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8d08fdba | 1 | /* Handle initialization things in C++. |
d6a8bdff | 2 | Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
e33eba75 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, |
89fcabaf | 4 | 2011, 2012 Free Software Foundation, Inc. |
8d08fdba MS |
5 | Contributed by Michael Tiemann (tiemann@cygnus.com) |
6 | ||
f5adbb8d | 7 | This file is part of GCC. |
8d08fdba | 8 | |
f5adbb8d | 9 | GCC is free software; you can redistribute it and/or modify |
8d08fdba | 10 | it under the terms of the GNU General Public License as published by |
e77f031d | 11 | the Free Software Foundation; either version 3, or (at your option) |
8d08fdba MS |
12 | any later version. |
13 | ||
f5adbb8d | 14 | GCC is distributed in the hope that it will be useful, |
8d08fdba MS |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
e77f031d NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
8d08fdba | 22 | |
e92cc029 | 23 | /* High-level class interface. */ |
8d08fdba MS |
24 | |
25 | #include "config.h" | |
8d052bc7 | 26 | #include "system.h" |
4977bab6 ZW |
27 | #include "coretypes.h" |
28 | #include "tm.h" | |
8d08fdba | 29 | #include "tree.h" |
8d08fdba MS |
30 | #include "cp-tree.h" |
31 | #include "flags.h" | |
46e995e0 | 32 | #include "target.h" |
8d08fdba | 33 | |
2a3398e1 NS |
34 | static bool begin_init_stmts (tree *, tree *); |
35 | static tree finish_init_stmts (bool, tree, tree); | |
2282d28d | 36 | static void construct_virtual_base (tree, tree); |
5ade1ed2 DG |
37 | static void expand_aggr_init_1 (tree, tree, tree, tree, int, tsubst_flags_t); |
38 | static void expand_default_init (tree, tree, tree, tree, int, tsubst_flags_t); | |
2282d28d | 39 | static void perform_member_init (tree, tree); |
362efdc1 NN |
40 | static tree build_builtin_delete_call (tree); |
41 | static int member_init_ok_or_else (tree, tree, tree); | |
42 | static void expand_virtual_init (tree, tree); | |
2282d28d | 43 | static tree sort_mem_initializers (tree, tree); |
362efdc1 NN |
44 | static tree initializing_context (tree); |
45 | static void expand_cleanup_for_base (tree, tree); | |
362efdc1 | 46 | static tree dfs_initialize_vtbl_ptrs (tree, void *); |
362efdc1 NN |
47 | static tree build_field_list (tree, tree, int *); |
48 | static tree build_vtbl_address (tree); | |
40bb78ad | 49 | static int diagnose_uninitialized_cst_or_ref_member_1 (tree, tree, bool, bool); |
8d08fdba | 50 | |
3dbc07b6 MM |
51 | /* We are about to generate some complex initialization code. |
52 | Conceptually, it is all a single expression. However, we may want | |
53 | to include conditionals, loops, and other such statement-level | |
54 | constructs. Therefore, we build the initialization code inside a | |
55 | statement-expression. This function starts such an expression. | |
56 | STMT_EXPR_P and COMPOUND_STMT_P are filled in by this function; | |
57 | pass them back to finish_init_stmts when the expression is | |
58 | complete. */ | |
59 | ||
2a3398e1 | 60 | static bool |
362efdc1 | 61 | begin_init_stmts (tree *stmt_expr_p, tree *compound_stmt_p) |
3dbc07b6 | 62 | { |
38e01f9e | 63 | bool is_global = !building_stmt_list_p (); |
c8094d83 | 64 | |
2a3398e1 | 65 | *stmt_expr_p = begin_stmt_expr (); |
325c3691 | 66 | *compound_stmt_p = begin_compound_stmt (BCS_NO_SCOPE); |
2a3398e1 NS |
67 | |
68 | return is_global; | |
3dbc07b6 MM |
69 | } |
70 | ||
71 | /* Finish out the statement-expression begun by the previous call to | |
72 | begin_init_stmts. Returns the statement-expression itself. */ | |
73 | ||
2a3398e1 NS |
74 | static tree |
75 | finish_init_stmts (bool is_global, tree stmt_expr, tree compound_stmt) | |
c8094d83 | 76 | { |
7a3397c7 | 77 | finish_compound_stmt (compound_stmt); |
c8094d83 | 78 | |
303b7406 | 79 | stmt_expr = finish_stmt_expr (stmt_expr, true); |
3dbc07b6 | 80 | |
38e01f9e | 81 | gcc_assert (!building_stmt_list_p () == is_global); |
c8094d83 | 82 | |
3dbc07b6 MM |
83 | return stmt_expr; |
84 | } | |
85 | ||
86 | /* Constructors */ | |
87 | ||
338d90b8 NS |
88 | /* Called from initialize_vtbl_ptrs via dfs_walk. BINFO is the base |
89 | which we want to initialize the vtable pointer for, DATA is | |
90 | TREE_LIST whose TREE_VALUE is the this ptr expression. */ | |
7177d104 | 91 | |
d569399b | 92 | static tree |
362efdc1 | 93 | dfs_initialize_vtbl_ptrs (tree binfo, void *data) |
d569399b | 94 | { |
5d5a519f NS |
95 | if (!TYPE_CONTAINS_VPTR_P (BINFO_TYPE (binfo))) |
96 | return dfs_skip_bases; | |
c8094d83 | 97 | |
5d5a519f | 98 | if (!BINFO_PRIMARY_P (binfo) || BINFO_VIRTUAL_P (binfo)) |
d569399b MM |
99 | { |
100 | tree base_ptr = TREE_VALUE ((tree) data); | |
7177d104 | 101 | |
a271590a PC |
102 | base_ptr = build_base_path (PLUS_EXPR, base_ptr, binfo, /*nonnull=*/1, |
103 | tf_warning_or_error); | |
d569399b MM |
104 | |
105 | expand_virtual_init (binfo, base_ptr); | |
106 | } | |
7177d104 | 107 | |
d569399b MM |
108 | return NULL_TREE; |
109 | } | |
110 | ||
cf2e003b MM |
111 | /* Initialize all the vtable pointers in the object pointed to by |
112 | ADDR. */ | |
e92cc029 | 113 | |
8d08fdba | 114 | void |
362efdc1 | 115 | initialize_vtbl_ptrs (tree addr) |
8d08fdba | 116 | { |
cf2e003b MM |
117 | tree list; |
118 | tree type; | |
119 | ||
120 | type = TREE_TYPE (TREE_TYPE (addr)); | |
121 | list = build_tree_list (type, addr); | |
d569399b | 122 | |
bbd15aac | 123 | /* Walk through the hierarchy, initializing the vptr in each base |
1f5a253a | 124 | class. We do these in pre-order because we can't find the virtual |
3461fba7 NS |
125 | bases for a class until we've initialized the vtbl for that |
126 | class. */ | |
5d5a519f | 127 | dfs_walk_once (TYPE_BINFO (type), dfs_initialize_vtbl_ptrs, NULL, list); |
8d08fdba | 128 | } |
d569399b | 129 | |
17bbb839 MM |
130 | /* Return an expression for the zero-initialization of an object with |
131 | type T. This expression will either be a constant (in the case | |
132 | that T is a scalar), or a CONSTRUCTOR (in the case that T is an | |
b43d1bde PC |
133 | aggregate), or NULL (in the case that T does not require |
134 | initialization). In either case, the value can be used as | |
135 | DECL_INITIAL for a decl of the indicated TYPE; it is a valid static | |
136 | initializer. If NELTS is non-NULL, and TYPE is an ARRAY_TYPE, NELTS | |
137 | is the number of elements in the array. If STATIC_STORAGE_P is | |
138 | TRUE, initializers are only generated for entities for which | |
1cb8292f | 139 | zero-initialization does not simply mean filling the storage with |
e33eba75 JJ |
140 | zero bytes. FIELD_SIZE, if non-NULL, is the bit size of the field, |
