidates (decl); | |
2894 | return error_mark_node; | |
2895 | } | |
415d4636 MM |
2896 | |
2897 | /* Mark variable-like entities as used. Functions are similarly | |
2898 | marked either below or after overload resolution. */ | |
2899 | if (TREE_CODE (decl) == VAR_DECL | |
2900 | || TREE_CODE (decl) == PARM_DECL | |
2901 | || TREE_CODE (decl) == RESULT_DECL) | |
2902 | mark_used (decl); | |
2903 | ||
2904 | if (scope) | |
2905 | { | |
c8094d83 | 2906 | decl = (adjust_result_of_qualified_name_lookup |
415d4636 | 2907 | (decl, scope, current_class_type)); |
e20bcc5e JH |
2908 | |
2909 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
2910 | mark_used (decl); | |
2911 | ||
415d4636 | 2912 | if (TREE_CODE (decl) == FIELD_DECL || BASELINK_P (decl)) |
02ed62dd MM |
2913 | decl = finish_qualified_id_expr (scope, |
2914 | decl, | |
2915 | done, | |
2916 | address_p, | |
2917 | template_p, | |
2918 | template_arg_p); | |
db24eb1f NS |
2919 | else |
2920 | { | |
2921 | tree r = convert_from_reference (decl); | |
c8094d83 | 2922 | |
02ed62dd MM |
2923 | if (processing_template_decl && TYPE_P (scope)) |
2924 | r = build_qualified_name (TREE_TYPE (r), | |
2925 | scope, decl, | |
2926 | template_p); | |
db24eb1f NS |
2927 | decl = r; |
2928 | } | |
415d4636 | 2929 | } |
9e95d15f | 2930 | else if (TREE_CODE (decl) == FIELD_DECL) |
a26ddf11 KL |
2931 | { |
2932 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2933 | Access checking has been performed during name lookup | |
2934 | already. Turn off checking to avoid duplicate errors. */ | |
2935 | push_deferring_access_checks (dk_no_check); | |
2936 | decl = finish_non_static_data_member (decl, current_class_ref, | |
2937 | /*qualifying_scope=*/NULL_TREE); | |
2938 | pop_deferring_access_checks (); | |
2939 | } | |
9e95d15f NS |
2940 | else if (is_overloaded_fn (decl)) |
2941 | { | |
eff3a276 | 2942 | tree first_fn; |
b3445994 | 2943 | |
eff3a276 MM |
2944 | first_fn = decl; |
2945 | if (TREE_CODE (first_fn) == TEMPLATE_ID_EXPR) | |
2946 | first_fn = TREE_OPERAND (first_fn, 0); | |
2947 | first_fn = get_first_fn (first_fn); | |
9e95d15f NS |
2948 | if (TREE_CODE (first_fn) == TEMPLATE_DECL) |
2949 | first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
415d4636 MM |
2950 | |
2951 | if (!really_overloaded_fn (decl)) | |
2952 | mark_used (first_fn); | |
2953 | ||
02ed62dd MM |
2954 | if (!template_arg_p |
2955 | && TREE_CODE (first_fn) == FUNCTION_DECL | |
821eaf2a MM |
2956 | && DECL_FUNCTION_MEMBER_P (first_fn) |
2957 | && !shared_member_p (decl)) | |
9e95d15f NS |
2958 | { |
2959 | /* A set of member functions. */ | |
2960 | decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
02ed62dd | 2961 | return finish_class_member_access_expr (decl, id_expression, |
5ade1ed2 DG |
2962 | /*template_p=*/false, |
2963 | tf_warning_or_error); | |
9e95d15f | 2964 | } |
eff3a276 MM |
2965 | |
2966 | decl = baselink_for_fns (decl); | |
9e95d15f NS |
2967 | } |
2968 | else | |
2969 | { | |
9e95d15f | 2970 | if (DECL_P (decl) && DECL_NONLOCAL (decl) |
24f58e74 | 2971 | && DECL_CLASS_SCOPE_P (decl)) |
9e95d15f | 2972 | { |
24f58e74 PC |
2973 | tree context = context_for_name_lookup (decl); |
2974 | if (context != current_class_type) | |
2975 | { | |
2976 | tree path = currently_open_derived_class (context); | |
2977 | perform_or_defer_access_check (TYPE_BINFO (path), | |
2978 | decl, decl); | |
2979 | } | |
9e95d15f | 2980 | } |
c8094d83 | 2981 | |
db24eb1f | 2982 | decl = convert_from_reference (decl); |
9e95d15f | 2983 | } |
b3445994 MM |
2984 | } |
2985 | ||
2986 | if (TREE_DEPRECATED (decl)) | |
2987 | warn_deprecated_use (decl); | |
2988 | ||
2989 | return decl; | |
2990 | } | |
2991 | ||
0213a355 JM |
2992 | /* Implement the __typeof keyword: Return the type of EXPR, suitable for |
2993 | use as a type-specifier. */ | |
2994 | ||
b894fc05 | 2995 | tree |
3a978d72 | 2996 | finish_typeof (tree expr) |
b894fc05 | 2997 | { |
65a5559b MM |
2998 | tree type; |
2999 | ||
dffbbe80 | 3000 | if (type_dependent_expression_p (expr)) |
b894fc05 | 3001 | { |
9e1e64ec | 3002 | type = cxx_make_type (TYPEOF_TYPE); |
eb34af89 | 3003 | TYPEOF_TYPE_EXPR (type) = expr; |
3ad6a8e1 | 3004 | SET_TYPE_STRUCTURAL_EQUALITY (type); |
b894fc05 | 3005 | |
65a5559b | 3006 | return type; |
b894fc05 JM |
3007 | } |
3008 | ||
3c38f0ff | 3009 | type = unlowered_expr_type (expr); |
65a5559b MM |
3010 | |
3011 | if (!type || type == unknown_type_node) | |
3012 | { | |
a82e1a7d | 3013 | error ("type of %qE is unknown", expr); |
65a5559b MM |
3014 | return error_mark_node; |
3015 | } | |
3016 | ||
3017 | return type; | |
b894fc05 | 3018 | } |
558475f0 | 3019 | |
c291f8b1 VR |
3020 | /* Perform C++-specific checks for __builtin_offsetof before calling |
3021 | fold_offsetof. */ | |
3022 | ||
3023 | tree | |
3024 | finish_offsetof (tree expr) | |
3025 | { | |
4c65a534 VR |
3026 | if (TREE_CODE (expr) == PSEUDO_DTOR_EXPR) |
3027 | { | |
3028 | error ("cannot apply %<offsetof%> to destructor %<~%T%>", | |
3029 | TREE_OPERAND (expr, 2)); | |
3030 | return error_mark_node; | |
3031 | } | |
c291f8b1 VR |
3032 | if (TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE |
3033 | || TREE_CODE (TREE_TYPE (expr)) == METHOD_TYPE | |
3034 | || TREE_CODE (TREE_TYPE (expr)) == UNKNOWN_TYPE) | |
3035 | { | |
1916c916 VR |
3036 | if (TREE_CODE (expr) == COMPONENT_REF |
3037 | || TREE_CODE (expr) == COMPOUND_EXPR) | |
0a9367cb VR |
3038 | expr = TREE_OPERAND (expr, 1); |
3039 | error ("cannot apply %<offsetof%> to member function %qD", expr); | |
c291f8b1 VR |
3040 | return error_mark_node; |
3041 | } | |
6d4d7b0e | 3042 | return fold_offsetof (expr, NULL_TREE); |
c291f8b1 VR |
3043 | } |
3044 | ||
3eb24f73 | 3045 | /* Called from expand_body via walk_tree. Replace all AGGR_INIT_EXPRs |
6de9cd9a | 3046 | with equivalent CALL_EXPRs. */ |
3eb24f73 MM |
3047 | |
3048 | static tree | |
c8094d83 | 3049 | simplify_aggr_init_exprs_r (tree* tp, |
0cbd7506 MS |
3050 | int* walk_subtrees, |
3051 | void* data ATTRIBUTE_UNUSED) | |
3eb24f73 | 3052 | { |
22e92ac3 MM |
3053 | /* We don't need to walk into types; there's nothing in a type that |
3054 | needs simplification. (And, furthermore, there are places we | |
3055 | actively don't want to go. For example, we don't want to wander | |
3056 | into the default arguments for a FUNCTION_DECL that appears in a | |
3057 | CALL_EXPR.) */ | |
9eeb200f | 3058 | if (TYPE_P (*tp)) |
22e92ac3 MM |
3059 | { |
3060 | *walk_subtrees = 0; | |
3061 | return NULL_TREE; | |
3062 | } | |
3063 | /* Only AGGR_INIT_EXPRs are interesting. */ | |
9eeb200f | 3064 | else if (TREE_CODE (*tp) != AGGR_INIT_EXPR) |
3eb24f73 MM |
3065 | return NULL_TREE; |
3066 | ||
9eeb200f JM |
3067 | simplify_aggr_init_expr (tp); |
3068 | ||
3069 | /* Keep iterating. */ | |
3070 | return NULL_TREE; | |
3071 | } | |
3072 | ||
3073 | /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This | |
3074 | function is broken out from the above for the benefit of the tree-ssa | |
3075 | project. */ | |
3076 | ||
3077 | void | |
3078 | simplify_aggr_init_expr (tree *tp) | |
3079 | { | |
3080 | tree aggr_init_expr = *tp; | |
3081 | ||
3eb24f73 | 3082 | /* Form an appropriate CALL_EXPR. */ |
5039610b SL |
3083 | tree fn = AGGR_INIT_EXPR_FN (aggr_init_expr); |
3084 | tree slot = AGGR_INIT_EXPR_SLOT (aggr_init_expr); | |
2692eb7d | 3085 | tree type = TREE_TYPE (slot); |
9eeb200f JM |
3086 | |
3087 | tree call_expr; | |
3088 | enum style_t { ctor, arg, pcc } style; | |
4977bab6 | 3089 | |
