]>
Commit | Line | Data |
---|---|---|
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 | |
fbc8d2d3 | 6 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
5088b058 | 7 | 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 MM |
14 | under the terms of the GNU General Public License as published by |
15 | the Free Software Foundation; either version 2, or (at your option) | |
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 | |
ad321293 | 23 | You should have received a copy of the GNU General Public License |
f5adbb8d | 24 | along with GCC; see the file COPYING. If not, write to the Free |
1788952f KC |
25 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
26 | 02110-1301, USA. */ | |
ad321293 MM |
27 | |
28 | #include "config.h" | |
8d052bc7 | 29 | #include "system.h" |
4977bab6 ZW |
30 | #include "coretypes.h" |
31 | #include "tm.h" | |
ad321293 MM |
32 | #include "tree.h" |
33 | #include "cp-tree.h" | |
5f070bc7 | 34 | #include "c-common.h" |
25af8512 | 35 | #include "tree-inline.h" |
6de9cd9a | 36 | #include "tree-mudflap.h" |
ad321293 | 37 | #include "except.h" |
12027a89 | 38 | #include "toplev.h" |
84df082b | 39 | #include "flags.h" |
d9b2d9da | 40 | #include "rtl.h" |
d6684bc8 | 41 | #include "expr.h" |
225ff119 | 42 | #include "output.h" |
ea11ca7e | 43 | #include "timevar.h" |
2b85879e | 44 | #include "debug.h" |
6de9cd9a | 45 | #include "diagnostic.h" |
8cd2462c | 46 | #include "cgraph.h" |
325c3691 | 47 | #include "tree-iterator.h" |
3e1f1ba5 | 48 | #include "vec.h" |
44d10c10 | 49 | #include "target.h" |
ad321293 MM |
50 | |
51 | /* There routines provide a modular interface to perform many parsing | |
52 | operations. They may therefore be used during actual parsing, or | |
53 | during template instantiation, which may be regarded as a | |
0b4d5576 | 54 | degenerate form of parsing. */ |
ad321293 | 55 | |
3a978d72 NN |
56 | static tree maybe_convert_cond (tree); |
57 | static tree simplify_aggr_init_exprs_r (tree *, int *, void *); | |
58 | static void emit_associated_thunks (tree); | |
6de9cd9a | 59 | static tree finalize_nrv_r (tree *, int *, void *); |
4985cde3 | 60 | |
558475f0 | 61 | |
8d241e0b KL |
62 | /* Deferred Access Checking Overview |
63 | --------------------------------- | |
64 | ||
65 | Most C++ expressions and declarations require access checking | |
66 | to be performed during parsing. However, in several cases, | |
67 | this has to be treated differently. | |
68 | ||
69 | For member declarations, access checking has to be deferred | |
70 | until more information about the declaration is known. For | |
71 | example: | |
72 | ||
73 | class A { | |
0cbd7506 | 74 | typedef int X; |
8d241e0b | 75 | public: |
0cbd7506 | 76 | X f(); |
8d241e0b KL |
77 | }; |
78 | ||
79 | A::X A::f(); | |
80 | A::X g(); | |
81 | ||
82 | When we are parsing the function return type `A::X', we don't | |
83 | really know if this is allowed until we parse the function name. | |
84 | ||
85 | Furthermore, some contexts require that access checking is | |
86 | never performed at all. These include class heads, and template | |
87 | instantiations. | |
88 | ||
89 | Typical use of access checking functions is described here: | |
c8094d83 | 90 | |
8d241e0b KL |
91 | 1. When we enter a context that requires certain access checking |
92 | mode, the function `push_deferring_access_checks' is called with | |
93 | DEFERRING argument specifying the desired mode. Access checking | |
94 | may be performed immediately (dk_no_deferred), deferred | |
95 | (dk_deferred), or not performed (dk_no_check). | |
96 | ||
97 | 2. When a declaration such as a type, or a variable, is encountered, | |
98 | the function `perform_or_defer_access_check' is called. It | |
d6b418fa | 99 | maintains a VEC of all deferred checks. |
8d241e0b KL |
100 | |
101 | 3. The global `current_class_type' or `current_function_decl' is then | |
102 | setup by the parser. `enforce_access' relies on these information | |
103 | to check access. | |
104 | ||
105 | 4. Upon exiting the context mentioned in step 1, | |
106 | `perform_deferred_access_checks' is called to check all declaration | |
d6b418fa | 107 | stored in the VEC. `pop_deferring_access_checks' is then |
8d241e0b KL |
108 | called to restore the previous access checking mode. |
109 | ||
110 | In case of parsing error, we simply call `pop_deferring_access_checks' | |
111 | without `perform_deferred_access_checks'. */ | |
112 | ||
3e1f1ba5 NS |
113 | typedef struct deferred_access GTY(()) |
114 | { | |
d6b418fa | 115 | /* A VEC representing name-lookups for which we have deferred |
3e1f1ba5 NS |
116 | checking access controls. We cannot check the accessibility of |
117 | names used in a decl-specifier-seq until we know what is being | |
118 | declared because code like: | |
119 | ||
c8094d83 | 120 | class A { |
0cbd7506 MS |
121 | class B {}; |
122 | B* f(); | |
3e1f1ba5 NS |
123 | } |
124 | ||
125 | A::B* A::f() { return 0; } | |
126 | ||
d6b418fa SM |
127 | is valid, even though `A::B' is not generally accessible. */ |
128 | VEC (deferred_access_check,gc)* GTY(()) deferred_access_checks; | |
c8094d83 | 129 | |
3e1f1ba5 NS |
130 | /* The current mode of access checks. */ |
131 | enum deferring_kind deferring_access_checks_kind; | |
c8094d83 | 132 | |
3e1f1ba5 | 133 | } deferred_access; |
d4e6fecb NS |
134 | DEF_VEC_O (deferred_access); |
135 | DEF_VEC_ALLOC_O (deferred_access,gc); | |
3e1f1ba5 | 136 | |
cf22909c | 137 | /* Data for deferred access checking. */ |
d4e6fecb | 138 | static GTY(()) VEC(deferred_access,gc) *deferred_access_stack; |
3e1f1ba5 | 139 | static GTY(()) unsigned deferred_access_no_check; |
cf22909c KL |
140 | |
141 | /* Save the current deferred access states and start deferred | |
142 | access checking iff DEFER_P is true. */ | |
143 | ||
572c2b17 AP |
144 | void |
145 | push_deferring_access_checks (deferring_kind deferring) | |
cf22909c | 146 | { |
78757caa KL |
147 | /* For context like template instantiation, access checking |
148 | disabling applies to all nested context. */ | |
3e1f1ba5 NS |
149 | if (deferred_access_no_check || deferring == dk_no_check) |
150 | deferred_access_no_check++; | |
cf22909c | 151 | else |
3e1f1ba5 NS |
152 | { |
153 | deferred_access *ptr; | |
cf22909c | 154 | |
d4e6fecb | 155 | ptr = VEC_safe_push (deferred_access, gc, deferred_access_stack, NULL); |
d6b418fa | 156 | ptr->deferred_access_checks = NULL; |
3e1f1ba5 NS |
157 | ptr->deferring_access_checks_kind = deferring; |
158 | } | |
cf22909c KL |
159 | } |
160 | ||
161 | /* Resume deferring access checks again after we stopped doing | |
162 | this previously. */ | |
163 | ||
572c2b17 AP |
164 | void |
165 | resume_deferring_access_checks (void) | |
cf22909c | 166 | { |
3e1f1ba5 NS |
167 | if (!deferred_access_no_check) |
168 | VEC_last (deferred_access, deferred_access_stack) | |
169 | ->deferring_access_checks_kind = dk_deferred; | |
cf22909c KL |
170 | } |
171 | ||
172 | /* Stop deferring access checks. */ | |
173 | ||
572c2b17 AP |
174 | void |
175 | stop_deferring_access_checks (void) | |
cf22909c | 176 | { |
3e1f1ba5 NS |
177 | if (!deferred_access_no_check) |
178 | VEC_last (deferred_access, deferred_access_stack) | |
179 | ->deferring_access_checks_kind = dk_no_deferred; | |
cf22909c KL |
180 | } |
181 | ||
182 | /* Discard the current deferred access checks and restore the | |
183 | previous states. */ | |
184 | ||
572c2b17 AP |
185 | void |
186 | pop_deferring_access_checks (void) | |
cf22909c | 187 | { |
3e1f1ba5 NS |
188 | if (deferred_access_no_check) |
189 | deferred_access_no_check--; | |
190 | else | |
191 | VEC_pop (deferred_access, deferred_access_stack); | |
cf22909c KL |
192 | } |
193 | ||
c8094d83 MS |
194 | /* Returns a TREE_LIST representing the deferred checks. |
195 | The TREE_PURPOSE of each node is the type through which the | |
cf22909c KL |
196 | access occurred; the TREE_VALUE is the declaration named. |
197 | */ | |
198 | ||
d6b418fa | 199 | VEC (deferred_access_check,gc)* |
572c2b17 | 200 | get_deferred_access_checks (void) |
cf22909c | 201 | { |
3e1f1ba5 NS |
202 | if (deferred_access_no_check) |
203 | return NULL; | |
204 | else | |
205 | return (VEC_last (deferred_access, deferred_access_stack) | |
206 | ->deferred_access_checks); | |
cf22909c KL |
207 | } |
208 | ||
209 | /* Take current deferred checks and combine with the | |
210 | previous states if we also defer checks previously. | |
211 | Otherwise perform checks now. */ | |
212 | ||
572c2b17 AP |
213 | void |
214 | pop_to_parent_deferring_access_checks (void) | |
cf22909c | 215 | { |
3e1f1ba5 NS |
216 | if (deferred_access_no_check) |
217 | deferred_access_no_check--; | |
218 | else | |
219 | { | |
d6b418fa | 220 | VEC (deferred_access_check,gc) *checks; |
3e1f1ba5 NS |
221 | deferred_access *ptr; |
222 | ||
223 | checks = (VEC_last (deferred_access, deferred_access_stack) | |
224 | ->deferred_access_checks); | |
225 | ||
226 | VEC_pop (deferred_access, deferred_access_stack); | |
227 | ptr = VEC_last (deferred_access, deferred_access_stack); | |
228 | if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
229 | { | |
230 | /* Check access. */ | |
d6b418fa | 231 | perform_access_checks (checks); |
3e1f1ba5 NS |
232 | } |
233 | else | |
234 | { | |
235 | /* Merge with parent. */ | |
d6b418fa SM |
236 | int i, j; |
237 | deferred_access_check *chk, *probe; | |
c8094d83 | 238 | |
d6b418fa SM |
239 | for (i = 0 ; |
240 | VEC_iterate (deferred_access_check, checks, i, chk) ; | |
241 | ++i) | |
3e1f1ba5 | 242 | { |
d6b418fa SM |
243 | for (j = 0 ; |
244 | VEC_iterate (deferred_access_check, | |
245 | ptr->deferred_access_checks, j, probe) ; | |
246 | ++j) | |
247 | { | |
248 | if (probe->binfo == chk->binfo && | |
249 | probe->decl == chk->decl && | |
250 | probe->diag_decl == chk->diag_decl) | |
251 | goto found; | |
252 | } | |
3e1f1ba5 | 253 | /* Insert into parent's checks. */ |
d6b418fa SM |
254 | VEC_safe_push (deferred_access_check, gc, |
255 | ptr->deferred_access_checks, chk); | |
3e1f1ba5 NS |
256 | found:; |
257 | } | |
258 | } | |
259 | } | |
cf22909c KL |
260 | } |
261 | ||
6b648482 MM |
262 | /* Perform the access checks in CHECKS. The TREE_PURPOSE of each node |
263 | is the BINFO indicating the qualifying scope used to access the | |
264 | DECL node stored in the TREE_VALUE of the node. */ | |
265 | ||
266 | void | |
d6b418fa | 267 | perform_access_checks (VEC (deferred_access_check,gc)* checks) |
6b648482 | 268 | { |
d6b418fa SM |
269 | int i; |
270 | deferred_access_check *chk; | |
271 | ||
272 | if (!checks) | |
273 | return; | |
274 | ||
275 | for (i = 0 ; VEC_iterate (deferred_access_check, checks, i, chk) ; ++i) | |
276 | enforce_access (chk->binfo, chk->decl, chk->diag_decl); | |
6b648482 MM |
277 | } |
278 | ||
25903d03 KL |
279 | /* Perform the deferred access checks. |
280 | ||
281 | After performing the checks, we still have to keep the list | |
282 | `deferred_access_stack->deferred_access_checks' since we may want | |
283 | to check access for them again later in a different context. | |
284 | For example: | |
285 | ||
286 | class A { | |
287 | typedef int X; | |
288 | static X a; | |
289 | }; | |
290 | A::X A::a, x; // No error for `A::a', error for `x' | |
291 | ||
292 | We have to perform deferred access of `A::X', first with `A::a', | |
293 | next with `x'. */ | |
cf22909c | 294 | |
572c2b17 AP |
295 | void |
296 | perform_deferred_access_checks (void) | |
cf22909c | 297 | { |
6b648482 | 298 | perform_access_checks (get_deferred_access_checks ()); |
cf22909c KL |
299 | } |
300 | ||
301 | /* Defer checking the accessibility of DECL, when looked up in | |
02022f3a | 302 | BINFO. DIAG_DECL is the declaration to use to print diagnostics. */ |
cf22909c | 303 | |
572c2b17 | 304 | void |
02022f3a | 305 | perform_or_defer_access_check (tree binfo, tree decl, tree diag_decl) |
cf22909c | 306 | { |
d6b418fa | 307 | int i; |
3e1f1ba5 | 308 | deferred_access *ptr; |
d6b418fa SM |
309 | deferred_access_check *chk; |
310 | deferred_access_check *new_access; | |
311 | ||
cf22909c | 312 | |
3e1f1ba5 NS |
313 | /* Exit if we are in a context that no access checking is performed. |
314 | */ | |
315 | if (deferred_access_no_check) | |
0f2a66c9 | 316 | return; |
c8094d83 | 317 | |
50bc768d | 318 | gcc_assert (TREE_CODE (binfo) == TREE_BINFO); |
0f2a66c9 | 319 | |
3e1f1ba5 | 320 | ptr = VEC_last (deferred_access, deferred_access_stack); |
c8094d83 | 321 | |
cf22909c | 322 | /* If we are not supposed to defer access checks, just check now. */ |
3e1f1ba5 | 323 | if (ptr->deferring_access_checks_kind == dk_no_deferred) |
cf22909c | 324 | { |
02022f3a | 325 | enforce_access (binfo, decl, diag_decl); |
cf22909c KL |
326 | return; |
327 | } | |
c8094d83 | 328 | |
cf22909c | 329 | /* See if we are already going to perform this check. */ |
d6b418fa SM |
330 | for (i = 0 ; |
331 | VEC_iterate (deferred_access_check, | |
332 | ptr->deferred_access_checks, i, chk) ; | |
333 | ++i) | |
334 | { | |
335 | if (chk->decl == decl && chk->binfo == binfo && | |
336 | chk->diag_decl == diag_decl) | |
337 | { | |
338 | return; | |
339 | } | |
340 | } | |
cf22909c | 341 | /* If not, record the check. */ |
d6b418fa SM |
342 | new_access = |
343 | VEC_safe_push (deferred_access_check, gc, | |
344 | ptr->deferred_access_checks, 0); | |
345 | new_access->binfo = binfo; | |
346 | new_access->decl = decl; | |
347 | new_access->diag_decl = diag_decl; | |
cf22909c KL |
348 | } |
349 | ||
838dfd8a | 350 | /* Returns nonzero if the current statement is a full expression, |
f2c5f623 BC |
351 | i.e. temporaries created during that statement should be destroyed |
352 | at the end of the statement. */ | |
35b1567d | 353 | |
f2c5f623 | 354 | int |
3a978d72 | 355 | stmts_are_full_exprs_p (void) |
f2c5f623 | 356 | { |
ae499cce MM |
357 | return current_stmt_tree ()->stmts_are_full_exprs_p; |
358 | } | |
359 | ||
ed3d0b14 ILT |
360 | /* T is a statement. Add it to the statement-tree. This is the C++ |
361 | version. The C/ObjC frontends have a slightly different version of | |
362 | this function. */ | |
363 | ||
364 | tree | |
365 | add_stmt (tree t) | |
366 | { | |
367 | enum tree_code code = TREE_CODE (t); | |
368 | ||
369 | if (EXPR_P (t) && code != LABEL_EXPR) | |
370 | { | |
371 | if (!EXPR_HAS_LOCATION (t)) | |
372 | SET_EXPR_LOCATION (t, input_location); | |
373 | ||
374 | /* When we expand a statement-tree, we must know whether or not the | |
375 | statements are full-expressions. We record that fact here. */ | |
376 | STMT_IS_FULL_EXPR_P (t) = stmts_are_full_exprs_p (); | |
377 | } | |
378 | ||
379 | /* Add T to the statement-tree. Non-side-effect statements need to be | |
380 | recorded during statement expressions. */ | |
381 | append_to_statement_list_force (t, &cur_stmt_list); | |
382 | ||
383 | return t; | |
384 | } | |
385 | ||
ae499cce MM |
386 | /* Returns the stmt_tree (if any) to which statements are currently |
387 | being added. If there is no active statement-tree, NULL is | |
388 | returned. */ | |
389 | ||
390 | stmt_tree | |
3a978d72 | 391 | current_stmt_tree (void) |
ae499cce | 392 | { |
c8094d83 MS |
393 | return (cfun |
394 | ? &cfun->language->base.x_stmt_tree | |
ae499cce | 395 | : &scope_chain->x_stmt_tree); |
f2c5f623 | 396 | } |
35b1567d | 397 | |
543a0daa RH |
398 | /* If statements are full expressions, wrap STMT in a CLEANUP_POINT_EXPR. */ |
399 | ||
400 | static tree | |
401 | maybe_cleanup_point_expr (tree expr) | |
402 | { | |
403 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
0ad28dde | 404 | expr = fold_build_cleanup_point_expr (TREE_TYPE (expr), expr); |
543a0daa RH |
405 | return expr; |
406 | } | |
407 | ||
0ad28dde | 408 | /* Like maybe_cleanup_point_expr except have the type of the new expression be |
22423a1f KH |
409 | void so we don't need to create a temporary variable to hold the inner |
410 | expression. The reason why we do this is because the original type might be | |
411 | an aggregate and we cannot create a temporary variable for that type. */ | |
0ad28dde AP |
412 | |
413 | static tree | |
414 | maybe_cleanup_point_expr_void (tree expr) | |
415 | { | |
416 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
417 | expr = fold_build_cleanup_point_expr (void_type_node, expr); | |
418 | return expr; | |
419 | } | |
420 | ||
421 | ||
422 | ||
543a0daa RH |
423 | /* Create a declaration statement for the declaration given by the DECL. */ |
424 | ||
425 | void | |
350fae66 | 426 | add_decl_expr (tree decl) |
543a0daa | 427 | { |
350fae66 | 428 | tree r = build_stmt (DECL_EXPR, decl); |
b187901e AP |
429 | if (DECL_INITIAL (decl) |
430 | || (DECL_SIZE (decl) && TREE_SIDE_EFFECTS (DECL_SIZE (decl)))) | |
0ad28dde | 431 | r = maybe_cleanup_point_expr_void (r); |
543a0daa RH |
432 | add_stmt (r); |
433 | } | |
434 | ||
f2c5f623 BC |
435 | /* Nonzero if TYPE is an anonymous union or struct type. We have to use a |
436 | flag for this because "A union for which objects or pointers are | |
437 | declared is not an anonymous union" [class.union]. */ | |
35b1567d | 438 | |
f2c5f623 | 439 | int |
3a978d72 | 440 | anon_aggr_type_p (tree node) |
35b1567d | 441 | { |
e2500fed | 442 | return ANON_AGGR_TYPE_P (node); |
35b1567d BC |
443 | } |
444 | ||
f2c5f623 | 445 | /* Finish a scope. */ |
35b1567d | 446 | |
20aff0b3 | 447 | tree |
325c3691 | 448 | do_poplevel (tree stmt_list) |
35b1567d | 449 | { |
325c3691 | 450 | tree block = NULL; |
35b1567d | 451 | |
f2c5f623 | 452 | if (stmts_are_full_exprs_p ()) |
325c3691 | 453 | block = poplevel (kept_level_p (), 1, 0); |
f2c5f623 | 454 | |
325c3691 | 455 | stmt_list = pop_stmt_list (stmt_list); |
c8094d83 | 456 | |
325c3691 RH |
457 | if (!processing_template_decl) |
458 | { | |
459 | stmt_list = c_build_bind_expr (block, stmt_list); | |
460 | /* ??? See c_end_compound_stmt re statement expressions. */ | |
35b1567d BC |
461 | } |
462 | ||
325c3691 | 463 | return stmt_list; |
35b1567d BC |
464 | } |
465 | ||
c8094d83 | 466 | /* Begin a new scope. */ |
35b1567d | 467 | |
325c3691 | 468 | static tree |
92bc1323 | 469 | do_pushlevel (scope_kind sk) |
35b1567d | 470 | { |
325c3691 | 471 | tree ret = push_stmt_list (); |
f2c5f623 | 472 | if (stmts_are_full_exprs_p ()) |
325c3691 RH |
473 | begin_scope (sk, NULL); |
474 | return ret; | |
475 | } | |
5a508662 RH |
476 | |
477 | /* Queue a cleanup. CLEANUP is an expression/statement to be executed | |
478 | when the current scope is exited. EH_ONLY is true when this is not | |
479 | meant to apply to normal control flow transfer. */ | |
480 | ||
481 | void | |
482 | push_cleanup (tree decl, tree cleanup, bool eh_only) | |
483 | { | |
484 | tree stmt = build_stmt (CLEANUP_STMT, NULL, cleanup, decl); | |
485 | CLEANUP_EH_ONLY (stmt) = eh_only; | |
486 | add_stmt (stmt); | |
487 | CLEANUP_BODY (stmt) = push_stmt_list (); | |
488 | } | |
325c3691 | 489 | |
caf2523d RH |
490 | /* Begin a conditional that might contain a declaration. When generating |
491 | normal code, we want the declaration to appear before the statement | |
492 | containing the conditional. When generating template code, we want the | |
350fae66 | 493 | conditional to be rendered as the raw DECL_EXPR. */ |
325c3691 RH |
494 | |
495 | static void | |
caf2523d | 496 | begin_cond (tree *cond_p) |
325c3691 | 497 | { |
caf2523d RH |
498 | if (processing_template_decl) |
499 | *cond_p = push_stmt_list (); | |
500 | } | |
501 | ||
502 | /* Finish such a conditional. */ | |
503 | ||
504 | static void | |
505 | finish_cond (tree *cond_p, tree expr) | |
506 | { | |
507 | if (processing_template_decl) | |
35b1567d | 508 | { |
caf2523d | 509 | tree cond = pop_stmt_list (*cond_p); |
350fae66 | 510 | if (TREE_CODE (cond) == DECL_EXPR) |
caf2523d | 511 | expr = cond; |
5d80a306 DG |
512 | |
513 | check_for_bare_parameter_packs (expr); | |
35b1567d | 514 | } |
caf2523d | 515 | *cond_p = expr; |
35b1567d BC |
516 | } |
517 | ||
325c3691 RH |
518 | /* If *COND_P specifies a conditional with a declaration, transform the |
519 | loop such that | |
0cbd7506 MS |
520 | while (A x = 42) { } |
521 | for (; A x = 42;) { } | |
325c3691 | 522 | becomes |
0cbd7506 MS |
523 | while (true) { A x = 42; if (!x) break; } |
524 | for (;;) { A x = 42; if (!x) break; } | |
caf2523d RH |
525 | The statement list for BODY will be empty if the conditional did |
526 | not declare anything. */ | |
c8094d83 | 527 | |
325c3691 | 528 | static void |
caf2523d | 529 | simplify_loop_decl_cond (tree *cond_p, tree body) |
325c3691 | 530 | { |
caf2523d | 531 | tree cond, if_stmt; |
325c3691 | 532 | |
caf2523d RH |
533 | if (!TREE_SIDE_EFFECTS (body)) |
534 | return; | |
325c3691 | 535 | |
caf2523d RH |
536 | cond = *cond_p; |
537 | *cond_p = boolean_true_node; | |
c8094d83 | 538 | |
caf2523d RH |
539 | if_stmt = begin_if_stmt (); |
540 | cond = build_unary_op (TRUTH_NOT_EXPR, cond, 0); | |
541 | finish_if_stmt_cond (cond, if_stmt); | |
542 | finish_break_stmt (); | |
543 | finish_then_clause (if_stmt); | |
544 | finish_if_stmt (if_stmt); | |
545 | } | |
325c3691 | 546 | |
35b1567d BC |
547 | /* Finish a goto-statement. */ |
548 | ||
3e4d04a1 | 549 | tree |
3a978d72 | 550 | finish_goto_stmt (tree destination) |
35b1567d BC |
551 | { |
552 | if (TREE_CODE (destination) == IDENTIFIER_NODE) | |
553 | destination = lookup_label (destination); | |
554 | ||
555 | /* We warn about unused labels with -Wunused. That means we have to | |
556 | mark the used labels as used. */ | |
557 | if (TREE_CODE (destination) == LABEL_DECL) | |
558 | TREE_USED (destination) = 1; | |
fc2b8477 MM |
559 | else |
560 | { | |
561 | /* The DESTINATION is being used as an rvalue. */ | |