141 | subfields with bit positions at or above that bit size shouldn't | |
a8c1d899 JM |
142 | be added. Note that this only works when the result is assigned |
143 | to a base COMPONENT_REF; if we only have a pointer to the base subobject, | |
144 | expand_assignment will end up clearing the full size of TYPE. */ | |
94e6e4c4 | 145 | |
e33eba75 JJ |
146 | static tree |
147 | build_zero_init_1 (tree type, tree nelts, bool static_storage_p, | |
148 | tree field_size) | |
94e6e4c4 | 149 | { |
17bbb839 MM |
150 | tree init = NULL_TREE; |
151 | ||
152 | /* [dcl.init] | |
153 | ||
0fcedd9c | 154 | To zero-initialize an object of type T means: |
17bbb839 MM |
155 | |
156 | -- if T is a scalar type, the storage is set to the value of zero | |
0cbd7506 | 157 | converted to T. |
17bbb839 MM |
158 | |
159 | -- if T is a non-union class type, the storage for each nonstatic | |
0cbd7506 | 160 | data member and each base-class subobject is zero-initialized. |
17bbb839 MM |
161 | |
162 | -- if T is a union type, the storage for its first data member is | |
0cbd7506 | 163 | zero-initialized. |
17bbb839 MM |
164 | |
165 | -- if T is an array type, the storage for each element is | |
0cbd7506 | 166 | zero-initialized. |
17bbb839 MM |
167 | |
168 | -- if T is a reference type, no initialization is performed. */ | |
94e6e4c4 | 169 | |
50bc768d | 170 | gcc_assert (nelts == NULL_TREE || TREE_CODE (nelts) == INTEGER_CST); |
7a1d37e9 | 171 | |
17bbb839 MM |
172 | if (type == error_mark_node) |
173 | ; | |
174 | else if (static_storage_p && zero_init_p (type)) | |
175 | /* In order to save space, we do not explicitly build initializers | |
176 | for items that do not need them. GCC's semantics are that | |
177 | items with static storage duration that are not otherwise | |
178 | initialized are initialized to zero. */ | |
179 | ; | |
66b1156a | 180 | else if (TYPE_PTR_OR_PTRMEM_P (type)) |
89401152 | 181 | init = convert (type, nullptr_node); |
b8063b29 | 182 | else if (SCALAR_TYPE_P (type)) |
908e152c | 183 | init = convert (type, integer_zero_node); |
17bbb839 MM |
184 | else if (CLASS_TYPE_P (type)) |
185 | { | |
186 | tree field; | |
4038c495 | 187 | VEC(constructor_elt,gc) *v = NULL; |
17bbb839 | 188 | |
17bbb839 | 189 | /* Iterate over the fields, building initializations. */ |
910ad8de | 190 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
17bbb839 MM |
191 | { |
192 | if (TREE_CODE (field) != FIELD_DECL) | |
193 | continue; | |
194 | ||
e33eba75 JJ |
195 | /* Don't add virtual bases for base classes if they are beyond |
196 | the size of the current field, that means it is present | |
197 | somewhere else in the object. */ | |
198 | if (field_size) | |
199 | { | |
200 | tree bitpos = bit_position (field); | |
201 | if (TREE_CODE (bitpos) == INTEGER_CST | |
202 | && !tree_int_cst_lt (bitpos, field_size)) | |
203 | continue; | |
204 | } | |
205 | ||
17bbb839 MM |
206 | /* Note that for class types there will be FIELD_DECLs |
207 | corresponding to base classes as well. Thus, iterating | |
208 | over TYPE_FIELDs will result in correct initialization of | |
209 | all of the subobjects. */ | |
32a11c08 | 210 | if (!static_storage_p || !zero_init_p (TREE_TYPE (field))) |
4038c495 | 211 | { |
e33eba75 JJ |
212 | tree new_field_size |
213 | = (DECL_FIELD_IS_BASE (field) | |
214 | && DECL_SIZE (field) | |
215 | && TREE_CODE (DECL_SIZE (field)) == INTEGER_CST) | |
216 | ? DECL_SIZE (field) : NULL_TREE; | |
217 | tree value = build_zero_init_1 (TREE_TYPE (field), | |
218 | /*nelts=*/NULL_TREE, | |
219 | static_storage_p, | |
220 | new_field_size); | |
b43d1bde PC |
221 | if (value) |
222 | CONSTRUCTOR_APPEND_ELT(v, field, value); | |
4038c495 | 223 | } |
17bbb839 MM |
224 | |
225 | /* For unions, only the first field is initialized. */ | |
226 | if (TREE_CODE (type) == UNION_TYPE) | |
227 | break; | |
228 | } | |
4038c495 | 229 | |
0fcedd9c JM |
230 | /* Build a constructor to contain the initializations. */ |
231 | init = build_constructor (type, v); | |
17bbb839 MM |
232 | } |
233 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
94e6e4c4 | 234 | { |
17bbb839 | 235 | tree max_index; |
4038c495 | 236 | VEC(constructor_elt,gc) *v = NULL; |
17bbb839 | 237 | |
17bbb839 | 238 | /* Iterate over the array elements, building initializations. */ |
6b6c8106 | 239 | if (nelts) |
db3927fb AH |
240 | max_index = fold_build2_loc (input_location, |
241 | MINUS_EXPR, TREE_TYPE (nelts), | |
7866705a | 242 | nelts, integer_one_node); |
6b6c8106 SB |
243 | else |
244 | max_index = array_type_nelts (type); | |
9bdb04a2 AP |
245 | |
246 | /* If we have an error_mark here, we should just return error mark | |
247 | as we don't know the size of the array yet. */ | |
248 | if (max_index == error_mark_node) | |
249 | return error_mark_node; | |
50bc768d | 250 | gcc_assert (TREE_CODE (max_index) == INTEGER_CST); |
7a1d37e9 | 251 | |
a8e6c82a MM |
252 | /* A zero-sized array, which is accepted as an extension, will |
253 | have an upper bound of -1. */ | |
254 | if (!tree_int_cst_equal (max_index, integer_minus_one_node)) | |
94763647 | 255 | { |
f32682ca | 256 | constructor_elt ce; |
4038c495 GB |
257 | |
258 | v = VEC_alloc (constructor_elt, gc, 1); | |
c8094d83 | 259 | |
b01f0d13 AP |
260 | /* If this is a one element array, we just use a regular init. */ |
261 | if (tree_int_cst_equal (size_zero_node, max_index)) | |
f32682ca | 262 | ce.index = size_zero_node; |
b01f0d13 | 263 | else |
f32682ca | 264 | ce.index = build2 (RANGE_EXPR, sizetype, size_zero_node, |
4038c495 | 265 | max_index); |
c8094d83 | 266 | |
f32682ca | 267 | ce.value = build_zero_init_1 (TREE_TYPE (type), |
e33eba75 JJ |
268 | /*nelts=*/NULL_TREE, |
269 | static_storage_p, NULL_TREE); | |
f32682ca | 270 | VEC_quick_push (constructor_elt, v, ce); |
94763647 | 271 | } |
c8094d83 | 272 | |
4038c495 GB |
273 | /* Build a constructor to contain the initializations. */ |
274 | init = build_constructor (type, v); | |
94e6e4c4 | 275 | } |
c846e8cd | 276 | else if (TREE_CODE (type) == VECTOR_TYPE) |
e8160c9a | 277 | init = build_zero_cst (type); |
94e6e4c4 | 278 | else |
8dc2b103 | 279 | gcc_assert (TREE_CODE (type) == REFERENCE_TYPE); |
94e6e4c4 | 280 | |
17bbb839 MM |
281 | /* In all cases, the initializer is a constant. */ |
282 | if (init) | |
51eed280 | 283 | TREE_CONSTANT (init) = 1; |
94e6e4c4 AO |
284 | |
285 | return init; | |
286 | } | |
287 | ||
e33eba75 JJ |
288 | /* Return an expression for the zero-initialization of an object with |
289 | type T. This expression will either be a constant (in the case | |
290 | that T is a scalar), or a CONSTRUCTOR (in the case that T is an | |
291 | aggregate), or NULL (in the case that T does not require | |