3eb24f73 | 3090 | if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) |
4977bab6 ZW |
3091 | style = ctor; |
3092 | #ifdef PCC_STATIC_STRUCT_RETURN | |
3093 | else if (1) | |
3094 | style = pcc; | |
3095 | #endif | |
4977bab6 | 3096 | else |
315fb5db NS |
3097 | { |
3098 | gcc_assert (TREE_ADDRESSABLE (type)); | |
3099 | style = arg; | |
3100 | } | |
4977bab6 | 3101 | |
5039610b SL |
3102 | call_expr = build_call_array (TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), |
3103 | fn, | |
3104 | aggr_init_expr_nargs (aggr_init_expr), | |
3105 | AGGR_INIT_EXPR_ARGP (aggr_init_expr)); | |
3106 | ||
fa47911c | 3107 | if (style == ctor) |
3eb24f73 | 3108 | { |
fa47911c JM |
3109 | /* Replace the first argument to the ctor with the address of the |
3110 | slot. */ | |
dffd7eb6 | 3111 | cxx_mark_addressable (slot); |
5039610b SL |
3112 | CALL_EXPR_ARG (call_expr, 0) = |
3113 | build1 (ADDR_EXPR, build_pointer_type (type), slot); | |
3eb24f73 | 3114 | } |
5039610b | 3115 | else if (style == arg) |
fa47911c JM |
3116 | { |
3117 | /* Just mark it addressable here, and leave the rest to | |
3118 | expand_call{,_inline}. */ | |
3119 | cxx_mark_addressable (slot); | |
3120 | CALL_EXPR_RETURN_SLOT_OPT (call_expr) = true; | |
3121 | call_expr = build2 (MODIFY_EXPR, TREE_TYPE (call_expr), slot, call_expr); | |
3122 | } | |
4977bab6 | 3123 | else if (style == pcc) |
3eb24f73 | 3124 | { |
4977bab6 ZW |
3125 | /* If we're using the non-reentrant PCC calling convention, then we |
3126 | need to copy the returned value out of the static buffer into the | |
3127 | SLOT. */ | |
78757caa | 3128 | push_deferring_access_checks (dk_no_check); |
46af705a | 3129 | call_expr = build_aggr_init (slot, call_expr, |
5ade1ed2 DG |
3130 | DIRECT_BIND | LOOKUP_ONLYCONVERTING, |
3131 | tf_warning_or_error); | |
78757caa | 3132 | pop_deferring_access_checks (); |
d17791d6 | 3133 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (slot), call_expr, slot); |
3eb24f73 | 3134 | } |
3eb24f73 | 3135 | |
3eb24f73 | 3136 | *tp = call_expr; |
3eb24f73 MM |
3137 | } |
3138 | ||
31f8e4f3 MM |
3139 | /* Emit all thunks to FN that should be emitted when FN is emitted. */ |
3140 | ||
e89d6010 | 3141 | void |
3a978d72 | 3142 | emit_associated_thunks (tree fn) |
31f8e4f3 MM |
3143 | { |
3144 | /* When we use vcall offsets, we emit thunks with the virtual | |
3145 | functions to which they thunk. The whole point of vcall offsets | |
3146 | is so that you can know statically the entire set of thunks that | |
3147 | will ever be needed for a given virtual function, thereby | |
3148 | enabling you to output all the thunks with the function itself. */ | |
3461fba7 | 3149 | if (DECL_VIRTUAL_P (fn)) |
31f8e4f3 | 3150 | { |
bb5e8a7f | 3151 | tree thunk; |
c8094d83 | 3152 | |
bb5e8a7f | 3153 | for (thunk = DECL_THUNKS (fn); thunk; thunk = TREE_CHAIN (thunk)) |
4977bab6 | 3154 | { |
e00853fd | 3155 | if (!THUNK_ALIAS (thunk)) |
4977bab6 | 3156 | { |
bb885938 NS |
3157 | use_thunk (thunk, /*emit_p=*/1); |
3158 | if (DECL_RESULT_THUNK_P (thunk)) | |
3159 | { | |
3160 | tree probe; | |
c8094d83 | 3161 | |
bb885938 NS |
3162 | for (probe = DECL_THUNKS (thunk); |
3163 | probe; probe = TREE_CHAIN (probe)) | |
3164 | use_thunk (probe, /*emit_p=*/1); | |
3165 | } | |
4977bab6 | 3166 | } |
bb885938 | 3167 | else |
50bc768d | 3168 | gcc_assert (!DECL_THUNKS (thunk)); |
4977bab6 | 3169 | } |
31f8e4f3 MM |
3170 | } |
3171 | } | |
3172 | ||
558475f0 MM |
3173 | /* Generate RTL for FN. */ |
3174 | ||
8cd2462c | 3175 | void |
5671bf27 | 3176 | expand_or_defer_fn (tree fn) |
8cd2462c JH |
3177 | { |
3178 | /* When the parser calls us after finishing the body of a template | |
c353b8e3 MM |
3179 | function, we don't really want to expand the body. */ |
3180 | if (processing_template_decl) | |
8cd2462c JH |
3181 | { |
3182 | /* Normally, collection only occurs in rest_of_compilation. So, | |
3183 | if we don't collect here, we never collect junk generated | |
3184 | during the processing of templates until we hit a | |
27250734 MM |
3185 | non-template function. It's not safe to do this inside a |
3186 | nested class, though, as the parser may have local state that | |
3187 | is not a GC root. */ | |
3188 | if (!function_depth) | |
3189 | ggc_collect (); | |
8cd2462c JH |
3190 | return; |
3191 | } | |
3192 | ||
3193 | /* Replace AGGR_INIT_EXPRs with appropriate CALL_EXPRs. */ | |
14588106 RG |
3194 | cp_walk_tree_without_duplicates (&DECL_SAVED_TREE (fn), |
3195 | simplify_aggr_init_exprs_r, | |
3196 | NULL); | |
8cd2462c JH |
3197 | |
3198 | /* If this is a constructor or destructor body, we have to clone | |
3199 | it. */ | |
3200 | if (maybe_clone_body (fn)) | |
3201 | { | |
3202 | /* We don't want to process FN again, so pretend we've written | |
3203 | it out, even though we haven't. */ | |
3204 | TREE_ASM_WRITTEN (fn) = 1; | |
3205 | return; | |
3206 | } | |
3207 | ||
4684cd27 MM |
3208 | /* We make a decision about linkage for these functions at the end |
3209 | of the compilation. Until that point, we do not want the back | |
3210 | end to output them -- but we do want it to see the bodies of | |
1a10290c | 3211 | these functions so that it can inline them as appropriate. */ |
4684cd27 MM |
3212 | if (DECL_DECLARED_INLINE_P (fn) || DECL_IMPLICIT_INSTANTIATION (fn)) |
3213 | { | |
1ef0df47 MM |
3214 | if (DECL_INTERFACE_KNOWN (fn)) |
3215 | /* We've already made a decision as to how this function will | |
3216 | be handled. */; | |
3217 | else if (!at_eof) | |
4684cd27 MM |
3218 | { |
3219 | DECL_EXTERNAL (fn) = 1; | |
3220 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
3221 | note_vague_linkage_fn (fn); | |
1ef0df47 MM |
3222 | /* A non-template inline function with external linkage will |
3223 | always be COMDAT. As we must eventually determine the | |
3224 | linkage of all functions, and as that causes writes to | |
3225 | the data mapped in from the PCH file, it's advantageous | |
3226 | to mark the functions at this point. */ | |
3227 | if (!DECL_IMPLICIT_INSTANTIATION (fn)) | |
3228 | { | |
3229 | /* This function must have external linkage, as | |
3230 | otherwise DECL_INTERFACE_KNOWN would have been | |
3231 | set. */ | |
3232 | gcc_assert (TREE_PUBLIC (fn)); | |
3233 | comdat_linkage (fn); | |
3234 | DECL_INTERFACE_KNOWN (fn) = 1; | |
3235 | } | |
4684cd27 MM |
3236 | } |
3237 | else | |
3238 | import_export_decl (fn); | |
1a10290c MM |
3239 | |
3240 | /* If the user wants us to keep all inline functions, then mark | |
3241 | this function as needed so that finish_file will make sure to | |
3242 | output it later. */ | |
3243 | if (flag_keep_inline_functions && DECL_DECLARED_INLINE_P (fn)) | |
3244 | mark_needed (fn); | |
4684cd27 MM |
3245 | } |
3246 | ||
8cd2462c JH |
3247 | /* There's no reason to do any of the work here if we're only doing |
3248 | semantic analysis; this code just generates RTL. */ | |
3249 | if (flag_syntax_only) | |
3250 | return; | |
3251 | ||
99edd65d RH |
3252 | function_depth++; |
3253 | ||
e4d91027 | 3254 | /* Expand or defer, at the whim of the compilation unit manager. */ |
6b00c969 | 3255 | cgraph_finalize_function (fn, function_depth > 1); |
99edd65d RH |
3256 | |
3257 | function_depth--; | |
8cd2462c JH |
3258 | } |
3259 | ||
6de9cd9a DN |
3260 | struct nrv_data |
3261 | { | |
3262 | tree var; | |
3263 | tree result; | |
3264 | htab_t visited; | |
3265 | }; | |
0d97bf4c | 3266 | |
6de9cd9a DN |
3267 | /* Helper function for walk_tree, used by finalize_nrv below. */ |
3268 | ||
3269 | static tree | |