562 | if (!processing_template_decl) | |
563 | destination = decay_conversion (destination); | |
564 | /* We don't inline calls to functions with computed gotos. | |
565 | Those functions are typically up to some funny business, | |
566 | and may be depending on the labels being at particular | |
567 | addresses, or some such. */ | |
568 | DECL_UNINLINABLE (current_function_decl) = 1; | |
569 | } | |
c8094d83 | 570 | |
35b1567d BC |
571 | check_goto (destination); |
572 | ||
9e14e18f | 573 | return add_stmt (build_stmt (GOTO_EXPR, destination)); |
35b1567d BC |
574 | } |
575 | ||
ed5511d9 MM |
576 | /* COND is the condition-expression for an if, while, etc., |
577 | statement. Convert it to a boolean value, if appropriate. */ | |
578 | ||
8ce33230 | 579 | static tree |
3a978d72 | 580 | maybe_convert_cond (tree cond) |
ed5511d9 MM |
581 | { |
582 | /* Empty conditions remain empty. */ | |
583 | if (!cond) | |
584 | return NULL_TREE; | |
585 | ||
586 | /* Wait until we instantiate templates before doing conversion. */ | |
587 | if (processing_template_decl) | |
588 | return cond; | |
589 | ||
590 | /* Do the conversion. */ | |
591 | cond = convert_from_reference (cond); | |
fbc8d2d3 ILT |
592 | |
593 | if (TREE_CODE (cond) == MODIFY_EXPR | |
594 | && !TREE_NO_WARNING (cond) | |
595 | && warn_parentheses) | |
596 | { | |
597 | warning (OPT_Wparentheses, | |
598 | "suggest parentheses around assignment used as truth value"); | |
599 | TREE_NO_WARNING (cond) = 1; | |
600 | } | |
601 | ||
ed5511d9 MM |
602 | return condition_conversion (cond); |
603 | } | |
604 | ||
9bfadf57 | 605 | /* Finish an expression-statement, whose EXPRESSION is as indicated. */ |
a7e4cfa0 | 606 | |
3e4d04a1 | 607 | tree |
3a978d72 | 608 | finish_expr_stmt (tree expr) |
ad321293 | 609 | { |
3e4d04a1 RH |
610 | tree r = NULL_TREE; |
611 | ||
ce4a0391 | 612 | if (expr != NULL_TREE) |
ad321293 | 613 | { |
a5bcc582 | 614 | if (!processing_template_decl) |
3a5b9284 RH |
615 | { |
616 | if (warn_sequence_point) | |
617 | verify_sequence_points (expr); | |
618 | expr = convert_to_void (expr, "statement"); | |
619 | } | |
47d4c811 NS |
620 | else if (!type_dependent_expression_p (expr)) |
621 | convert_to_void (build_non_dependent_expr (expr), "statement"); | |
325c3691 | 622 | |
5d80a306 DG |
623 | check_for_bare_parameter_packs (expr); |
624 | ||
325c3691 | 625 | /* Simplification of inner statement expressions, compound exprs, |
ca5b80f3 | 626 | etc can result in us already having an EXPR_STMT. */ |
543a0daa RH |
627 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) |
628 | { | |
629 | if (TREE_CODE (expr) != EXPR_STMT) | |
630 | expr = build_stmt (EXPR_STMT, expr); | |
0ad28dde | 631 | expr = maybe_cleanup_point_expr_void (expr); |
543a0daa RH |
632 | } |
633 | ||
325c3691 | 634 | r = add_stmt (expr); |
35b1567d | 635 | } |
364460b6 | 636 | |
35b1567d | 637 | finish_stmt (); |
558475f0 | 638 | |
3e4d04a1 | 639 | return r; |
35b1567d BC |
640 | } |
641 | ||
35b1567d | 642 | |
ad321293 MM |
643 | /* Begin an if-statement. Returns a newly created IF_STMT if |
644 | appropriate. */ | |
645 | ||
646 | tree | |
3a978d72 | 647 | begin_if_stmt (void) |
ad321293 | 648 | { |
325c3691 RH |
649 | tree r, scope; |
650 | scope = do_pushlevel (sk_block); | |
0dfdeca6 | 651 | r = build_stmt (IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 | 652 | TREE_CHAIN (r) = scope; |
caf2523d | 653 | begin_cond (&IF_COND (r)); |
ad321293 MM |
654 | return r; |
655 | } | |
656 | ||
657 | /* Process the COND of an if-statement, which may be given by | |
658 | IF_STMT. */ | |
659 | ||
c8094d83 | 660 | void |
3a978d72 | 661 | finish_if_stmt_cond (tree cond, tree if_stmt) |
ad321293 | 662 | { |
caf2523d RH |
663 | finish_cond (&IF_COND (if_stmt), maybe_convert_cond (cond)); |
664 | add_stmt (if_stmt); | |
325c3691 | 665 | THEN_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
666 | } |
667 | ||
668 | /* Finish the then-clause of an if-statement, which may be given by | |
669 | IF_STMT. */ | |
670 | ||
671 | tree | |
3a978d72 | 672 | finish_then_clause (tree if_stmt) |
ad321293 | 673 | { |
325c3691 | 674 | THEN_CLAUSE (if_stmt) = pop_stmt_list (THEN_CLAUSE (if_stmt)); |
35b1567d | 675 | return if_stmt; |
ad321293 MM |
676 | } |
677 | ||
678 | /* Begin the else-clause of an if-statement. */ | |
679 | ||
325c3691 RH |
680 | void |
681 | begin_else_clause (tree if_stmt) | |
ad321293 | 682 | { |
325c3691 | 683 | ELSE_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
684 | } |
685 | ||
686 | /* Finish the else-clause of an if-statement, which may be given by | |
687 | IF_STMT. */ | |
688 | ||
689 | void | |
3a978d72 | 690 | finish_else_clause (tree if_stmt) |
ad321293 | 691 | { |
325c3691 | 692 | ELSE_CLAUSE (if_stmt) = pop_stmt_list (ELSE_CLAUSE (if_stmt)); |
ad321293 MM |
693 | } |
694 | ||
dfbb4f34 | 695 | /* Finish an if-statement. */ |
ad321293 | 696 | |
c8094d83 | 697 | void |
325c3691 | 698 | finish_if_stmt (tree if_stmt) |
ad321293 | 699 | { |
325c3691 RH |
700 | tree scope = TREE_CHAIN (if_stmt); |
701 | TREE_CHAIN (if_stmt) = NULL; | |
702 | add_stmt (do_poplevel (scope)); | |
ad321293 | 703 | finish_stmt (); |
62e00e94 | 704 | empty_if_body_warning (THEN_CLAUSE (if_stmt), ELSE_CLAUSE (if_stmt)); |
35b1567d BC |
705 | } |
706 | ||
ad321293 MM |
707 | /* Begin a while-statement. Returns a newly created WHILE_STMT if |
708 | appropriate. */ | |
709 | ||
710 | tree | |
3a978d72 | 711 | begin_while_stmt (void) |
ad321293 MM |
712 | { |
713 | tree r; | |
0dfdeca6 | 714 | r = build_stmt (WHILE_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 715 | add_stmt (r); |
325c3691 | 716 | WHILE_BODY (r) = do_pushlevel (sk_block); |
caf2523d | 717 | begin_cond (&WHILE_COND (r)); |
ad321293 MM |
718 | return r; |
719 | } | |
720 | ||
27d26ee7 | 721 | /* Process the COND of a while-statement, which may be given by |
ad321293 MM |
722 | WHILE_STMT. */ |
723 | ||
c8094d83 | 724 | void |
3a978d72 | 725 | finish_while_stmt_cond (tree cond, tree while_stmt) |
ad321293 | 726 | { |
caf2523d RH |
727 | finish_cond (&WHILE_COND (while_stmt), maybe_convert_cond (cond)); |
728 | simplify_loop_decl_cond (&WHILE_COND (while_stmt), WHILE_BODY (while_stmt)); | |
ad321293 MM |
729 | } |
730 | ||
731 | /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
732 | ||
c8094d83 | 733 | void |
3a978d72 | 734 | finish_while_stmt (tree while_stmt) |
ad321293 | 735 | { |
325c3691 | 736 | WHILE_BODY (while_stmt) = do_poplevel (WHILE_BODY (while_stmt)); |
ad321293 MM |
737 | finish_stmt (); |
738 | } | |
739 | ||
740 | /* Begin a do-statement. Returns a newly created DO_STMT if | |
741 | appropriate. */ | |
742 | ||
743 | tree | |
3a978d72 | 744 | begin_do_stmt (void) |
ad321293 | 745 | { |
0dfdeca6 | 746 | tree r = build_stmt (DO_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 747 | add_stmt (r); |
325c3691 | 748 | DO_BODY (r) = push_stmt_list (); |
35b1567d | 749 | return r; |
ad321293 MM |
750 | } |
751 | ||
752 | /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
753 | ||
754 | void | |
3a978d72 | 755 | finish_do_body (tree do_stmt) |
ad321293 | 756 | { |
62e00e94 DM |
757 | tree body = DO_BODY (do_stmt) = pop_stmt_list (DO_BODY (do_stmt)); |
758 | ||
759 | if (TREE_CODE (body) == STATEMENT_LIST && STATEMENT_LIST_TAIL (body)) | |
760 | body = STATEMENT_LIST_TAIL (body)->stmt; | |
761 | ||
762 | if (IS_EMPTY_STMT (body)) | |
763 | warning (OPT_Wempty_body, | |
764 | "suggest explicit braces around empty body in %<do%> statement"); | |
ad321293 MM |
765 | } |
766 | ||
767 | /* Finish a do-statement, which may be given by DO_STMT, and whose | |
768 | COND is as indicated. */ | |
769 | ||
770 | void | |
3a978d72 | 771 | finish_do_stmt (tree cond, tree do_stmt) |
ad321293 | 772 | { |
ed5511d9 | 773 | cond = maybe_convert_cond (cond); |
35b1567d BC |
774 | DO_COND (do_stmt) = cond; |
775 | finish_stmt (); | |
776 | } | |
ed5511d9 | 777 | |
ad321293 MM |
778 | /* Finish a return-statement. The EXPRESSION returned, if any, is as |
779 | indicated. */ | |
780 | ||
3e4d04a1 | 781 | tree |
3a978d72 | 782 | finish_return_stmt (tree expr) |
ad321293 | 783 | { |
3e4d04a1 | 784 | tree r; |
0c9b182b | 785 | bool no_warning; |
3e4d04a1 | 786 | |
0c9b182b | 787 | expr = check_return_expr (expr, &no_warning); |
1799e5d5 RH |
788 | |
789 | if (flag_openmp && !check_omp_return ()) | |
790 | return error_mark_node; | |
35b1567d | 791 | if (!processing_template_decl) |
efee38a9 | 792 | { |
44d10c10 | 793 | if (DECL_DESTRUCTOR_P (current_function_decl) |
c8094d83 | 794 | || (DECL_CONSTRUCTOR_P (current_function_decl) |
44d10c10 | 795 | && targetm.cxx.cdtor_returns_this ())) |
efee38a9 MM |
796 | { |
797 | /* Similarly, all destructors must run destructors for | |
798 | base-classes before returning. So, all returns in a | |
dfbb4f34 | 799 | destructor get sent to the DTOR_LABEL; finish_function emits |
efee38a9 | 800 | code to return a value there. */ |
44d10c10 | 801 | return finish_goto_stmt (cdtor_label); |
efee38a9 MM |
802 | } |
803 | } | |
543a0daa | 804 | |
5088b058 | 805 | r = build_stmt (RETURN_EXPR, expr); |
0c9b182b | 806 | TREE_NO_WARNING (r) |= no_warning; |
0ad28dde | 807 | r = maybe_cleanup_point_expr_void (r); |
543a0daa | 808 | r = add_stmt (r); |
35b1567d | 809 | finish_stmt (); |
3e4d04a1 RH |
810 | |
811 | return r; | |
35b1567d | 812 | } |
efee38a9 | 813 | |
ad321293 MM |
814 | /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */ |
815 | ||
816 | tree | |
3a978d72 | 817 | begin_for_stmt (void) |
ad321293 MM |
818 | { |
819 | tree r; | |
820 | ||
c8094d83 | 821 | r = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE, |
0dfdeca6 | 822 | NULL_TREE, NULL_TREE); |
325c3691 RH |
823 | |
824 | if (flag_new_for_scope > 0) | |
825 | TREE_CHAIN (r) = do_pushlevel (sk_for); | |
ad321293 | 826 | |
894ca2c9 RH |
827 | if (processing_template_decl) |
828 | FOR_INIT_STMT (r) = push_stmt_list (); | |
829 | ||
ad321293 MM |
830 | return r; |
831 | } | |
832 | ||
833 | /* Finish the for-init-statement of a for-statement, which may be | |
834 | given by FOR_STMT. */ | |
835 | ||
836 | void | |
3a978d72 | 837 | finish_for_init_stmt (tree for_stmt) |
ad321293 | 838 | { |
894ca2c9 RH |
839 | if (processing_template_decl) |
840 | FOR_INIT_STMT (for_stmt) = pop_stmt_list (FOR_INIT_STMT (for_stmt)); | |
325c3691 RH |
841 | add_stmt (for_stmt); |
842 | FOR_BODY (for_stmt) = do_pushlevel (sk_block); | |
caf2523d | 843 | begin_cond (&FOR_COND (for_stmt)); |
ad321293 MM |
844 | } |
845 | ||
846 | /* Finish the COND of a for-statement, which may be given by | |
847 | FOR_STMT. */ | |
848 | ||
849 | void | |
3a978d72 | 850 | finish_for_cond (tree cond, tree for_stmt) |
ad321293 | 851 | { |
caf2523d RH |
852 | finish_cond (&FOR_COND (for_stmt), maybe_convert_cond (cond)); |
853 | simplify_loop_decl_cond (&FOR_COND (for_stmt), FOR_BODY (for_stmt)); | |
ad321293 MM |
854 | } |
855 | ||
856 | /* Finish the increment-EXPRESSION in a for-statement, which may be | |
857 | given by FOR_STMT. */ | |
858 | ||
859 | void | |
3a978d72 | 860 | finish_for_expr (tree expr, tree for_stmt) |
ad321293 | 861 | { |
543a0daa RH |
862 | if (!expr) |
863 | return; | |
6f69173e MM |
864 | /* If EXPR is an overloaded function, issue an error; there is no |
865 | context available to use to perform overload resolution. */ | |
543a0daa | 866 | if (type_unknown_p (expr)) |
6f69173e MM |
867 | { |
868 | cxx_incomplete_type_error (expr, TREE_TYPE (expr)); | |
869 | expr = error_mark_node; | |
870 | } | |
bcd46a7c AP |
871 | if (!processing_template_decl) |
872 | { | |
873 | if (warn_sequence_point) | |
0cbd7506 | 874 | verify_sequence_points (expr); |
bcd46a7c AP |
875 | expr = convert_to_void (expr, "3rd expression in for"); |
876 | } | |
877 | else if (!type_dependent_expression_p (expr)) | |
878 | convert_to_void (build_non_dependent_expr (expr), "3rd expression in for"); | |
0ad28dde | 879 | expr = maybe_cleanup_point_expr_void (expr); |
5d80a306 | 880 | check_for_bare_parameter_packs (expr); |
35b1567d | 881 | FOR_EXPR (for_stmt) = expr; |
ad321293 MM |
882 | } |
883 | ||
884 | /* Finish the body of a for-statement, which may be given by | |
885 | FOR_STMT. The increment-EXPR for the loop must be | |
886 | provided. */ | |
887 | ||
888 | void | |
3a978d72 | 889 | finish_for_stmt (tree for_stmt) |
ad321293 | 890 | { |
325c3691 RH |
891 | FOR_BODY (for_stmt) = do_poplevel (FOR_BODY (for_stmt)); |
892 | ||
ad321293 | 893 | /* Pop the scope for the body of the loop. */ |
325c3691 RH |
894 | if (flag_new_for_scope > 0) |
895 | { | |
896 | tree scope = TREE_CHAIN (for_stmt); | |
897 | TREE_CHAIN (for_stmt) = NULL; | |
898 | add_stmt (do_poplevel (scope)); | |
899 | } | |
900 | ||
c8094d83 | 901 | finish_stmt (); |
ad321293 MM |
902 | } |
903 | ||
904 | /* Finish a break-statement. */ | |
905 | ||
3e4d04a1 | 906 | tree |
3a978d72 | 907 | finish_break_stmt (void) |
ad321293 | 908 | { |
fbc315db | 909 | return add_stmt (build_stmt (BREAK_STMT)); |
35b1567d BC |
910 | } |
911 | ||
ad321293 MM |
912 | /* Finish a continue-statement. */ |
913 | ||
3e4d04a1 | 914 | tree |
3a978d72 | 915 | finish_continue_stmt (void) |
ad321293 | 916 | { |
fbc315db | 917 | return add_stmt (build_stmt (CONTINUE_STMT)); |
ad321293 MM |
918 | } |
919 | ||
35b1567d BC |
920 | /* Begin a switch-statement. Returns a new SWITCH_STMT if |
921 | appropriate. */ | |
922 | ||
923 | tree | |
3a978d72 | 924 | begin_switch_stmt (void) |
35b1567d | 925 | { |
325c3691 RH |
926 | tree r, scope; |
927 | ||
6f9fdf4d | 928 | r = build_stmt (SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 RH |
929 | |
930 | scope = do_pushlevel (sk_block); | |
931 | TREE_CHAIN (r) = scope; | |
ebaae582 | 932 | begin_cond (&SWITCH_STMT_COND (r)); |
325c3691 | 933 | |
527f0080 | 934 | return r; |
ad321293 MM |
935 | } |
936 | ||
527f0080 | 937 | /* Finish the cond of a switch-statement. */ |
ad321293 | 938 | |
527f0080 | 939 | void |
3a978d72 | 940 | finish_switch_cond (tree cond, tree switch_stmt) |
ad321293 | 941 | { |
6f9fdf4d | 942 | tree orig_type = NULL; |
35b1567d | 943 | if (!processing_template_decl) |
373eb3b3 | 944 | { |
56cb9733 MM |
945 | tree index; |
946 | ||
35b1567d | 947 | /* Convert the condition to an integer or enumeration type. */ |
b746c5dc | 948 | cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); |
35b1567d | 949 | if (cond == NULL_TREE) |
373eb3b3 | 950 | { |
35b1567d BC |
951 | error ("switch quantity not an integer"); |
952 | cond = error_mark_node; | |
953 | } | |
6f9fdf4d | 954 | orig_type = TREE_TYPE (cond); |
35b1567d BC |
955 | if (cond != error_mark_node) |
956 | { | |
0a72704b MM |
957 | /* [stmt.switch] |
958 | ||
959 | Integral promotions are performed. */ | |
960 | cond = perform_integral_promotions (cond); | |
543a0daa | 961 | cond = maybe_cleanup_point_expr (cond); |
373eb3b3 | 962 | } |
56cb9733 | 963 | |
25c8b645 JJ |
964 | if (cond != error_mark_node) |
965 | { | |
966 | index = get_unwidened (cond, NULL_TREE); | |
967 | /* We can't strip a conversion from a signed type to an unsigned, | |
968 | because if we did, int_fits_type_p would do the wrong thing | |
969 | when checking case values for being in range, | |
970 | and it's too hard to do the right thing. */ | |
8df83eae RK |
971 | if (TYPE_UNSIGNED (TREE_TYPE (cond)) |
972 | == TYPE_UNSIGNED (TREE_TYPE (index))) | |
25c8b645 JJ |
973 | cond = index; |
974 | } | |
ad321293 | 975 | } |
ebaae582 SB |
976 | finish_cond (&SWITCH_STMT_COND (switch_stmt), cond); |
977 | SWITCH_STMT_TYPE (switch_stmt) = orig_type; | |
caf2523d | 978 | add_stmt (switch_stmt); |
56cb9733 | 979 | push_switch (switch_stmt); |
ebaae582 | 980 | SWITCH_STMT_BODY (switch_stmt) = push_stmt_list (); |
5d80a306 | 981 | check_for_bare_parameter_packs (cond); |
ad321293 MM |
982 | } |
983 | ||
984 | /* Finish the body of a switch-statement, which may be given by | |
985 | SWITCH_STMT. The COND to switch on is indicated. */ | |
986 | ||
987 | void | |
3a978d72 | 988 | finish_switch_stmt (tree switch_stmt) |
ad321293 | 989 | { |
325c3691 RH |
990 | tree scope; |
991 | ||
ebaae582 SB |
992 | SWITCH_STMT_BODY (switch_stmt) = |
993 | pop_stmt_list (SWITCH_STMT_BODY (switch_stmt)); | |
c8094d83 | 994 | pop_switch (); |
ad321293 | 995 | finish_stmt (); |
325c3691 RH |
996 | |
997 | scope = TREE_CHAIN (switch_stmt); | |
998 | TREE_CHAIN (switch_stmt) = NULL; | |
999 | add_stmt (do_poplevel (scope)); | |
ad321293 MM |
1000 | } |
1001 | ||
ad321293 MM |
1002 | /* Begin a try-block. Returns a newly-created TRY_BLOCK if |
1003 | appropriate. */ | |
1004 | ||
1005 | tree | |
3a978d72 | 1006 | begin_try_block (void) |
ad321293 | 1007 | { |
0dfdeca6 | 1008 | tree r = build_stmt (TRY_BLOCK, NULL_TREE, NULL_TREE); |
ae499cce | 1009 | add_stmt (r); |
325c3691 | 1010 | TRY_STMTS (r) = push_stmt_list (); |
35b1567d | 1011 | return r; |
ad321293 MM |
1012 | } |
1013 | ||
eaf6fb90 MM |
1014 | /* Likewise, for a function-try-block. The block returned in |
1015 | *COMPOUND_STMT is an artificial outer scope, containing the | |
1016 | function-try-block. */ | |
0dde4175 JM |
1017 | |
1018 | tree | |
eaf6fb90 | 1019 | begin_function_try_block (tree *compound_stmt) |
0dde4175 | 1020 | { |
eaf6fb90 MM |
1021 | tree r; |
1022 | /* This outer scope does not exist in the C++ standard, but we need | |
1023 | a place to put __FUNCTION__ and similar variables. */ | |
1024 | *compound_stmt = begin_compound_stmt (0); | |
1025 | r = begin_try_block (); | |
35b1567d | 1026 | FN_TRY_BLOCK_P (r) = 1; |
35b1567d | 1027 | return r; |
0dde4175 JM |
1028 | } |
1029 | ||
ad321293 MM |
1030 | /* Finish a try-block, which may be given by TRY_BLOCK. */ |
1031 | ||
1032 | void | |
3a978d72 | 1033 | finish_try_block (tree try_block) |
ad321293 | 1034 | { |
325c3691 RH |
1035 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
1036 | TRY_HANDLERS (try_block) = push_stmt_list (); | |
ad321293 MM |
1037 | } |
1038 | ||
efa8eda3 MM |
1039 | /* Finish the body of a cleanup try-block, which may be given by |
1040 | TRY_BLOCK. */ | |
1041 | ||
62409b39 | 1042 | void |
3a978d72 | 1043 | finish_cleanup_try_block (tree try_block) |
62409b39 | 1044 | { |
325c3691 | 1045 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
62409b39 MM |
1046 | } |
1047 | ||
f1dedc31 MM |
1048 | /* Finish an implicitly generated try-block, with a cleanup is given |
1049 | by CLEANUP. */ | |
1050 | ||
1051 | void | |
3a978d72 | 1052 | finish_cleanup (tree cleanup, tree try_block) |
f1dedc31 | 1053 | { |
35b1567d BC |
1054 | TRY_HANDLERS (try_block) = cleanup; |
1055 | CLEANUP_P (try_block) = 1; | |
f1dedc31 MM |
1056 | } |
1057 | ||
0dde4175 JM |
1058 | /* Likewise, for a function-try-block. */ |
1059 | ||
1060 | void | |
3a978d72 | 1061 | finish_function_try_block (tree try_block) |
0dde4175 | 1062 | { |
325c3691 RH |
1063 | finish_try_block (try_block); |
1064 | /* FIXME : something queer about CTOR_INITIALIZER somehow following | |
1065 | the try block, but moving it inside. */ | |
b35d4555 | 1066 | in_function_try_handler = 1; |
0dde4175 JM |
1067 | } |
1068 | ||
ad321293 MM |
1069 | /* Finish a handler-sequence for a try-block, which may be given by |
1070 | TRY_BLOCK. */ | |
1071 | ||
1072 | void | |
3a978d72 | 1073 | finish_handler_sequence (tree try_block) |
ad321293 | 1074 | { |
325c3691 | 1075 | TRY_HANDLERS (try_block) = pop_stmt_list (TRY_HANDLERS (try_block)); |
35b1567d | 1076 | check_handlers (TRY_HANDLERS (try_block)); |
ad321293 MM |
1077 | } |
1078 | ||
eaf6fb90 MM |
1079 | /* Finish the handler-seq for a function-try-block, given by |
1080 | TRY_BLOCK. COMPOUND_STMT is the outer block created by | |
1081 | begin_function_try_block. */ | |
0dde4175 JM |
1082 | |
1083 | void | |
eaf6fb90 | 1084 | finish_function_handler_sequence (tree try_block, tree compound_stmt) |
0dde4175 | 1085 | { |
b35d4555 | 1086 | in_function_try_handler = 0; |
325c3691 | 1087 | finish_handler_sequence (try_block); |
eaf6fb90 | 1088 | finish_compound_stmt (compound_stmt); |
35b1567d BC |
1089 | } |
1090 | ||
ad321293 MM |
1091 | /* Begin a handler. Returns a HANDLER if appropriate. */ |
1092 | ||
1093 | tree | |
3a978d72 | 1094 | begin_handler (void) |
ad321293 MM |
1095 | { |
1096 | tree r; | |
325c3691 | 1097 | |
0dfdeca6 | 1098 | r = build_stmt (HANDLER, NULL_TREE, NULL_TREE); |
ae499cce | 1099 | add_stmt (r); |
325c3691 | 1100 | |
1a6025b4 JM |
1101 | /* Create a binding level for the eh_info and the exception object |
1102 | cleanup. */ | |
325c3691 RH |
1103 | HANDLER_BODY (r) = do_pushlevel (sk_catch); |
1104 | ||
ad321293 MM |
1105 | return r; |
1106 | } | |
1107 | ||
1108 | /* Finish the handler-parameters for a handler, which may be given by | |
b35d4555 MM |
1109 | HANDLER. DECL is the declaration for the catch parameter, or NULL |
1110 | if this is a `catch (...)' clause. */ | |
ad321293 | 1111 | |
1a6025b4 | 1112 | void |
3a978d72 | 1113 | finish_handler_parms (tree decl, tree handler) |
b35d4555 | 1114 | { |
1a6025b4 | 1115 | tree type = NULL_TREE; |
b35d4555 MM |
1116 | if (processing_template_decl) |
1117 | { | |
1118 | if (decl) | |
1119 | { | |
1120 | decl = pushdecl (decl); | |
1121 | decl = push_template_decl (decl); | |
325c3691 | 1122 | HANDLER_PARMS (handler) = decl; |
1a6025b4 | 1123 | type = TREE_TYPE (decl); |
b35d4555 MM |
1124 | } |
1125 | } | |
35b1567d | 1126 | else |
1a6025b4 | 1127 | type = expand_start_catch_block (decl); |
1a6025b4 | 1128 | HANDLER_TYPE (handler) = type; |
b80cfdcd | 1129 | if (!processing_template_decl && type) |
6cad4e17 | 1130 | mark_used (eh_type_info (type)); |
35b1567d BC |
1131 | } |
1132 | ||
1133 | /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