292 | initialization). In either case, the value can be used as | |
293 | DECL_INITIAL for a decl of the indicated TYPE; it is a valid static | |
294 | initializer. If NELTS is non-NULL, and TYPE is an ARRAY_TYPE, NELTS | |
295 | is the number of elements in the array. If STATIC_STORAGE_P is | |
296 | TRUE, initializers are only generated for entities for which | |
297 | zero-initialization does not simply mean filling the storage with | |
298 | zero bytes. */ | |
299 | ||
300 | tree | |
301 | build_zero_init (tree type, tree nelts, bool static_storage_p) | |
302 | { | |
303 | return build_zero_init_1 (type, nelts, static_storage_p, NULL_TREE); | |
304 | } | |
305 | ||
0fcedd9c | 306 | /* Return a suitable initializer for value-initializing an object of type |
8f540f06 | 307 | TYPE, as described in [dcl.init]. */ |
0fcedd9c | 308 | |
8f540f06 | 309 | tree |
309714d4 | 310 | build_value_init (tree type, tsubst_flags_t complain) |
0fcedd9c JM |
311 | { |
312 | /* [dcl.init] | |
313 | ||
314 | To value-initialize an object of type T means: | |
315 | ||
316 | - if T is a class type (clause 9) with a user-provided constructor | |
317 | (12.1), then the default constructor for T is called (and the | |
318 | initialization is ill-formed if T has no accessible default | |
319 | constructor); | |
320 | ||
321 | - if T is a non-union class type without a user-provided constructor, | |
322 | then every non-static data member and base-class component of T is | |
323 | value-initialized;92) | |
324 | ||
325 | - if T is an array type, then each element is value-initialized; | |
326 | ||
327 | - otherwise, the object is zero-initialized. | |
328 | ||
329 | A program that calls for default-initialization or | |
330 | value-initialization of an entity of reference type is ill-formed. | |
331 | ||
332 | 92) Value-initialization for such a class object may be implemented by | |
333 | zero-initializing the object and then calling the default | |
334 | constructor. */ | |
335 | ||
95d7bdaa | 336 | /* The AGGR_INIT_EXPR tweaking below breaks in templates. */ |
14b1860e JJ |
337 | gcc_assert (!processing_template_decl |
338 | || (SCALAR_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE)); | |
95d7bdaa | 339 | |
0fcedd9c JM |
340 | if (CLASS_TYPE_P (type)) |
341 | { | |
7b37a0c5 JM |
342 | /* Instead of the above, only consider the user-providedness of the |
343 | default constructor itself so value-initializing a class with an | |
344 | explicitly defaulted default constructor and another user-provided | |
345 | constructor works properly (c++std-core-19883). */ | |
346 | if (type_has_user_provided_default_constructor (type) | |
347 | || (!TYPE_HAS_DEFAULT_CONSTRUCTOR (type) | |
348 | && type_has_user_provided_constructor (type))) | |
844ae01d | 349 | return build_aggr_init_expr |
0fcedd9c JM |
350 | (type, |
351 | build_special_member_call (NULL_TREE, complete_ctor_identifier, | |
c166b898 | 352 | NULL, type, LOOKUP_NORMAL, |
362115a9 JM |
353 | complain), |
354 | complain); | |
7b37a0c5 | 355 | else if (TYPE_HAS_COMPLEX_DFLT (type)) |
8f540f06 JM |
356 | { |
357 | /* This is a class that needs constructing, but doesn't have | |
358 | a user-provided constructor. So we need to zero-initialize | |
359 | the object and then call the implicitly defined ctor. | |
450a927a | 360 | This will be handled in simplify_aggr_init_expr. */ |
8f540f06 JM |
361 | tree ctor = build_special_member_call |
362 | (NULL_TREE, complete_ctor_identifier, | |
309714d4 | 363 | NULL, type, LOOKUP_NORMAL, complain); |
66403b38 | 364 | ctor = build_aggr_init_expr (type, ctor, complain); |
272dc851 | 365 | if (ctor != error_mark_node) |
66403b38 | 366 | AGGR_INIT_ZERO_FIRST (ctor) = 1; |
8f540f06 JM |
367 | return ctor; |
368 | } | |
fd97a96a | 369 | } |
309714d4 | 370 | return build_value_init_noctor (type, complain); |
fd97a96a JM |
371 | } |
372 | ||
373 | /* Like build_value_init, but don't call the constructor for TYPE. Used | |
374 | for base initializers. */ | |
375 | ||
376 | tree | |
309714d4 | 377 | build_value_init_noctor (tree type, tsubst_flags_t complain) |
fd97a96a | 378 | { |
46a76d4b JM |
379 | if (!COMPLETE_TYPE_P (type)) |
380 | { | |
381 | if (complain & tf_error) | |
382 | error ("value-initialization of incomplete type %qT", type); | |
383 | return error_mark_node; | |
384 | } | |
4ddd8a74 JM |
385 | /* FIXME the class and array cases should just use digest_init once it is |
386 | SFINAE-enabled. */ | |
fd97a96a JM |
387 | if (CLASS_TYPE_P (type)) |
388 | { | |
7b37a0c5 | 389 | gcc_assert (!TYPE_HAS_COMPLEX_DFLT (type)); |
fd97a96a JM |
390 | |
391 | if (TREE_CODE (type) != UNION_TYPE) | |
0fcedd9c | 392 | { |
8f540f06 | 393 | tree field; |
0fcedd9c | 394 | VEC(constructor_elt,gc) *v = NULL; |
0fcedd9c JM |
395 | |
396 | /* Iterate over the fields, building initializations. */ | |
910ad8de | 397 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
0fcedd9c JM |
398 | { |
399 | tree ftype, value; | |
400 | ||
401 | if (TREE_CODE (field) != FIELD_DECL) | |
402 | continue; | |
403 | ||
404 | ftype = TREE_TYPE (field); | |
405 | ||
0fcedd9c JM |
406 | /* We could skip vfields and fields of types with |
407 | user-defined constructors, but I think that won't improve | |
408 | performance at all; it should be simpler in general just | |
409 | to zero out the entire object than try to only zero the | |
410 | bits that actually need it. */ | |
411 | ||
412 | /* Note that for class types there will be FIELD_DECLs | |
413 | corresponding to base classes as well. Thus, iterating | |
414 | over TYPE_FIELDs will result in correct initialization of | |
415 | all of the subobjects. */ | |
309714d4 | 416 | value = build_value_init (ftype, complain); |
0fcedd9c | 417 | |
351ccf20 JM |
418 | if (value == error_mark_node) |
419 | return error_mark_node; | |
420 | ||
0fcedd9c JM |
421 | if (value) |
422 | CONSTRUCTOR_APPEND_ELT(v, field, value); | |
423 | } | |
424 | ||
425 | /* Build a constructor to contain the zero- initializations. */ | |
8f540f06 | 426 | return build_constructor (type, v); |
0fcedd9c JM |
427 | } |
428 | } | |
429 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
430 | { | |
431 | VEC(constructor_elt,gc) *v = NULL; | |
432 | ||
433 | /* Iterate over the array elements, building initializations. */ | |
434 | tree max_index = array_type_nelts (type); | |
435 | ||
436 | /* If we have an error_mark here, we should just return error mark | |
437 | as we don't know the size of the array yet. */ | |
438 | if (max_index == error_mark_node) | |
462aa169 | 439 | { |
e2a009c7 JM |
440 | if (complain & tf_error) |