3270 | finalize_nrv_r (tree* tp, int* walk_subtrees, void* data) | |
0d97bf4c | 3271 | { |
6de9cd9a DN |
3272 | struct nrv_data *dp = (struct nrv_data *)data; |
3273 | void **slot; | |
07b2f2fd JM |
3274 | |
3275 | /* No need to walk into types. There wouldn't be any need to walk into | |
3276 | non-statements, except that we have to consider STMT_EXPRs. */ | |
0d97bf4c JM |
3277 | if (TYPE_P (*tp)) |
3278 | *walk_subtrees = 0; | |
6de9cd9a DN |
3279 | /* Change all returns to just refer to the RESULT_DECL; this is a nop, |
3280 | but differs from using NULL_TREE in that it indicates that we care | |
3281 | about the value of the RESULT_DECL. */ | |
5088b058 RH |
3282 | else if (TREE_CODE (*tp) == RETURN_EXPR) |
3283 | TREE_OPERAND (*tp, 0) = dp->result; | |
6de9cd9a DN |
3284 | /* Change all cleanups for the NRV to only run when an exception is |
3285 | thrown. */ | |
07b2f2fd | 3286 | else if (TREE_CODE (*tp) == CLEANUP_STMT |
6de9cd9a | 3287 | && CLEANUP_DECL (*tp) == dp->var) |
659e5a7a | 3288 | CLEANUP_EH_ONLY (*tp) = 1; |
350fae66 | 3289 | /* Replace the DECL_EXPR for the NRV with an initialization of the |
6de9cd9a | 3290 | RESULT_DECL, if needed. */ |
350fae66 RK |
3291 | else if (TREE_CODE (*tp) == DECL_EXPR |
3292 | && DECL_EXPR_DECL (*tp) == dp->var) | |
6de9cd9a DN |
3293 | { |
3294 | tree init; | |
3295 | if (DECL_INITIAL (dp->var) | |
3296 | && DECL_INITIAL (dp->var) != error_mark_node) | |
3297 | { | |
f293ce4b RS |
3298 | init = build2 (INIT_EXPR, void_type_node, dp->result, |
3299 | DECL_INITIAL (dp->var)); | |
6de9cd9a DN |
3300 | DECL_INITIAL (dp->var) = error_mark_node; |
3301 | } | |
3302 | else | |
543a0daa | 3303 | init = build_empty_stmt (); |
6de9cd9a | 3304 | SET_EXPR_LOCUS (init, EXPR_LOCUS (*tp)); |
6de9cd9a DN |
3305 | *tp = init; |
3306 | } | |
3307 | /* And replace all uses of the NRV with the RESULT_DECL. */ | |
3308 | else if (*tp == dp->var) | |
3309 | *tp = dp->result; | |
3310 | ||
3311 | /* Avoid walking into the same tree more than once. Unfortunately, we | |
3312 | can't just use walk_tree_without duplicates because it would only call | |
3313 | us for the first occurrence of dp->var in the function body. */ | |
3314 | slot = htab_find_slot (dp->visited, *tp, INSERT); | |
3315 | if (*slot) | |
3316 | *walk_subtrees = 0; | |
3317 | else | |
3318 | *slot = *tp; | |
0d97bf4c JM |
3319 | |
3320 | /* Keep iterating. */ | |
3321 | return NULL_TREE; | |
3322 | } | |
3323 | ||
6de9cd9a | 3324 | /* Called from finish_function to implement the named return value |
5088b058 | 3325 | optimization by overriding all the RETURN_EXPRs and pertinent |
6de9cd9a DN |
3326 | CLEANUP_STMTs and replacing all occurrences of VAR with RESULT, the |
3327 | RESULT_DECL for the function. */ | |
f444e36b | 3328 | |
4985cde3 | 3329 | void |
6de9cd9a | 3330 | finalize_nrv (tree *tp, tree var, tree result) |
f444e36b | 3331 | { |
6de9cd9a DN |
3332 | struct nrv_data data; |
3333 | ||
3334 | /* Copy debugging information from VAR to RESULT. */ | |
3335 | DECL_NAME (result) = DECL_NAME (var); | |
b785f485 RH |
3336 | DECL_ARTIFICIAL (result) = DECL_ARTIFICIAL (var); |
3337 | DECL_IGNORED_P (result) = DECL_IGNORED_P (var); | |
6de9cd9a DN |
3338 | DECL_SOURCE_LOCATION (result) = DECL_SOURCE_LOCATION (var); |
3339 | DECL_ABSTRACT_ORIGIN (result) = DECL_ABSTRACT_ORIGIN (var); | |
3340 | /* Don't forget that we take its address. */ | |
3341 | TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (var); | |
3342 | ||
3343 | data.var = var; | |
3344 | data.result = result; | |
3345 | data.visited = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
14588106 | 3346 | cp_walk_tree (tp, finalize_nrv_r, &data, 0); |
6de9cd9a | 3347 | htab_delete (data.visited); |
b850de4f | 3348 | } |
1799e5d5 RH |
3349 | \f |
3350 | /* For all elements of CLAUSES, validate them vs OpenMP constraints. | |
3351 | Remove any elements from the list that are invalid. */ | |
3352 | ||
3353 | tree | |
3354 | finish_omp_clauses (tree clauses) | |
3355 | { | |
3356 | bitmap_head generic_head, firstprivate_head, lastprivate_head; | |
3357 | tree c, t, *pc = &clauses; | |
3358 | const char *name; | |
3359 | ||
3360 | bitmap_obstack_initialize (NULL); | |
3361 | bitmap_initialize (&generic_head, &bitmap_default_obstack); | |
3362 | bitmap_initialize (&firstprivate_head, &bitmap_default_obstack); | |
3363 | bitmap_initialize (&lastprivate_head, &bitmap_default_obstack); | |
3364 | ||
3365 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3366 | { | |
3367 | bool remove = false; | |
3368 | ||
3369 | switch (OMP_CLAUSE_CODE (c)) | |
3370 | { | |
3371 | case OMP_CLAUSE_SHARED: | |
3372 | name = "shared"; | |
3373 | goto check_dup_generic; | |
3374 | case OMP_CLAUSE_PRIVATE: | |
3375 | name = "private"; | |
3376 | goto check_dup_generic; | |
3377 | case OMP_CLAUSE_REDUCTION: | |
3378 | name = "reduction"; | |
3379 | goto check_dup_generic; | |
3380 | case OMP_CLAUSE_COPYPRIVATE: | |
3381 | name = "copyprivate"; | |
3382 | goto check_dup_generic; | |
3383 | case OMP_CLAUSE_COPYIN: | |
3384 | name = "copyin"; | |
3385 | goto check_dup_generic; | |
3386 | check_dup_generic: | |
3387 | t = OMP_CLAUSE_DECL (c); | |
3388 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3389 | { | |
3390 | if (processing_template_decl) | |
3391 | break; | |
76dc15d4 JJ |
3392 | if (DECL_P (t)) |
3393 | error ("%qD is not a variable in clause %qs", t, name); | |
3394 | else | |
3395 | error ("%qE is not a variable in clause %qs", t, name); | |
1799e5d5 RH |
3396 | remove = true; |
3397 | } | |
3398 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3399 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t)) | |
3400 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3401 | { | |
76dc15d4 | 3402 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3403 | remove = true; |
3404 | } | |
3405 | else | |
3406 | bitmap_set_bit (&generic_head, DECL_UID (t)); | |
3407 | break; | |
3408 | ||
3409 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3410 | t = OMP_CLAUSE_DECL (c); | |
3411 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3412 | { | |
3413 | if (processing_template_decl) | |
3414 | break; | |
85b20612 JJ |
3415 | if (DECL_P (t)) |
3416 | error ("%qD is not a variable in clause %<firstprivate%>", t); | |
3417 | else | |
3418 | error ("%qE is not a variable in clause %<firstprivate%>", t); | |
1799e5d5 RH |
3419 | remove = true; |
3420 | } | |
3421 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3422 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3423 | { | |
85b20612 | 3424 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3425 | remove = true; |
3426 | } | |
3427 | else | |
3428 | bitmap_set_bit (&firstprivate_head, DECL_UID (t)); | |
3429 | break; | |
3430 | ||
3431 | case OMP_CLAUSE_LASTPRIVATE: | |
3432 | t = OMP_CLAUSE_DECL (c); | |
3433 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3434 | { | |
3435 | if (processing_template_decl) | |
3436 | break; | |
85b20612 JJ |
3437 | if (DECL_P (t)) |
3438 | error ("%qD is not a variable in clause %<lastprivate%>", t); | |
3439 | else | |
3440 | error ("%qE is not a variable in clause %<lastprivate%>", t); | |
1799e5d5 RH |
3441 | remove = true; |
3442 | } | |
3443 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3444 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3445 | { | |
85b20612 | 3446 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3447 | remove = true; |
3448 | } | |
3449 | else | |
3450 | bitmap_set_bit (&lastprivate_head, DECL_UID (t)); | |
3451 | break; | |