1134 | the return value from the matching call to finish_handler_parms. */ | |
1135 | ||
1136 | void | |
3a978d72 | 1137 | finish_handler (tree handler) |
35b1567d BC |
1138 | { |
1139 | if (!processing_template_decl) | |
1a6025b4 | 1140 | expand_end_catch_block (); |
325c3691 | 1141 | HANDLER_BODY (handler) = do_poplevel (HANDLER_BODY (handler)); |
35b1567d BC |
1142 | } |
1143 | ||
5882f0f3 | 1144 | /* Begin a compound statement. FLAGS contains some bits that control the |
5995ebfb | 1145 | behavior and context. If BCS_NO_SCOPE is set, the compound statement |
5882f0f3 | 1146 | does not define a scope. If BCS_FN_BODY is set, this is the outermost |
c8094d83 | 1147 | block of a function. If BCS_TRY_BLOCK is set, this is the block |
5882f0f3 RH |
1148 | created on behalf of a TRY statement. Returns a token to be passed to |
1149 | finish_compound_stmt. */ | |
ad321293 MM |
1150 | |
1151 | tree | |
325c3691 | 1152 | begin_compound_stmt (unsigned int flags) |
ad321293 | 1153 | { |
325c3691 | 1154 | tree r; |
558475f0 | 1155 | |
325c3691 RH |
1156 | if (flags & BCS_NO_SCOPE) |
1157 | { | |
1158 | r = push_stmt_list (); | |
1159 | STATEMENT_LIST_NO_SCOPE (r) = 1; | |
1160 | ||
1161 | /* Normally, we try hard to keep the BLOCK for a statement-expression. | |
1162 | But, if it's a statement-expression with a scopeless block, there's | |
1163 | nothing to keep, and we don't want to accidentally keep a block | |
c8094d83 | 1164 | *inside* the scopeless block. */ |
325c3691 RH |
1165 | keep_next_level (false); |
1166 | } | |
f1dedc31 | 1167 | else |
325c3691 RH |
1168 | r = do_pushlevel (flags & BCS_TRY_BLOCK ? sk_try : sk_block); |
1169 | ||
5882f0f3 RH |
1170 | /* When processing a template, we need to remember where the braces were, |
1171 | so that we can set up identical scopes when instantiating the template | |
1172 | later. BIND_EXPR is a handy candidate for this. | |
1173 | Note that do_poplevel won't create a BIND_EXPR itself here (and thus | |
1174 | result in nested BIND_EXPRs), since we don't build BLOCK nodes when | |
1175 | processing templates. */ | |
1176 | if (processing_template_decl) | |
325c3691 | 1177 | { |
f293ce4b | 1178 | r = build3 (BIND_EXPR, NULL, NULL, r, NULL); |
5882f0f3 RH |
1179 | BIND_EXPR_TRY_BLOCK (r) = (flags & BCS_TRY_BLOCK) != 0; |
1180 | BIND_EXPR_BODY_BLOCK (r) = (flags & BCS_FN_BODY) != 0; | |
325c3691 RH |
1181 | TREE_SIDE_EFFECTS (r) = 1; |
1182 | } | |
ad321293 MM |
1183 | |
1184 | return r; | |
1185 | } | |
1186 | ||
5882f0f3 | 1187 | /* Finish a compound-statement, which is given by STMT. */ |
ad321293 | 1188 | |
325c3691 RH |
1189 | void |
1190 | finish_compound_stmt (tree stmt) | |
ad321293 | 1191 | { |
5882f0f3 RH |
1192 | if (TREE_CODE (stmt) == BIND_EXPR) |
1193 | BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt)); | |
325c3691 RH |
1194 | else if (STATEMENT_LIST_NO_SCOPE (stmt)) |
1195 | stmt = pop_stmt_list (stmt); | |
7a3397c7 | 1196 | else |
5f070bc7 ZL |
1197 | { |
1198 | /* Destroy any ObjC "super" receivers that may have been | |
1199 | created. */ | |
1200 | objc_clear_super_receiver (); | |
1201 | ||
1202 | stmt = do_poplevel (stmt); | |
1203 | } | |
ad321293 | 1204 | |
325c3691 RH |
1205 | /* ??? See c_end_compound_stmt wrt statement expressions. */ |
1206 | add_stmt (stmt); | |
ad321293 | 1207 | finish_stmt (); |
ad321293 MM |
1208 | } |
1209 | ||
6de9cd9a DN |
1210 | /* Finish an asm-statement, whose components are a STRING, some |
1211 | OUTPUT_OPERANDS, some INPUT_OPERANDS, and some CLOBBERS. Also note | |
1212 | whether the asm-statement should be considered volatile. */ | |
7dc5bd62 | 1213 | |
3e4d04a1 | 1214 | tree |
6de9cd9a DN |
1215 | finish_asm_stmt (int volatile_p, tree string, tree output_operands, |
1216 | tree input_operands, tree clobbers) | |
35b1567d BC |
1217 | { |
1218 | tree r; | |
abfc8a36 | 1219 | tree t; |
5544530a PB |
1220 | int ninputs = list_length (input_operands); |
1221 | int noutputs = list_length (output_operands); | |
abfc8a36 | 1222 | |
abfc8a36 | 1223 | if (!processing_template_decl) |
40b18c0a | 1224 | { |
74f0c611 RH |
1225 | const char *constraint; |
1226 | const char **oconstraints; | |
1227 | bool allows_mem, allows_reg, is_inout; | |
1228 | tree operand; | |
40b18c0a | 1229 | int i; |
40b18c0a | 1230 | |
74f0c611 RH |
1231 | oconstraints = (const char **) alloca (noutputs * sizeof (char *)); |
1232 | ||
1233 | string = resolve_asm_operand_names (string, output_operands, | |
1234 | input_operands); | |
1235 | ||
1236 | for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
40b18c0a | 1237 | { |
74f0c611 RH |
1238 | operand = TREE_VALUE (t); |
1239 | ||
1240 | /* ??? Really, this should not be here. Users should be using a | |
1241 | proper lvalue, dammit. But there's a long history of using | |
1242 | casts in the output operands. In cases like longlong.h, this | |
1243 | becomes a primitive form of typechecking -- if the cast can be | |
1244 | removed, then the output operand had a type of the proper width; | |
1245 | otherwise we'll get an error. Gross, but ... */ | |
1246 | STRIP_NOPS (operand); | |
1247 | ||
1248 | if (!lvalue_or_else (operand, lv_asm)) | |
1249 | operand = error_mark_node; | |
1250 | ||
3db45ab5 | 1251 | if (operand != error_mark_node |
5544530a PB |
1252 | && (TREE_READONLY (operand) |
1253 | || CP_TYPE_CONST_P (TREE_TYPE (operand)) | |
3db45ab5 MS |
1254 | /* Functions are not modifiable, even though they are |
1255 | lvalues. */ | |
1256 | || TREE_CODE (TREE_TYPE (operand)) == FUNCTION_TYPE | |
1257 | || TREE_CODE (TREE_TYPE (operand)) == METHOD_TYPE | |
1258 | /* If it's an aggregate and any field is const, then it is | |
1259 | effectively const. */ | |
1260 | || (CLASS_TYPE_P (TREE_TYPE (operand)) | |
1261 | && C_TYPE_FIELDS_READONLY (TREE_TYPE (operand))))) | |
fabb00fc | 1262 | readonly_error (operand, "assignment (via 'asm' output)"); |
5544530a | 1263 | |
74f0c611 RH |
1264 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); |
1265 | oconstraints[i] = constraint; | |
1266 | ||
1267 | if (parse_output_constraint (&constraint, i, ninputs, noutputs, | |
1268 | &allows_mem, &allows_reg, &is_inout)) | |
1269 | { | |
1270 | /* If the operand is going to end up in memory, | |
1271 | mark it addressable. */ | |
1272 | if (!allows_reg && !cxx_mark_addressable (operand)) | |
1273 | operand = error_mark_node; | |
1274 | } | |
1275 | else | |
1276 | operand = error_mark_node; | |
1277 | ||
1278 | TREE_VALUE (t) = operand; | |
1279 | } | |
1280 | ||
1281 | for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t)) | |
1282 | { | |
1283 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
c8094d83 | 1284 | operand = decay_conversion (TREE_VALUE (t)); |
74f0c611 | 1285 | |
40b18c0a MM |
1286 | /* If the type of the operand hasn't been determined (e.g., |
1287 | because it involves an overloaded function), then issue | |
1288 | an error message. There's no context available to | |
1289 | resolve the overloading. */ | |
74f0c611 | 1290 | if (TREE_TYPE (operand) == unknown_type_node) |
40b18c0a | 1291 | { |
c8094d83 | 1292 | error ("type of asm operand %qE could not be determined", |
0cbd7506 | 1293 | TREE_VALUE (t)); |
74f0c611 | 1294 | operand = error_mark_node; |
40b18c0a | 1295 | } |
40b18c0a | 1296 | |
74f0c611 RH |
1297 | if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0, |
1298 | oconstraints, &allows_mem, &allows_reg)) | |
40b18c0a | 1299 | { |
74f0c611 RH |
1300 | /* If the operand is going to end up in memory, |
1301 | mark it addressable. */ | |
b4c33883 AP |
1302 | if (!allows_reg && allows_mem) |
1303 | { | |
1304 | /* Strip the nops as we allow this case. FIXME, this really | |
1305 | should be rejected or made deprecated. */ | |
1306 | STRIP_NOPS (operand); | |
1307 | if (!cxx_mark_addressable (operand)) | |
1308 | operand = error_mark_node; | |
1309 | } | |
40b18c0a | 1310 | } |
74f0c611 RH |
1311 | else |
1312 | operand = error_mark_node; | |
40b18c0a | 1313 | |
74f0c611 | 1314 | TREE_VALUE (t) = operand; |
40b18c0a MM |
1315 | } |
1316 | } | |
abfc8a36 | 1317 | |
e130a54b | 1318 | r = build_stmt (ASM_EXPR, string, |
0dfdeca6 BC |
1319 | output_operands, input_operands, |
1320 | clobbers); | |
5544530a | 1321 | ASM_VOLATILE_P (r) = volatile_p || noutputs == 0; |
0ad28dde | 1322 | r = maybe_cleanup_point_expr_void (r); |
3e4d04a1 | 1323 | return add_stmt (r); |
ad321293 | 1324 | } |
b4c4a9ec | 1325 | |
f01b0acb MM |
1326 | /* Finish a label with the indicated NAME. */ |
1327 | ||
a723baf1 | 1328 | tree |
3a978d72 | 1329 | finish_label_stmt (tree name) |
f01b0acb | 1330 | { |
5b030314 | 1331 | tree decl = define_label (input_location, name); |
417fa55b LM |
1332 | |
1333 | if (decl == error_mark_node) | |
1334 | return error_mark_node; | |
1335 | ||
9e14e18f | 1336 | return add_stmt (build_stmt (LABEL_EXPR, decl)); |
f01b0acb MM |
1337 | } |
1338 | ||
acef433b MM |
1339 | /* Finish a series of declarations for local labels. G++ allows users |
1340 | to declare "local" labels, i.e., labels with scope. This extension | |
1341 | is useful when writing code involving statement-expressions. */ | |
1342 | ||
1343 | void | |
3a978d72 | 1344 | finish_label_decl (tree name) |
acef433b MM |
1345 | { |
1346 | tree decl = declare_local_label (name); | |
350fae66 | 1347 | add_decl_expr (decl); |
acef433b MM |
1348 | } |
1349 | ||
659e5a7a | 1350 | /* When DECL goes out of scope, make sure that CLEANUP is executed. */ |
f1dedc31 | 1351 | |
c8094d83 | 1352 | void |
3a978d72 | 1353 | finish_decl_cleanup (tree decl, tree cleanup) |
f1dedc31 | 1354 | { |
325c3691 | 1355 | push_cleanup (decl, cleanup, false); |
35b1567d BC |
1356 | } |
1357 | ||
659e5a7a | 1358 | /* If the current scope exits with an exception, run CLEANUP. */ |
24bef158 | 1359 | |
659e5a7a | 1360 | void |
3a978d72 | 1361 | finish_eh_cleanup (tree cleanup) |
24bef158 | 1362 | { |
325c3691 | 1363 | push_cleanup (NULL, cleanup, true); |
35b1567d BC |
1364 | } |
1365 | ||
2282d28d MM |
1366 | /* The MEM_INITS is a list of mem-initializers, in reverse of the |
1367 | order they were written by the user. Each node is as for | |
1368 | emit_mem_initializers. */ | |
bf3428d0 MM |
1369 | |
1370 | void | |
2282d28d | 1371 | finish_mem_initializers (tree mem_inits) |
bf3428d0 | 1372 | { |
2282d28d MM |
1373 | /* Reorder the MEM_INITS so that they are in the order they appeared |
1374 | in the source program. */ | |
1375 | mem_inits = nreverse (mem_inits); | |
bf3428d0 | 1376 | |
a0de9d20 | 1377 | if (processing_template_decl) |
5d80a306 DG |
1378 | { |
1379 | tree mem; | |
1380 | ||
1381 | for (mem = mem_inits; mem; mem = TREE_CHAIN (mem)) | |
1382 | { | |
1383 | /* If the TREE_PURPOSE is a TYPE_PACK_EXPANSION, skip the | |
1384 | check for bare parameter packs in the TREE_VALUE, because | |
1385 | any parameter packs in the TREE_VALUE have already been | |
1386 | bound as part of the TREE_PURPOSE. See | |
1387 | make_pack_expansion for more information. */ | |
1388 | if (TREE_CODE (TREE_PURPOSE (mem)) != TYPE_PACK_EXPANSION) | |
1389 | check_for_bare_parameter_packs (TREE_VALUE (mem)); | |
1390 | } | |
1391 | ||
1392 | add_stmt (build_min_nt (CTOR_INITIALIZER, mem_inits)); | |
1393 | } | |
cdd2559c | 1394 | else |
2282d28d | 1395 | emit_mem_initializers (mem_inits); |
558475f0 MM |
1396 | } |
1397 | ||
b4c4a9ec MM |
1398 | /* Finish a parenthesized expression EXPR. */ |
1399 | ||
1400 | tree | |
3a978d72 | 1401 | finish_parenthesized_expr (tree expr) |
b4c4a9ec | 1402 | { |
6615c446 | 1403 | if (EXPR_P (expr)) |
78ef5b89 | 1404 | /* This inhibits warnings in c_common_truthvalue_conversion. */ |
31ec7d2f | 1405 | TREE_NO_WARNING (expr) = 1; |
b4c4a9ec | 1406 | |
19420d00 NS |
1407 | if (TREE_CODE (expr) == OFFSET_REF) |
1408 | /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1409 | enclosed in parentheses. */ | |
1410 | PTRMEM_OK_P (expr) = 0; | |
c8094d83 | 1411 | |
7a8380ae NS |
1412 | if (TREE_CODE (expr) == STRING_CST) |
1413 | PAREN_STRING_LITERAL_P (expr) = 1; | |
c8094d83 | 1414 | |
b4c4a9ec MM |
1415 | return expr; |
1416 | } | |
1417 | ||
a723baf1 MM |
1418 | /* Finish a reference to a non-static data member (DECL) that is not |
1419 | preceded by `.' or `->'. */ | |
1420 | ||
1421 | tree | |
a3f10e50 | 1422 | finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) |
a723baf1 | 1423 | { |
50bc768d | 1424 | gcc_assert (TREE_CODE (decl) == FIELD_DECL); |
a723baf1 | 1425 | |
a3f10e50 | 1426 | if (!object) |
a723baf1 | 1427 | { |
c8094d83 | 1428 | if (current_function_decl |
a723baf1 | 1429 | && DECL_STATIC_FUNCTION_P (current_function_decl)) |
dee15844 | 1430 | error ("invalid use of member %q+D in static member function", decl); |
a723baf1 | 1431 | else |
dee15844 | 1432 | error ("invalid use of non-static data member %q+D", decl); |
a723baf1 MM |
1433 | error ("from this location"); |
1434 | ||
1435 | return error_mark_node; | |
1436 | } | |
1437 | TREE_USED (current_class_ptr) = 1; | |
58e1d54c | 1438 | if (processing_template_decl && !qualifying_scope) |
a723baf1 | 1439 | { |
a3f10e50 | 1440 | tree type = TREE_TYPE (decl); |
a723baf1 | 1441 | |
a3f10e50 NS |
1442 | if (TREE_CODE (type) == REFERENCE_TYPE) |
1443 | type = TREE_TYPE (type); | |
1444 | else | |
1445 | { | |
f4f206f4 | 1446 | /* Set the cv qualifiers. */ |
a3f10e50 | 1447 | int quals = cp_type_quals (TREE_TYPE (current_class_ref)); |
c8094d83 | 1448 | |
a3f10e50 NS |
1449 | if (DECL_MUTABLE_P (decl)) |
1450 | quals &= ~TYPE_QUAL_CONST; | |
9e95d15f | 1451 | |
a3f10e50 NS |
1452 | quals |= cp_type_quals (TREE_TYPE (decl)); |
1453 | type = cp_build_qualified_type (type, quals); | |
1454 | } | |
c8094d83 | 1455 | |
44de5aeb | 1456 | return build_min (COMPONENT_REF, type, object, decl, NULL_TREE); |
a3f10e50 NS |
1457 | } |
1458 | else | |
1459 | { | |
1460 | tree access_type = TREE_TYPE (object); | |
1461 | tree lookup_context = context_for_name_lookup (decl); | |
c8094d83 | 1462 | |
a3f10e50 | 1463 | while (!DERIVED_FROM_P (lookup_context, access_type)) |
a723baf1 MM |
1464 | { |
1465 | access_type = TYPE_CONTEXT (access_type); | |
9f01ded6 | 1466 | while (access_type && DECL_P (access_type)) |
a723baf1 | 1467 | access_type = DECL_CONTEXT (access_type); |
a723baf1 | 1468 | |
a3f10e50 NS |
1469 | if (!access_type) |
1470 | { | |
dee15844 | 1471 | error ("object missing in reference to %q+D", decl); |
a3f10e50 NS |
1472 | error ("from this location"); |
1473 | return error_mark_node; | |
1474 | } | |
9f01ded6 KL |
1475 | } |
1476 | ||
5c425df5 | 1477 | /* If PROCESSING_TEMPLATE_DECL is nonzero here, then |
58e1d54c KL |
1478 | QUALIFYING_SCOPE is also non-null. Wrap this in a SCOPE_REF |
1479 | for now. */ | |
1480 | if (processing_template_decl) | |
02ed62dd MM |
1481 | return build_qualified_name (TREE_TYPE (decl), |
1482 | qualifying_scope, | |
1483 | DECL_NAME (decl), | |
1484 | /*template_p=*/false); | |
58e1d54c | 1485 | |
02022f3a SM |
1486 | perform_or_defer_access_check (TYPE_BINFO (access_type), decl, |
1487 | decl); | |
a723baf1 MM |
1488 | |
1489 | /* If the data member was named `C::M', convert `*this' to `C' | |
1490 | first. */ | |
1491 | if (qualifying_scope) | |
1492 | { | |
1493 | tree binfo = NULL_TREE; | |
1494 | object = build_scoped_ref (object, qualifying_scope, | |
1495 | &binfo); | |
1496 | } | |
1497 | ||
1498 | return build_class_member_access_expr (object, decl, | |
1499 | /*access_path=*/NULL_TREE, | |
1500 | /*preserve_reference=*/false); | |
1501 | } | |
1502 | } | |
1503 | ||
ee76b931 MM |
1504 | /* DECL was the declaration to which a qualified-id resolved. Issue |
1505 | an error message if it is not accessible. If OBJECT_TYPE is | |
1506 | non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1507 | type of `*x', or `x', respectively. If the DECL was named as | |
1508 | `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1509 | ||
1510 | void | |
c8094d83 MS |
1511 | check_accessibility_of_qualified_id (tree decl, |
1512 | tree object_type, | |
ee76b931 MM |
1513 | tree nested_name_specifier) |
1514 | { | |
1515 | tree scope; | |
1516 | tree qualifying_type = NULL_TREE; | |
95b4aca6 | 1517 | |
77880ae4 | 1518 | /* If we're not checking, return immediately. */ |
95b4aca6 NS |
1519 | if (deferred_access_no_check) |
1520 | return; | |
c8094d83 | 1521 | |
ee76b931 MM |
1522 | /* Determine the SCOPE of DECL. */ |
1523 | scope = context_for_name_lookup (decl); | |
1524 | /* If the SCOPE is not a type, then DECL is not a member. */ | |
1525 | if (!TYPE_P (scope)) | |
1526 | return; | |
1527 | /* Compute the scope through which DECL is being accessed. */ | |
c8094d83 | 1528 | if (object_type |
ee76b931 MM |
1529 | /* OBJECT_TYPE might not be a class type; consider: |
1530 | ||
1531 | class A { typedef int I; }; | |
1532 | I *p; | |
1533 | p->A::I::~I(); | |
1534 | ||
0cbd7506 | 1535 | In this case, we will have "A::I" as the DECL, but "I" as the |
ee76b931 MM |
1536 | OBJECT_TYPE. */ |
1537 | && CLASS_TYPE_P (object_type) | |
1538 | && DERIVED_FROM_P (scope, object_type)) | |
1539 | /* If we are processing a `->' or `.' expression, use the type of the | |
1540 | left-hand side. */ | |
1541 | qualifying_type = object_type; | |
1542 | else if (nested_name_specifier) | |
1543 | { | |
1544 | /* If the reference is to a non-static member of the | |
1545 | current class, treat it as if it were referenced through | |
1546 | `this'. */ | |
1547 | if (DECL_NONSTATIC_MEMBER_P (decl) | |
1548 | && current_class_ptr | |
1549 | && DERIVED_FROM_P (scope, current_class_type)) | |
1550 | qualifying_type = current_class_type; | |
1551 | /* Otherwise, use the type indicated by the | |
1552 | nested-name-specifier. */ | |
1553 | else | |
1554 | qualifying_type = nested_name_specifier; | |
1555 | } | |
1556 | else | |
1557 | /* Otherwise, the name must be from the current class or one of | |
1558 | its bases. */ | |
1559 | qualifying_type = currently_open_derived_class (scope); | |
1560 | ||
fc429748 MM |
1561 | if (qualifying_type |
1562 | /* It is possible for qualifying type to be a TEMPLATE_TYPE_PARM | |
1563 | or similar in a default argument value. */ | |
1564 | && CLASS_TYPE_P (qualifying_type) | |
1565 | && !dependent_type_p (qualifying_type)) | |
02022f3a SM |
1566 | perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl, |
1567 | decl); | |
ee76b931 MM |
1568 | } |
1569 | ||
1570 | /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1571 | class named to the left of the "::" operator. DONE is true if this | |
1572 | expression is a complete postfix-expression; it is false if this | |
1573 | expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
02ed62dd MM |
1574 | iff this expression is the operand of '&'. TEMPLATE_P is true iff |
1575 | the qualified-id was of the form "A::template B". TEMPLATE_ARG_P | |
1576 | is true iff this qualified name appears as a template argument. */ | |
ee76b931 MM |
1577 | |
1578 | tree | |
3db45ab5 MS |
1579 | finish_qualified_id_expr (tree qualifying_class, |
1580 | tree expr, | |
02ed62dd | 1581 | bool done, |
3db45ab5 | 1582 | bool address_p, |
02ed62dd MM |
1583 | bool template_p, |
1584 | bool template_arg_p) | |
ee76b931 | 1585 | { |
d4f0f205 MM |
1586 | gcc_assert (TYPE_P (qualifying_class)); |
1587 | ||
5e08432e MM |
1588 | if (error_operand_p (expr)) |
1589 | return error_mark_node; | |
1590 | ||
7eab6e7b | 1591 | if (DECL_P (expr) || BASELINK_P (expr)) |
d4f0f205 | 1592 | mark_used (expr); |
d4f0f205 | 1593 | |
02ed62dd MM |
1594 | if (template_p) |
1595 | check_template_keyword (expr); | |
1596 | ||
ee76b931 MM |
1597 | /* If EXPR occurs as the operand of '&', use special handling that |
1598 | permits a pointer-to-member. */ | |
1599 | if (address_p && done) | |
1600 | { | |
1601 | if (TREE_CODE (expr) == SCOPE_REF) | |
1602 | expr = TREE_OPERAND (expr, 1); | |
c8094d83 | 1603 | expr = build_offset_ref (qualifying_class, expr, |
a5ac359a | 1604 | /*address_p=*/true); |
ee76b931 MM |
1605 | return expr; |
1606 | } | |
1607 | ||
02ed62dd MM |
1608 | /* Within the scope of a class, turn references to non-static |
1609 | members into expression of the form "this->...". */ | |
1610 | if (template_arg_p) | |
1611 | /* But, within a template argument, we do not want make the | |
1612 | transformation, as there is no "this" pointer. */ | |
1613 | ; | |
1614 | else if (TREE_CODE (expr) == FIELD_DECL) | |
a3f10e50 NS |
1615 | expr = finish_non_static_data_member (expr, current_class_ref, |
1616 | qualifying_class); | |
ee76b931 MM |
1617 | else if (BASELINK_P (expr) && !processing_template_decl) |
1618 | { | |
ee76b931 MM |
1619 | tree fns; |
1620 | ||
1621 | /* See if any of the functions are non-static members. */ | |
1622 | fns = BASELINK_FUNCTIONS (expr); | |
1623 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
1624 | fns = TREE_OPERAND (fns, 0); | |
ee76b931 MM |
1625 | /* If so, the expression may be relative to the current |
1626 | class. */ | |
821eaf2a | 1627 | if (!shared_member_p (fns) |
c8094d83 | 1628 | && current_class_type |
ee76b931 | 1629 | && DERIVED_FROM_P (qualifying_class, current_class_type)) |
c8094d83 | 1630 | expr = (build_class_member_access_expr |
ee76b931 MM |
1631 | (maybe_dummy_object (qualifying_class, NULL), |
1632 | expr, | |
1633 | BASELINK_ACCESS_BINFO (expr), | |
1634 | /*preserve_reference=*/false)); | |
1635 | else if (done) | |
a5ac359a MM |
1636 | /* The expression is a qualified name whose address is not |
1637 | being taken. */ | |
1638 | expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false); | |
ee76b931 MM |
1639 | } |
1640 | ||
1641 | return expr; | |
1642 | } | |
1643 | ||
b69b1501 MM |