441 | error ("cannot value-initialize array of unknown bound %qT", | |
442 | type); | |
462aa169 JM |
443 | return error_mark_node; |
444 | } | |
0fcedd9c JM |
445 | gcc_assert (TREE_CODE (max_index) == INTEGER_CST); |
446 | ||
447 | /* A zero-sized array, which is accepted as an extension, will | |
448 | have an upper bound of -1. */ | |
449 | if (!tree_int_cst_equal (max_index, integer_minus_one_node)) | |
450 | { | |
f32682ca | 451 | constructor_elt ce; |
0fcedd9c JM |
452 | |
453 | v = VEC_alloc (constructor_elt, gc, 1); | |
0fcedd9c JM |
454 | |
455 | /* If this is a one element array, we just use a regular init. */ | |
456 | if (tree_int_cst_equal (size_zero_node, max_index)) | |
f32682ca | 457 | ce.index = size_zero_node; |
0fcedd9c | 458 | else |
f32682ca | 459 | ce.index = build2 (RANGE_EXPR, sizetype, size_zero_node, max_index); |
0fcedd9c | 460 | |
f32682ca DN |
461 | ce.value = build_value_init (TREE_TYPE (type), complain); |
462 | VEC_quick_push (constructor_elt, v, ce); | |
9dbd4406 | 463 | |
f32682ca | 464 | if (ce.value == error_mark_node) |
351ccf20 JM |
465 | return error_mark_node; |
466 | ||
4ddd8a74 JM |
467 | /* We shouldn't have gotten here for anything that would need |
468 | non-trivial initialization, and gimplify_init_ctor_preeval | |
469 | would need to be fixed to allow it. */ | |
f32682ca DN |
470 | gcc_assert (TREE_CODE (ce.value) != TARGET_EXPR |
471 | && TREE_CODE (ce.value) != AGGR_INIT_EXPR); | |
0fcedd9c JM |
472 | } |
473 | ||
474 | /* Build a constructor to contain the initializations. */ | |
475 | return build_constructor (type, v); | |
476 | } | |
2b8497cd JM |
477 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
478 | { | |
479 | if (complain & tf_error) | |
480 | error ("value-initialization of function type %qT", type); | |
481 | return error_mark_node; | |
482 | } | |
351ccf20 JM |
483 | else if (TREE_CODE (type) == REFERENCE_TYPE) |
484 | { | |
485 | if (complain & tf_error) | |
486 | error ("value-initialization of reference type %qT", type); | |
487 | return error_mark_node; | |
488 | } | |
0fcedd9c JM |
489 | |
490 | return build_zero_init (type, NULL_TREE, /*static_storage_p=*/false); | |
491 | } | |
492 | ||
238e471c VV |
493 | /* Initialize current class with INIT, a TREE_LIST of |
494 | arguments for a target constructor. If TREE_LIST is void_type_node, | |
495 | an empty initializer list was given. */ | |
496 | ||
497 | static void | |
498 | perform_target_ctor (tree init) | |
499 | { | |
500 | tree decl = current_class_ref; | |
501 | tree type = current_class_type; | |
502 | ||
503 | finish_expr_stmt (build_aggr_init (decl, init, LOOKUP_NORMAL, | |
504 | tf_warning_or_error)); | |
505 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) | |
506 | { | |
507 | tree expr = build_delete (type, decl, sfk_complete_destructor, | |
508 | LOOKUP_NORMAL | |
509 | |LOOKUP_NONVIRTUAL | |
510 | |LOOKUP_DESTRUCTOR, | |
511 | 0, tf_warning_or_error); | |
512 | if (expr != error_mark_node) | |
513 | finish_eh_cleanup (expr); | |
514 | } | |
515 | } | |
516 | ||
2282d28d MM |
517 | /* Initialize MEMBER, a FIELD_DECL, with INIT, a TREE_LIST of |
518 | arguments. If TREE_LIST is void_type_node, an empty initializer | |
519 | list was given; if NULL_TREE no initializer was given. */ | |
e92cc029 | 520 | |
8d08fdba | 521 | static void |
2282d28d | 522 | perform_member_init (tree member, tree init) |
8d08fdba MS |
523 | { |
524 | tree decl; | |
525 | tree type = TREE_TYPE (member); | |
2282d28d | 526 | |
0e5f8a59 JM |
527 | /* Use the non-static data member initializer if there was no |
528 | mem-initializer for this field. */ | |
529 | if (init == NULL_TREE) | |
6fd44881 | 530 | { |
2598165f | 531 | if (DECL_LANG_SPECIFIC (member) && DECL_TEMPLATE_INFO (member)) |
6fd44881 JM |
532 | /* Do deferred instantiation of the NSDMI. */ |
533 | init = (tsubst_copy_and_build | |
2598165f JM |
534 | (DECL_INITIAL (DECL_TI_TEMPLATE (member)), |
535 | DECL_TI_ARGS (member), | |
6fd44881 JM |
536 | tf_warning_or_error, member, /*function_p=*/false, |
537 | /*integral_constant_expression_p=*/false)); | |
538 | else | |
e2df21bf JM |
539 | { |
540 | init = DECL_INITIAL (member); | |
a491b7be JM |
541 | if (init && TREE_CODE (init) == DEFAULT_ARG) |
542 | { | |
543 | error ("constructor required before non-static data member " | |
544 | "for %qD has been parsed", member); | |
545 | init = NULL_TREE; | |
546 | } | |
e2df21bf JM |
547 | /* Strip redundant TARGET_EXPR so we don't need to remap it, and |
548 | so the aggregate init code below will see a CONSTRUCTOR. */ | |
549 | if (init && TREE_CODE (init) == TARGET_EXPR | |
550 | && !VOID_TYPE_P (TREE_TYPE (TARGET_EXPR_INITIAL (init)))) | |
551 | init = TARGET_EXPR_INITIAL (init); | |
552 | init = break_out_target_exprs (init); | |
553 | } | |
6fd44881 | 554 | } |
0e5f8a59 | 555 | |
a9eba00e PC |
556 | if (init == error_mark_node) |
557 | return; | |
558 | ||
2282d28d MM |
559 | /* Effective C++ rule 12 requires that all data members be |
560 | initialized. */ | |
9dbd4406 | 561 | if (warn_ecpp && init == NULL_TREE && TREE_CODE (type) != ARRAY_TYPE) |
c5d75364 MLI |
562 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), OPT_Weffc__, |
563 | "%qD should be initialized in the member initialization list", | |
564 | member); | |
2282d28d | 565 | |
2282d28d | 566 | /* Get an lvalue for the data member. */ |
50ad9642 MM |
567 | decl = build_class_member_access_expr (current_class_ref, member, |
568 | /*access_path=*/NULL_TREE, | |
5ade1ed2 DG |
569 | /*preserve_reference=*/true, |
570 | tf_warning_or_error); | |
2fbfe9b8 MS |
571 | if (decl == error_mark_node) |
572 | return; | |
573 | ||
c11e39b0 JW |
574 | if (warn_init_self && init && TREE_CODE (init) == TREE_LIST |
575 | && TREE_CHAIN (init) == NULL_TREE) | |
576 | { | |
577 | tree val = TREE_VALUE (init); | |
578 | if (TREE_CODE (val) == COMPONENT_REF && TREE_OPERAND (val, 1) == member | |
579 | && TREE_OPERAND (val, 0) == current_class_ref) | |
580 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
581 | OPT_Wuninitialized, "%qD is initialized with itself", | |
582 | member); | |
583 | } | |
584 | ||
9dbd4406 JM |
585 | if (init == void_type_node) |
586 | { | |
587 | /* mem() means value-initialization. */ | |
588 | if (TREE_CODE (type) == ARRAY_TYPE) | |
0f737a30 | 589 | { |
9c69dcea | 590 | init = build_vec_init_expr (type, init, tf_warning_or_error); |
4de2f020 | 591 | init = build2 (INIT_EXPR, type, decl, init); |
0f737a30 JJ |
592 | finish_expr_stmt (init); |
593 | } | |
9dbd4406 JM |
594 | else |
595 | { | |
48e5d119 PC |
596 | tree value = build_value_init (type, tf_warning_or_error); |
597 | if (value == error_mark_node) | |