3452 | ||
3453 | case OMP_CLAUSE_IF: | |
3454 | t = OMP_CLAUSE_IF_EXPR (c); | |
3455 | t = maybe_convert_cond (t); | |
3456 | if (t == error_mark_node) | |
3457 | remove = true; | |
3458 | OMP_CLAUSE_IF_EXPR (c) = t; | |
3459 | break; | |
3460 | ||
3461 | case OMP_CLAUSE_NUM_THREADS: | |
3462 | t = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
3463 | if (t == error_mark_node) | |
3464 | remove = true; | |
6e684eee JJ |
3465 | else if (!type_dependent_expression_p (t) |
3466 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3467 | { |
3468 | error ("num_threads expression must be integral"); | |
3469 | remove = true; | |
3470 | } | |
3471 | break; | |
3472 | ||
3473 | case OMP_CLAUSE_SCHEDULE: | |
3474 | t = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c); | |
3475 | if (t == NULL) | |
3476 | ; | |
3477 | else if (t == error_mark_node) | |
3478 | remove = true; | |
6e684eee JJ |
3479 | else if (!type_dependent_expression_p (t) |
3480 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3481 | { |
3482 | error ("schedule chunk size expression must be integral"); | |
3483 | remove = true; | |
3484 | } | |
3485 | break; | |
3486 | ||
3487 | case OMP_CLAUSE_NOWAIT: | |
3488 | case OMP_CLAUSE_ORDERED: | |
3489 | case OMP_CLAUSE_DEFAULT: | |
3490 | break; | |
3491 | ||
3492 | default: | |
3493 | gcc_unreachable (); | |
3494 | } | |
3495 | ||
3496 | if (remove) | |
3497 | *pc = OMP_CLAUSE_CHAIN (c); | |
3498 | else | |
3499 | pc = &OMP_CLAUSE_CHAIN (c); | |
3500 | } | |
3501 | ||
3502 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3503 | { | |
3504 | enum tree_code c_kind = OMP_CLAUSE_CODE (c); | |
3505 | bool remove = false; | |
3506 | bool need_complete_non_reference = false; | |
3507 | bool need_default_ctor = false; | |
3508 | bool need_copy_ctor = false; | |
3509 | bool need_copy_assignment = false; | |
3510 | bool need_implicitly_determined = false; | |
3511 | tree type, inner_type; | |
3512 | ||
3513 | switch (c_kind) | |
3514 | { | |
3515 | case OMP_CLAUSE_SHARED: | |
3516 | name = "shared"; | |
3517 | need_implicitly_determined = true; | |
3518 | break; | |
3519 | case OMP_CLAUSE_PRIVATE: | |
3520 | name = "private"; | |
3521 | need_complete_non_reference = true; | |
3522 | need_default_ctor = true; | |
3523 | need_implicitly_determined = true; | |
3524 | break; | |
3525 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3526 | name = "firstprivate"; | |
3527 | need_complete_non_reference = true; | |
3528 | need_copy_ctor = true; | |
3529 | need_implicitly_determined = true; | |
3530 | break; | |
3531 | case OMP_CLAUSE_LASTPRIVATE: | |
3532 | name = "lastprivate"; | |
3533 | need_complete_non_reference = true; | |
3534 | need_copy_assignment = true; | |
3535 | need_implicitly_determined = true; | |
3536 | break; | |
3537 | case OMP_CLAUSE_REDUCTION: | |
3538 | name = "reduction"; | |
3539 | need_implicitly_determined = true; | |
3540 | break; | |
3541 | case OMP_CLAUSE_COPYPRIVATE: | |
3542 | name = "copyprivate"; | |
3543 | need_copy_assignment = true; | |
3544 | break; | |
3545 | case OMP_CLAUSE_COPYIN: | |
3546 | name = "copyin"; | |
3547 | need_copy_assignment = true; | |
3548 | break; | |
3549 | default: | |
3550 | pc = &OMP_CLAUSE_CHAIN (c); | |
3551 | continue; | |
3552 | } | |
3553 | ||
3554 | t = OMP_CLAUSE_DECL (c); | |
3555 | if (processing_template_decl | |
3556 | && TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3557 | { | |
3558 | pc = &OMP_CLAUSE_CHAIN (c); | |
3559 | continue; | |
3560 | } | |
3561 | ||
3562 | switch (c_kind) | |
3563 | { | |
3564 | case OMP_CLAUSE_LASTPRIVATE: | |
3565 | if (!bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3566 | need_default_ctor = true; | |
3567 | break; | |
3568 | ||
3569 | case OMP_CLAUSE_REDUCTION: | |
3570 | if (AGGREGATE_TYPE_P (TREE_TYPE (t)) | |
3571 | || POINTER_TYPE_P (TREE_TYPE (t))) | |
3572 | { | |
3573 | error ("%qE has invalid type for %<reduction%>", t); | |
3574 | remove = true; | |
3575 | } | |
3576 | else if (FLOAT_TYPE_P (TREE_TYPE (t))) | |
3577 | { | |
3578 | enum tree_code r_code = OMP_CLAUSE_REDUCTION_CODE (c); | |
3579 | switch (r_code) | |
3580 | { | |
3581 | case PLUS_EXPR: | |
3582 | case MULT_EXPR: | |
3583 | case MINUS_EXPR: | |
3584 | break; | |
3585 | default: | |
3586 | error ("%qE has invalid type for %<reduction(%s)%>", | |
3587 | t, operator_name_info[r_code].name); | |
3588 | remove = true; | |
3589 | } | |
3590 | } | |
3591 | break; | |
3592 | ||
3593 | case OMP_CLAUSE_COPYIN: | |
3594 | if (TREE_CODE (t) != VAR_DECL || !DECL_THREAD_LOCAL_P (t)) | |
3595 | { | |
3596 | error ("%qE must be %<threadprivate%> for %<copyin%>", t); | |
3597 | remove = true; | |
3598 | } | |
3599 | break; | |
3600 | ||
3601 | default: | |
3602 | break; | |
3603 | } | |
3604 | ||
3605 | if (need_complete_non_reference) | |
3606 | { | |
3607 | t = require_complete_type (t); | |
3608 | if (t == error_mark_node) | |
3609 | remove = true; | |
3610 | else if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE) | |
3611 | { | |
3612 | error ("%qE has reference type for %qs", t, name); | |
3613 | remove = true; | |
3614 | } | |
3615 | } | |
3616 | if (need_implicitly_determined) | |
3617 | { | |
3618 | const char *share_name = NULL; | |
3619 | ||
3620 | if (TREE_CODE (t) == VAR_DECL && DECL_THREAD_LOCAL_P (t)) | |
3621 | share_name = "threadprivate"; | |
3622 | else switch (cxx_omp_predetermined_sharing (t)) | |
3623 | { | |
3624 | case OMP_CLAUSE_DEFAULT_UNSPECIFIED: | |
3625 | break; | |
3626 | case OMP_CLAUSE_DEFAULT_SHARED: | |
3627 | share_name = "shared"; | |
3628 | break; | |
3629 | case OMP_CLAUSE_DEFAULT_PRIVATE: | |
3630 | share_name = "private"; | |
3631 | break; | |
3632 | default: | |
3633 | gcc_unreachable (); | |
3634 | } | |
3635 | if (share_name) | |
3636 | { | |
3637 | error ("%qE is predetermined %qs for %qs", | |
3638 | t, share_name, name); | |
3639 | remove = true; | |
3640 | } | |
3641 | } | |
3642 | ||
3643 | /* We're interested in the base element, not arrays. */ | |
3644 | inner_type = type = TREE_TYPE (t); | |
3645 | while (TREE_CODE (inner_type) == ARRAY_TYPE) | |
3646 | inner_type = TREE_TYPE (inner_type); | |
3647 | ||
84dc00e8 | 3648 | /* Check for special function availability by building a call to one. |
1799e5d5 RH |
3649 | Save the results, because later we won't be in the right context |
3650 | for making these queries. */ | |
3651 | if (CLASS_TYPE_P (inner_type) | |
6f719560 JJ |
3652 | && (need_default_ctor || need_copy_ctor || need_copy_assignment) |
3653 | && !type_dependent_expression_p (t)) | |
1799e5d5 RH |
3654 | { |
3655 | int save_errorcount = errorcount; | |
3656 | tree info; | |
3657 | ||
3658 | /* Always allocate 3 elements for simplicity. These are the | |
3659 | function decls for the ctor, dtor, and assignment op. | |
3660 | This layout is known to the three lang hooks, | |
3661 | cxx_omp_clause_default_init, cxx_omp_clause_copy_init, | |
3662 | and cxx_omp_clause_assign_op. */ | |
3663 | info = make_tree_vec (3); | |
3664 | CP_OMP_CLAUSE_INFO (c) = info; | |
3665 | ||
3666 | if (need_default_ctor | |
3667 | || (need_copy_ctor | |
3668 | && !TYPE_HAS_TRIVIAL_INIT_REF (inner_type))) | |
3669 | { | |
3670 | if (need_default_ctor) | |
3671 | t = NULL; | |
3672 | else | |
3673 | { | |
3674 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3675 | t = build1 (INDIRECT_REF, inner_type, t); | |
3676 | t = build_tree_list (NULL, t); | |
3677 | } | |
3678 | t = build_special_member_call (NULL_TREE, | |
3679 | complete_ctor_identifier, | |