1644 | /* Begin a statement-expression. The value returned must be passed to |
1645 | finish_stmt_expr. */ | |
b4c4a9ec | 1646 | |
c8094d83 | 1647 | tree |
3a978d72 | 1648 | begin_stmt_expr (void) |
b4c4a9ec | 1649 | { |
325c3691 | 1650 | return push_stmt_list (); |
35b1567d BC |
1651 | } |
1652 | ||
a5bcc582 | 1653 | /* Process the final expression of a statement expression. EXPR can be |
85a56c9d MM |
1654 | NULL, if the final expression is empty. Return a STATEMENT_LIST |
1655 | containing all the statements in the statement-expression, or | |
1656 | ERROR_MARK_NODE if there was an error. */ | |
a5bcc582 NS |
1657 | |
1658 | tree | |
325c3691 | 1659 | finish_stmt_expr_expr (tree expr, tree stmt_expr) |
a5bcc582 | 1660 | { |
72e4661a | 1661 | if (error_operand_p (expr)) |
76b9a2a1 AP |
1662 | { |
1663 | /* The type of the statement-expression is the type of the last | |
1664 | expression. */ | |
1665 | TREE_TYPE (stmt_expr) = error_mark_node; | |
1666 | return error_mark_node; | |
1667 | } | |
c8094d83 | 1668 | |
85a56c9d | 1669 | /* If the last statement does not have "void" type, then the value |
3db45ab5 | 1670 | of the last statement is the value of the entire expression. */ |
a5bcc582 NS |
1671 | if (expr) |
1672 | { | |
c6c7698d JM |
1673 | tree type = TREE_TYPE (expr); |
1674 | ||
1675 | if (processing_template_decl) | |
1676 | { | |
1677 | expr = build_stmt (EXPR_STMT, expr); | |
1678 | expr = add_stmt (expr); | |
1679 | /* Mark the last statement so that we can recognize it as such at | |
1680 | template-instantiation time. */ | |
1681 | EXPR_STMT_STMT_EXPR_RESULT (expr) = 1; | |
1682 | } | |
1683 | else if (VOID_TYPE_P (type)) | |
a5bcc582 | 1684 | { |
c6c7698d JM |
1685 | /* Just treat this like an ordinary statement. */ |
1686 | expr = finish_expr_stmt (expr); | |
1687 | } | |
1688 | else | |
1689 | { | |
1690 | /* It actually has a value we need to deal with. First, force it | |
1691 | to be an rvalue so that we won't need to build up a copy | |
1692 | constructor call later when we try to assign it to something. */ | |
1693 | expr = force_rvalue (expr); | |
85a56c9d MM |
1694 | if (error_operand_p (expr)) |
1695 | return error_mark_node; | |
c6c7698d JM |
1696 | |
1697 | /* Update for array-to-pointer decay. */ | |
2692eb7d | 1698 | type = TREE_TYPE (expr); |
c6c7698d JM |
1699 | |
1700 | /* Wrap it in a CLEANUP_POINT_EXPR and add it to the list like a | |
1701 | normal statement, but don't convert to void or actually add | |
1702 | the EXPR_STMT. */ | |
1703 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
1704 | expr = maybe_cleanup_point_expr (expr); | |
1705 | add_stmt (expr); | |
85a56c9d | 1706 | } |
c6c7698d | 1707 | |
85a56c9d MM |
1708 | /* The type of the statement-expression is the type of the last |
1709 | expression. */ | |
1710 | TREE_TYPE (stmt_expr) = type; | |
a5bcc582 | 1711 | } |
c8094d83 | 1712 | |
85a56c9d | 1713 | return stmt_expr; |
a5bcc582 NS |
1714 | } |
1715 | ||
303b7406 NS |
1716 | /* Finish a statement-expression. EXPR should be the value returned |
1717 | by the previous begin_stmt_expr. Returns an expression | |
1718 | representing the statement-expression. */ | |
b4c4a9ec | 1719 | |
c8094d83 | 1720 | tree |
325c3691 | 1721 | finish_stmt_expr (tree stmt_expr, bool has_no_scope) |
b4c4a9ec | 1722 | { |
85a56c9d MM |
1723 | tree type; |
1724 | tree result; | |
325c3691 | 1725 | |
85a56c9d MM |
1726 | if (error_operand_p (stmt_expr)) |
1727 | return error_mark_node; | |
325c3691 | 1728 | |
85a56c9d | 1729 | gcc_assert (TREE_CODE (stmt_expr) == STATEMENT_LIST); |
325c3691 | 1730 | |
85a56c9d MM |
1731 | type = TREE_TYPE (stmt_expr); |
1732 | result = pop_stmt_list (stmt_expr); | |
c6c7698d | 1733 | TREE_TYPE (result) = type; |
6f80451c | 1734 | |
a5bcc582 | 1735 | if (processing_template_decl) |
325c3691 RH |
1736 | { |
1737 | result = build_min (STMT_EXPR, type, result); | |
1738 | TREE_SIDE_EFFECTS (result) = 1; | |
1739 | STMT_EXPR_NO_SCOPE (result) = has_no_scope; | |
1740 | } | |
c6c7698d | 1741 | else if (CLASS_TYPE_P (type)) |
a5bcc582 | 1742 | { |
c6c7698d JM |
1743 | /* Wrap the statement-expression in a TARGET_EXPR so that the |
1744 | temporary object created by the final expression is destroyed at | |
1745 | the end of the full-expression containing the | |
1746 | statement-expression. */ | |
1747 | result = force_target_expr (type, result); | |
a5bcc582 | 1748 | } |
325c3691 | 1749 | |
b4c4a9ec MM |
1750 | return result; |
1751 | } | |
1752 | ||
b3445994 | 1753 | /* Perform Koenig lookup. FN is the postfix-expression representing |
fa531100 MM |
1754 | the function (or functions) to call; ARGS are the arguments to the |
1755 | call. Returns the functions to be considered by overload | |
1756 | resolution. */ | |
b3445994 MM |
1757 | |
1758 | tree | |
1759 | perform_koenig_lookup (tree fn, tree args) | |
1760 | { | |
1761 | tree identifier = NULL_TREE; | |
1762 | tree functions = NULL_TREE; | |
1763 | ||
1764 | /* Find the name of the overloaded function. */ | |
1765 | if (TREE_CODE (fn) == IDENTIFIER_NODE) | |
1766 | identifier = fn; | |
1767 | else if (is_overloaded_fn (fn)) | |
1768 | { | |
1769 | functions = fn; | |
1770 | identifier = DECL_NAME (get_first_fn (functions)); | |
1771 | } | |
1772 | else if (DECL_P (fn)) | |
1773 | { | |
1774 | functions = fn; | |
1775 | identifier = DECL_NAME (fn); | |
1776 | } | |
1777 | ||
1778 | /* A call to a namespace-scope function using an unqualified name. | |
1779 | ||
1780 | Do Koenig lookup -- unless any of the arguments are | |
1781 | type-dependent. */ | |
1782 | if (!any_type_dependent_arguments_p (args)) | |
1783 | { | |
1784 | fn = lookup_arg_dependent (identifier, functions, args); | |
1785 | if (!fn) | |
1786 | /* The unqualified name could not be resolved. */ | |
1787 | fn = unqualified_fn_lookup_error (identifier); | |
1788 | } | |
b3445994 MM |
1789 | |
1790 | return fn; | |
1791 | } | |
1792 | ||
4ba126e4 MM |
1793 | /* Generate an expression for `FN (ARGS)'. |
1794 | ||
1795 | If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
1796 | as a virtual call, even if FN is virtual. (This flag is set when | |
1797 | encountering an expression where the function name is explicitly | |
1798 | qualified. For example a call to `X::f' never generates a virtual | |
1799 | call.) | |
1800 | ||
1801 | Returns code for the call. */ | |
b4c4a9ec | 1802 | |
c8094d83 | 1803 | tree |
6d80c4b9 | 1804 | finish_call_expr (tree fn, tree args, bool disallow_virtual, bool koenig_p) |
b4c4a9ec | 1805 | { |
d17811fd MM |
1806 | tree result; |
1807 | tree orig_fn; | |
1808 | tree orig_args; | |
1809 | ||
4ba126e4 MM |
1810 | if (fn == error_mark_node || args == error_mark_node) |
1811 | return error_mark_node; | |
1812 | ||
4ba126e4 | 1813 | /* ARGS should be a list of arguments. */ |
50bc768d | 1814 | gcc_assert (!args || TREE_CODE (args) == TREE_LIST); |
4860b874 | 1815 | gcc_assert (!TYPE_P (fn)); |
a759e627 | 1816 | |
d17811fd MM |
1817 | orig_fn = fn; |
1818 | orig_args = args; | |
1819 | ||
1820 | if (processing_template_decl) | |
1821 | { | |
1822 | if (type_dependent_expression_p (fn) | |
1823 | || any_type_dependent_arguments_p (args)) | |
6d80c4b9 | 1824 | { |
5039610b | 1825 | result = build_nt_call_list (fn, args); |
6d80c4b9 MM |
1826 | KOENIG_LOOKUP_P (result) = koenig_p; |
1827 | return result; | |
1828 | } | |
d17811fd MM |
1829 | if (!BASELINK_P (fn) |
1830 | && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
1831 | && TREE_TYPE (fn) != unknown_type_node) | |
1832 | fn = build_non_dependent_expr (fn); | |
1833 | args = build_non_dependent_args (orig_args); | |
1834 | } | |
1835 | ||
eff3a276 MM |
1836 | if (is_overloaded_fn (fn)) |
1837 | fn = baselink_for_fns (fn); | |
a723baf1 | 1838 | |
d17811fd | 1839 | result = NULL_TREE; |
4ba126e4 | 1840 | if (BASELINK_P (fn)) |
03d82991 | 1841 | { |
4ba126e4 MM |
1842 | tree object; |
1843 | ||
1844 | /* A call to a member function. From [over.call.func]: | |
1845 | ||
1846 | If the keyword this is in scope and refers to the class of | |
1847 | that member function, or a derived class thereof, then the | |
1848 | function call is transformed into a qualified function call | |
1849 | using (*this) as the postfix-expression to the left of the | |
1850 | . operator.... [Otherwise] a contrived object of type T | |
c8094d83 | 1851 | becomes the implied object argument. |
4ba126e4 | 1852 | |
0cbd7506 | 1853 | This paragraph is unclear about this situation: |
4ba126e4 MM |
1854 | |
1855 | struct A { void f(); }; | |
1856 | struct B : public A {}; | |
1857 | struct C : public A { void g() { B::f(); }}; | |
1858 | ||
1859 | In particular, for `B::f', this paragraph does not make clear | |
c8094d83 | 1860 | whether "the class of that member function" refers to `A' or |
4ba126e4 | 1861 | to `B'. We believe it refers to `B'. */ |
c8094d83 | 1862 | if (current_class_type |
4ba126e4 MM |
1863 | && DERIVED_FROM_P (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1864 | current_class_type) | |
1865 | && current_class_ref) | |
127b8136 MM |
1866 | object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1867 | NULL); | |
4ba126e4 MM |
1868 | else |
1869 | { | |
1870 | tree representative_fn; | |
b4c4a9ec | 1871 | |
4ba126e4 MM |
1872 | representative_fn = BASELINK_FUNCTIONS (fn); |
1873 | if (TREE_CODE (representative_fn) == TEMPLATE_ID_EXPR) | |
1874 | representative_fn = TREE_OPERAND (representative_fn, 0); | |
1875 | representative_fn = get_first_fn (representative_fn); | |
1876 | object = build_dummy_object (DECL_CONTEXT (representative_fn)); | |
1877 | } | |
b4c4a9ec | 1878 | |
d17811fd MM |
1879 | if (processing_template_decl) |
1880 | { | |
1881 | if (type_dependent_expression_p (object)) | |
5039610b | 1882 | return build_nt_call_list (orig_fn, orig_args); |
d17811fd MM |
1883 | object = build_non_dependent_expr (object); |
1884 | } | |
1885 | ||
1886 | result = build_new_method_call (object, fn, args, NULL_TREE, | |
c8094d83 | 1887 | (disallow_virtual |
63c9a190 MM |
1888 | ? LOOKUP_NONVIRTUAL : 0), |
1889 | /*fn_p=*/NULL); | |
4ba126e4 MM |
1890 | } |
1891 | else if (is_overloaded_fn (fn)) | |
16c35a1f RH |
1892 | { |
1893 | /* If the function is an overloaded builtin, resolve it. */ | |
1894 | if (TREE_CODE (fn) == FUNCTION_DECL | |
58646b77 PB |
1895 | && (DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL |
1896 | || DECL_BUILT_IN_CLASS (fn) == BUILT_IN_MD)) | |
0cbd7506 | 1897 | result = resolve_overloaded_builtin (fn, args); |
16c35a1f RH |
1898 | |
1899 | if (!result) | |
1900 | /* A call to a namespace-scope function. */ | |
d63d5d0c | 1901 | result = build_new_function_call (fn, args, koenig_p); |
16c35a1f | 1902 | } |
a723baf1 MM |
1903 | else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) |
1904 | { | |
a723baf1 MM |
1905 | if (args) |
1906 | error ("arguments to destructor are not allowed"); | |
1907 | /* Mark the pseudo-destructor call as having side-effects so | |
1908 | that we do not issue warnings about its use. */ | |
1909 | result = build1 (NOP_EXPR, | |
1910 | void_type_node, | |
1911 | TREE_OPERAND (fn, 0)); | |
1912 | TREE_SIDE_EFFECTS (result) = 1; | |
a723baf1 | 1913 | } |
4ba126e4 | 1914 | else if (CLASS_TYPE_P (TREE_TYPE (fn))) |
d17811fd MM |
1915 | /* If the "function" is really an object of class type, it might |
1916 | have an overloaded `operator ()'. */ | |
ec835fb2 MM |
1917 | result = build_new_op (CALL_EXPR, LOOKUP_NORMAL, fn, args, NULL_TREE, |
1918 | /*overloaded_p=*/NULL); | |
16c35a1f | 1919 | |
d17811fd MM |
1920 | if (!result) |
1921 | /* A call where the function is unknown. */ | |
1922 | result = build_function_call (fn, args); | |
4ba126e4 | 1923 | |
d17811fd | 1924 | if (processing_template_decl) |
6d80c4b9 | 1925 | { |
5039610b | 1926 | result = build_call_list (TREE_TYPE (result), orig_fn, orig_args); |
6d80c4b9 MM |
1927 | KOENIG_LOOKUP_P (result) = koenig_p; |
1928 | } | |
d17811fd | 1929 | return result; |
b4c4a9ec MM |
1930 | } |
1931 | ||
1932 | /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
1933 | is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
1934 | POSTDECREMENT_EXPR.) */ | |
1935 | ||
c8094d83 | 1936 | tree |
3a978d72 | 1937 | finish_increment_expr (tree expr, enum tree_code code) |
b4c4a9ec | 1938 | { |
c8094d83 | 1939 | return build_x_unary_op (code, expr); |
b4c4a9ec MM |
1940 | } |
1941 | ||
1942 | /* Finish a use of `this'. Returns an expression for `this'. */ | |
1943 | ||
c8094d83 | 1944 | tree |
3a978d72 | 1945 | finish_this_expr (void) |
b4c4a9ec MM |
1946 | { |
1947 | tree result; | |
1948 | ||
1949 | if (current_class_ptr) | |
1950 | { | |
b4c4a9ec MM |
1951 | result = current_class_ptr; |
1952 | } | |
1953 | else if (current_function_decl | |
1954 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
1955 | { | |
9e637a26 | 1956 | error ("%<this%> is unavailable for static member functions"); |
b4c4a9ec MM |
1957 | result = error_mark_node; |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | if (current_function_decl) | |
9e637a26 | 1962 | error ("invalid use of %<this%> in non-member function"); |
b4c4a9ec | 1963 | else |
9e637a26 | 1964 | error ("invalid use of %<this%> at top level"); |
b4c4a9ec MM |
1965 | result = error_mark_node; |
1966 | } | |
1967 | ||
1968 | return result; | |
1969 | } | |
1970 | ||
a723baf1 MM |
1971 | /* Finish a pseudo-destructor expression. If SCOPE is NULL, the |
1972 | expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
1973 | the TYPE for the type given. If SCOPE is non-NULL, the expression | |
1974 | was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
b4c4a9ec | 1975 | |
c8094d83 | 1976 | tree |
3a978d72 | 1977 | finish_pseudo_destructor_expr (tree object, tree scope, tree destructor) |
b4c4a9ec | 1978 | { |
a723baf1 MM |
1979 | if (destructor == error_mark_node) |
1980 | return error_mark_node; | |
40242ccf | 1981 | |
50bc768d | 1982 | gcc_assert (TYPE_P (destructor)); |
b4c4a9ec | 1983 | |
a723baf1 MM |
1984 | if (!processing_template_decl) |
1985 | { | |
1986 | if (scope == error_mark_node) | |
1987 | { | |
1988 | error ("invalid qualifying scope in pseudo-destructor name"); | |
1989 | return error_mark_node; | |
1990 | } | |
5cf10afb AP |
1991 | if (scope && TYPE_P (scope) && !check_dtor_name (scope, destructor)) |
1992 | { | |
1993 | error ("qualified type %qT does not match destructor name ~%qT", | |
1994 | scope, destructor); | |
1995 | return error_mark_node; | |
1996 | } | |
1997 | ||
c8094d83 | 1998 | |
26bcf8fc MM |
1999 | /* [expr.pseudo] says both: |
2000 | ||
0cbd7506 | 2001 | The type designated by the pseudo-destructor-name shall be |
26bcf8fc MM |
2002 | the same as the object type. |
2003 | ||
0cbd7506 | 2004 | and: |
26bcf8fc | 2005 | |
0cbd7506 | 2006 | The cv-unqualified versions of the object type and of the |
26bcf8fc MM |
2007 | type designated by the pseudo-destructor-name shall be the |
2008 | same type. | |
2009 | ||
0cbd7506 MS |
2010 | We implement the more generous second sentence, since that is |
2011 | what most other compilers do. */ | |
c8094d83 | 2012 | if (!same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (object), |
26bcf8fc | 2013 | destructor)) |
a723baf1 | 2014 | { |
a82e1a7d | 2015 | error ("%qE is not of type %qT", object, destructor); |
a723baf1 MM |
2016 | return error_mark_node; |
2017 | } | |
2018 | } | |
b4c4a9ec | 2019 | |
f293ce4b | 2020 | return build3 (PSEUDO_DTOR_EXPR, void_type_node, object, scope, destructor); |
b4c4a9ec MM |
2021 | } |
2022 | ||
ce4a0391 MM |
2023 | /* Finish an expression of the form CODE EXPR. */ |
2024 | ||
2025 | tree | |
3a978d72 | 2026 | finish_unary_op_expr (enum tree_code code, tree expr) |
ce4a0391 MM |
2027 | { |
2028 | tree result = build_x_unary_op (code, expr); | |
7c355bca ML |
2029 | /* Inside a template, build_x_unary_op does not fold the |
2030 | expression. So check whether the result is folded before | |
2031 | setting TREE_NEGATED_INT. */ | |
2032 | if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST | |
88b4335f | 2033 | && TREE_CODE (result) == INTEGER_CST |
8df83eae | 2034 | && !TYPE_UNSIGNED (TREE_TYPE (result)) |
88b4335f | 2035 | && INT_CST_LT (result, integer_zero_node)) |
6fc98adf MM |
2036 | { |
2037 | /* RESULT may be a cached INTEGER_CST, so we must copy it before | |
2038 | setting TREE_NEGATED_INT. */ | |
2039 | result = copy_node (result); | |
2040 | TREE_NEGATED_INT (result) = 1; | |
2041 | } | |
59c0753d MLI |
2042 | if (TREE_OVERFLOW_P (result) && !TREE_OVERFLOW_P (expr)) |
2043 | overflow_warning (result); | |
2044 | ||
ce4a0391 MM |
2045 | return result; |
2046 | } | |
2047 | ||
a723baf1 MM |
2048 | /* Finish a compound-literal expression. TYPE is the type to which |
2049 | the INITIALIZER_LIST is being cast. */ | |
2050 | ||
2051 | tree | |
4038c495 | 2052 | finish_compound_literal (tree type, VEC(constructor_elt,gc) *initializer_list) |
a723baf1 | 2053 | { |
e92fb501 | 2054 | tree var; |
a723baf1 MM |
2055 | tree compound_literal; |
2056 | ||
2b643eda MM |
2057 | if (!TYPE_OBJ_P (type)) |
2058 | { | |
2059 | error ("compound literal of non-object type %qT", type); | |
2060 | return error_mark_node; | |
2061 | } | |
2062 | ||
a723baf1 | 2063 | /* Build a CONSTRUCTOR for the INITIALIZER_LIST. */ |
dcf92453 | 2064 | compound_literal = build_constructor (NULL_TREE, initializer_list); |
a723baf1 | 2065 | if (processing_template_decl) |
a723baf1 | 2066 | { |
e92fb501 MM |
2067 | TREE_TYPE (compound_literal) = type; |
2068 | /* Mark the expression as a compound literal. */ | |
2069 | TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
2070 | return compound_literal; | |
a723baf1 MM |
2071 | } |
2072 | ||
e92fb501 MM |
2073 | /* Create a temporary variable to represent the compound literal. */ |
2074 | var = create_temporary_var (type); | |
2075 | if (!current_function_decl) | |
2076 | { | |
2077 | /* If this compound-literal appears outside of a function, then | |
2078 | the corresponding variable has static storage duration, just | |
3db45ab5 | 2079 | like the variable in whose initializer it appears. */ |
e92fb501 MM |
2080 | TREE_STATIC (var) = 1; |
2081 | /* The variable has internal linkage, since there is no need to | |
2082 | reference it from another translation unit. */ | |
2083 | TREE_PUBLIC (var) = 0; | |
2084 | /* It must have a name, so that the name mangler can mangle it. */ | |
2085 | DECL_NAME (var) = make_anon_name (); | |
2086 | } | |
2087 | /* We must call pushdecl, since the gimplifier complains if the | |
105d72c5 | 2088 | variable has not been declared via a BIND_EXPR. */ |
e92fb501 MM |
2089 | pushdecl (var); |
2090 | /* Initialize the variable as we would any other variable with a | |
2091 | brace-enclosed initializer. */ | |
3db45ab5 | 2092 | cp_finish_decl (var, compound_literal, |
e92fb501 MM |
2093 | /*init_const_expr_p=*/false, |
2094 | /*asmspec_tree=*/NULL_TREE, | |
2095 | LOOKUP_ONLYCONVERTING); | |
2096 | return var; | |
a723baf1 MM |
2097 | } |
2098 | ||
5f261ba9 MM |
2099 | /* Return the declaration for the function-name variable indicated by |
2100 | ID. */ | |
2101 | ||
2102 | tree | |
2103 | finish_fname (tree id) | |
2104 | { | |
2105 | tree decl; | |
c8094d83 | 2106 | |
5f261ba9 MM |
2107 | decl = fname_decl (C_RID_CODE (id), id); |
2108 | if (processing_template_decl) | |
10b1d5e7 | 2109 | decl = DECL_NAME (decl); |
5f261ba9 MM |
2110 | return decl; |
2111 | } | |
2112 | ||
8014a339 | 2113 | /* Finish a translation unit. */ |
ce4a0391 | 2114 | |
c8094d83 | 2115 | void |
3a978d72 | 2116 | finish_translation_unit (void) |
ce4a0391 MM |
2117 | { |
2118 | /* In case there were missing closebraces, | |
2119 | get us back to the global binding level. */ | |
273a708f | 2120 | pop_everything (); |
ce4a0391 MM |
2121 | while (current_namespace != global_namespace) |
2122 | pop_namespace (); | |
0ba8a114 | 2123 | |
c6002625 | 2124 | /* Do file scope __FUNCTION__ et al. */ |
0ba8a114 | 2125 | finish_fname_decls (); |
ce4a0391 MM |
2126 | } |
2127 | ||
b4c4a9ec MM |
2128 | /* Finish a template type parameter, specified as AGGR IDENTIFIER. |
2129 | Returns the parameter. */ | |
2130 | ||
c8094d83 | 2131 | tree |
3a978d72 | 2132 | finish_template_type_parm (tree aggr, tree identifier) |
b4c4a9ec | 2133 | { |
6eabb241 | 2134 | if (aggr != class_type_node) |
b4c4a9ec | 2135 | { |
9e637a26 | 2136 | pedwarn ("template type parameters must use the keyword %<class%> or %<typename%>"); |
b4c4a9ec MM |
2137 | aggr = class_type_node; |
2138 | } | |
2139 | ||
2140 | return build_tree_list (aggr, identifier); | |
2141 | } | |
2142 | ||
2143 | /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
2144 | Returns the parameter. */ | |
2145 | ||
c8094d83 | 2146 | tree |
3a978d72 | 2147 | finish_template_template_parm (tree aggr, tree identifier) |
b4c4a9ec MM |
2148 | { |
2149 | tree decl = build_decl (TYPE_DECL, identifier, NULL_TREE); | |
2150 | tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); | |
2151 | DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
2152 | DECL_TEMPLATE_RESULT (tmpl) = decl; | |
c727aa5e | 2153 | DECL_ARTIFICIAL (decl) = 1; |
b4c4a9ec MM |
2154 | end_template_decl (); |
2155 | ||
50bc768d | 2156 | gcc_assert (DECL_TEMPLATE_PARMS (tmpl)); |
b37bf5bd | 2157 | |
b4c4a9ec MM |
2158 | return finish_template_type_parm (aggr, tmpl); |
2159 | } | |
ce4a0391 | 2160 | |
8ba658ee MM |
2161 | /* ARGUMENT is the default-argument value for a template template |
2162 | parameter. If ARGUMENT is invalid, issue error messages and return | |
2163 | the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
2164 | ||
2165 | tree | |
2166 | check_template_template_default_arg (tree argument) | |