598 | return; | |
599 | init = build2 (INIT_EXPR, type, decl, value); | |
351ccf20 | 600 | finish_expr_stmt (init); |
9dbd4406 | 601 | } |
9dbd4406 | 602 | } |
6bdb8141 JM |
603 | /* Deal with this here, as we will get confused if we try to call the |
604 | assignment op for an anonymous union. This can happen in a | |
605 | synthesized copy constructor. */ | |
9dbd4406 | 606 | else if (ANON_AGGR_TYPE_P (type)) |
6bdb8141 | 607 | { |
ff9f1a5d MM |
608 | if (init) |
609 | { | |
f293ce4b | 610 | init = build2 (INIT_EXPR, type, decl, TREE_VALUE (init)); |
ff9f1a5d MM |
611 | finish_expr_stmt (init); |
612 | } | |
6bdb8141 | 613 | } |
e2df21bf JM |
614 | else if (init |
615 | && (TREE_CODE (type) == REFERENCE_TYPE | |
616 | /* Pre-digested NSDMI. */ | |
617 | || (((TREE_CODE (init) == CONSTRUCTOR | |
618 | && TREE_TYPE (init) == type) | |
619 | /* { } mem-initializer. */ | |
620 | || (TREE_CODE (init) == TREE_LIST | |
621 | && TREE_CODE (TREE_VALUE (init)) == CONSTRUCTOR | |
622 | && CONSTRUCTOR_IS_DIRECT_INIT (TREE_VALUE (init)))) | |
623 | && (CP_AGGREGATE_TYPE_P (type) | |
624 | || is_std_init_list (type))))) | |
625 | { | |
626 | /* With references and list-initialization, we need to deal with | |
627 | extending temporary lifetimes. 12.2p5: "A temporary bound to a | |
628 | reference member in a constructorâs ctor-initializer (12.6.2) | |
629 | persists until the constructor exits." */ | |
630 | unsigned i; tree t; | |
631 | VEC(tree,gc) *cleanups = make_tree_vector (); | |
632 | if (TREE_CODE (init) == TREE_LIST) | |
633 | init = build_x_compound_expr_from_list (init, ELK_MEM_INIT, | |
634 | tf_warning_or_error); | |
635 | if (TREE_TYPE (init) != type) | |
636 | init = digest_init (type, init, tf_warning_or_error); | |
637 | if (init == error_mark_node) | |
638 | return; | |
f3fae478 JM |
639 | /* A FIELD_DECL doesn't really have a suitable lifetime, but |
640 | make_temporary_var_for_ref_to_temp will treat it as automatic and | |
641 | set_up_extended_ref_temp wants to use the decl in a warning. */ | |
2c6f7927 | 642 | init = extend_ref_init_temps (member, init, &cleanups); |
e2df21bf JM |
643 | if (TREE_CODE (type) == ARRAY_TYPE |
644 | && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (type))) | |
645 | init = build_vec_init_expr (type, init, tf_warning_or_error); | |
646 | init = build2 (INIT_EXPR, type, decl, init); | |
647 | finish_expr_stmt (init); | |
648 | FOR_EACH_VEC_ELT (tree, cleanups, i, t) | |
649 | push_cleanup (decl, t, false); | |
650 | release_tree_vector (cleanups); | |
651 | } | |
a0348261 JM |
652 | else if (type_build_ctor_call (type) |
653 | || (init && CLASS_TYPE_P (strip_array_types (type)))) | |
8d08fdba | 654 | { |
534ecb17 | 655 | if (TREE_CODE (type) == ARRAY_TYPE) |
8d08fdba | 656 | { |
534ecb17 JM |
657 | if (init) |
658 | { | |
dd56ca9f JM |
659 | if (TREE_CHAIN (init)) |
660 | init = error_mark_node; | |
661 | else | |
662 | init = TREE_VALUE (init); | |
f41349a3 JM |
663 | if (BRACE_ENCLOSED_INITIALIZER_P (init)) |
664 | init = digest_init (type, init, tf_warning_or_error); | |
534ecb17 JM |
665 | } |
666 | if (init == NULL_TREE | |
667 | || same_type_ignoring_top_level_qualifiers_p (type, | |
668 | TREE_TYPE (init))) | |
669 | { | |
9c69dcea | 670 | init = build_vec_init_expr (type, init, tf_warning_or_error); |
534ecb17 JM |
671 | init = build2 (INIT_EXPR, type, decl, init); |
672 | finish_expr_stmt (init); | |
673 | } | |
674 | else | |
675 | error ("invalid initializer for array member %q#D", member); | |
8d08fdba MS |
676 | } |
677 | else | |
b87d79e6 | 678 | { |
b8bf6ad9 JM |
679 | int flags = LOOKUP_NORMAL; |
680 | if (DECL_DEFAULTED_FN (current_function_decl)) | |
681 | flags |= LOOKUP_DEFAULTED; | |
b87d79e6 JM |
682 | if (CP_TYPE_CONST_P (type) |
683 | && init == NULL_TREE | |
6132bdd7 | 684 | && default_init_uninitialized_part (type)) |
b87d79e6 JM |
685 | /* TYPE_NEEDS_CONSTRUCTING can be set just because we have a |
686 | vtable; still give this diagnostic. */ | |
c5d75364 MLI |
687 | permerror (DECL_SOURCE_LOCATION (current_function_decl), |
688 | "uninitialized member %qD with %<const%> type %qT", | |
689 | member, type); | |
b8bf6ad9 | 690 | finish_expr_stmt (build_aggr_init (decl, init, flags, |
b87d79e6 JM |
691 | tf_warning_or_error)); |
692 | } | |
8d08fdba MS |
693 | } |
694 | else | |
695 | { | |
696 | if (init == NULL_TREE) | |
697 | { | |
31d1acec | 698 | tree core_type; |
8d08fdba | 699 | /* member traversal: note it leaves init NULL */ |
9dbd4406 | 700 | if (TREE_CODE (type) == REFERENCE_TYPE) |
c5d75364 MLI |
701 | permerror (DECL_SOURCE_LOCATION (current_function_decl), |
702 | "uninitialized reference member %qD", | |
703 | member); | |
58ec3cc5 | 704 | else if (CP_TYPE_CONST_P (type)) |
c5d75364 MLI |
705 | permerror (DECL_SOURCE_LOCATION (current_function_decl), |
706 | "uninitialized member %qD with %<const%> type %qT", | |
707 | member, type); | |
31d1acec | 708 | |
69f36ba6 JM |
709 | core_type = strip_array_types (type); |
710 | ||
012e6a1e JM |
711 | if (CLASS_TYPE_P (core_type) |
712 | && (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type) | |
713 | || CLASSTYPE_REF_FIELDS_NEED_INIT (core_type))) | |
714 | diagnose_uninitialized_cst_or_ref_member (core_type, | |
40bb78ad FC |
715 | /*using_new=*/false, |
716 | /*complain=*/true); | |
8d08fdba MS |
717 | } |
718 | else if (TREE_CODE (init) == TREE_LIST) | |
c7b62f14 NS |
719 | /* There was an explicit member initialization. Do some work |
720 | in that case. */ | |
d555b1c7 PC |
721 | init = build_x_compound_expr_from_list (init, ELK_MEM_INIT, |
722 | tf_warning_or_error); | |
8d08fdba | 723 | |
4f0aa416 | 724 | if (init) |
5ade1ed2 DG |
725 | finish_expr_stmt (cp_build_modify_expr (decl, INIT_EXPR, init, |
726 | tf_warning_or_error)); | |
8d08fdba | 727 | } |
eb66be0e | 728 | |
834c6dff | 729 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) |
b7484fbe | 730 | { |
de22184b MS |
731 | tree expr; |
732 | ||
50ad9642 MM |
733 | expr = build_class_member_access_expr (current_class_ref, member, |
734 | /*access_path=*/NULL_TREE, | |
5ade1ed2 DG |
735 | /*preserve_reference=*/false, |
736 | tf_warning_or_error); | |
3ec6bad3 | 737 | expr = build_delete (type, expr, sfk_complete_destructor, |
574cfaa4 JM |
738 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0, |
739 | tf_warning_or_error); | |
b7484fbe MS |
740 | |
741 | if (expr != error_mark_node) | |
659e5a7a | 742 | finish_eh_cleanup (expr); |
b7484fbe | 743 | } |
8d08fdba MS |
744 | } |
745 | ||
ff9f1a5d MM |
746 | /* Returns a TREE_LIST containing (as the TREE_PURPOSE of each node) all |
747 | the FIELD_DECLs on the TYPE_FIELDS list for T, in reverse order. */ | |