5ade1ed2 DG |
3680 | t, inner_type, LOOKUP_NORMAL, |
3681 | tf_warning_or_error); | |
67f9922b | 3682 | |
fde155a7 | 3683 | if (targetm.cxx.cdtor_returns_this () || errorcount) |
67f9922b MM |
3684 | /* Because constructors and destructors return this, |
3685 | the call will have been cast to "void". Remove the | |
3686 | cast here. We would like to use STRIP_NOPS, but it | |
3687 | wouldn't work here because TYPE_MODE (t) and | |
3688 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3689 | They are VOIDmode and Pmode, respectively. */ | |
3690 | if (TREE_CODE (t) == NOP_EXPR) | |
3691 | t = TREE_OPERAND (t, 0); | |
3692 | ||
1799e5d5 RH |
3693 | t = get_callee_fndecl (t); |
3694 | TREE_VEC_ELT (info, 0) = t; | |
3695 | } | |
3696 | ||
3697 | if ((need_default_ctor || need_copy_ctor) | |
3698 | && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (inner_type)) | |
3699 | { | |
3700 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3701 | t = build1 (INDIRECT_REF, inner_type, t); | |
3702 | t = build_special_member_call (t, complete_dtor_identifier, | |
5ade1ed2 DG |
3703 | NULL, inner_type, LOOKUP_NORMAL, |
3704 | tf_warning_or_error); | |
67f9922b | 3705 | |
fde155a7 | 3706 | if (targetm.cxx.cdtor_returns_this () || errorcount) |
67f9922b MM |
3707 | /* Because constructors and destructors return this, |
3708 | the call will have been cast to "void". Remove the | |
3709 | cast here. We would like to use STRIP_NOPS, but it | |
3710 | wouldn't work here because TYPE_MODE (t) and | |
3711 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3712 | They are VOIDmode and Pmode, respectively. */ | |
3713 | if (TREE_CODE (t) == NOP_EXPR) | |
3714 | t = TREE_OPERAND (t, 0); | |
3715 | ||
1799e5d5 RH |
3716 | t = get_callee_fndecl (t); |
3717 | TREE_VEC_ELT (info, 1) = t; | |
3718 | } | |
3719 | ||
3720 | if (need_copy_assignment | |
3721 | && !TYPE_HAS_TRIVIAL_ASSIGN_REF (inner_type)) | |
3722 | { | |
3723 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3724 | t = build1 (INDIRECT_REF, inner_type, t); | |
3725 | t = build_special_member_call (t, ansi_assopname (NOP_EXPR), | |
3726 | build_tree_list (NULL, t), | |
5ade1ed2 DG |
3727 | inner_type, LOOKUP_NORMAL, |
3728 | tf_warning_or_error); | |
1799e5d5 RH |
3729 | |
3730 | /* We'll have called convert_from_reference on the call, which | |
3db45ab5 | 3731 | may well have added an indirect_ref. It's unneeded here, |
1799e5d5 RH |
3732 | and in the way, so kill it. */ |
3733 | if (TREE_CODE (t) == INDIRECT_REF) | |
3734 | t = TREE_OPERAND (t, 0); | |
3735 | ||
3736 | t = get_callee_fndecl (t); | |
3737 | TREE_VEC_ELT (info, 2) = t; | |
3738 | } | |
3739 | ||
3740 | if (errorcount != save_errorcount) | |
3741 | remove = true; | |
3742 | } | |
3743 | ||
3744 | if (remove) | |
3745 | *pc = OMP_CLAUSE_CHAIN (c); | |
3746 | else | |
3747 | pc = &OMP_CLAUSE_CHAIN (c); | |
3748 | } | |
3749 | ||
3750 | bitmap_obstack_release (NULL); | |
3751 | return clauses; | |
3752 | } | |
3753 | ||
3754 | /* For all variables in the tree_list VARS, mark them as thread local. */ | |
3755 | ||
3756 | void | |
3757 | finish_omp_threadprivate (tree vars) | |
3758 | { | |
3759 | tree t; | |
3760 | ||
3761 | /* Mark every variable in VARS to be assigned thread local storage. */ | |
3762 | for (t = vars; t; t = TREE_CHAIN (t)) | |
3763 | { | |
3764 | tree v = TREE_PURPOSE (t); | |
3765 | ||
edb6000e JJ |
3766 | if (error_operand_p (v)) |
3767 | ; | |
3768 | else if (TREE_CODE (v) != VAR_DECL) | |
3769 | error ("%<threadprivate%> %qD is not file, namespace " | |
3770 | "or block scope variable", v); | |
1799e5d5 RH |
3771 | /* If V had already been marked threadprivate, it doesn't matter |
3772 | whether it had been used prior to this point. */ | |
edb6000e | 3773 | else if (TREE_USED (v) |
1799e5d5 RH |
3774 | && (DECL_LANG_SPECIFIC (v) == NULL |
3775 | || !CP_DECL_THREADPRIVATE_P (v))) | |
3776 | error ("%qE declared %<threadprivate%> after first use", v); | |
3777 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) | |
3778 | error ("automatic variable %qE cannot be %<threadprivate%>", v); | |
3779 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) | |
3780 | error ("%<threadprivate%> %qE has incomplete type", v); | |
3781 | else if (TREE_STATIC (v) && TYPE_P (CP_DECL_CONTEXT (v))) | |
3782 | error ("%<threadprivate%> %qE is not file, namespace " | |
3783 | "or block scope variable", v); | |
3784 | else | |
3785 | { | |
3786 | /* Allocate a LANG_SPECIFIC structure for V, if needed. */ | |
3787 | if (DECL_LANG_SPECIFIC (v) == NULL) | |
3788 | { | |
3789 | retrofit_lang_decl (v); | |
3790 | ||
3791 | /* Make sure that DECL_DISCRIMINATOR_P continues to be true | |
3792 | after the allocation of the lang_decl structure. */ | |
3793 | if (DECL_DISCRIMINATOR_P (v)) | |
3794 | DECL_LANG_SPECIFIC (v)->decl_flags.u2sel = 1; | |
3795 | } | |
3796 | ||
3797 | if (! DECL_THREAD_LOCAL_P (v)) | |
3798 | { | |
3799 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
3800 | /* If rtl has been already set for this var, call | |
3801 | make_decl_rtl once again, so that encode_section_info | |
3802 | has a chance to look at the new decl flags. */ | |
3803 | if (DECL_RTL_SET_P (v)) | |
3804 | make_decl_rtl (v); | |
3805 | } | |
3806 | CP_DECL_THREADPRIVATE_P (v) = 1; | |
3807 | } | |
3808 | } | |
3809 | } | |
3810 | ||
3811 | /* Build an OpenMP structured block. */ | |
3812 | ||
3813 | tree | |
3814 | begin_omp_structured_block (void) | |
3815 | { | |
3816 | return do_pushlevel (sk_omp); | |
3817 | } | |
3818 | ||
3819 | tree | |
3820 | finish_omp_structured_block (tree block) | |
3821 | { | |
3822 | return do_poplevel (block); | |
3823 | } | |
3824 | ||
84dc00e8 | 3825 | /* Similarly, except force the retention of the BLOCK. */ |
1799e5d5 RH |
3826 | |
3827 | tree | |
3828 | begin_omp_parallel (void) | |
3829 | { | |
3830 | keep_next_level (true); | |
3831 | return begin_omp_structured_block (); | |
3832 | } | |
3833 | ||
3834 | tree | |
3835 | finish_omp_parallel (tree clauses, tree body) | |
3836 | { | |
3837 | tree stmt; | |
3838 | ||
3839 | body = finish_omp_structured_block (body); | |
b850de4f | 3840 | |
1799e5d5 RH |
3841 | stmt = make_node (OMP_PARALLEL); |
3842 | TREE_TYPE (stmt) = void_type_node; | |
3843 | OMP_PARALLEL_CLAUSES (stmt) = clauses; | |
3844 | OMP_PARALLEL_BODY (stmt) = body; | |
54f7877c | 3845 | |
1799e5d5 RH |
3846 | return add_stmt (stmt); |
3847 | } | |
3848 | ||
3849 | /* Build and validate an OMP_FOR statement. CLAUSES, BODY, COND, INCR | |
3850 | are directly for their associated operands in the statement. DECL | |
3851 | and INIT are a combo; if DECL is NULL then INIT ought to be a | |
3852 | MODIFY_EXPR, and the DECL should be extracted. PRE_BODY are | |
3853 | optional statements that need to go before the loop into its | |
3854 | sk_omp scope. */ | |
3855 | ||
3856 | tree | |
3857 | finish_omp_for (location_t locus, tree decl, tree init, tree cond, | |
3858 | tree incr, tree body, tree pre_body) | |
3859 | { | |
61c3a446 | 3860 | tree omp_for = NULL; |
969c111d | 3861 | |
1799e5d5 RH |
3862 | if (decl == NULL) |
3863 | { | |
3864 | if (init != NULL) | |
3865 | switch (TREE_CODE (init)) | |
3866 | { | |
3867 | case MODIFY_EXPR: | |
3868 | decl = TREE_OPERAND (init, 0); | |
3869 | init = TREE_OPERAND (init, 1); | |
3870 | break; | |
3871 | case MODOP_EXPR: | |
3872 | if (TREE_CODE (TREE_OPERAND (init, 1)) == NOP_EXPR) | |
3873 | { | |
3874 | decl = TREE_OPERAND (init, 0); | |
3875 | init = TREE_OPERAND (init, 2); | |
3876 | } | |