2167 | { | |
2168 | if (TREE_CODE (argument) != TEMPLATE_DECL | |
2169 | && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
8ba658ee MM |
2170 | && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) |
2171 | { | |
a3a503a5 | 2172 | if (TREE_CODE (argument) == TYPE_DECL) |
e488a090 VR |
2173 | error ("invalid use of type %qT as a default value for a template " |
2174 | "template-parameter", TREE_TYPE (argument)); | |
a3a503a5 GB |
2175 | else |
2176 | error ("invalid default argument for a template template parameter"); | |
8ba658ee MM |
2177 | return error_mark_node; |
2178 | } | |
2179 | ||
2180 | return argument; | |
2181 | } | |
2182 | ||
ce4a0391 MM |
2183 | /* Begin a class definition, as indicated by T. */ |
2184 | ||
2185 | tree | |
b9e75696 | 2186 | begin_class_definition (tree t, tree attributes) |
ce4a0391 | 2187 | { |
7437519c ZW |
2188 | if (t == error_mark_node) |
2189 | return error_mark_node; | |
2190 | ||
522d6614 NS |
2191 | if (processing_template_parmlist) |
2192 | { | |
a82e1a7d | 2193 | error ("definition of %q#T inside template parameter list", t); |
522d6614 NS |
2194 | return error_mark_node; |
2195 | } | |
47ee8904 MM |
2196 | /* A non-implicit typename comes from code like: |
2197 | ||
2198 | template <typename T> struct A { | |
0cbd7506 | 2199 | template <typename U> struct A<T>::B ... |
47ee8904 MM |
2200 | |
2201 | This is erroneous. */ | |
2202 | else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2203 | { | |
a82e1a7d | 2204 | error ("invalid definition of qualified type %qT", t); |
47ee8904 MM |
2205 | t = error_mark_node; |
2206 | } | |
2207 | ||
2208 | if (t == error_mark_node || ! IS_AGGR_TYPE (t)) | |
ce4a0391 | 2209 | { |
33848bb0 | 2210 | t = make_aggr_type (RECORD_TYPE); |
bd3d082e | 2211 | pushtag (make_anon_name (), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2212 | } |
830fcda8 | 2213 | |
b4f70b3d | 2214 | /* Update the location of the decl. */ |
f31686a3 | 2215 | DECL_SOURCE_LOCATION (TYPE_NAME (t)) = input_location; |
c8094d83 | 2216 | |
4c571114 | 2217 | if (TYPE_BEING_DEFINED (t)) |
ce4a0391 | 2218 | { |
33848bb0 | 2219 | t = make_aggr_type (TREE_CODE (t)); |
bd3d082e | 2220 | pushtag (TYPE_IDENTIFIER (t), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2221 | } |
ff350acd | 2222 | maybe_process_partial_specialization (t); |
29370796 | 2223 | pushclass (t); |
ce4a0391 | 2224 | TYPE_BEING_DEFINED (t) = 1; |
b9e75696 JM |
2225 | |
2226 | cplus_decl_attributes (&t, attributes, (int) ATTR_FLAG_TYPE_IN_PLACE); | |
2227 | ||
c0694c4b MM |
2228 | if (flag_pack_struct) |
2229 | { | |
2230 | tree v; | |
2231 | TYPE_PACKED (t) = 1; | |
2232 | /* Even though the type is being defined for the first time | |
2233 | here, there might have been a forward declaration, so there | |
2234 | might be cv-qualified variants of T. */ | |
2235 | for (v = TYPE_NEXT_VARIANT (t); v; v = TYPE_NEXT_VARIANT (v)) | |
2236 | TYPE_PACKED (v) = 1; | |
2237 | } | |
ce4a0391 MM |
2238 | /* Reset the interface data, at the earliest possible |
2239 | moment, as it might have been set via a class foo; | |
2240 | before. */ | |
1951a1b6 JM |
2241 | if (! TYPE_ANONYMOUS_P (t)) |
2242 | { | |
c533e34d | 2243 | struct c_fileinfo *finfo = get_fileinfo (input_filename); |
5d709b00 | 2244 | CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only; |
1951a1b6 | 2245 | SET_CLASSTYPE_INTERFACE_UNKNOWN_X |
5d709b00 | 2246 | (t, finfo->interface_unknown); |
1951a1b6 | 2247 | } |
ce4a0391 | 2248 | reset_specialization(); |
c8094d83 | 2249 | |
b7975aed MM |
2250 | /* Make a declaration for this class in its own scope. */ |
2251 | build_self_reference (); | |
2252 | ||
830fcda8 | 2253 | return t; |
ce4a0391 MM |
2254 | } |
2255 | ||
61a127b3 MM |
2256 | /* Finish the member declaration given by DECL. */ |
2257 | ||
2258 | void | |
3a978d72 | 2259 | finish_member_declaration (tree decl) |
61a127b3 MM |
2260 | { |
2261 | if (decl == error_mark_node || decl == NULL_TREE) | |
2262 | return; | |
2263 | ||
2264 | if (decl == void_type_node) | |
2265 | /* The COMPONENT was a friend, not a member, and so there's | |
2266 | nothing for us to do. */ | |
2267 | return; | |
2268 | ||
2269 | /* We should see only one DECL at a time. */ | |
50bc768d | 2270 | gcc_assert (TREE_CHAIN (decl) == NULL_TREE); |
61a127b3 MM |
2271 | |
2272 | /* Set up access control for DECL. */ | |
c8094d83 | 2273 | TREE_PRIVATE (decl) |
61a127b3 | 2274 | = (current_access_specifier == access_private_node); |
c8094d83 | 2275 | TREE_PROTECTED (decl) |
61a127b3 MM |
2276 | = (current_access_specifier == access_protected_node); |
2277 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
2278 | { | |
17aec3eb RK |
2279 | TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); |
2280 | TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
61a127b3 MM |
2281 | } |
2282 | ||
2283 | /* Mark the DECL as a member of the current class. */ | |
4f1c5b7d | 2284 | DECL_CONTEXT (decl) = current_class_type; |
61a127b3 | 2285 | |
b1d7b1c0 DG |
2286 | /* Check for bare parameter packs in the member variable declaration. */ |
2287 | if (TREE_CODE (decl) == FIELD_DECL | |
2288 | && !check_for_bare_parameter_packs (TREE_TYPE (decl))) | |
eb89f88c | 2289 | TREE_TYPE (decl) = error_mark_node; |
b1d7b1c0 | 2290 | |
421844e7 MM |
2291 | /* [dcl.link] |
2292 | ||
2293 | A C language linkage is ignored for the names of class members | |
2294 | and the member function type of class member functions. */ | |
2295 | if (DECL_LANG_SPECIFIC (decl) && DECL_LANGUAGE (decl) == lang_c) | |
5d2ed28c | 2296 | SET_DECL_LANGUAGE (decl, lang_cplusplus); |
421844e7 | 2297 | |
61a127b3 MM |
2298 | /* Put functions on the TYPE_METHODS list and everything else on the |
2299 | TYPE_FIELDS list. Note that these are built up in reverse order. | |
2300 | We reverse them (to obtain declaration order) in finish_struct. */ | |
c8094d83 | 2301 | if (TREE_CODE (decl) == FUNCTION_DECL |
61a127b3 MM |
2302 | || DECL_FUNCTION_TEMPLATE_P (decl)) |
2303 | { | |
2304 | /* We also need to add this function to the | |
2305 | CLASSTYPE_METHOD_VEC. */ | |
b77fe7b4 NS |
2306 | if (add_method (current_class_type, decl, NULL_TREE)) |
2307 | { | |
2308 | TREE_CHAIN (decl) = TYPE_METHODS (current_class_type); | |
2309 | TYPE_METHODS (current_class_type) = decl; | |
f139561c | 2310 | |
b77fe7b4 NS |
2311 | maybe_add_class_template_decl_list (current_class_type, decl, |
2312 | /*friend_p=*/0); | |
2313 | } | |
61a127b3 | 2314 | } |
f139561c | 2315 | /* Enter the DECL into the scope of the class. */ |
98ed9dae | 2316 | else if ((TREE_CODE (decl) == USING_DECL && !DECL_DEPENDENT_P (decl)) |
399dedb9 | 2317 | || pushdecl_class_level (decl)) |
61a127b3 MM |
2318 | { |
2319 | /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
2320 | go at the beginning. The reason is that lookup_field_1 | |
2321 | searches the list in order, and we want a field name to | |
2322 | override a type name so that the "struct stat hack" will | |
2323 | work. In particular: | |
2324 | ||
2325 | struct S { enum E { }; int E } s; | |
2326 | s.E = 3; | |
2327 | ||
0e339752 | 2328 | is valid. In addition, the FIELD_DECLs must be maintained in |
61a127b3 MM |
2329 | declaration order so that class layout works as expected. |
2330 | However, we don't need that order until class layout, so we | |
2331 | save a little time by putting FIELD_DECLs on in reverse order | |
2332 | here, and then reversing them in finish_struct_1. (We could | |
2333 | also keep a pointer to the correct insertion points in the | |
2334 | list.) */ | |
2335 | ||
2336 | if (TREE_CODE (decl) == TYPE_DECL) | |
c8094d83 | 2337 | TYPE_FIELDS (current_class_type) |
61a127b3 MM |
2338 | = chainon (TYPE_FIELDS (current_class_type), decl); |
2339 | else | |
2340 | { | |
2341 | TREE_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
2342 | TYPE_FIELDS (current_class_type) = decl; | |
2343 | } | |
8f032717 | 2344 | |
c8094d83 | 2345 | maybe_add_class_template_decl_list (current_class_type, decl, |
f139561c | 2346 | /*friend_p=*/0); |
61a127b3 | 2347 | } |
5e2f4cd2 MM |
2348 | |
2349 | if (pch_file) | |
2350 | note_decl_for_pch (decl); | |
2351 | } | |
2352 | ||
2353 | /* DECL has been declared while we are building a PCH file. Perform | |
2354 | actions that we might normally undertake lazily, but which can be | |
2355 | performed now so that they do not have to be performed in | |
2356 | translation units which include the PCH file. */ | |
2357 | ||
2358 | void | |
2359 | note_decl_for_pch (tree decl) | |
2360 | { | |
2361 | gcc_assert (pch_file); | |
2362 | ||
5e2f4cd2 MM |
2363 | /* There's a good chance that we'll have to mangle names at some |
2364 | point, even if only for emission in debugging information. */ | |
ec0897de JM |
2365 | if ((TREE_CODE (decl) == VAR_DECL |
2366 | || TREE_CODE (decl) == FUNCTION_DECL) | |
2367 | && !processing_template_decl) | |
5e2f4cd2 | 2368 | mangle_decl (decl); |
61a127b3 MM |
2369 | } |
2370 | ||
306ef644 | 2371 | /* Finish processing a complete template declaration. The PARMS are |
36a117a5 MM |
2372 | the template parameters. */ |
2373 | ||
2374 | void | |
3a978d72 | 2375 | finish_template_decl (tree parms) |
36a117a5 MM |
2376 | { |
2377 | if (parms) | |
2378 | end_template_decl (); | |
2379 | else | |
2380 | end_specialization (); | |
2381 | } | |
2382 | ||
509fc277 | 2383 | /* Finish processing a template-id (which names a type) of the form |
36a117a5 | 2384 | NAME < ARGS >. Return the TYPE_DECL for the type named by the |
838dfd8a | 2385 | template-id. If ENTERING_SCOPE is nonzero we are about to enter |
36a117a5 MM |
2386 | the scope of template-id indicated. */ |
2387 | ||
2388 | tree | |
3a978d72 | 2389 | finish_template_type (tree name, tree args, int entering_scope) |
36a117a5 MM |
2390 | { |
2391 | tree decl; | |
2392 | ||
2393 | decl = lookup_template_class (name, args, | |
42eaed49 | 2394 | NULL_TREE, NULL_TREE, entering_scope, |
23fca1f5 | 2395 | tf_warning_or_error | tf_user); |
36a117a5 MM |
2396 | if (decl != error_mark_node) |
2397 | decl = TYPE_STUB_DECL (decl); | |
2398 | ||
2399 | return decl; | |
2400 | } | |
648f19f6 | 2401 | |
ea6021e8 MM |
2402 | /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. |
2403 | Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
2404 | BASE_CLASS, or NULL_TREE if an error occurred. The | |
aba649ba | 2405 | ACCESS_SPECIFIER is one of |
809e3e7f NS |
2406 | access_{default,public,protected_private}_node. For a virtual base |
2407 | we set TREE_TYPE. */ | |
ea6021e8 | 2408 | |
c8094d83 | 2409 | tree |
dbbf88d1 | 2410 | finish_base_specifier (tree base, tree access, bool virtual_p) |
ea6021e8 | 2411 | { |
ea6021e8 MM |
2412 | tree result; |
2413 | ||
dbbf88d1 | 2414 | if (base == error_mark_node) |
acb044ee GDR |
2415 | { |
2416 | error ("invalid base-class specification"); | |
2417 | result = NULL_TREE; | |
2418 | } | |
dbbf88d1 | 2419 | else if (! is_aggr_type (base, 1)) |
ea6021e8 | 2420 | result = NULL_TREE; |
ea6021e8 | 2421 | else |
bb92901d | 2422 | { |
dbbf88d1 | 2423 | if (cp_type_quals (base) != 0) |
0cbd7506 MS |
2424 | { |
2425 | error ("base class %qT has cv qualifiers", base); | |
2426 | base = TYPE_MAIN_VARIANT (base); | |
2427 | } | |
dbbf88d1 | 2428 | result = build_tree_list (access, base); |
809e3e7f NS |
2429 | if (virtual_p) |
2430 | TREE_TYPE (result) = integer_type_node; | |
bb92901d | 2431 | } |
ea6021e8 MM |
2432 | |
2433 | return result; | |
2434 | } | |
61a127b3 | 2435 | |
8f78f01f MM |
2436 | /* Issue a diagnostic that NAME cannot be found in SCOPE. DECL is |
2437 | what we found when we tried to do the lookup. */ | |
22038b2c NS |
2438 | |
2439 | void | |
8f78f01f | 2440 | qualified_name_lookup_error (tree scope, tree name, tree decl) |
22038b2c | 2441 | { |
1e1b4b37 VR |
2442 | if (scope == error_mark_node) |
2443 | ; /* We already complained. */ | |
2444 | else if (TYPE_P (scope)) | |
22038b2c NS |
2445 | { |
2446 | if (!COMPLETE_TYPE_P (scope)) | |
a82e1a7d | 2447 | error ("incomplete type %qT used in nested name specifier", scope); |
8f78f01f MM |
2448 | else if (TREE_CODE (decl) == TREE_LIST) |
2449 | { | |
a82e1a7d | 2450 | error ("reference to %<%T::%D%> is ambiguous", scope, name); |
8f78f01f MM |
2451 | print_candidates (decl); |
2452 | } | |
22038b2c | 2453 | else |
a82e1a7d | 2454 | error ("%qD is not a member of %qT", name, scope); |
22038b2c NS |
2455 | } |
2456 | else if (scope != global_namespace) | |
a82e1a7d | 2457 | error ("%qD is not a member of %qD", name, scope); |
22038b2c | 2458 | else |
a82e1a7d | 2459 | error ("%<::%D%> has not been declared", name); |
22038b2c | 2460 | } |
c8094d83 | 2461 | |
eff3a276 MM |
2462 | /* If FNS is a member function, a set of member functions, or a |
2463 | template-id referring to one or more member functions, return a | |
2464 | BASELINK for FNS, incorporating the current access context. | |
2465 | Otherwise, return FNS unchanged. */ | |
2466 | ||
2467 | tree | |
2468 | baselink_for_fns (tree fns) | |
2469 | { | |
2470 | tree fn; | |
2471 | tree cl; | |
2472 | ||
2473 | if (BASELINK_P (fns) | |
eff3a276 MM |
2474 | || error_operand_p (fns)) |
2475 | return fns; | |
2476 | ||
2477 | fn = fns; | |
2478 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
2479 | fn = TREE_OPERAND (fn, 0); | |
2480 | fn = get_first_fn (fn); | |
2481 | if (!DECL_FUNCTION_MEMBER_P (fn)) | |
2482 | return fns; | |
2483 | ||
2484 | cl = currently_open_derived_class (DECL_CONTEXT (fn)); | |
2485 | if (!cl) | |
2486 | cl = DECL_CONTEXT (fn); | |
2487 | cl = TYPE_BINFO (cl); | |
2488 | return build_baselink (cl, cl, fns, /*optype=*/NULL_TREE); | |
2489 | } | |
2490 | ||
b3445994 MM |
2491 | /* ID_EXPRESSION is a representation of parsed, but unprocessed, |
2492 | id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
2493 | if non-NULL, is the type or namespace used to explicitly qualify | |
2494 | ID_EXPRESSION. DECL is the entity to which that name has been | |
c8094d83 | 2495 | resolved. |
b3445994 MM |
2496 | |
2497 | *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
2498 | constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
2499 | be set to true if this expression isn't permitted in a | |
2500 | constant-expression, but it is otherwise not set by this function. | |
2501 | *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
2502 | constant-expression, but a non-constant expression is also | |
2503 | permissible. | |
2504 | ||
02ed62dd MM |
2505 | DONE is true if this expression is a complete postfix-expression; |
2506 | it is false if this expression is followed by '->', '[', '(', etc. | |
2507 | ADDRESS_P is true iff this expression is the operand of '&'. | |
2508 | TEMPLATE_P is true iff the qualified-id was of the form | |
2509 | "A::template B". TEMPLATE_ARG_P is true iff this qualified name | |
2510 | appears as a template argument. | |
2511 | ||
b3445994 MM |
2512 | If an error occurs, and it is the kind of error that might cause |
2513 | the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
2514 | is the caller's responsibility to issue the message. *ERROR_MSG | |
2515 | will be a string with static storage duration, so the caller need | |
2516 | not "free" it. | |
2517 | ||
2518 | Return an expression for the entity, after issuing appropriate | |
2519 | diagnostics. This function is also responsible for transforming a | |
2520 | reference to a non-static member into a COMPONENT_REF that makes | |
c8094d83 | 2521 | the use of "this" explicit. |
b3445994 MM |
2522 | |
2523 | Upon return, *IDK will be filled in appropriately. */ | |
2524 | ||
2525 | tree | |
c8094d83 | 2526 | finish_id_expression (tree id_expression, |
b3445994 MM |
2527 | tree decl, |
2528 | tree scope, | |
2529 | cp_id_kind *idk, | |
67c03833 JM |
2530 | bool integral_constant_expression_p, |
2531 | bool allow_non_integral_constant_expression_p, | |
2532 | bool *non_integral_constant_expression_p, | |
02ed62dd MM |
2533 | bool template_p, |
2534 | bool done, | |
2535 | bool address_p, | |
2536 | bool template_arg_p, | |
b3445994 MM |
2537 | const char **error_msg) |
2538 | { | |
2539 | /* Initialize the output parameters. */ | |
2540 | *idk = CP_ID_KIND_NONE; | |
2541 | *error_msg = NULL; | |
2542 | ||
2543 | if (id_expression == error_mark_node) | |
2544 | return error_mark_node; | |
2545 | /* If we have a template-id, then no further lookup is | |
2546 | required. If the template-id was for a template-class, we | |
2547 | will sometimes have a TYPE_DECL at this point. */ | |
2548 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
ee935db4 | 2549 | || TREE_CODE (decl) == TYPE_DECL) |
b3445994 MM |
2550 | ; |
2551 | /* Look up the name. */ | |
c8094d83 | 2552 | else |
b3445994 MM |
2553 | { |
2554 | if (decl == error_mark_node) | |
2555 | { | |
2556 | /* Name lookup failed. */ | |
c8094d83 MS |
2557 | if (scope |
2558 | && (!TYPE_P (scope) | |
4546865e MM |
2559 | || (!dependent_type_p (scope) |
2560 | && !(TREE_CODE (id_expression) == IDENTIFIER_NODE | |
2561 | && IDENTIFIER_TYPENAME_P (id_expression) | |
2562 | && dependent_type_p (TREE_TYPE (id_expression)))))) | |
b3445994 | 2563 | { |
4546865e MM |
2564 | /* If the qualifying type is non-dependent (and the name |
2565 | does not name a conversion operator to a dependent | |
2566 | type), issue an error. */ | |
8f78f01f | 2567 | qualified_name_lookup_error (scope, id_expression, decl); |
b3445994 MM |
2568 | return error_mark_node; |
2569 | } | |
2570 | else if (!scope) | |
2571 | { | |
2572 | /* It may be resolved via Koenig lookup. */ | |
2573 | *idk = CP_ID_KIND_UNQUALIFIED; | |
2574 | return id_expression; | |
2575 | } | |
4546865e MM |
2576 | else |
2577 | decl = id_expression; | |
b3445994 MM |
2578 | } |
2579 | /* If DECL is a variable that would be out of scope under | |
2580 | ANSI/ISO rules, but in scope in the ARM, name lookup | |
2581 | will succeed. Issue a diagnostic here. */ | |
2582 | else | |
2583 | decl = check_for_out_of_scope_variable (decl); | |
2584 | ||
2585 | /* Remember that the name was used in the definition of | |
2586 | the current class so that we can check later to see if | |
2587 | the meaning would have been different after the class | |
2588 | was entirely defined. */ | |
2589 | if (!scope && decl != error_mark_node) | |
2590 | maybe_note_name_used_in_class (id_expression, decl); | |
8ca4bf25 MM |
2591 | |
2592 | /* Disallow uses of local variables from containing functions. */ | |
2593 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) | |
2594 | { | |
2595 | tree context = decl_function_context (decl); | |
2596 | if (context != NULL_TREE && context != current_function_decl | |
2597 | && ! TREE_STATIC (decl)) | |
2598 | { | |
2599 | error (TREE_CODE (decl) == VAR_DECL | |
2600 | ? "use of %<auto%> variable from containing function" | |
2601 | : "use of parameter from containing function"); | |
2602 | error (" %q+#D declared here", decl); | |
2603 | return error_mark_node; | |
2604 | } | |
2605 | } | |
b3445994 MM |
2606 | } |
2607 | ||
2608 | /* If we didn't find anything, or what we found was a type, | |
2609 | then this wasn't really an id-expression. */ | |
2610 | if (TREE_CODE (decl) == TEMPLATE_DECL | |
2611 | && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
2612 | { | |
2613 | *error_msg = "missing template arguments"; | |
2614 | return error_mark_node; | |
2615 | } | |
2616 | else if (TREE_CODE (decl) == TYPE_DECL | |
2617 | || TREE_CODE (decl) == NAMESPACE_DECL) | |
2618 | { | |
2619 | *error_msg = "expected primary-expression"; | |
2620 | return error_mark_node; | |
2621 | } | |
2622 | ||
2623 | /* If the name resolved to a template parameter, there is no | |
931a9c05 GB |
2624 | need to look it up again later. */ |
2625 | if ((TREE_CODE (decl) == CONST_DECL && DECL_TEMPLATE_PARM_P (decl)) | |
2626 | || TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
b3445994 | 2627 | { |
db24eb1f | 2628 | tree r; |
c8094d83 | 2629 | |
b3445994 | 2630 | *idk = CP_ID_KIND_NONE; |
931a9c05 GB |
2631 | if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX) |
2632 | decl = TEMPLATE_PARM_DECL (decl); | |
db24eb1f | 2633 | r = convert_from_reference (DECL_INITIAL (decl)); |
c8094d83 MS |
2634 | |
2635 | if (integral_constant_expression_p | |
68deab91 | 2636 | && !dependent_type_p (TREE_TYPE (decl)) |
db24eb1f | 2637 | && !(INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (r)))) |
931a9c05 | 2638 | { |
67c03833 | 2639 | if (!allow_non_integral_constant_expression_p) |
a82e1a7d | 2640 | error ("template parameter %qD of type %qT is not allowed in " |
931a9c05 GB |
2641 | "an integral constant expression because it is not of " |
2642 | "integral or enumeration type", decl, TREE_TYPE (decl)); | |
67c03833 | 2643 | *non_integral_constant_expression_p = true; |
931a9c05 | 2644 | } |
db24eb1f | 2645 | return r; |
931a9c05 | 2646 | } |
c8094d83 | 2647 | /* Similarly, we resolve enumeration constants to their |
931a9c05 GB |
2648 | underlying values. */ |
2649 | else if (TREE_CODE (decl) == CONST_DECL) | |
2650 | { | |
2651 | *idk = CP_ID_KIND_NONE; | |
2652 | if (!processing_template_decl) | |
6193b8b7 DJ |
2653 | { |
2654 | used_types_insert (TREE_TYPE (decl)); | |
2655 | return DECL_INITIAL (decl); | |
2656 | } | |
b3445994 MM |
2657 | return decl; |
2658 | } | |
2659 | else | |
2660 | { | |
2661 | bool dependent_p; | |
2662 | ||
2663 | /* If the declaration was explicitly qualified indicate | |
2664 | that. The semantics of `A::f(3)' are different than | |
2665 | `f(3)' if `f' is virtual. */ | |
c8094d83 | 2666 | *idk = (scope |
b3445994 MM |
2667 | ? CP_ID_KIND_QUALIFIED |