748 | ||
c8094d83 | 749 | static tree |
362efdc1 | 750 | build_field_list (tree t, tree list, int *uses_unions_p) |
ff9f1a5d MM |
751 | { |
752 | tree fields; | |
753 | ||
754 | /* Note whether or not T is a union. */ | |
755 | if (TREE_CODE (t) == UNION_TYPE) | |
756 | *uses_unions_p = 1; | |
757 | ||
910ad8de | 758 | for (fields = TYPE_FIELDS (t); fields; fields = DECL_CHAIN (fields)) |
ff9f1a5d | 759 | { |
535335bf JM |
760 | tree fieldtype; |
761 | ||
ff9f1a5d | 762 | /* Skip CONST_DECLs for enumeration constants and so forth. */ |
17bbb839 | 763 | if (TREE_CODE (fields) != FIELD_DECL || DECL_ARTIFICIAL (fields)) |
ff9f1a5d | 764 | continue; |
c8094d83 | 765 | |
535335bf | 766 | fieldtype = TREE_TYPE (fields); |
ff9f1a5d | 767 | /* Keep track of whether or not any fields are unions. */ |
535335bf | 768 | if (TREE_CODE (fieldtype) == UNION_TYPE) |
ff9f1a5d MM |
769 | *uses_unions_p = 1; |
770 | ||
771 | /* For an anonymous struct or union, we must recursively | |
772 | consider the fields of the anonymous type. They can be | |
773 | directly initialized from the constructor. */ | |
535335bf | 774 | if (ANON_AGGR_TYPE_P (fieldtype)) |
ff9f1a5d MM |
775 | { |
776 | /* Add this field itself. Synthesized copy constructors | |
777 | initialize the entire aggregate. */ | |
778 | list = tree_cons (fields, NULL_TREE, list); | |
779 | /* And now add the fields in the anonymous aggregate. */ | |
535335bf | 780 | list = build_field_list (fieldtype, list, uses_unions_p); |
ff9f1a5d MM |
781 | } |
782 | /* Add this field. */ | |
783 | else if (DECL_NAME (fields)) | |
784 | list = tree_cons (fields, NULL_TREE, list); | |
785 | } | |
786 | ||
787 | return list; | |
788 | } | |
789 | ||
2282d28d MM |
790 | /* The MEM_INITS are a TREE_LIST. The TREE_PURPOSE of each list gives |
791 | a FIELD_DECL or BINFO in T that needs initialization. The | |
792 | TREE_VALUE gives the initializer, or list of initializer arguments. | |
793 | ||
794 | Return a TREE_LIST containing all of the initializations required | |
795 | for T, in the order in which they should be performed. The output | |
796 | list has the same format as the input. */ | |
e92cc029 | 797 | |
8d08fdba | 798 | static tree |
2282d28d | 799 | sort_mem_initializers (tree t, tree mem_inits) |
8d08fdba | 800 | { |
ff9f1a5d | 801 | tree init; |
fa743e8c | 802 | tree base, binfo, base_binfo; |
2282d28d MM |
803 | tree sorted_inits; |
804 | tree next_subobject; | |
d4e6fecb | 805 | VEC(tree,gc) *vbases; |
2282d28d | 806 | int i; |
adc651f3 | 807 | int uses_unions_p = 0; |
ff9f1a5d | 808 | |
2282d28d MM |
809 | /* Build up a list of initializations. The TREE_PURPOSE of entry |
810 | will be the subobject (a FIELD_DECL or BINFO) to initialize. The | |
811 | TREE_VALUE will be the constructor arguments, or NULL if no | |
812 | explicit initialization was provided. */ | |
813 | sorted_inits = NULL_TREE; | |
c8094d83 | 814 | |
2282d28d | 815 | /* Process the virtual bases. */ |
9ba5ff0f NS |
816 | for (vbases = CLASSTYPE_VBASECLASSES (t), i = 0; |
817 | VEC_iterate (tree, vbases, i, base); i++) | |
58c42dc2 | 818 | sorted_inits = tree_cons (base, NULL_TREE, sorted_inits); |
c8094d83 | 819 | |
2282d28d | 820 | /* Process the direct bases. */ |
fa743e8c NS |
821 | for (binfo = TYPE_BINFO (t), i = 0; |
822 | BINFO_BASE_ITERATE (binfo, i, base_binfo); ++i) | |
823 | if (!BINFO_VIRTUAL_P (base_binfo)) | |
824 | sorted_inits = tree_cons (base_binfo, NULL_TREE, sorted_inits); | |
825 | ||
2282d28d MM |
826 | /* Process the non-static data members. */ |
827 | sorted_inits = build_field_list (t, sorted_inits, &uses_unions_p); | |
828 | /* Reverse the entire list of initializations, so that they are in | |
829 | the order that they will actually be performed. */ | |
830 | sorted_inits = nreverse (sorted_inits); | |
831 | ||
832 | /* If the user presented the initializers in an order different from | |
833 | that in which they will actually occur, we issue a warning. Keep | |
834 | track of the next subobject which can be explicitly initialized | |
835 | without issuing a warning. */ | |
836 | next_subobject = sorted_inits; | |
837 | ||
838 | /* Go through the explicit initializers, filling in TREE_PURPOSE in | |
839 | the SORTED_INITS. */ | |
840 | for (init = mem_inits; init; init = TREE_CHAIN (init)) | |
841 | { | |
842 | tree subobject; | |
843 | tree subobject_init; | |
844 | ||
845 | subobject = TREE_PURPOSE (init); | |
846 | ||
847 | /* If the explicit initializers are in sorted order, then | |
c8094d83 | 848 | SUBOBJECT will be NEXT_SUBOBJECT, or something following |
2282d28d | 849 | it. */ |
c8094d83 MS |
850 | for (subobject_init = next_subobject; |
851 | subobject_init; | |
2282d28d MM |
852 | subobject_init = TREE_CHAIN (subobject_init)) |
853 | if (TREE_PURPOSE (subobject_init) == subobject) | |
ff9f1a5d MM |
854 | break; |
855 | ||
2282d28d | 856 | /* Issue a warning if the explicit initializer order does not |
2cfe82fe | 857 | match that which will actually occur. |
0cbd7506 | 858 | ??? Are all these on the correct lines? */ |
2282d28d | 859 | if (warn_reorder && !subobject_init) |
ff9f1a5d | 860 | { |
2282d28d | 861 | if (TREE_CODE (TREE_PURPOSE (next_subobject)) == FIELD_DECL) |
b323323f | 862 | warning (OPT_Wreorder, "%q+D will be initialized after", |
dee15844 | 863 | TREE_PURPOSE (next_subobject)); |
2282d28d | 864 | else |
b323323f | 865 | warning (OPT_Wreorder, "base %qT will be initialized after", |
2282d28d MM |
866 | TREE_PURPOSE (next_subobject)); |
867 | if (TREE_CODE (subobject) == FIELD_DECL) | |
b323323f | 868 | warning (OPT_Wreorder, " %q+#D", subobject); |
2282d28d | 869 | else |
b323323f | 870 | warning (OPT_Wreorder, " base %qT", subobject); |
c5d75364 MLI |
871 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), |
872 | OPT_Wreorder, " when initialized here"); | |
ff9f1a5d | 873 | } |
b7484fbe | 874 | |
2282d28d MM |
875 | /* Look again, from the beginning of the list. */ |
876 | if (!subobject_init) | |
ff9f1a5d | 877 | { |
2282d28d MM |
878 | subobject_init = sorted_inits; |
879 | while (TREE_PURPOSE (subobject_init) != subobject) | |
880 | subobject_init = TREE_CHAIN (subobject_init); | |
ff9f1a5d | 881 | } |
c8094d83 | 882 | |
2282d28d MM |
883 | /* It is invalid to initialize the same subobject more than |
884 | once. */ | |
885 | if (TREE_VALUE (subobject_init)) | |
ff9f1a5d | 886 | { |
2282d28d | 887 | if (TREE_CODE (subobject) == FIELD_DECL) |
c5d75364 MLI |
888 | error_at (DECL_SOURCE_LOCATION (current_function_decl), |
889 | "multiple initializations given for %qD", | |
890 | subobject); | |
2282d28d | 891 | else |
c5d75364 MLI |