3877 | break; | |
3878 | default: | |
3879 | break; | |
3880 | } | |
3881 | ||
3882 | if (decl == NULL) | |
3883 | { | |
3884 | error ("expected iteration declaration or initialization"); | |
3885 | return NULL; | |
3886 | } | |
3887 | } | |
3888 | ||
3889 | if (type_dependent_expression_p (decl) | |
3890 | || type_dependent_expression_p (init) | |
3891 | || (cond && type_dependent_expression_p (cond)) | |
3892 | || (incr && type_dependent_expression_p (incr))) | |
3893 | { | |
3894 | tree stmt; | |
3895 | ||
3896 | if (cond == NULL) | |
3897 | { | |
3898 | error ("%Hmissing controlling predicate", &locus); | |
3899 | return NULL; | |
3900 | } | |
3901 | ||
3902 | if (incr == NULL) | |
3903 | { | |
3904 | error ("%Hmissing increment expression", &locus); | |
3905 | return NULL; | |
3906 | } | |
3907 | ||
3908 | stmt = make_node (OMP_FOR); | |
3909 | ||
3910 | /* This is really just a place-holder. We'll be decomposing this | |
3911 | again and going through the build_modify_expr path below when | |
3912 | we instantiate the thing. */ | |
3913 | init = build2 (MODIFY_EXPR, void_type_node, decl, init); | |
3914 | ||
3915 | TREE_TYPE (stmt) = void_type_node; | |
3916 | OMP_FOR_INIT (stmt) = init; | |
3917 | OMP_FOR_COND (stmt) = cond; | |
3918 | OMP_FOR_INCR (stmt) = incr; | |
3919 | OMP_FOR_BODY (stmt) = body; | |
3920 | OMP_FOR_PRE_BODY (stmt) = pre_body; | |
3921 | ||
3922 | SET_EXPR_LOCATION (stmt, locus); | |
3923 | return add_stmt (stmt); | |
3924 | } | |
3925 | ||
3926 | if (!DECL_P (decl)) | |
3927 | { | |
3928 | error ("expected iteration declaration or initialization"); | |
3929 | return NULL; | |
3930 | } | |
3931 | ||
dadb19e0 JJ |
3932 | if (!INTEGRAL_TYPE_P (TREE_TYPE (decl))) |
3933 | { | |
3934 | location_t elocus = locus; | |
3935 | ||
3936 | if (EXPR_HAS_LOCATION (init)) | |
3937 | elocus = EXPR_LOCATION (init); | |
3938 | error ("%Hinvalid type for iteration variable %qE", &elocus, decl); | |
3939 | return NULL; | |
3940 | } | |
3941 | ||
1799e5d5 RH |
3942 | if (pre_body == NULL || IS_EMPTY_STMT (pre_body)) |
3943 | pre_body = NULL; | |
3944 | else if (! processing_template_decl) | |
3945 | { | |
3946 | add_stmt (pre_body); | |
3947 | pre_body = NULL; | |
3948 | } | |
969c111d | 3949 | |
b2ebd268 JJ |
3950 | if (!processing_template_decl) |
3951 | init = fold_build_cleanup_point_expr (TREE_TYPE (init), init); | |
5ade1ed2 | 3952 | init = cp_build_modify_expr (decl, NOP_EXPR, init, tf_warning_or_error); |
969c111d JJ |
3953 | if (cond && TREE_SIDE_EFFECTS (cond) && COMPARISON_CLASS_P (cond)) |
3954 | { | |
3955 | int n = TREE_SIDE_EFFECTS (TREE_OPERAND (cond, 1)) != 0; | |
3956 | tree t = TREE_OPERAND (cond, n); | |
3957 | ||
b2ebd268 JJ |
3958 | if (!processing_template_decl) |
3959 | TREE_OPERAND (cond, n) | |
3960 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
969c111d | 3961 | } |
61c3a446 JJ |
3962 | if (decl != error_mark_node && init != error_mark_node) |
3963 | omp_for = c_finish_omp_for (locus, decl, init, cond, incr, body, pre_body); | |
969c111d JJ |
3964 | if (omp_for != NULL |
3965 | && TREE_CODE (OMP_FOR_INCR (omp_for)) == MODIFY_EXPR | |
3966 | && TREE_SIDE_EFFECTS (TREE_OPERAND (OMP_FOR_INCR (omp_for), 1)) | |
3967 | && BINARY_CLASS_P (TREE_OPERAND (OMP_FOR_INCR (omp_for), 1))) | |
3968 | { | |
3969 | tree t = TREE_OPERAND (OMP_FOR_INCR (omp_for), 1); | |
3970 | int n = TREE_SIDE_EFFECTS (TREE_OPERAND (t, 1)) != 0; | |
3971 | ||
b2ebd268 JJ |
3972 | if (!processing_template_decl) |
3973 | TREE_OPERAND (t, n) | |
3974 | = fold_build_cleanup_point_expr (TREE_TYPE (TREE_OPERAND (t, n)), | |
3975 | TREE_OPERAND (t, n)); | |
969c111d JJ |
3976 | } |
3977 | return omp_for; | |
1799e5d5 RH |
3978 | } |
3979 | ||
3980 | void | |
3981 | finish_omp_atomic (enum tree_code code, tree lhs, tree rhs) | |
3982 | { | |
239371f9 JJ |
3983 | tree orig_lhs; |
3984 | tree orig_rhs; | |
3985 | bool dependent_p; | |
e6bd5565 MM |
3986 | tree stmt; |
3987 | ||
239371f9 JJ |
3988 | orig_lhs = lhs; |
3989 | orig_rhs = rhs; | |
3990 | dependent_p = false; | |
3991 | stmt = NULL_TREE; | |
3992 | ||
3993 | /* Even in a template, we can detect invalid uses of the atomic | |
3994 | pragma if neither LHS nor RHS is type-dependent. */ | |
3995 | if (processing_template_decl) | |
e6bd5565 | 3996 | { |
239371f9 JJ |
3997 | dependent_p = (type_dependent_expression_p (lhs) |
3998 | || type_dependent_expression_p (rhs)); | |
3999 | if (!dependent_p) | |
e6bd5565 MM |
4000 | { |
4001 | lhs = build_non_dependent_expr (lhs); | |
4002 | rhs = build_non_dependent_expr (rhs); | |
4003 | } | |
239371f9 JJ |
4004 | } |
4005 | if (!dependent_p) | |
4006 | { | |
e6bd5565 | 4007 | stmt = c_finish_omp_atomic (code, lhs, rhs); |
239371f9 JJ |
4008 | if (stmt == error_mark_node) |
4009 | return; | |
e6bd5565 | 4010 | } |
239371f9 JJ |
4011 | if (processing_template_decl) |
4012 | stmt = build2 (OMP_ATOMIC, void_type_node, integer_zero_node, | |
4013 | build2 (code, void_type_node, orig_lhs, orig_rhs)); | |
4014 | add_stmt (stmt); | |
1799e5d5 RH |
4015 | } |
4016 | ||
4017 | void | |
4018 | finish_omp_barrier (void) | |
4019 | { | |
4020 | tree fn = built_in_decls[BUILT_IN_GOMP_BARRIER]; | |
5ade1ed2 | 4021 | tree stmt = finish_call_expr (fn, NULL, false, false, tf_warning_or_error); |
1799e5d5 RH |
4022 | finish_expr_stmt (stmt); |
4023 | } | |
4024 | ||
4025 | void | |
4026 | finish_omp_flush (void) | |
4027 | { | |
4028 | tree fn = built_in_decls[BUILT_IN_SYNCHRONIZE]; | |
5ade1ed2 | 4029 | tree stmt = finish_call_expr (fn, NULL, false, false, tf_warning_or_error); |
1799e5d5 RH |
4030 | finish_expr_stmt (stmt); |
4031 | } | |
4032 | ||
4033 | /* True if OpenMP sharing attribute of DECL is predetermined. */ | |
4034 | ||
4035 | enum omp_clause_default_kind | |
4036 | cxx_omp_predetermined_sharing (tree decl) | |
4037 | { | |
4038 | enum omp_clause_default_kind kind; | |
4039 | ||
4040 | kind = c_omp_predetermined_sharing (decl); | |
4041 | if (kind != OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
4042 | return kind; | |
4043 | ||
4044 | /* Static data members are predetermined as shared. */ | |
4045 | if (TREE_STATIC (decl)) | |
4046 | { | |
4047 | tree ctx = CP_DECL_CONTEXT (decl); | |
9e1e64ec | 4048 | if (TYPE_P (ctx) && MAYBE_CLASS_TYPE_P (ctx)) |
1799e5d5 RH |
4049 | return OMP_CLAUSE_DEFAULT_SHARED; |
4050 | } | |
4051 | ||
4052 | return OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
4053 | } | |
4054 | \f | |
54f7877c | 4055 | void |
3a978d72 | 4056 | init_cp_semantics (void) |
54f7877c | 4057 | { |
54f7877c | 4058 | } |
55a3debe DG |
4059 | \f |
4060 | /* Build a STATIC_ASSERT for a static assertion with the condition | |
4061 | CONDITION and the message text MESSAGE. LOCATION is the location | |
4062 | of the static assertion in the source code. When MEMBER_P, this | |
4063 | static assertion is a member of a class. */ | |
4064 | void | |
4065 | finish_static_assert (tree condition, tree message, location_t location, | |
4066 | bool member_p) | |
4067 | { | |
7b3e2d46 DG |
4068 | if (check_for_bare_parameter_packs (condition)) |
4069 | condition = error_mark_node; | |
4070 | ||
55a3debe DG |
4071 | if (type_dependent_expression_p (condition) |
4072 | || value_dependent_expression_p (condition)) | |
4073 | { | |
4074 | /* We're in a template; build a STATIC_ASSERT and put it in | |
4075 | the right place. */ | |
4076 | tree assertion; | |
4077 | ||
4078 | assertion = make_node (STATIC_ASSERT); | |
4079 | STATIC_ASSERT_CONDITION (assertion) = condition; | |