2668 | : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2669 | ? CP_ID_KIND_TEMPLATE_ID | |
2670 | : CP_ID_KIND_UNQUALIFIED)); | |
2671 | ||
2672 | ||
2673 | /* [temp.dep.expr] | |
2674 | ||
2675 | An id-expression is type-dependent if it contains an | |
2676 | identifier that was declared with a dependent type. | |
2677 | ||
b3445994 MM |
2678 | The standard is not very specific about an id-expression that |
2679 | names a set of overloaded functions. What if some of them | |
2680 | have dependent types and some of them do not? Presumably, | |
2681 | such a name should be treated as a dependent name. */ | |
2682 | /* Assume the name is not dependent. */ | |
2683 | dependent_p = false; | |
2684 | if (!processing_template_decl) | |
2685 | /* No names are dependent outside a template. */ | |
2686 | ; | |
2687 | /* A template-id where the name of the template was not resolved | |
2688 | is definitely dependent. */ | |
2689 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
c8094d83 | 2690 | && (TREE_CODE (TREE_OPERAND (decl, 0)) |
b3445994 MM |
2691 | == IDENTIFIER_NODE)) |
2692 | dependent_p = true; | |
2693 | /* For anything except an overloaded function, just check its | |
2694 | type. */ | |
2695 | else if (!is_overloaded_fn (decl)) | |
c8094d83 | 2696 | dependent_p |
b3445994 MM |
2697 | = dependent_type_p (TREE_TYPE (decl)); |
2698 | /* For a set of overloaded functions, check each of the | |
2699 | functions. */ | |
2700 | else | |
2701 | { | |
2702 | tree fns = decl; | |
2703 | ||
2704 | if (BASELINK_P (fns)) | |
2705 | fns = BASELINK_FUNCTIONS (fns); | |
2706 | ||
2707 | /* For a template-id, check to see if the template | |
2708 | arguments are dependent. */ | |
2709 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
2710 | { | |
2711 | tree args = TREE_OPERAND (fns, 1); | |
2712 | dependent_p = any_dependent_template_arguments_p (args); | |
2713 | /* The functions are those referred to by the | |
2714 | template-id. */ | |
2715 | fns = TREE_OPERAND (fns, 0); | |
2716 | } | |
2717 | ||
2718 | /* If there are no dependent template arguments, go through | |
cd0be382 | 2719 | the overloaded functions. */ |
b3445994 MM |
2720 | while (fns && !dependent_p) |
2721 | { | |
2722 | tree fn = OVL_CURRENT (fns); | |
2723 | ||
2724 | /* Member functions of dependent classes are | |
2725 | dependent. */ | |
2726 | if (TREE_CODE (fn) == FUNCTION_DECL | |
2727 | && type_dependent_expression_p (fn)) | |
2728 | dependent_p = true; | |
2729 | else if (TREE_CODE (fn) == TEMPLATE_DECL | |
2730 | && dependent_template_p (fn)) | |
2731 | dependent_p = true; | |
2732 | ||
2733 | fns = OVL_NEXT (fns); | |
2734 | } | |
2735 | } | |
2736 | ||
2737 | /* If the name was dependent on a template parameter, we will | |
2738 | resolve the name at instantiation time. */ | |
2739 | if (dependent_p) | |
2740 | { | |
2741 | /* Create a SCOPE_REF for qualified names, if the scope is | |
2742 | dependent. */ | |
2743 | if (scope) | |
2744 | { | |
b3445994 MM |
2745 | /* Since this name was dependent, the expression isn't |
2746 | constant -- yet. No error is issued because it might | |
2747 | be constant when things are instantiated. */ | |
67c03833 JM |
2748 | if (integral_constant_expression_p) |
2749 | *non_integral_constant_expression_p = true; | |
02ed62dd MM |
2750 | if (TYPE_P (scope)) |
2751 | { | |
2752 | if (address_p && done) | |
2753 | decl = finish_qualified_id_expr (scope, decl, | |
2754 | done, address_p, | |
2755 | template_p, | |
2756 | template_arg_p); | |
2757 | else if (dependent_type_p (scope)) | |
2758 | decl = build_qualified_name (/*type=*/NULL_TREE, | |
2759 | scope, | |
2760 | id_expression, | |
2761 | template_p); | |
2762 | else if (DECL_P (decl)) | |
2763 | decl = build_qualified_name (TREE_TYPE (decl), | |
2764 | scope, | |
2765 | id_expression, | |
2766 | template_p); | |
2767 | } | |
2768 | if (TREE_TYPE (decl)) | |
2769 | decl = convert_from_reference (decl); | |
2770 | return decl; | |
b3445994 MM |
2771 | } |
2772 | /* A TEMPLATE_ID already contains all the information we | |
2773 | need. */ | |
2774 | if (TREE_CODE (id_expression) == TEMPLATE_ID_EXPR) | |
2775 | return id_expression; | |
10b1d5e7 | 2776 | *idk = CP_ID_KIND_UNQUALIFIED_DEPENDENT; |
5a98fa7b MM |
2777 | /* If we found a variable, then name lookup during the |
2778 | instantiation will always resolve to the same VAR_DECL | |
2779 | (or an instantiation thereof). */ | |
3c398f34 MM |
2780 | if (TREE_CODE (decl) == VAR_DECL |
2781 | || TREE_CODE (decl) == PARM_DECL) | |
db24eb1f | 2782 | return convert_from_reference (decl); |
bad1f462 KL |
2783 | /* The same is true for FIELD_DECL, but we also need to |
2784 | make sure that the syntax is correct. */ | |
2785 | else if (TREE_CODE (decl) == FIELD_DECL) | |
a26ddf11 KL |
2786 | { |
2787 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2788 | Access checking has been performed during name lookup | |
2789 | already. Turn off checking to avoid duplicate errors. */ | |
2790 | push_deferring_access_checks (dk_no_check); | |
2791 | decl = finish_non_static_data_member | |
2792 | (decl, current_class_ref, | |
2793 | /*qualifying_scope=*/NULL_TREE); | |
2794 | pop_deferring_access_checks (); | |
2795 | return decl; | |
2796 | } | |
10b1d5e7 | 2797 | return id_expression; |
b3445994 MM |
2798 | } |
2799 | ||
2800 | /* Only certain kinds of names are allowed in constant | |
0cbd7506 MS |
2801 | expression. Enumerators and template parameters have already |
2802 | been handled above. */ | |
c30b4add | 2803 | if (integral_constant_expression_p |
100d337a MA |
2804 | && ! DECL_INTEGRAL_CONSTANT_VAR_P (decl) |
2805 | && ! builtin_valid_in_constant_expr_p (decl)) | |
b3445994 | 2806 | { |
c30b4add | 2807 | if (!allow_non_integral_constant_expression_p) |
b3445994 | 2808 | { |
a82e1a7d | 2809 | error ("%qD cannot appear in a constant-expression", decl); |
c30b4add | 2810 | return error_mark_node; |
b3445994 | 2811 | } |
c30b4add | 2812 | *non_integral_constant_expression_p = true; |
b3445994 | 2813 | } |
c8094d83 | 2814 | |
415d4636 | 2815 | if (TREE_CODE (decl) == NAMESPACE_DECL) |
9e95d15f | 2816 | { |
a82e1a7d | 2817 | error ("use of namespace %qD as expression", decl); |
9e95d15f NS |
2818 | return error_mark_node; |
2819 | } | |
2820 | else if (DECL_CLASS_TEMPLATE_P (decl)) | |
2821 | { | |
a82e1a7d | 2822 | error ("use of class template %qT as expression", decl); |
9e95d15f NS |
2823 | return error_mark_node; |
2824 | } | |
2825 | else if (TREE_CODE (decl) == TREE_LIST) | |
2826 | { | |
2827 | /* Ambiguous reference to base members. */ | |
a82e1a7d | 2828 | error ("request for member %qD is ambiguous in " |
9e95d15f NS |
2829 | "multiple inheritance lattice", id_expression); |
2830 | print_candidates (decl); | |
2831 | return error_mark_node; | |
2832 | } | |
415d4636 MM |
2833 | |
2834 | /* Mark variable-like entities as used. Functions are similarly | |
2835 | marked either below or after overload resolution. */ | |
2836 | if (TREE_CODE (decl) == VAR_DECL | |
2837 | || TREE_CODE (decl) == PARM_DECL | |
2838 | || TREE_CODE (decl) == RESULT_DECL) | |
2839 | mark_used (decl); | |
2840 | ||
2841 | if (scope) | |
2842 | { | |
c8094d83 | 2843 | decl = (adjust_result_of_qualified_name_lookup |
415d4636 | 2844 | (decl, scope, current_class_type)); |
e20bcc5e JH |
2845 | |
2846 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
2847 | mark_used (decl); | |
2848 | ||
415d4636 | 2849 | if (TREE_CODE (decl) == FIELD_DECL || BASELINK_P (decl)) |
02ed62dd MM |
2850 | decl = finish_qualified_id_expr (scope, |
2851 | decl, | |
2852 | done, | |
2853 | address_p, | |
2854 | template_p, | |
2855 | template_arg_p); | |
db24eb1f NS |
2856 | else |
2857 | { | |
2858 | tree r = convert_from_reference (decl); | |
c8094d83 | 2859 | |
02ed62dd MM |
2860 | if (processing_template_decl && TYPE_P (scope)) |
2861 | r = build_qualified_name (TREE_TYPE (r), | |
2862 | scope, decl, | |
2863 | template_p); | |
db24eb1f NS |
2864 | decl = r; |
2865 | } | |
415d4636 | 2866 | } |
9e95d15f | 2867 | else if (TREE_CODE (decl) == FIELD_DECL) |
a26ddf11 KL |
2868 | { |
2869 | /* Since SCOPE is NULL here, this is an unqualified name. | |
2870 | Access checking has been performed during name lookup | |
2871 | already. Turn off checking to avoid duplicate errors. */ | |
2872 | push_deferring_access_checks (dk_no_check); | |
2873 | decl = finish_non_static_data_member (decl, current_class_ref, | |
2874 | /*qualifying_scope=*/NULL_TREE); | |
2875 | pop_deferring_access_checks (); | |
2876 | } | |
9e95d15f NS |
2877 | else if (is_overloaded_fn (decl)) |
2878 | { | |
eff3a276 | 2879 | tree first_fn; |
b3445994 | 2880 | |
eff3a276 MM |
2881 | first_fn = decl; |
2882 | if (TREE_CODE (first_fn) == TEMPLATE_ID_EXPR) | |
2883 | first_fn = TREE_OPERAND (first_fn, 0); | |
2884 | first_fn = get_first_fn (first_fn); | |
9e95d15f NS |
2885 | if (TREE_CODE (first_fn) == TEMPLATE_DECL) |
2886 | first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
415d4636 MM |
2887 | |
2888 | if (!really_overloaded_fn (decl)) | |
2889 | mark_used (first_fn); | |
2890 | ||
02ed62dd MM |
2891 | if (!template_arg_p |
2892 | && TREE_CODE (first_fn) == FUNCTION_DECL | |
821eaf2a MM |
2893 | && DECL_FUNCTION_MEMBER_P (first_fn) |
2894 | && !shared_member_p (decl)) | |
9e95d15f NS |
2895 | { |
2896 | /* A set of member functions. */ | |
2897 | decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
02ed62dd MM |
2898 | return finish_class_member_access_expr (decl, id_expression, |
2899 | /*template_p=*/false); | |
9e95d15f | 2900 | } |
eff3a276 MM |
2901 | |
2902 | decl = baselink_for_fns (decl); | |
9e95d15f NS |
2903 | } |
2904 | else | |
2905 | { | |
9e95d15f NS |
2906 | if (DECL_P (decl) && DECL_NONLOCAL (decl) |
2907 | && DECL_CLASS_SCOPE_P (decl) | |
2908 | && DECL_CONTEXT (decl) != current_class_type) | |
2909 | { | |
2910 | tree path; | |
c8094d83 | 2911 | |
9e95d15f | 2912 | path = currently_open_derived_class (DECL_CONTEXT (decl)); |
02022f3a | 2913 | perform_or_defer_access_check (TYPE_BINFO (path), decl, decl); |
9e95d15f | 2914 | } |
c8094d83 | 2915 | |
db24eb1f | 2916 | decl = convert_from_reference (decl); |
9e95d15f | 2917 | } |
b3445994 MM |
2918 | } |
2919 | ||
2920 | if (TREE_DEPRECATED (decl)) | |
2921 | warn_deprecated_use (decl); | |
2922 | ||
2923 | return decl; | |
2924 | } | |
2925 | ||
0213a355 JM |
2926 | /* Implement the __typeof keyword: Return the type of EXPR, suitable for |
2927 | use as a type-specifier. */ | |
2928 | ||
b894fc05 | 2929 | tree |
3a978d72 | 2930 | finish_typeof (tree expr) |
b894fc05 | 2931 | { |
65a5559b MM |
2932 | tree type; |
2933 | ||
dffbbe80 | 2934 | if (type_dependent_expression_p (expr)) |
b894fc05 | 2935 | { |
65a5559b | 2936 | type = make_aggr_type (TYPEOF_TYPE); |
eb34af89 | 2937 | TYPEOF_TYPE_EXPR (type) = expr; |
3ad6a8e1 | 2938 | SET_TYPE_STRUCTURAL_EQUALITY (type); |
b894fc05 | 2939 | |
65a5559b | 2940 | return type; |
b894fc05 JM |
2941 | } |
2942 | ||
3c38f0ff | 2943 | type = unlowered_expr_type (expr); |
65a5559b MM |
2944 | |
2945 | if (!type || type == unknown_type_node) | |
2946 | { | |
a82e1a7d | 2947 | error ("type of %qE is unknown", expr); |
65a5559b MM |
2948 | return error_mark_node; |
2949 | } | |
2950 | ||
2951 | return type; | |
b894fc05 | 2952 | } |
558475f0 | 2953 | |
c291f8b1 VR |
2954 | /* Perform C++-specific checks for __builtin_offsetof before calling |
2955 | fold_offsetof. */ | |
2956 | ||
2957 | tree | |
2958 | finish_offsetof (tree expr) | |
2959 | { | |
4c65a534 VR |
2960 | if (TREE_CODE (expr) == PSEUDO_DTOR_EXPR) |
2961 | { | |
2962 | error ("cannot apply %<offsetof%> to destructor %<~%T%>", | |
2963 | TREE_OPERAND (expr, 2)); | |
2964 | return error_mark_node; | |
2965 | } | |
c291f8b1 VR |
2966 | if (TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE |
2967 | || TREE_CODE (TREE_TYPE (expr)) == METHOD_TYPE | |
2968 | || TREE_CODE (TREE_TYPE (expr)) == UNKNOWN_TYPE) | |
2969 | { | |
1916c916 VR |
2970 | if (TREE_CODE (expr) == COMPONENT_REF |
2971 | || TREE_CODE (expr) == COMPOUND_EXPR) | |
0a9367cb VR |
2972 | expr = TREE_OPERAND (expr, 1); |
2973 | error ("cannot apply %<offsetof%> to member function %qD", expr); | |
c291f8b1 VR |
2974 | return error_mark_node; |
2975 | } | |
6d4d7b0e | 2976 | return fold_offsetof (expr, NULL_TREE); |
c291f8b1 VR |
2977 | } |
2978 | ||
3eb24f73 | 2979 | /* Called from expand_body via walk_tree. Replace all AGGR_INIT_EXPRs |
6de9cd9a | 2980 | with equivalent CALL_EXPRs. */ |
3eb24f73 MM |
2981 | |
2982 | static tree | |
c8094d83 | 2983 | simplify_aggr_init_exprs_r (tree* tp, |
0cbd7506 MS |
2984 | int* walk_subtrees, |
2985 | void* data ATTRIBUTE_UNUSED) | |
3eb24f73 | 2986 | { |
22e92ac3 MM |
2987 | /* We don't need to walk into types; there's nothing in a type that |
2988 | needs simplification. (And, furthermore, there are places we | |
2989 | actively don't want to go. For example, we don't want to wander | |
2990 | into the default arguments for a FUNCTION_DECL that appears in a | |
2991 | CALL_EXPR.) */ | |
9eeb200f | 2992 | if (TYPE_P (*tp)) |
22e92ac3 MM |
2993 | { |
2994 | *walk_subtrees = 0; | |
2995 | return NULL_TREE; | |
2996 | } | |
2997 | /* Only AGGR_INIT_EXPRs are interesting. */ | |
9eeb200f | 2998 | else if (TREE_CODE (*tp) != AGGR_INIT_EXPR) |
3eb24f73 MM |
2999 | return NULL_TREE; |
3000 | ||
9eeb200f JM |
3001 | simplify_aggr_init_expr (tp); |
3002 | ||
3003 | /* Keep iterating. */ | |
3004 | return NULL_TREE; | |
3005 | } | |
3006 | ||
3007 | /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This | |
3008 | function is broken out from the above for the benefit of the tree-ssa | |
3009 | project. */ | |
3010 | ||
3011 | void | |
3012 | simplify_aggr_init_expr (tree *tp) | |
3013 | { | |
3014 | tree aggr_init_expr = *tp; | |
3015 | ||
3eb24f73 | 3016 | /* Form an appropriate CALL_EXPR. */ |
5039610b SL |
3017 | tree fn = AGGR_INIT_EXPR_FN (aggr_init_expr); |
3018 | tree slot = AGGR_INIT_EXPR_SLOT (aggr_init_expr); | |
2692eb7d | 3019 | tree type = TREE_TYPE (slot); |
9eeb200f JM |
3020 | |
3021 | tree call_expr; | |
3022 | enum style_t { ctor, arg, pcc } style; | |
4977bab6 | 3023 | |
3eb24f73 | 3024 | if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) |
4977bab6 ZW |
3025 | style = ctor; |
3026 | #ifdef PCC_STATIC_STRUCT_RETURN | |
3027 | else if (1) | |
3028 | style = pcc; | |
3029 | #endif | |
4977bab6 | 3030 | else |
315fb5db NS |
3031 | { |
3032 | gcc_assert (TREE_ADDRESSABLE (type)); | |
3033 | style = arg; | |
3034 | } | |
4977bab6 | 3035 | |
5039610b SL |
3036 | call_expr = build_call_array (TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), |
3037 | fn, | |
3038 | aggr_init_expr_nargs (aggr_init_expr), | |
3039 | AGGR_INIT_EXPR_ARGP (aggr_init_expr)); | |
3040 | ||
fa47911c | 3041 | if (style == ctor) |
3eb24f73 | 3042 | { |
fa47911c JM |
3043 | /* Replace the first argument to the ctor with the address of the |
3044 | slot. */ | |
dffd7eb6 | 3045 | cxx_mark_addressable (slot); |
5039610b SL |
3046 | CALL_EXPR_ARG (call_expr, 0) = |
3047 | build1 (ADDR_EXPR, build_pointer_type (type), slot); | |
3eb24f73 | 3048 | } |
5039610b | 3049 | else if (style == arg) |
fa47911c JM |
3050 | { |
3051 | /* Just mark it addressable here, and leave the rest to | |
3052 | expand_call{,_inline}. */ | |
3053 | cxx_mark_addressable (slot); | |
3054 | CALL_EXPR_RETURN_SLOT_OPT (call_expr) = true; | |
3055 | call_expr = build2 (MODIFY_EXPR, TREE_TYPE (call_expr), slot, call_expr); | |
3056 | } | |
4977bab6 | 3057 | else if (style == pcc) |
3eb24f73 | 3058 | { |
4977bab6 ZW |
3059 | /* If we're using the non-reentrant PCC calling convention, then we |
3060 | need to copy the returned value out of the static buffer into the | |
3061 | SLOT. */ | |
78757caa | 3062 | push_deferring_access_checks (dk_no_check); |
46af705a JDA |
3063 | call_expr = build_aggr_init (slot, call_expr, |
3064 | DIRECT_BIND | LOOKUP_ONLYCONVERTING); | |
78757caa | 3065 | pop_deferring_access_checks (); |
d17791d6 | 3066 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (slot), call_expr, slot); |
3eb24f73 | 3067 | } |
3eb24f73 | 3068 | |
3eb24f73 | 3069 | *tp = call_expr; |
3eb24f73 MM |
3070 | } |
3071 | ||
31f8e4f3 MM |
3072 | /* Emit all thunks to FN that should be emitted when FN is emitted. */ |
3073 | ||
3074 | static void | |
3a978d72 | 3075 | emit_associated_thunks (tree fn) |
31f8e4f3 MM |
3076 | { |
3077 | /* When we use vcall offsets, we emit thunks with the virtual | |
3078 | functions to which they thunk. The whole point of vcall offsets | |
3079 | is so that you can know statically the entire set of thunks that | |
3080 | will ever be needed for a given virtual function, thereby | |
3081 | enabling you to output all the thunks with the function itself. */ | |
3461fba7 | 3082 | if (DECL_VIRTUAL_P (fn)) |
31f8e4f3 | 3083 | { |
bb5e8a7f | 3084 | tree thunk; |
c8094d83 | 3085 | |
bb5e8a7f | 3086 | for (thunk = DECL_THUNKS (fn); thunk; thunk = TREE_CHAIN (thunk)) |
4977bab6 | 3087 | { |
e00853fd | 3088 | if (!THUNK_ALIAS (thunk)) |
4977bab6 | 3089 | { |
bb885938 NS |
3090 | use_thunk (thunk, /*emit_p=*/1); |
3091 | if (DECL_RESULT_THUNK_P (thunk)) | |
3092 | { | |
3093 | tree probe; | |
c8094d83 | 3094 | |
bb885938 NS |
3095 | for (probe = DECL_THUNKS (thunk); |
3096 | probe; probe = TREE_CHAIN (probe)) | |
3097 | use_thunk (probe, /*emit_p=*/1); | |
3098 | } | |
4977bab6 | 3099 | } |
bb885938 | 3100 | else |
50bc768d | 3101 | gcc_assert (!DECL_THUNKS (thunk)); |
4977bab6 | 3102 | } |
31f8e4f3 MM |
3103 | } |
3104 | } | |
3105 | ||
558475f0 MM |
3106 | /* Generate RTL for FN. */ |
3107 | ||
3108 | void | |
3a978d72 | 3109 | expand_body (tree fn) |
558475f0 | 3110 | { |
367aa585 | 3111 | tree saved_function; |
6de9cd9a | 3112 | |
92788413 MM |
3113 | /* Compute the appropriate object-file linkage for inline |
3114 | functions. */ | |
79065db2 | 3115 | if (DECL_DECLARED_INLINE_P (fn)) |
92788413 MM |
3116 | import_export_decl (fn); |
3117 | ||
4f8e1232 MM |
3118 | /* If FN is external, then there's no point in generating RTL for |
3119 | it. This situation can arise with an inline function under | |
83662e2b | 3120 | `-fexternal-templates'; we instantiate the function, even though |
4f8e1232 MM |
3121 | we're not planning on emitting it, in case we get a chance to |
3122 | inline it. */ | |
3123 | if (DECL_EXTERNAL (fn)) | |
3124 | return; | |
3125 | ||
4985cde3 | 3126 | /* ??? When is this needed? */ |
367aa585 | 3127 | saved_function = current_function_decl; |
367aa585 | 3128 | |
de81ffd4 JH |
3129 | /* Emit any thunks that should be emitted at the same time as FN. */ |
3130 | emit_associated_thunks (fn); | |
3131 | ||
fa3ee801 DJ |
3132 | /* This function is only called from cgraph, or recursively from |
3133 | emit_associated_thunks. In neither case should we be currently | |
3134 | generating trees for a function. */ | |
3135 | gcc_assert (function_depth == 0); | |
3136 | ||
fc8600f9 | 3137 | c_expand_body (fn); |
d658cd4c | 3138 | |
367aa585 | 3139 | current_function_decl = saved_function; |
ea11ca7e | 3140 | |
85b22f78 NS |
3141 | if (DECL_CLONED_FUNCTION_P (fn)) |
3142 | { | |
3143 | /* If this is a clone, go through the other clones now and mark | |
0cbd7506 MS |
3144 | their parameters used. We have to do that here, as we don't |
3145 | know whether any particular clone will be expanded, and | |
3146 | therefore cannot pick one arbitrarily. */ | |
85b22f78 NS |
3147 | tree probe; |
3148 | ||
3149 | for (probe = TREE_CHAIN (DECL_CLONED_FUNCTION (fn)); | |
3150 | probe && DECL_CLONED_FUNCTION_P (probe); | |
3151 | probe = TREE_CHAIN (probe)) | |
3152 | { | |
3153 | tree parms; | |
3154 | ||
3155 | for (parms = DECL_ARGUMENTS (probe); | |
3156 | parms; parms = TREE_CHAIN (parms)) | |
3157 | TREE_USED (parms) = 1; | |
3158 | } | |
3159 | } | |
558475f0 | 3160 | } |
54f7877c | 3161 | |
8cd2462c JH |
3162 | /* Generate RTL for FN. */ |
3163 | ||
3164 | void | |
5671bf27 | 3165 | expand_or_defer_fn (tree fn) |
8cd2462c JH |
3166 | { |
3167 | /* When the parser calls us after finishing the body of a template | |
c353b8e3 MM |
3168 | function, we don't really want to expand the body. */ |
3169 | if (processing_template_decl) | |
8cd2462c JH |
3170 | { |
3171 | /* Normally, collection only occurs in rest_of_compilation. So, | |
3172 | if we don't collect here, we never collect junk generated | |
3173 | during the processing of templates until we hit a | |
27250734 MM |
3174 | non-template function. It's not safe to do this inside a |
3175 | nested class, though, as the parser may have local state that | |
3176 | is not a GC root. */ | |
3177 | if (!function_depth) | |
3178 | ggc_collect (); | |
8cd2462c JH |
3179 | return; |
3180 | } | |
3181 | ||
3182 | /* Replace AGGR_INIT_EXPRs with appropriate CALL_EXPRs. */ | |
3183 | walk_tree_without_duplicates (&DECL_SAVED_TREE (fn), | |
3184 | simplify_aggr_init_exprs_r, | |
3185 | NULL); | |
3186 | ||
3187 | /* If this is a constructor or destructor body, we have to clone | |
3188 | it. */ | |
3189 | if (maybe_clone_body (fn)) | |
3190 | { | |
3191 | /* We don't want to process FN again, so pretend we've written | |
3192 | it out, even though we haven't. */ | |
3193 | TREE_ASM_WRITTEN (fn) = 1; | |
3194 | return; | |
3195 | } | |
3196 | ||
4684cd27 MM |
3197 | /* We make a decision about linkage for these functions at the end |
3198 | of the compilation. Until that point, we do not want the back | |
3199 | end to output them -- but we do want it to see the bodies of | |
1a10290c | 3200 | these functions so that it can inline them as appropriate. */ |
4684cd27 MM |
3201 | if (DECL_DECLARED_INLINE_P (fn) || DECL_IMPLICIT_INSTANTIATION (fn)) |