892 | error_at (DECL_SOURCE_LOCATION (current_function_decl), |
893 | "multiple initializations given for base %qT", | |
894 | subobject); | |
ff9f1a5d MM |
895 | } |
896 | ||
2282d28d MM |
897 | /* Record the initialization. */ |
898 | TREE_VALUE (subobject_init) = TREE_VALUE (init); | |
899 | next_subobject = subobject_init; | |
ff9f1a5d MM |
900 | } |
901 | ||
902 | /* [class.base.init] | |
b7484fbe | 903 | |
ff9f1a5d MM |
904 | If a ctor-initializer specifies more than one mem-initializer for |
905 | multiple members of the same union (including members of | |
57ece258 JM |
906 | anonymous unions), the ctor-initializer is ill-formed. |
907 | ||
908 | Here we also splice out uninitialized union members. */ | |
ff9f1a5d MM |
909 | if (uses_unions_p) |
910 | { | |
2282d28d | 911 | tree last_field = NULL_TREE; |
57ece258 JM |
912 | tree *p; |
913 | for (p = &sorted_inits; *p; ) | |
8d08fdba | 914 | { |
ff9f1a5d | 915 | tree field; |
535335bf | 916 | tree ctx; |
ff9f1a5d MM |
917 | int done; |
918 | ||
57ece258 JM |
919 | init = *p; |
920 | ||
921 | field = TREE_PURPOSE (init); | |
922 | ||
923 | /* Skip base classes. */ | |
924 | if (TREE_CODE (field) != FIELD_DECL) | |
925 | goto next; | |
926 | ||
927 | /* If this is an anonymous union with no explicit initializer, | |
928 | splice it out. */ | |
929 | if (!TREE_VALUE (init) && ANON_UNION_TYPE_P (TREE_TYPE (field))) | |
930 | goto splice; | |
931 | ||
ff9f1a5d MM |
932 | /* See if this field is a member of a union, or a member of a |
933 | structure contained in a union, etc. */ | |
535335bf JM |
934 | for (ctx = DECL_CONTEXT (field); |
935 | !same_type_p (ctx, t); | |
936 | ctx = TYPE_CONTEXT (ctx)) | |
937 | if (TREE_CODE (ctx) == UNION_TYPE) | |
ff9f1a5d MM |
938 | break; |
939 | /* If this field is not a member of a union, skip it. */ | |
535335bf | 940 | if (TREE_CODE (ctx) != UNION_TYPE) |
57ece258 JM |
941 | goto next; |
942 | ||
943 | /* If this union member has no explicit initializer, splice | |
944 | it out. */ | |
945 | if (!TREE_VALUE (init)) | |
946 | goto splice; | |
8d08fdba | 947 | |
ff9f1a5d MM |
948 | /* It's only an error if we have two initializers for the same |
949 | union type. */ | |
950 | if (!last_field) | |
6bdb8141 | 951 | { |
ff9f1a5d | 952 | last_field = field; |
57ece258 | 953 | goto next; |
6bdb8141 | 954 | } |
8d08fdba | 955 | |
ff9f1a5d MM |
956 | /* See if LAST_FIELD and the field initialized by INIT are |
957 | members of the same union. If so, there's a problem, | |
958 | unless they're actually members of the same structure | |
959 | which is itself a member of a union. For example, given: | |
8d08fdba | 960 | |
ff9f1a5d MM |
961 | union { struct { int i; int j; }; }; |
962 | ||
963 | initializing both `i' and `j' makes sense. */ | |
535335bf | 964 | ctx = DECL_CONTEXT (field); |
ff9f1a5d MM |
965 | done = 0; |
966 | do | |
8d08fdba | 967 | { |
535335bf | 968 | tree last_ctx; |
ff9f1a5d | 969 | |
535335bf | 970 | last_ctx = DECL_CONTEXT (last_field); |
ff9f1a5d | 971 | while (1) |
00595019 | 972 | { |
535335bf | 973 | if (same_type_p (last_ctx, ctx)) |
00595019 | 974 | { |
535335bf | 975 | if (TREE_CODE (ctx) == UNION_TYPE) |
c5d75364 MLI |
976 | error_at (DECL_SOURCE_LOCATION (current_function_decl), |
977 | "initializations for multiple members of %qT", | |
535335bf | 978 | last_ctx); |
ff9f1a5d MM |
979 | done = 1; |
980 | break; | |
00595019 | 981 | } |
8d08fdba | 982 | |
535335bf | 983 | if (same_type_p (last_ctx, t)) |
ff9f1a5d | 984 | break; |
8d08fdba | 985 | |
535335bf | 986 | last_ctx = TYPE_CONTEXT (last_ctx); |
ff9f1a5d | 987 | } |
c8094d83 | 988 | |
ff9f1a5d MM |
989 | /* If we've reached the outermost class, then we're |
990 | done. */ | |
535335bf | 991 | if (same_type_p (ctx, t)) |
ff9f1a5d | 992 | break; |
8d08fdba | 993 | |
535335bf | 994 | ctx = TYPE_CONTEXT (ctx); |
8d08fdba | 995 | } |
ff9f1a5d MM |
996 | while (!done); |
997 | ||
998 | last_field = field; | |
57ece258 JM |
999 | |
1000 | next: | |
1001 | p = &TREE_CHAIN (*p); | |
1002 | continue; | |
1003 | splice: | |
1004 | *p = TREE_CHAIN (*p); | |
1005 | continue; | |
b7484fbe MS |
1006 | } |
1007 | } | |
8d08fdba | 1008 | |
2282d28d | 1009 | return sorted_inits; |
b7484fbe MS |
1010 | } |
1011 | ||
2282d28d MM |
1012 | /* Initialize all bases and members of CURRENT_CLASS_TYPE. MEM_INITS |
1013 | is a TREE_LIST giving the explicit mem-initializer-list for the | |
1014 | constructor. The TREE_PURPOSE of each entry is a subobject (a | |
1015 | FIELD_DECL or a BINFO) of the CURRENT_CLASS_TYPE. The TREE_VALUE | |
1016 | is a TREE_LIST giving the arguments to the constructor or | |
1017 | void_type_node for an empty list of arguments. */ | |
a9aedbc2 | 1018 | |
3dbc07b6 | 1019 | void |
2282d28d | 1020 | emit_mem_initializers (tree mem_inits) |
8d08fdba | 1021 | { |
b8bf6ad9 JM |
1022 | int flags = LOOKUP_NORMAL; |
1023 | ||
72e4661a PC |
1024 | /* We will already have issued an error message about the fact that |
1025 | the type is incomplete. */ | |
1026 | if (!COMPLETE_TYPE_P (current_class_type)) | |
1027 | return; | |
c8094d83 | 1028 | |
238e471c VV |
1029 | if (mem_inits |
1030 | && TYPE_P (TREE_PURPOSE (mem_inits)) | |
1031 | && same_type_p (TREE_PURPOSE (mem_inits), current_class_type)) | |
1032 | { | |
1033 | /* Delegating constructor. */ | |
1034 | gcc_assert (TREE_CHAIN (mem_inits) == NULL_TREE); | |
1035 | perform_target_ctor (TREE_VALUE (mem_inits)); | |
1036 | return; | |
1037 | } | |
1038 | ||
b8bf6ad9 JM |
1039 | if (DECL_DEFAULTED_FN (current_function_decl)) |
1040 | flags |= LOOKUP_DEFAULTED; | |
1041 | ||
2282d28d MM |
1042 | /* Sort the mem-initializers into the order in which the |
1043 | initializations should be performed. */ | |
1044 | mem_inits = sort_mem_initializers (current_class_type, mem_inits); | |
8d08fdba | 1045 | |
1f5a253a | 1046 | in_base_initializer = 1; |
c8094d83 | 1047 | |
2282d28d | 1048 | /* Initialize base classes. */ |
c8094d83 | 1049 | while (mem_inits |
2282d28d | 1050 | && TREE_CODE (TREE_PURPOSE (mem_inits)) != FIELD_DECL) |
8d08fdba | 1051 | { |
2282d28d MM |
1052 | tree subobject = TREE_PURPOSE (mem_inits); |
1053 | tree arguments = TREE_VALUE (mem_inits); | |
1054 | ||
91ea6df3 GDR |
1055 | if (arguments == NULL_TREE) |
1056 | { | |
1057 | /* If these initializations are taking place in a copy constructor, | |
1058 | the base class should probably be explicitly initialized if there | |
1059 | is a user-defined constructor in the base class (other than the | |
1060 | default constructor, which will be called anyway). */ | |
1061 | if (extra_warnings | |
1062 | && DECL_COPY_CONSTRUCTOR_P (current_function_decl) | |