4080 | STATIC_ASSERT_MESSAGE (assertion) = message; | |
4081 | STATIC_ASSERT_SOURCE_LOCATION (assertion) = location; | |
4082 | ||
4083 | if (member_p) | |
4084 | maybe_add_class_template_decl_list (current_class_type, | |
4085 | assertion, | |
4086 | /*friend_p=*/0); | |
4087 | else | |
4088 | add_stmt (assertion); | |
4089 | ||
4090 | return; | |
4091 | } | |
4092 | ||
4093 | /* Fold the expression and convert it to a boolean value. */ | |
4094 | condition = fold_non_dependent_expr (condition); | |
4095 | condition = cp_convert (boolean_type_node, condition); | |
4096 | ||
4097 | if (TREE_CODE (condition) == INTEGER_CST && !integer_zerop (condition)) | |
4098 | /* Do nothing; the condition is satisfied. */ | |
4099 | ; | |
4100 | else | |
4101 | { | |
4102 | location_t saved_loc = input_location; | |
4103 | ||
4104 | input_location = location; | |
4105 | if (TREE_CODE (condition) == INTEGER_CST | |
4106 | && integer_zerop (condition)) | |
4107 | /* Report the error. */ | |
4108 | error ("static assertion failed: %E", message); | |
4109 | else if (condition && condition != error_mark_node) | |
4110 | error ("non-constant condition for static assertion"); | |
4111 | input_location = saved_loc; | |
4112 | } | |
4113 | } | |
3ad6a8e1 DG |
4114 | \f |
4115 | /* Implements the C++0x decltype keyword. Returns the type of EXPR, | |
4116 | suitable for use as a type-specifier. | |
4117 | ||
4118 | ID_EXPRESSION_OR_MEMBER_ACCESS_P is true when EXPR was parsed as an | |
4119 | id-expression or a class member access, FALSE when it was parsed as | |
4120 | a full expression. */ | |
4121 | tree | |
4122 | finish_decltype_type (tree expr, bool id_expression_or_member_access_p) | |
4123 | { | |
4124 | tree orig_expr = expr; | |
4125 | tree type; | |
4126 | ||
e4fd5b87 DG |
4127 | if (!expr || error_operand_p (expr)) |
4128 | return error_mark_node; | |
4129 | ||
7a547b93 JJ |
4130 | if (TYPE_P (expr) |
4131 | || TREE_CODE (expr) == TYPE_DECL | |
4132 | || (TREE_CODE (expr) == BIT_NOT_EXPR | |
4133 | && TYPE_P (TREE_OPERAND (expr, 0)))) | |
4134 | { | |
4135 | error ("argument to decltype must be an expression"); | |
4136 | return error_mark_node; | |
4137 | } | |
4138 | ||
3ad6a8e1 DG |
4139 | if (type_dependent_expression_p (expr)) |
4140 | { | |
9e1e64ec | 4141 | type = cxx_make_type (DECLTYPE_TYPE); |
3ad6a8e1 DG |
4142 | DECLTYPE_TYPE_EXPR (type) = expr; |
4143 | DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type) | |
4144 | = id_expression_or_member_access_p; | |
4145 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
4146 | ||
4147 | return type; | |
4148 | } | |
4149 | ||
4150 | /* The type denoted by decltype(e) is defined as follows: */ | |
4151 | ||
4152 | if (id_expression_or_member_access_p) | |
4153 | { | |
4154 | /* If e is an id-expression or a class member access (5.2.5 | |
4155 | [expr.ref]), decltype(e) is defined as the type of the entity | |
4156 | named by e. If there is no such entity, or e names a set of | |
4157 | overloaded functions, the program is ill-formed. */ | |
4158 | if (TREE_CODE (expr) == IDENTIFIER_NODE) | |
4159 | expr = lookup_name (expr); | |
4160 | ||
4161 | if (TREE_CODE (expr) == INDIRECT_REF) | |
4162 | /* This can happen when the expression is, e.g., "a.b". Just | |
4163 | look at the underlying operand. */ | |
4164 | expr = TREE_OPERAND (expr, 0); | |
4165 | ||
4166 | if (TREE_CODE (expr) == OFFSET_REF | |
4167 | || TREE_CODE (expr) == MEMBER_REF) | |
4168 | /* We're only interested in the field itself. If it is a | |
4169 | BASELINK, we will need to see through it in the next | |
4170 | step. */ | |
4171 | expr = TREE_OPERAND (expr, 1); | |
4172 | ||
4173 | if (TREE_CODE (expr) == BASELINK) | |
4174 | /* See through BASELINK nodes to the underlying functions. */ | |
4175 | expr = BASELINK_FUNCTIONS (expr); | |
4176 | ||
4177 | if (TREE_CODE (expr) == OVERLOAD) | |
4178 | { | |
4179 | if (OVL_CHAIN (expr)) | |
4180 | { | |
4181 | error ("%qE refers to a set of overloaded functions", orig_expr); | |
4182 | return error_mark_node; | |
4183 | } | |
4184 | else | |
4185 | /* An overload set containing only one function: just look | |
4186 | at that function. */ | |
4187 | expr = OVL_FUNCTION (expr); | |
4188 | } | |
4189 | ||
4190 | switch (TREE_CODE (expr)) | |
4191 | { | |
4192 | case FIELD_DECL: | |
4193 | if (DECL_C_BIT_FIELD (expr)) | |
4194 | { | |
4195 | type = DECL_BIT_FIELD_TYPE (expr); | |
4196 | break; | |
4197 | } | |
4198 | /* Fall through for fields that aren't bitfields. */ | |
4199 | ||
4200 | case FUNCTION_DECL: | |
4201 | case VAR_DECL: | |
4202 | case CONST_DECL: | |
4203 | case PARM_DECL: | |
4204 | case RESULT_DECL: | |
4205 | type = TREE_TYPE (expr); | |
4206 | break; | |
4207 | ||
4208 | case ERROR_MARK: | |
4209 | type = error_mark_node; | |
4210 | break; | |
4211 | ||
4212 | case COMPONENT_REF: | |
4213 | type = is_bitfield_expr_with_lowered_type (expr); | |
4214 | if (!type) | |
4215 | type = TREE_TYPE (TREE_OPERAND (expr, 1)); | |
4216 | break; | |
4217 | ||
4218 | case BIT_FIELD_REF: | |
4219 | gcc_unreachable (); | |
4220 | ||
4221 | case INTEGER_CST: | |
4222 | /* We can get here when the id-expression refers to an | |
4223 | enumerator. */ | |
4224 | type = TREE_TYPE (expr); | |
4225 | break; | |
4226 | ||
4227 | default: | |
91929b4d JJ |
4228 | gcc_assert (TYPE_P (expr) || DECL_P (expr) |
4229 | || TREE_CODE (expr) == SCOPE_REF); | |
3ad6a8e1 DG |
4230 | error ("argument to decltype must be an expression"); |
4231 | return error_mark_node; | |
4232 | } | |
4233 | } | |
4234 | else | |
4235 | { | |
4236 | tree fndecl; | |
4237 | ||
e4fd5b87 DG |
4238 | /* Expressions of reference type are sometimes wrapped in |
4239 | INDIRECT_REFs. INDIRECT_REFs are just internal compiler | |
4240 | representation, not part of the language, so we have to look | |
4241 | through them. */ | |
4242 | if (TREE_CODE (expr) == INDIRECT_REF | |
4243 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) | |
4244 | == REFERENCE_TYPE) | |
4245 | expr = TREE_OPERAND (expr, 0); | |
4246 | ||
3ad6a8e1 DG |
4247 | if (TREE_CODE (expr) == CALL_EXPR |
4248 | && (fndecl = get_callee_fndecl (expr)) | |
4249 | && (fndecl != error_mark_node)) | |
4250 | /* If e is a function call (5.2.2 [expr.call]) or an | |
4251 | invocation of an overloaded operator (parentheses around e | |
4252 | are ignored), decltype(e) is defined as the return type of | |
4253 | that function. */ | |
4254 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
4255 | else | |
4256 | { | |
4257 | type = is_bitfield_expr_with_lowered_type (expr); | |
4258 | if (type) | |
4259 | { | |
4260 | /* Bitfields are special, because their type encodes the | |
4261 | number of bits they store. If the expression referenced a | |
4262 | bitfield, TYPE now has the declared type of that | |
4263 | bitfield. */ | |
4264 | type = cp_build_qualified_type (type, | |
4265 | cp_type_quals (TREE_TYPE (expr))); | |
4266 | ||
4267 | if (real_lvalue_p (expr)) | |
4268 | type = build_reference_type (type); | |
4269 | } | |
4270 | else | |
4271 | { | |
4272 | /* Otherwise, where T is the type of e, if e is an lvalue, | |
4273 | decltype(e) is defined as T&, otherwise decltype(e) is | |
4274 | defined as T. */ | |
4275 | type = TREE_TYPE (expr); | |
e4fd5b87 DG |
4276 | if (type == error_mark_node) |
4277 | return error_mark_node; | |
4278 | else if (expr == current_class_ptr) | |
3ad6a8e1 DG |
4279 | /* If the expression is just "this", we want the |
4280 | cv-unqualified pointer for the "this" type. */ | |