3202 | { | |
1ef0df47 MM |
3203 | if (DECL_INTERFACE_KNOWN (fn)) |
3204 | /* We've already made a decision as to how this function will | |
3205 | be handled. */; | |
3206 | else if (!at_eof) | |
4684cd27 MM |
3207 | { |
3208 | DECL_EXTERNAL (fn) = 1; | |
3209 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
3210 | note_vague_linkage_fn (fn); | |
1ef0df47 MM |
3211 | /* A non-template inline function with external linkage will |
3212 | always be COMDAT. As we must eventually determine the | |
3213 | linkage of all functions, and as that causes writes to | |
3214 | the data mapped in from the PCH file, it's advantageous | |
3215 | to mark the functions at this point. */ | |
3216 | if (!DECL_IMPLICIT_INSTANTIATION (fn)) | |
3217 | { | |
3218 | /* This function must have external linkage, as | |
3219 | otherwise DECL_INTERFACE_KNOWN would have been | |
3220 | set. */ | |
3221 | gcc_assert (TREE_PUBLIC (fn)); | |
3222 | comdat_linkage (fn); | |
3223 | DECL_INTERFACE_KNOWN (fn) = 1; | |
3224 | } | |
4684cd27 MM |
3225 | } |
3226 | else | |
3227 | import_export_decl (fn); | |
1a10290c MM |
3228 | |
3229 | /* If the user wants us to keep all inline functions, then mark | |
3230 | this function as needed so that finish_file will make sure to | |
3231 | output it later. */ | |
3232 | if (flag_keep_inline_functions && DECL_DECLARED_INLINE_P (fn)) | |
3233 | mark_needed (fn); | |
4684cd27 MM |
3234 | } |
3235 | ||
8cd2462c JH |
3236 | /* There's no reason to do any of the work here if we're only doing |
3237 | semantic analysis; this code just generates RTL. */ | |
3238 | if (flag_syntax_only) | |
3239 | return; | |
3240 | ||
99edd65d RH |
3241 | function_depth++; |
3242 | ||
e4d91027 | 3243 | /* Expand or defer, at the whim of the compilation unit manager. */ |
6b00c969 | 3244 | cgraph_finalize_function (fn, function_depth > 1); |
99edd65d RH |
3245 | |
3246 | function_depth--; | |
8cd2462c JH |
3247 | } |
3248 | ||
6de9cd9a DN |
3249 | struct nrv_data |
3250 | { | |
3251 | tree var; | |
3252 | tree result; | |
3253 | htab_t visited; | |
3254 | }; | |
0d97bf4c | 3255 | |
6de9cd9a DN |
3256 | /* Helper function for walk_tree, used by finalize_nrv below. */ |
3257 | ||
3258 | static tree | |
3259 | finalize_nrv_r (tree* tp, int* walk_subtrees, void* data) | |
0d97bf4c | 3260 | { |
6de9cd9a DN |
3261 | struct nrv_data *dp = (struct nrv_data *)data; |
3262 | void **slot; | |
07b2f2fd JM |
3263 | |
3264 | /* No need to walk into types. There wouldn't be any need to walk into | |
3265 | non-statements, except that we have to consider STMT_EXPRs. */ | |
0d97bf4c JM |
3266 | if (TYPE_P (*tp)) |
3267 | *walk_subtrees = 0; | |
6de9cd9a DN |
3268 | /* Change all returns to just refer to the RESULT_DECL; this is a nop, |
3269 | but differs from using NULL_TREE in that it indicates that we care | |
3270 | about the value of the RESULT_DECL. */ | |
5088b058 RH |
3271 | else if (TREE_CODE (*tp) == RETURN_EXPR) |
3272 | TREE_OPERAND (*tp, 0) = dp->result; | |
6de9cd9a DN |
3273 | /* Change all cleanups for the NRV to only run when an exception is |
3274 | thrown. */ | |
07b2f2fd | 3275 | else if (TREE_CODE (*tp) == CLEANUP_STMT |
6de9cd9a | 3276 | && CLEANUP_DECL (*tp) == dp->var) |
659e5a7a | 3277 | CLEANUP_EH_ONLY (*tp) = 1; |
350fae66 | 3278 | /* Replace the DECL_EXPR for the NRV with an initialization of the |
6de9cd9a | 3279 | RESULT_DECL, if needed. */ |
350fae66 RK |
3280 | else if (TREE_CODE (*tp) == DECL_EXPR |
3281 | && DECL_EXPR_DECL (*tp) == dp->var) | |
6de9cd9a DN |
3282 | { |
3283 | tree init; | |
3284 | if (DECL_INITIAL (dp->var) | |
3285 | && DECL_INITIAL (dp->var) != error_mark_node) | |
3286 | { | |
f293ce4b RS |
3287 | init = build2 (INIT_EXPR, void_type_node, dp->result, |
3288 | DECL_INITIAL (dp->var)); | |
6de9cd9a DN |
3289 | DECL_INITIAL (dp->var) = error_mark_node; |
3290 | } | |
3291 | else | |
543a0daa | 3292 | init = build_empty_stmt (); |
6de9cd9a | 3293 | SET_EXPR_LOCUS (init, EXPR_LOCUS (*tp)); |
6de9cd9a DN |
3294 | *tp = init; |
3295 | } | |
3296 | /* And replace all uses of the NRV with the RESULT_DECL. */ | |
3297 | else if (*tp == dp->var) | |
3298 | *tp = dp->result; | |
3299 | ||
3300 | /* Avoid walking into the same tree more than once. Unfortunately, we | |
3301 | can't just use walk_tree_without duplicates because it would only call | |
3302 | us for the first occurrence of dp->var in the function body. */ | |
3303 | slot = htab_find_slot (dp->visited, *tp, INSERT); | |
3304 | if (*slot) | |
3305 | *walk_subtrees = 0; | |
3306 | else | |
3307 | *slot = *tp; | |
0d97bf4c JM |
3308 | |
3309 | /* Keep iterating. */ | |
3310 | return NULL_TREE; | |
3311 | } | |
3312 | ||
6de9cd9a | 3313 | /* Called from finish_function to implement the named return value |
5088b058 | 3314 | optimization by overriding all the RETURN_EXPRs and pertinent |
6de9cd9a DN |
3315 | CLEANUP_STMTs and replacing all occurrences of VAR with RESULT, the |
3316 | RESULT_DECL for the function. */ | |
f444e36b | 3317 | |
4985cde3 | 3318 | void |
6de9cd9a | 3319 | finalize_nrv (tree *tp, tree var, tree result) |
f444e36b | 3320 | { |
6de9cd9a DN |
3321 | struct nrv_data data; |
3322 | ||
3323 | /* Copy debugging information from VAR to RESULT. */ | |
3324 | DECL_NAME (result) = DECL_NAME (var); | |
b785f485 RH |
3325 | DECL_ARTIFICIAL (result) = DECL_ARTIFICIAL (var); |
3326 | DECL_IGNORED_P (result) = DECL_IGNORED_P (var); | |
6de9cd9a DN |
3327 | DECL_SOURCE_LOCATION (result) = DECL_SOURCE_LOCATION (var); |
3328 | DECL_ABSTRACT_ORIGIN (result) = DECL_ABSTRACT_ORIGIN (var); | |
3329 | /* Don't forget that we take its address. */ | |
3330 | TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (var); | |
3331 | ||
3332 | data.var = var; | |
3333 | data.result = result; | |
3334 | data.visited = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3335 | walk_tree (tp, finalize_nrv_r, &data, 0); | |
3336 | htab_delete (data.visited); | |
b850de4f | 3337 | } |
1799e5d5 RH |
3338 | \f |
3339 | /* For all elements of CLAUSES, validate them vs OpenMP constraints. | |
3340 | Remove any elements from the list that are invalid. */ | |
3341 | ||
3342 | tree | |
3343 | finish_omp_clauses (tree clauses) | |
3344 | { | |
3345 | bitmap_head generic_head, firstprivate_head, lastprivate_head; | |
3346 | tree c, t, *pc = &clauses; | |
3347 | const char *name; | |
3348 | ||
3349 | bitmap_obstack_initialize (NULL); | |
3350 | bitmap_initialize (&generic_head, &bitmap_default_obstack); | |
3351 | bitmap_initialize (&firstprivate_head, &bitmap_default_obstack); | |
3352 | bitmap_initialize (&lastprivate_head, &bitmap_default_obstack); | |
3353 | ||
3354 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3355 | { | |
3356 | bool remove = false; | |
3357 | ||
3358 | switch (OMP_CLAUSE_CODE (c)) | |
3359 | { | |
3360 | case OMP_CLAUSE_SHARED: | |
3361 | name = "shared"; | |
3362 | goto check_dup_generic; | |
3363 | case OMP_CLAUSE_PRIVATE: | |
3364 | name = "private"; | |
3365 | goto check_dup_generic; | |
3366 | case OMP_CLAUSE_REDUCTION: | |
3367 | name = "reduction"; | |
3368 | goto check_dup_generic; | |
3369 | case OMP_CLAUSE_COPYPRIVATE: | |
3370 | name = "copyprivate"; | |
3371 | goto check_dup_generic; | |
3372 | case OMP_CLAUSE_COPYIN: | |
3373 | name = "copyin"; | |
3374 | goto check_dup_generic; | |
3375 | check_dup_generic: | |
3376 | t = OMP_CLAUSE_DECL (c); | |
3377 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3378 | { | |
3379 | if (processing_template_decl) | |
3380 | break; | |
76dc15d4 JJ |
3381 | if (DECL_P (t)) |
3382 | error ("%qD is not a variable in clause %qs", t, name); | |
3383 | else | |
3384 | error ("%qE is not a variable in clause %qs", t, name); | |
1799e5d5 RH |
3385 | remove = true; |
3386 | } | |
3387 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3388 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t)) | |
3389 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3390 | { | |
76dc15d4 | 3391 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3392 | remove = true; |
3393 | } | |
3394 | else | |
3395 | bitmap_set_bit (&generic_head, DECL_UID (t)); | |
3396 | break; | |
3397 | ||
3398 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3399 | t = OMP_CLAUSE_DECL (c); | |
3400 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3401 | { | |
3402 | if (processing_template_decl) | |
3403 | break; | |
3404 | error ("%qE is not a variable in clause %<firstprivate%>", t); | |
3405 | remove = true; | |
3406 | } | |
3407 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3408 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3409 | { | |
3410 | error ("%qE appears more than once in data clauses", t); | |
3411 | remove = true; | |
3412 | } | |
3413 | else | |
3414 | bitmap_set_bit (&firstprivate_head, DECL_UID (t)); | |
3415 | break; | |
3416 | ||
3417 | case OMP_CLAUSE_LASTPRIVATE: | |
3418 | t = OMP_CLAUSE_DECL (c); | |
3419 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3420 | { | |
3421 | if (processing_template_decl) | |
3422 | break; | |
3423 | error ("%qE is not a variable in clause %<lastprivate%>", t); | |
3424 | remove = true; | |
3425 | } | |
3426 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3427 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3428 | { | |
3429 | error ("%qE appears more than once in data clauses", t); | |
3430 | remove = true; | |
3431 | } | |
3432 | else | |
3433 | bitmap_set_bit (&lastprivate_head, DECL_UID (t)); | |
3434 | break; | |
3435 | ||
3436 | case OMP_CLAUSE_IF: | |
3437 | t = OMP_CLAUSE_IF_EXPR (c); | |
3438 | t = maybe_convert_cond (t); | |
3439 | if (t == error_mark_node) | |
3440 | remove = true; | |
3441 | OMP_CLAUSE_IF_EXPR (c) = t; | |
3442 | break; | |
3443 | ||
3444 | case OMP_CLAUSE_NUM_THREADS: | |
3445 | t = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
3446 | if (t == error_mark_node) | |
3447 | remove = true; | |
3448 | else if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
3449 | && !type_dependent_expression_p (t)) | |
3450 | { | |
3451 | error ("num_threads expression must be integral"); | |
3452 | remove = true; | |
3453 | } | |
3454 | break; | |
3455 | ||
3456 | case OMP_CLAUSE_SCHEDULE: | |
3457 | t = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c); | |
3458 | if (t == NULL) | |
3459 | ; | |
3460 | else if (t == error_mark_node) | |
3461 | remove = true; | |
3462 | else if (!INTEGRAL_TYPE_P (TREE_TYPE (t)) | |
3463 | && !type_dependent_expression_p (t)) | |
3464 | { | |
3465 | error ("schedule chunk size expression must be integral"); | |
3466 | remove = true; | |
3467 | } | |
3468 | break; | |
3469 | ||
3470 | case OMP_CLAUSE_NOWAIT: | |
3471 | case OMP_CLAUSE_ORDERED: | |
3472 | case OMP_CLAUSE_DEFAULT: | |
3473 | break; | |
3474 | ||
3475 | default: | |
3476 | gcc_unreachable (); | |
3477 | } | |
3478 | ||
3479 | if (remove) | |
3480 | *pc = OMP_CLAUSE_CHAIN (c); | |
3481 | else | |
3482 | pc = &OMP_CLAUSE_CHAIN (c); | |
3483 | } | |
3484 | ||
3485 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3486 | { | |
3487 | enum tree_code c_kind = OMP_CLAUSE_CODE (c); | |
3488 | bool remove = false; | |
3489 | bool need_complete_non_reference = false; | |
3490 | bool need_default_ctor = false; | |
3491 | bool need_copy_ctor = false; | |
3492 | bool need_copy_assignment = false; | |
3493 | bool need_implicitly_determined = false; | |
3494 | tree type, inner_type; | |
3495 | ||
3496 | switch (c_kind) | |
3497 | { | |
3498 | case OMP_CLAUSE_SHARED: | |
3499 | name = "shared"; | |
3500 | need_implicitly_determined = true; | |
3501 | break; | |
3502 | case OMP_CLAUSE_PRIVATE: | |
3503 | name = "private"; | |
3504 | need_complete_non_reference = true; | |
3505 | need_default_ctor = true; | |
3506 | need_implicitly_determined = true; | |
3507 | break; | |
3508 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3509 | name = "firstprivate"; | |
3510 | need_complete_non_reference = true; | |
3511 | need_copy_ctor = true; | |
3512 | need_implicitly_determined = true; | |
3513 | break; | |
3514 | case OMP_CLAUSE_LASTPRIVATE: | |
3515 | name = "lastprivate"; | |
3516 | need_complete_non_reference = true; | |
3517 | need_copy_assignment = true; | |
3518 | need_implicitly_determined = true; | |
3519 | break; | |
3520 | case OMP_CLAUSE_REDUCTION: | |
3521 | name = "reduction"; | |
3522 | need_implicitly_determined = true; | |
3523 | break; | |
3524 | case OMP_CLAUSE_COPYPRIVATE: | |
3525 | name = "copyprivate"; | |
3526 | need_copy_assignment = true; | |
3527 | break; | |
3528 | case OMP_CLAUSE_COPYIN: | |
3529 | name = "copyin"; | |
3530 | need_copy_assignment = true; | |
3531 | break; | |
3532 | default: | |
3533 | pc = &OMP_CLAUSE_CHAIN (c); | |
3534 | continue; | |
3535 | } | |
3536 | ||
3537 | t = OMP_CLAUSE_DECL (c); | |
3538 | if (processing_template_decl | |
3539 | && TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3540 | { | |
3541 | pc = &OMP_CLAUSE_CHAIN (c); | |
3542 | continue; | |
3543 | } | |
3544 | ||
3545 | switch (c_kind) | |
3546 | { | |
3547 | case OMP_CLAUSE_LASTPRIVATE: | |
3548 | if (!bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3549 | need_default_ctor = true; | |
3550 | break; | |
3551 | ||
3552 | case OMP_CLAUSE_REDUCTION: | |
3553 | if (AGGREGATE_TYPE_P (TREE_TYPE (t)) | |
3554 | || POINTER_TYPE_P (TREE_TYPE (t))) | |
3555 | { | |
3556 | error ("%qE has invalid type for %<reduction%>", t); | |
3557 | remove = true; | |
3558 | } | |
3559 | else if (FLOAT_TYPE_P (TREE_TYPE (t))) | |
3560 | { | |
3561 | enum tree_code r_code = OMP_CLAUSE_REDUCTION_CODE (c); | |
3562 | switch (r_code) | |
3563 | { | |
3564 | case PLUS_EXPR: | |
3565 | case MULT_EXPR: | |
3566 | case MINUS_EXPR: | |
3567 | break; | |
3568 | default: | |
3569 | error ("%qE has invalid type for %<reduction(%s)%>", | |
3570 | t, operator_name_info[r_code].name); | |
3571 | remove = true; | |
3572 | } | |
3573 | } | |
3574 | break; | |
3575 | ||
3576 | case OMP_CLAUSE_COPYIN: | |
3577 | if (TREE_CODE (t) != VAR_DECL || !DECL_THREAD_LOCAL_P (t)) | |
3578 | { | |
3579 | error ("%qE must be %<threadprivate%> for %<copyin%>", t); | |
3580 | remove = true; | |
3581 | } | |
3582 | break; | |
3583 | ||
3584 | default: | |
3585 | break; | |
3586 | } | |
3587 | ||
3588 | if (need_complete_non_reference) | |
3589 | { | |
3590 | t = require_complete_type (t); | |
3591 | if (t == error_mark_node) | |
3592 | remove = true; | |
3593 | else if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE) | |
3594 | { | |
3595 | error ("%qE has reference type for %qs", t, name); | |
3596 | remove = true; | |
3597 | } | |
3598 | } | |
3599 | if (need_implicitly_determined) | |
3600 | { | |
3601 | const char *share_name = NULL; | |
3602 | ||
3603 | if (TREE_CODE (t) == VAR_DECL && DECL_THREAD_LOCAL_P (t)) | |
3604 | share_name = "threadprivate"; | |
3605 | else switch (cxx_omp_predetermined_sharing (t)) | |
3606 | { | |
3607 | case OMP_CLAUSE_DEFAULT_UNSPECIFIED: | |
3608 | break; | |
3609 | case OMP_CLAUSE_DEFAULT_SHARED: | |
3610 | share_name = "shared"; | |
3611 | break; | |
3612 | case OMP_CLAUSE_DEFAULT_PRIVATE: | |
3613 | share_name = "private"; | |
3614 | break; | |
3615 | default: | |
3616 | gcc_unreachable (); | |
3617 | } | |
3618 | if (share_name) | |
3619 | { | |
3620 | error ("%qE is predetermined %qs for %qs", | |
3621 | t, share_name, name); | |
3622 | remove = true; | |
3623 | } | |
3624 | } | |
3625 | ||
3626 | /* We're interested in the base element, not arrays. */ | |
3627 | inner_type = type = TREE_TYPE (t); | |
3628 | while (TREE_CODE (inner_type) == ARRAY_TYPE) | |
3629 | inner_type = TREE_TYPE (inner_type); | |
3630 | ||
84dc00e8 | 3631 | /* Check for special function availability by building a call to one. |
1799e5d5 RH |
3632 | Save the results, because later we won't be in the right context |
3633 | for making these queries. */ | |
3634 | if (CLASS_TYPE_P (inner_type) | |
6f719560 JJ |
3635 | && (need_default_ctor || need_copy_ctor || need_copy_assignment) |
3636 | && !type_dependent_expression_p (t)) | |
1799e5d5 RH |
3637 | { |
3638 | int save_errorcount = errorcount; | |
3639 | tree info; | |
3640 | ||
3641 | /* Always allocate 3 elements for simplicity. These are the | |
3642 | function decls for the ctor, dtor, and assignment op. | |
3643 | This layout is known to the three lang hooks, | |
3644 | cxx_omp_clause_default_init, cxx_omp_clause_copy_init, | |
3645 | and cxx_omp_clause_assign_op. */ | |
3646 | info = make_tree_vec (3); | |
3647 | CP_OMP_CLAUSE_INFO (c) = info; | |
3648 | ||
3649 | if (need_default_ctor | |
3650 | || (need_copy_ctor | |
3651 | && !TYPE_HAS_TRIVIAL_INIT_REF (inner_type))) | |
3652 | { | |
3653 | if (need_default_ctor) | |
3654 | t = NULL; | |
3655 | else | |
3656 | { | |
3657 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3658 | t = build1 (INDIRECT_REF, inner_type, t); | |
3659 | t = build_tree_list (NULL, t); | |
3660 | } | |
3661 | t = build_special_member_call (NULL_TREE, | |
3662 | complete_ctor_identifier, | |
3663 | t, inner_type, LOOKUP_NORMAL); | |
3664 | t = get_callee_fndecl (t); | |
3665 | TREE_VEC_ELT (info, 0) = t; | |
3666 | } | |
3667 | ||
3668 | if ((need_default_ctor || need_copy_ctor) | |
3669 | && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (inner_type)) | |
3670 | { | |
3671 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3672 | t = build1 (INDIRECT_REF, inner_type, t); | |
3673 | t = build_special_member_call (t, complete_dtor_identifier, | |
3674 | NULL, inner_type, LOOKUP_NORMAL); | |
3675 | t = get_callee_fndecl (t); | |
3676 | TREE_VEC_ELT (info, 1) = t; | |
3677 | } | |
3678 | ||
3679 | if (need_copy_assignment | |
3680 | && !TYPE_HAS_TRIVIAL_ASSIGN_REF (inner_type)) | |
3681 | { | |
3682 | t = build_int_cst (build_pointer_type (inner_type), 0); | |
3683 | t = build1 (INDIRECT_REF, inner_type, t); | |
3684 | t = build_special_member_call (t, ansi_assopname (NOP_EXPR), | |
3685 | build_tree_list (NULL, t), | |
3686 | inner_type, LOOKUP_NORMAL); | |
3687 | ||
3688 | /* We'll have called convert_from_reference on the call, which | |
3db45ab5 | 3689 | may well have added an indirect_ref. It's unneeded here, |
1799e5d5 RH |
3690 | and in the way, so kill it. */ |
3691 | if (TREE_CODE (t) == INDIRECT_REF) | |
3692 | t = TREE_OPERAND (t, 0); | |
3693 | ||
3694 | t = get_callee_fndecl (t); | |
3695 | TREE_VEC_ELT (info, 2) = t; | |
3696 | } | |
3697 | ||
3698 | if (errorcount != save_errorcount) | |
3699 | remove = true; | |
3700 | } | |
3701 | ||
3702 | if (remove) | |
3703 | *pc = OMP_CLAUSE_CHAIN (c); | |
3704 | else | |
3705 | pc = &OMP_CLAUSE_CHAIN (c); | |
3706 | } | |
3707 | ||
3708 | bitmap_obstack_release (NULL); | |
3709 | return clauses; | |
3710 | } | |
3711 | ||
3712 | /* For all variables in the tree_list VARS, mark them as thread local. */ | |
3713 | ||
3714 | void | |
3715 | finish_omp_threadprivate (tree vars) | |
3716 | { | |
3717 | tree t; | |
3718 | ||
3719 | /* Mark every variable in VARS to be assigned thread local storage. */ | |
3720 | for (t = vars; t; t = TREE_CHAIN (t)) | |
3721 | { | |
3722 | tree v = TREE_PURPOSE (t); | |
3723 | ||
3724 | /* If V had already been marked threadprivate, it doesn't matter | |
3725 | whether it had been used prior to this point. */ | |
3726 | if (TREE_USED (v) | |
3727 | && (DECL_LANG_SPECIFIC (v) == NULL | |
3728 | || !CP_DECL_THREADPRIVATE_P (v))) | |
3729 | error ("%qE declared %<threadprivate%> after first use", v); | |
3730 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) | |
3731 | error ("automatic variable %qE cannot be %<threadprivate%>", v); | |
3732 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) | |
3733 | error ("%<threadprivate%> %qE has incomplete type", v); | |
3734 | else if (TREE_STATIC (v) && TYPE_P (CP_DECL_CONTEXT (v))) | |
3735 | error ("%<threadprivate%> %qE is not file, namespace " | |
3736 | "or block scope variable", v); | |
3737 | else | |
3738 | { | |
3739 | /* Allocate a LANG_SPECIFIC structure for V, if needed. */ | |
3740 | if (DECL_LANG_SPECIFIC (v) == NULL) | |
3741 | { | |
3742 | retrofit_lang_decl (v); | |
3743 | ||
3744 | /* Make sure that DECL_DISCRIMINATOR_P continues to be true | |
3745 | after the allocation of the lang_decl structure. */ | |
3746 | if (DECL_DISCRIMINATOR_P (v)) | |
3747 | DECL_LANG_SPECIFIC (v)->decl_flags.u2sel = 1; | |
3748 | } | |
3749 | ||
3750 | if (! DECL_THREAD_LOCAL_P (v)) | |
3751 | { | |
3752 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
3753 | /* If rtl has been already set for this var, call | |
3754 | make_decl_rtl once again, so that encode_section_info | |
3755 | has a chance to look at the new decl flags. */ | |
3756 | if (DECL_RTL_SET_P (v)) | |
3757 | make_decl_rtl (v); | |
3758 | } | |
3759 | CP_DECL_THREADPRIVATE_P (v) = 1; | |
3760 | } | |
3761 | } | |
3762 | } | |
3763 | ||
3764 | /* Build an OpenMP structured block. */ | |
3765 | ||
3766 | tree | |
3767 | begin_omp_structured_block (void) | |
3768 | { | |
3769 | return do_pushlevel (sk_omp); | |
3770 | } | |
3771 | ||
3772 | tree | |
3773 | finish_omp_structured_block (tree block) | |
3774 | { | |
3775 | return do_poplevel (block); | |
3776 | } | |
3777 | ||
84dc00e8 | 3778 | /* Similarly, except force the retention of the BLOCK. */ |
1799e5d5 RH |
3779 | |
3780 | tree | |
3781 | begin_omp_parallel (void) | |
3782 | { | |
3783 | keep_next_level (true); | |
3784 | return begin_omp_structured_block (); | |
3785 | } | |
3786 | ||
3787 | tree | |
3788 | finish_omp_parallel (tree clauses, tree body) | |
3789 | { | |
3790 | tree stmt; | |
3791 | ||
3792 | body = finish_omp_structured_block (body); | |
b850de4f | 3793 | |
1799e5d5 RH |
3794 | stmt = make_node (OMP_PARALLEL); |
3795 | TREE_TYPE (stmt) = void_type_node; | |
3796 | OMP_PARALLEL_CLAUSES (stmt) = clauses; | |
3797 | OMP_PARALLEL_BODY (stmt) = body; | |
54f7877c | 3798 | |
1799e5d5 RH |
3799 | return add_stmt (stmt); |
3800 | } | |
3801 | ||
3802 | /* Build and validate an OMP_FOR statement. CLAUSES, BODY, COND, INCR | |
3803 | are directly for their associated operands in the statement. DECL | |
3804 | and INIT are a combo; if DECL is NULL then INIT ought to be a | |
3805 | MODIFY_EXPR, and the DECL should be extracted. PRE_BODY are | |
3806 | optional statements that need to go before the loop into its | |
3807 | sk_omp scope. */ | |
3808 | ||
3809 | tree | |
3810 | finish_omp_for (location_t locus, tree decl, tree init, tree cond, | |
3811 | tree incr, tree body, tree pre_body) | |
3812 | { | |
969c111d JJ |
3813 | tree omp_for; |
3814 | ||
1799e5d5 RH |
3815 | if (decl == NULL) |
3816 | { | |
3817 | if (init != NULL) | |
3818 | switch (TREE_CODE (init)) | |
3819 | { | |
3820 | case MODIFY_EXPR: | |
3821 | decl = TREE_OPERAND (init, 0); | |
3822 | init = TREE_OPERAND (init, 1); | |
3823 | break; | |
3824 | case MODOP_EXPR: | |
3825 | if (TREE_CODE (TREE_OPERAND (init, 1)) == NOP_EXPR) | |
3826 | { | |
3827 | decl = TREE_OPERAND (init, 0); | |
3828 | init = TREE_OPERAND (init, 2); | |
3829 | } | |
3830 | break; | |
3831 | default: | |
3832 | break; | |
3833 | } | |
3834 | ||
3835 | if (decl == NULL) | |
3836 | { | |
3837 | error ("expected iteration declaration or initialization"); | |
3838 | return NULL; | |
3839 | } | |
3840 | } | |
3841 | ||
3842 | if (type_dependent_expression_p (decl) | |
3843 | || type_dependent_expression_p (init) | |
3844 | || (cond && type_dependent_expression_p (cond)) | |
3845 | || (incr && type_dependent_expression_p (incr))) | |
3846 | { | |
3847 | tree stmt; | |
3848 | ||
3849 | if (cond == NULL) | |
3850 | { | |
3851 | error ("%Hmissing controlling predicate", &locus); | |
3852 | return NULL; | |
3853 | } | |
3854 | ||
3855 | if (incr == NULL) | |
3856 | { | |
3857 | error ("%Hmissing increment expression", &locus); | |
3858 | return NULL; | |
3859 | } | |
3860 | ||
3861 | stmt = make_node (OMP_FOR); | |
3862 | ||
3863 | /* This is really just a place-holder. We'll be decomposing this | |
3864 | again and going through the build_modify_expr path below when | |
3865 | we instantiate the thing. */ | |
3866 | init = build2 (MODIFY_EXPR, void_type_node, decl, init); | |
3867 | ||
3868 | TREE_TYPE (stmt) = void_type_node; | |
3869 | OMP_FOR_INIT (stmt) = init; | |
3870 | OMP_FOR_COND (stmt) = cond; | |
3871 | OMP_FOR_INCR (stmt) = incr; | |
3872 | OMP_FOR_BODY (stmt) = body; | |
3873 | OMP_FOR_PRE_BODY (stmt) = pre_body; | |
3874 | ||
3875 | SET_EXPR_LOCATION (stmt, locus); | |
3876 | return add_stmt (stmt); | |
3877 | } | |
3878 | ||
3879 | if (!DECL_P (decl)) | |
3880 | { | |
3881 | error ("expected iteration declaration or initialization"); | |
3882 | return NULL; | |
3883 | } | |
3884 | ||
3885 | if (pre_body == NULL || IS_EMPTY_STMT (pre_body)) | |
3886 | pre_body = NULL; | |
3887 | else if (! processing_template_decl) | |
3888 | { | |
3889 | add_stmt (pre_body); | |
3890 | pre_body = NULL; | |
3891 | } | |
969c111d JJ |
3892 | |
3893 | init = fold_build_cleanup_point_expr (TREE_TYPE (init), init); | |
1799e5d5 | 3894 | init = build_modify_expr (decl, NOP_EXPR, init); |
969c111d JJ |
3895 | if (cond && TREE_SIDE_EFFECTS (cond) && COMPARISON_CLASS_P (cond)) |
3896 | { | |
3897 | int n = TREE_SIDE_EFFECTS (TREE_OPERAND (cond, 1)) != 0; | |
3898 | tree t = TREE_OPERAND (cond, n); | |
3899 | ||
3900 | TREE_OPERAND (cond, n) | |
3901 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
3902 | } | |
3903 | omp_for = c_finish_omp_for (locus, decl, init, cond, incr, body, pre_body); | |
3904 | if (omp_for != NULL | |
3905 | && TREE_CODE (OMP_FOR_INCR (omp_for)) == MODIFY_EXPR | |
3906 | && TREE_SIDE_EFFECTS (TREE_OPERAND (OMP_FOR_INCR (omp_for), 1)) | |
3907 | && BINARY_CLASS_P (TREE_OPERAND (OMP_FOR_INCR (omp_for), 1))) | |
3908 | { | |
3909 | tree t = TREE_OPERAND (OMP_FOR_INCR (omp_for), 1); | |
3910 | int n = TREE_SIDE_EFFECTS (TREE_OPERAND (t, 1)) != 0; | |
3911 | ||
3912 | TREE_OPERAND (t, n) | |
3913 | = fold_build_cleanup_point_expr (TREE_TYPE (TREE_OPERAND (t, n)), | |
3914 | TREE_OPERAND (t, n)); | |
3915 | } | |
3916 | return omp_for; | |
1799e5d5 RH |
3917 | } |
3918 | ||
3919 | void | |
3920 | finish_omp_atomic (enum tree_code code, tree lhs, tree rhs) | |
3921 | { | |
e6bd5565 MM |
3922 | tree stmt; |
3923 | ||
4fe70b31 PB |
3924 | if (processing_template_decl |
3925 | && (type_dependent_expression_p (lhs) | |
3926 | || type_dependent_expression_p (rhs))) | |
3927 | stmt = build2 (OMP_ATOMIC, void_type_node, integer_zero_node, | |
3928 | build2 (code, void_type_node, lhs, rhs)); | |
3929 | else | |
e6bd5565 | 3930 | { |
4fe70b31 PB |
3931 | /* Even in a template, we can detect invalid uses of the atomic |
3932 | pragma if neither LHS nor RHS is type-dependent. */ | |
3933 | if (processing_template_decl) | |
e6bd5565 MM |
3934 | { |
3935 | lhs = build_non_dependent_expr (lhs); | |
3936 | rhs = build_non_dependent_expr (rhs); | |
3937 | } | |
4fe70b31 | 3938 | |
e6bd5565 | 3939 | stmt = c_finish_omp_atomic (code, lhs, rhs); |
e6bd5565 | 3940 | } |
4fe70b31 PB |
3941 | |
3942 | if (stmt != error_mark_node) | |
3943 | add_stmt (stmt); | |
1799e5d5 RH |
3944 | } |
3945 | ||
3946 | void | |
3947 | finish_omp_barrier (void) | |
3948 | { | |
3949 | tree fn = built_in_decls[BUILT_IN_GOMP_BARRIER]; | |
3950 | tree stmt = finish_call_expr (fn, NULL, false, false); | |
3951 | finish_expr_stmt (stmt); | |
3952 | } | |
3953 | ||
3954 | void | |
3955 | finish_omp_flush (void) | |
3956 | { | |
3957 | tree fn = built_in_decls[BUILT_IN_SYNCHRONIZE]; | |
3958 | tree stmt = finish_call_expr (fn, NULL, false, false); | |
3959 | finish_expr_stmt (stmt); | |
3960 | } | |
3961 | ||
3962 | /* True if OpenMP sharing attribute of DECL is predetermined. */ | |
3963 | ||
3964 | enum omp_clause_default_kind | |
3965 | cxx_omp_predetermined_sharing (tree decl) | |
3966 | { | |
3967 | enum omp_clause_default_kind kind; | |
3968 | ||
3969 | kind = c_omp_predetermined_sharing (decl); | |
3970 | if (kind != OMP_CLAUSE_DEFAULT_UNSPECIFIED) | |
3971 | return kind; | |
3972 | ||
3973 | /* Static data members are predetermined as shared. */ | |
3974 | if (TREE_STATIC (decl)) | |
3975 | { | |
3976 | tree ctx = CP_DECL_CONTEXT (decl); | |
3977 | if (TYPE_P (ctx) && IS_AGGR_TYPE (ctx)) | |
3978 | return OMP_CLAUSE_DEFAULT_SHARED; | |
3979 | } | |
3980 | ||
3981 | return OMP_CLAUSE_DEFAULT_UNSPECIFIED; | |
3982 | } | |
3983 | \f | |
54f7877c | 3984 | void |
3a978d72 | 3985 | init_cp_semantics (void) |
54f7877c | 3986 | { |
54f7877c | 3987 | } |
55a3debe DG |
3988 | \f |
3989 | /* Build a STATIC_ASSERT for a static assertion with the condition | |
3990 | CONDITION and the message text MESSAGE. LOCATION is the location | |
3991 | of the static assertion in the source code. When MEMBER_P, this | |
3992 | static assertion is a member of a class. */ | |
3993 | void | |
3994 | finish_static_assert (tree condition, tree message, location_t location, | |
3995 | bool member_p) | |
3996 | { | |
3997 | if (type_dependent_expression_p (condition) | |
3998 | || value_dependent_expression_p (condition)) | |
3999 | { | |
4000 | /* We're in a template; build a STATIC_ASSERT and put it in | |
4001 | the right place. */ | |
4002 | tree assertion; | |
4003 | ||
4004 | assertion = make_node (STATIC_ASSERT); | |
4005 | STATIC_ASSERT_CONDITION (assertion) = condition; | |
4006 | STATIC_ASSERT_MESSAGE (assertion) = message; | |
4007 | STATIC_ASSERT_SOURCE_LOCATION (assertion) = location; | |
4008 | ||
4009 | if (member_p) | |
4010 | maybe_add_class_template_decl_list (current_class_type, | |
4011 | assertion, | |
4012 | /*friend_p=*/0); | |
4013 | else | |
4014 | add_stmt (assertion); | |
4015 | ||
4016 | return; | |
4017 | } | |
4018 | ||
4019 | /* Fold the expression and convert it to a boolean value. */ | |
4020 | condition = fold_non_dependent_expr (condition); | |
4021 | condition = cp_convert (boolean_type_node, condition); | |
4022 | ||
4023 | if (TREE_CODE (condition) == INTEGER_CST && !integer_zerop (condition)) | |
4024 | /* Do nothing; the condition is satisfied. */ | |
4025 | ; | |
4026 | else | |
4027 | { | |
4028 | location_t saved_loc = input_location; | |
4029 | ||
4030 | input_location = location; | |
4031 | if (TREE_CODE (condition) == INTEGER_CST | |
4032 | && integer_zerop (condition)) | |
4033 | /* Report the error. */ | |
4034 | error ("static assertion failed: %E", message); | |
4035 | else if (condition && condition != error_mark_node) | |
4036 | error ("non-constant condition for static assertion"); | |
4037 | input_location = saved_loc; | |
4038 | } | |
4039 | } | |
3ad6a8e1 DG |
4040 | \f |
4041 | /* Implements the C++0x decltype keyword. Returns the type of EXPR, | |
4042 | suitable for use as a type-specifier. | |
4043 | ||
4044 | ID_EXPRESSION_OR_MEMBER_ACCESS_P is true when EXPR was parsed as an | |
4045 | id-expression or a class member access, FALSE when it was parsed as | |
4046 | a full expression. */ | |
4047 | tree | |
4048 | finish_decltype_type (tree expr, bool id_expression_or_member_access_p) | |
4049 | { | |
4050 | tree orig_expr = expr; | |
4051 | tree type; | |
4052 | ||
4053 | if (type_dependent_expression_p (expr)) | |
4054 | { | |
4055 | type = make_aggr_type (DECLTYPE_TYPE); | |
4056 | DECLTYPE_TYPE_EXPR (type) = expr; | |
4057 | DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type) | |
4058 | = id_expression_or_member_access_p; | |
4059 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
4060 | ||
4061 | return type; | |
4062 | } | |
4063 | ||
4064 | /* The type denoted by decltype(e) is defined as follows: */ | |
4065 | ||
4066 | if (id_expression_or_member_access_p) | |
4067 | { | |
4068 | /* If e is an id-expression or a class member access (5.2.5 | |
4069 | [expr.ref]), decltype(e) is defined as the type of the entity | |
4070 | named by e. If there is no such entity, or e names a set of | |
4071 | overloaded functions, the program is ill-formed. */ | |
4072 | if (TREE_CODE (expr) == IDENTIFIER_NODE) | |
4073 | expr = lookup_name (expr); | |
4074 | ||
4075 | if (TREE_CODE (expr) == INDIRECT_REF) | |
4076 | /* This can happen when the expression is, e.g., "a.b". Just | |
4077 | look at the underlying operand. */ | |
4078 | expr = TREE_OPERAND (expr, 0); | |
4079 | ||
4080 | if (TREE_CODE (expr) == OFFSET_REF | |
4081 | || TREE_CODE (expr) == MEMBER_REF) | |
4082 | /* We're only interested in the field itself. If it is a | |
4083 | BASELINK, we will need to see through it in the next | |
4084 | step. */ | |
4085 | expr = TREE_OPERAND (expr, 1); | |
4086 | ||
4087 | if (TREE_CODE (expr) == BASELINK) | |
4088 | /* See through BASELINK nodes to the underlying functions. */ | |
4089 | expr = BASELINK_FUNCTIONS (expr); | |
4090 | ||
4091 | if (TREE_CODE (expr) == OVERLOAD) | |
4092 | { | |
4093 | if (OVL_CHAIN (expr)) | |
4094 | { | |
4095 | error ("%qE refers to a set of overloaded functions", orig_expr); | |
4096 | return error_mark_node; | |
4097 | } | |
4098 | else | |
4099 | /* An overload set containing only one function: just look | |
4100 | at that function. */ | |
4101 | expr = OVL_FUNCTION (expr); | |
4102 | } | |
4103 | ||
4104 | switch (TREE_CODE (expr)) | |
4105 | { | |
4106 | case FIELD_DECL: | |
4107 | if (DECL_C_BIT_FIELD (expr)) | |
4108 | { | |
4109 | type = DECL_BIT_FIELD_TYPE (expr); | |
4110 | break; | |
4111 | } | |
4112 | /* Fall through for fields that aren't bitfields. */ | |
4113 | ||
4114 | case FUNCTION_DECL: | |
4115 | case VAR_DECL: | |
4116 | case CONST_DECL: | |
4117 | case PARM_DECL: | |
4118 | case RESULT_DECL: | |
4119 | type = TREE_TYPE (expr); | |
4120 | break; | |
4121 | ||
4122 | case ERROR_MARK: | |
4123 | type = error_mark_node; | |
4124 | break; | |
4125 | ||
4126 | case COMPONENT_REF: | |
4127 | type = is_bitfield_expr_with_lowered_type (expr); | |
4128 | if (!type) | |
4129 | type = TREE_TYPE (TREE_OPERAND (expr, 1)); | |
4130 | break; | |
4131 | ||
4132 | case BIT_FIELD_REF: | |
4133 | gcc_unreachable (); | |
4134 | ||
4135 | case INTEGER_CST: | |
4136 | /* We can get here when the id-expression refers to an | |
4137 | enumerator. */ | |
4138 | type = TREE_TYPE (expr); | |
4139 | break; | |
4140 | ||
4141 | default: | |
4142 | gcc_assert (TYPE_P (expr) || DECL_P (expr)); | |
4143 | error ("argument to decltype must be an expression"); | |
4144 | return error_mark_node; | |
4145 | } | |
4146 | } | |
4147 | else | |
4148 | { | |
4149 | tree fndecl; | |
4150 | ||
4151 | if (TREE_CODE (expr) == CALL_EXPR | |
4152 | && (fndecl = get_callee_fndecl (expr)) | |
4153 | && (fndecl != error_mark_node)) | |
4154 | /* If e is a function call (5.2.2 [expr.call]) or an | |
4155 | invocation of an overloaded operator (parentheses around e | |
4156 | are ignored), decltype(e) is defined as the return type of | |
4157 | that function. */ | |
4158 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
4159 | else | |
4160 | { | |
4161 | type = is_bitfield_expr_with_lowered_type (expr); | |
4162 | if (type) | |
4163 | { | |
4164 | /* Bitfields are special, because their type encodes the | |
4165 | number of bits they store. If the expression referenced a | |
4166 | bitfield, TYPE now has the declared type of that | |
4167 | bitfield. */ | |
4168 | type = cp_build_qualified_type (type, | |
4169 | cp_type_quals (TREE_TYPE (expr))); | |
4170 | ||
4171 | if (real_lvalue_p (expr)) | |
4172 | type = build_reference_type (type); | |
4173 | } | |
4174 | else | |
4175 | { | |
4176 | /* Otherwise, where T is the type of e, if e is an lvalue, | |
4177 | decltype(e) is defined as T&, otherwise decltype(e) is | |
4178 | defined as T. */ | |
4179 | type = TREE_TYPE (expr); | |
4180 | if (expr == current_class_ptr) | |
4181 | /* If the expression is just "this", we want the | |
4182 | cv-unqualified pointer for the "this" type. */ | |
4183 | type = TYPE_MAIN_VARIANT (type); | |
4184 | else if (real_lvalue_p (expr)) | |
4185 | { | |
4186 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
4187 | type = build_reference_type (type); | |
4188 | } | |
4189 | else | |
4190 | type = non_reference (type); | |
4191 | } | |
4192 | } | |
4193 | } | |
4194 | ||
4195 | if (!type || type == unknown_type_node) | |
4196 | { | |
4197 | error ("type of %qE is unknown", expr); | |
4198 | return error_mark_node; | |
4199 | } | |
4200 | ||
4201 | return type; | |
4202 | } | |
cf22909c | 4203 | |
b29441ec PC |
4204 | /* Called from trait_expr_value to evaluate either __has_nothrow_assign or |
4205 | __has_nothrow_copy, depending on assign_p. */ | |
cb68ec50 PC |
4206 | |
4207 | static bool | |
b29441ec | 4208 | classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p) |
cb68ec50 | 4209 | { |
b29441ec | 4210 | tree fns; |
cb68ec50 | 4211 | |
b29441ec PC |
4212 | if (assign_p) |
4213 | { | |
4214 | int ix; | |
4215 | ix = lookup_fnfields_1 (type, ansi_assopname (NOP_EXPR)); | |
4216 | if (ix < 0) | |
cb68ec50 | 4217 | return false; |
b29441ec PC |
4218 | fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix); |
4219 | } | |
4220 | else if (TYPE_HAS_INIT_REF (type)) | |
4221 | { | |
4222 | /* If construction of the copy constructor was postponed, create | |
4223 | it now. */ | |
4224 | if (CLASSTYPE_LAZY_COPY_CTOR (type)) | |
4225 | lazily_declare_fn (sfk_copy_constructor, type); | |
4226 | fns = CLASSTYPE_CONSTRUCTORS (type); | |
cb68ec50 PC |
4227 | } |
4228 | else | |
4229 | return false; | |
4230 | ||
b29441ec PC |
4231 | for (; fns; fns = OVL_NEXT (fns)) |
4232 | if (!TREE_NOTHROW (OVL_CURRENT (fns))) | |
4233 | return false; | |
4234 | ||
cb68ec50 PC |
4235 | return true; |
4236 | } | |
4237 | ||
4238 | /* Actually evaluates the trait. */ | |
4239 | ||
4240 | static bool | |
4241 | trait_expr_value (cp_trait_kind kind, tree type1, tree type2) | |
4242 | { | |
4243 | enum tree_code type_code1; | |
4244 | tree t; | |
4245 | ||
4246 | type_code1 = TREE_CODE (type1); | |
4247 | ||
4248 | switch (kind) | |
4249 | { | |
4250 | case CPTK_HAS_NOTHROW_ASSIGN: | |
b29441ec PC |
4251 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
4252 | && (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2) | |
4253 | || (CLASS_TYPE_P (type1) | |
4254 | && classtype_has_nothrow_assign_or_copy_p (type1, | |
4255 | true)))); | |
cb68ec50 PC |
4256 | |
4257 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
4258 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE | |
4259 | && (pod_type_p (type1) | |
4260 | || (CLASS_TYPE_P (type1) | |
4261 | && TYPE_HAS_TRIVIAL_ASSIGN_REF (type1)))); | |
4262 | ||
4263 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
4264 | type1 = strip_array_types (type1); | |
4265 | return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2) | |
4266 | || (CLASS_TYPE_P (type1) | |
4267 | && (t = locate_ctor (type1, NULL)) && TREE_NOTHROW (t))); | |
4268 | ||
4269 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
4270 | type1 = strip_array_types (type1); | |
4271 | return (pod_type_p (type1) | |
4272 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1))); | |
4273 | ||
4274 | case CPTK_HAS_NOTHROW_COPY: | |
4275 | return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2) | |
4276 | || (CLASS_TYPE_P (type1) | |
b29441ec | 4277 | && classtype_has_nothrow_assign_or_copy_p (type1, false))); |
cb68ec50 PC |
4278 | |
4279 | case CPTK_HAS_TRIVIAL_COPY: | |
4280 | return (pod_type_p (type1) || type_code1 == REFERENCE_TYPE | |
4281 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_INIT_REF (type1))); | |
4282 | ||
4283 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
4284 | type1 = strip_array_types (type1); | |
4285 | return (pod_type_p (type1) | |
4286 | || (CLASS_TYPE_P (type1) | |
4287 | && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1))); | |
4288 | ||
4289 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
4290 | return (CLASS_TYPE_P (type1) | |
4291 | && (t = locate_dtor (type1, NULL)) && DECL_VIRTUAL_P (t)); | |
4292 | ||
4293 | case CPTK_IS_ABSTRACT: | |
4294 | return (CLASS_TYPE_P (type1) && CLASSTYPE_PURE_VIRTUALS (type1)); | |
4295 | ||
4296 | case CPTK_IS_BASE_OF: | |
4297 | return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
4298 | && DERIVED_FROM_P (type1, type2)); | |
4299 | ||
4300 | case CPTK_IS_CLASS: | |
4301 | return (NON_UNION_CLASS_TYPE_P (type1)); | |
4302 | ||
4303 | case CPTK_IS_CONVERTIBLE_TO: | |
4304 | /* TODO */ | |
4305 | return false; | |
4306 | ||
4307 | case CPTK_IS_EMPTY: | |
4308 | return (NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1)); | |
4309 | ||
4310 | case CPTK_IS_ENUM: | |
4311 | return (type_code1 == ENUMERAL_TYPE); | |
4312 | ||
4313 | case CPTK_IS_POD: | |
4314 | return (pod_type_p (type1)); | |
4315 | ||
4316 | case CPTK_IS_POLYMORPHIC: | |
4317 | return (CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1)); | |
4318 | ||
4319 | case CPTK_IS_UNION: | |
4320 | return (type_code1 == UNION_TYPE); | |
4321 | ||
4322 | default: | |
4323 | gcc_unreachable (); | |
4324 | return false; | |
4325 | } | |
4326 | } | |
4327 | ||
4328 | /* Process a trait expression. */ | |
4329 | ||
4330 | tree | |
4331 | finish_trait_expr (cp_trait_kind kind, tree type1, tree type2) | |
4332 | { | |
4333 | gcc_assert (kind == CPTK_HAS_NOTHROW_ASSIGN | |
4334 | || kind == CPTK_HAS_NOTHROW_CONSTRUCTOR | |
4335 | || kind == CPTK_HAS_NOTHROW_COPY | |
4336 | || kind == CPTK_HAS_TRIVIAL_ASSIGN | |
4337 | || kind == CPTK_HAS_TRIVIAL_CONSTRUCTOR | |
4338 | || kind == CPTK_HAS_TRIVIAL_COPY | |
4339 | || kind == CPTK_HAS_TRIVIAL_DESTRUCTOR | |
4340 | || kind == CPTK_HAS_VIRTUAL_DESTRUCTOR | |
4341 | || kind == CPTK_IS_ABSTRACT | |
4342 | || kind == CPTK_IS_BASE_OF | |
4343 | || kind == CPTK_IS_CLASS | |
4344 | || kind == CPTK_IS_CONVERTIBLE_TO | |
4345 | || kind == CPTK_IS_EMPTY | |
4346 | || kind == CPTK_IS_ENUM | |
4347 | || kind == CPTK_IS_POD | |
4348 | || kind == CPTK_IS_POLYMORPHIC | |
4349 | || kind == CPTK_IS_UNION); | |
4350 | ||
4351 | if (kind == CPTK_IS_CONVERTIBLE_TO) | |
4352 | { | |
4353 | sorry ("__is_convertible_to"); | |
4354 | return error_mark_node; | |
4355 | } | |
4356 | ||
4357 | if (type1 == error_mark_node | |
4358 | || ((kind == CPTK_IS_BASE_OF || kind == CPTK_IS_CONVERTIBLE_TO) | |
4359 | && type2 == error_mark_node)) | |
4360 | return error_mark_node; | |
4361 | ||
4362 | if (processing_template_decl) | |
4363 | { | |
4364 | tree trait_expr = make_node (TRAIT_EXPR); | |
4365 | TREE_TYPE (trait_expr) = boolean_type_node; | |
4366 | TRAIT_EXPR_TYPE1 (trait_expr) = type1; | |
4367 | TRAIT_EXPR_TYPE2 (trait_expr) = type2; | |
4368 | TRAIT_EXPR_KIND (trait_expr) = kind; | |
4369 | return trait_expr; | |
4370 | } | |
4371 | ||
10c1d4af PC |
4372 | complete_type (type1); |
4373 | if (type2) | |
4374 | complete_type (type2); | |
4375 | ||
cb68ec50 PC |
4376 | /* The only required diagnostic. */ |
4377 | if (kind == CPTK_IS_BASE_OF | |
4378 | && NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
4379 | && !same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
10c1d4af | 4380 | && !COMPLETE_TYPE_P (type2)) |
cb68ec50 PC |
4381 | { |
4382 | error ("incomplete type %qT not allowed", type2); | |
4383 | return error_mark_node; | |
4384 | } | |
4385 | ||
4386 | return (trait_expr_value (kind, type1, type2) | |
4387 | ? boolean_true_node : boolean_false_node); | |
4388 | } | |
4389 | ||
cf22909c | 4390 | #include "gt-cp-semantics.h" |