4281 | type = TYPE_MAIN_VARIANT (type); | |
4282 | else if (real_lvalue_p (expr)) | |
4283 | { | |
4284 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
4285 | type = build_reference_type (type); | |
4286 | } | |
4287 | else | |
4288 | type = non_reference (type); | |
4289 | } | |
4290 | } | |
4291 | } | |
4292 | ||
4293 | if (!type || type == unknown_type_node) | |
4294 | { | |
4295 | error ("type of %qE is unknown", expr); | |
4296 | return error_mark_node; | |
4297 | } | |
4298 | ||
4299 | return type; | |
4300 | } | |
cf22909c | 4301 | |
b29441ec PC |
4302 | /* Called from trait_expr_value to evaluate either __has_nothrow_assign or |
4303 | __has_nothrow_copy, depending on assign_p. */ | |
cb68ec50 PC |
4304 | |
4305 | static bool | |
b29441ec | 4306 | classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p) |
cb68ec50 | 4307 | { |
b29441ec | 4308 | tree fns; |
cb68ec50 | 4309 | |
b29441ec PC |
4310 | if (assign_p) |
4311 | { | |
4312 | int ix; | |
4313 | ix = lookup_fnfields_1 (type, ansi_assopname (NOP_EXPR)); | |
4314 | if (ix < 0) | |
cb68ec50 | 4315 | return false; |
b29441ec PC |
4316 | fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix); |
4317 | } | |
4318 | else if (TYPE_HAS_INIT_REF (type)) | |
4319 | { | |
4320 | /* If construction of the copy constructor was postponed, create | |
4321 | it now. */ | |
4322 | if (CLASSTYPE_LAZY_COPY_CTOR (type)) | |
4323 | lazily_declare_fn (sfk_copy_constructor, type); | |
4324 | fns = CLASSTYPE_CONSTRUCTORS (type); | |
cb68ec50 PC |
4325 | } |
4326 | else | |
4327 | return false; | |
4328 | ||
b29441ec PC |
4329 | for (; fns; fns = OVL_NEXT (fns)) |
4330 | if (!TREE_NOTHROW (OVL_CURRENT (fns))) | |
4331 | return false; | |
4332 | ||
cb68ec50 PC |
4333 | return true; |
4334 | } | |
4335 | ||
4336 | /* Actually evaluates the trait. */ | |
4337 | ||
4338 | static bool | |
4339 | trait_expr_value (cp_trait_kind kind, tree type1, tree type2) | |
4340 | { | |
4341 | enum tree_code type_code1; | |
4342 | tree t; | |
4343 | ||
4344 | type_code1 = TREE_CODE (type1); | |
4345 | ||
4346 | switch (kind) | |
4347 | { | |
4348 | case CPTK_HAS_NOTHROW_ASSIGN: | |
b29441ec PC |
4349 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
4350 | && (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2) | |
4351 | || (CLASS_TYPE_P (type1) | |
4352 | && classtype_has_nothrow_assign_or_copy_p (type1, | |
4353 | true)))); | |
cb68ec50 PC |
4354 | |
4355 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
4356 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE | |
4357 | && (pod_type_p (type1) | |
4358 | || (CLASS_TYPE_P (type1) | |
4359 | && TYPE_HAS_TRIVIAL_ASSIGN_REF (type1)))); | |
4360 | ||
4361 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
4362 | type1 = strip_array_types (type1); | |
4363 | return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2) | |
4364 | || (CLASS_TYPE_P (type1) | |
4365 | && (t = locate_ctor (type1, NULL)) && TREE_NOTHROW (t))); | |
4366 | ||
4367 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
4368 | type1 = strip_array_types (type1); | |
4369 | return (pod_type_p (type1) | |
4370 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1))); | |
4371 | ||
4372 | case CPTK_HAS_NOTHROW_COPY: | |
4373 | return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2) | |
4374 | || (CLASS_TYPE_P (type1) | |
b29441ec | 4375 | && classtype_has_nothrow_assign_or_copy_p (type1, false))); |
cb68ec50 PC |
4376 | |
4377 | case CPTK_HAS_TRIVIAL_COPY: | |
4378 | return (pod_type_p (type1) || type_code1 == REFERENCE_TYPE | |
4379 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_INIT_REF (type1))); | |
4380 | ||
4381 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
4382 | type1 = strip_array_types (type1); | |
4383 | return (pod_type_p (type1) | |
4384 | || (CLASS_TYPE_P (type1) | |
4385 | && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1))); | |
4386 | ||
4387 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
4388 | return (CLASS_TYPE_P (type1) | |
4389 | && (t = locate_dtor (type1, NULL)) && DECL_VIRTUAL_P (t)); | |
4390 | ||
4391 | case CPTK_IS_ABSTRACT: | |
4392 | return (CLASS_TYPE_P (type1) && CLASSTYPE_PURE_VIRTUALS (type1)); | |
4393 | ||
4394 | case CPTK_IS_BASE_OF: | |
4395 | return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
4396 | && DERIVED_FROM_P (type1, type2)); | |
4397 | ||
4398 | case CPTK_IS_CLASS: | |
4399 | return (NON_UNION_CLASS_TYPE_P (type1)); | |
4400 | ||
4401 | case CPTK_IS_CONVERTIBLE_TO: | |
4402 | /* TODO */ | |
4403 | return false; | |
4404 | ||
4405 | case CPTK_IS_EMPTY: | |
4406 | return (NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1)); | |
4407 | ||
4408 | case CPTK_IS_ENUM: | |
4409 | return (type_code1 == ENUMERAL_TYPE); | |
4410 | ||
4411 | case CPTK_IS_POD: | |
4412 | return (pod_type_p (type1)); | |
4413 | ||
4414 | case CPTK_IS_POLYMORPHIC: | |
4415 | return (CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1)); | |
4416 | ||
4417 | case CPTK_IS_UNION: | |
4418 | return (type_code1 == UNION_TYPE); | |
4419 | ||
4420 | default: | |
4421 | gcc_unreachable (); | |
4422 | return false; | |
4423 | } | |
4424 | } | |
4425 | ||
4426 | /* Process a trait expression. */ | |
4427 | ||
4428 | tree | |
4429 | finish_trait_expr (cp_trait_kind kind, tree type1, tree type2) | |
4430 | { | |
4431 | gcc_assert (kind == CPTK_HAS_NOTHROW_ASSIGN | |
4432 | || kind == CPTK_HAS_NOTHROW_CONSTRUCTOR | |
4433 | || kind == CPTK_HAS_NOTHROW_COPY | |
4434 | || kind == CPTK_HAS_TRIVIAL_ASSIGN | |
4435 | || kind == CPTK_HAS_TRIVIAL_CONSTRUCTOR | |
4436 | || kind == CPTK_HAS_TRIVIAL_COPY | |
4437 | || kind == CPTK_HAS_TRIVIAL_DESTRUCTOR | |
4438 | || kind == CPTK_HAS_VIRTUAL_DESTRUCTOR | |
4439 | || kind == CPTK_IS_ABSTRACT | |
4440 | || kind == CPTK_IS_BASE_OF | |
4441 | || kind == CPTK_IS_CLASS | |
4442 | || kind == CPTK_IS_CONVERTIBLE_TO | |
4443 | || kind == CPTK_IS_EMPTY | |
4444 | || kind == CPTK_IS_ENUM | |
4445 | || kind == CPTK_IS_POD | |
4446 | || kind == CPTK_IS_POLYMORPHIC | |
4447 | || kind == CPTK_IS_UNION); | |
4448 | ||
4449 | if (kind == CPTK_IS_CONVERTIBLE_TO) | |
4450 | { | |
4451 | sorry ("__is_convertible_to"); | |
4452 | return error_mark_node; | |
4453 | } | |
4454 | ||
4455 | if (type1 == error_mark_node | |
4456 | || ((kind == CPTK_IS_BASE_OF || kind == CPTK_IS_CONVERTIBLE_TO) | |
4457 | && type2 == error_mark_node)) | |
4458 | return error_mark_node; | |
4459 | ||
4460 | if (processing_template_decl) | |
4461 | { | |
4462 | tree trait_expr = make_node (TRAIT_EXPR); | |
4463 | TREE_TYPE (trait_expr) = boolean_type_node; | |
4464 | TRAIT_EXPR_TYPE1 (trait_expr) = type1; | |
4465 | TRAIT_EXPR_TYPE2 (trait_expr) = type2; | |
4466 | TRAIT_EXPR_KIND (trait_expr) = kind; | |
4467 | return trait_expr; | |
4468 | } | |
4469 | ||
10c1d4af PC |
4470 | complete_type (type1); |
4471 | if (type2) | |
4472 | complete_type (type2); | |
4473 | ||
cb68ec50 PC |
4474 | /* The only required diagnostic. */ |
4475 | if (kind == CPTK_IS_BASE_OF | |
4476 | && NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
4477 | && !same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
10c1d4af | 4478 | && !COMPLETE_TYPE_P (type2)) |
cb68ec50 PC |
4479 | { |
4480 | error ("incomplete type %qT not allowed", type2); | |
4481 | return error_mark_node; | |
4482 | } | |
4483 | ||
4484 | return (trait_expr_value (kind, type1, type2) | |
4485 | ? boolean_true_node : boolean_false_node); | |
4486 | } | |
4487 | ||
cf22909c | 4488 | #include "gt-cp-semantics.h" |