1063 | && type_has_user_nondefault_constructor (BINFO_TYPE (subobject))) | |
1064 | warning_at (DECL_SOURCE_LOCATION (current_function_decl), | |
1065 | OPT_Wextra, "base class %q#T should be explicitly " | |
1066 | "initialized in the copy constructor", | |
1067 | BINFO_TYPE (subobject)); | |
91ea6df3 | 1068 | } |
2282d28d | 1069 | |
2282d28d | 1070 | /* Initialize the base. */ |
809e3e7f | 1071 | if (BINFO_VIRTUAL_P (subobject)) |
2282d28d MM |
1072 | construct_virtual_base (subobject, arguments); |
1073 | else | |
b7484fbe | 1074 | { |
2282d28d | 1075 | tree base_addr; |
c8094d83 | 1076 | |
2282d28d | 1077 | base_addr = build_base_path (PLUS_EXPR, current_class_ptr, |
a271590a | 1078 | subobject, 1, tf_warning_or_error); |
2282d28d | 1079 | expand_aggr_init_1 (subobject, NULL_TREE, |
dd865ef6 | 1080 | cp_build_indirect_ref (base_addr, RO_NULL, |
5ade1ed2 | 1081 | tf_warning_or_error), |
2282d28d | 1082 | arguments, |
b8bf6ad9 | 1083 | flags, |
5ade1ed2 | 1084 | tf_warning_or_error); |
2282d28d | 1085 | expand_cleanup_for_base (subobject, NULL_TREE); |
8d08fdba | 1086 | } |
8d08fdba | 1087 | |
2282d28d | 1088 | mem_inits = TREE_CHAIN (mem_inits); |
8d08fdba | 1089 | } |
1f5a253a | 1090 | in_base_initializer = 0; |
8d08fdba | 1091 | |
2282d28d | 1092 | /* Initialize the vptrs. */ |
cf2e003b | 1093 | initialize_vtbl_ptrs (current_class_ptr); |
c8094d83 | 1094 | |
2282d28d MM |
1095 | /* Initialize the data members. */ |
1096 | while (mem_inits) | |
8d08fdba | 1097 | { |
2282d28d MM |
1098 | perform_member_init (TREE_PURPOSE (mem_inits), |
1099 | TREE_VALUE (mem_inits)); | |
1100 | mem_inits = TREE_CHAIN (mem_inits); | |
b7484fbe | 1101 | } |
8d08fdba MS |
1102 | } |
1103 | ||
3ec6bad3 MM |
1104 | /* Returns the address of the vtable (i.e., the value that should be |
1105 | assigned to the vptr) for BINFO. */ | |
1106 | ||
1107 | static tree | |
362efdc1 | 1108 | build_vtbl_address (tree binfo) |
3ec6bad3 | 1109 | { |
9965d119 | 1110 | tree binfo_for = binfo; |
3ec6bad3 MM |
1111 | tree vtbl; |
1112 | ||
fc6633e0 | 1113 | if (BINFO_VPTR_INDEX (binfo) && BINFO_VIRTUAL_P (binfo)) |
9965d119 NS |
1114 | /* If this is a virtual primary base, then the vtable we want to store |
1115 | is that for the base this is being used as the primary base of. We | |
1116 | can't simply skip the initialization, because we may be expanding the | |
1117 | inits of a subobject constructor where the virtual base layout | |
1118 | can be different. */ | |
fc6633e0 NS |
1119 | while (BINFO_PRIMARY_P (binfo_for)) |
1120 | binfo_for = BINFO_INHERITANCE_CHAIN (binfo_for); | |
9965d119 | 1121 | |
3ec6bad3 MM |
1122 | /* Figure out what vtable BINFO's vtable is based on, and mark it as |
1123 | used. */ | |
9965d119 | 1124 | vtbl = get_vtbl_decl_for_binfo (binfo_for); |
3ec6bad3 MM |
1125 | TREE_USED (vtbl) = 1; |
1126 | ||
1127 | /* Now compute the address to use when initializing the vptr. */ | |
6de9cd9a | 1128 | vtbl = unshare_expr (BINFO_VTABLE (binfo_for)); |
3ec6bad3 | 1129 | if (TREE_CODE (vtbl) == VAR_DECL) |
6de9cd9a | 1130 | vtbl = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (vtbl)), vtbl); |
3ec6bad3 MM |
1131 | |
1132 | return vtbl; | |
1133 | } | |
1134 | ||
8d08fdba MS |
1135 | /* This code sets up the virtual function tables appropriate for |
1136 | the pointer DECL. It is a one-ply initialization. | |
1137 | ||
1138 | BINFO is the exact type that DECL is supposed to be. In | |
1139 | multiple inheritance, this might mean "C's A" if C : A, B. */ | |
e92cc029 | 1140 | |
8926095f | 1141 | static void |
362efdc1 | 1142 | expand_virtual_init (tree binfo, tree decl) |
8d08fdba | 1143 | { |
8d08fdba | 1144 | tree vtbl, vtbl_ptr; |
3ec6bad3 | 1145 | tree vtt_index; |
8d08fdba | 1146 | |
3ec6bad3 MM |
1147 | /* Compute the initializer for vptr. */ |
1148 | vtbl = build_vtbl_address (binfo); | |
1149 | ||
3461fba7 NS |
1150 | /* We may get this vptr from a VTT, if this is a subobject |
1151 | constructor or subobject destructor. */ | |
3ec6bad3 MM |
1152 | vtt_index = BINFO_VPTR_INDEX (binfo); |
1153 | if (vtt_index) | |
1154 | { | |
1155 | tree vtbl2; | |
1156 | tree vtt_parm; | |
1157 | ||
1158 | /* Compute the value to use, when there's a VTT. */ | |
e0fff4b3 | 1159 | vtt_parm = current_vtt_parm; |
5d49b6a7 | 1160 | vtbl2 = fold_build_pointer_plus (vtt_parm, vtt_index); |
dd865ef6 | 1161 | vtbl2 = cp_build_indirect_ref (vtbl2, RO_NULL, tf_warning_or_error); |
6de9cd9a | 1162 | vtbl2 = convert (TREE_TYPE (vtbl), vtbl2); |
3ec6bad3 MM |
1163 | |
1164 | /* The actual initializer is the VTT value only in the subobject | |
1165 | constructor. In maybe_clone_body we'll substitute NULL for | |
1166 | the vtt_parm in the case of the non-subobject constructor. */ | |
c8094d83 MS |
1167 | vtbl = build3 (COND_EXPR, |
1168 | TREE_TYPE (vtbl), | |
f293ce4b RS |
1169 | build2 (EQ_EXPR, boolean_type_node, |
1170 | current_in_charge_parm, integer_zero_node), | |
c8094d83 | 1171 | vtbl2, |
f293ce4b | 1172 | vtbl); |
3ec6bad3 | 1173 | } |
70ae3201 MM |
1174 | |
1175 | /* Compute the location of the vtpr. */ | |
dd865ef6 | 1176 | vtbl_ptr = build_vfield_ref (cp_build_indirect_ref (decl, RO_NULL, |
5ade1ed2 | 1177 | tf_warning_or_error), |
338d90b8 | 1178 | TREE_TYPE (binfo)); |
50bc768d | 1179 | gcc_assert (vtbl_ptr != error_mark_node); |
8d08fdba | 1180 | |
70ae3201 | 1181 | /* Assign the vtable to the vptr. */ |
4b978f96 | 1182 | vtbl = convert_force (TREE_TYPE (vtbl_ptr), vtbl, 0, tf_warning_or_error); |
5ade1ed2 DG |
1183 | finish_expr_stmt (cp_build_modify_expr (vtbl_ptr, NOP_EXPR, vtbl, |
1184 | tf_warning_or_error)); | |
8d08fdba MS |
1185 | } |
1186 | ||
f33e32a8 MM |
1187 | /* If an exception is thrown in a constructor, those base classes already |
1188 | constructed must be destroyed. This function creates the cleanup | |
0b8a1e58 | 1189 | for BINFO, which has just been constructed. If FLAG is non-NULL, |
838dfd8a | 1190 | it is a DECL which is nonzero when this base needs to be |
0b8a1e58 | 1191 | destroyed. */ |
f33e32a8 MM |
1192 | |
1193 | static void | |
362efdc1 | 1194 | expand_cleanup_for_base (tree binfo, tree flag) |
f33e32a8 MM |
1195 | { |
1196 | tree expr; | |
1197 | ||
834c6dff | 1198 | if (TYPE_HAS_TRIVIAL_DESTRUCTOR (BINFO_TYPE (binfo))) |
f33e32a8 MM |
1199 | return; |
1200 | ||
0b8a1e58 | 1201 | /* Call the destructor. */ |
c8094d83 | 1202 | expr = build_special_member_call (current_class_ref, |
4ba126e4 | 1203 | base_dtor_identifier, |
c166b898 | 1204 | NULL, |
4ba126e4 | 1205 | binfo, |
5ade1ed2 DG |
1206 | LOOKUP_NORMAL | LOOKUP_NONVIRTUAL, |
1207 | tf_warning_or_error); | |
0b8a1e58 | 1208 | if (flag) |
db3927fb AH |
1209 | expr = fold_build3_loc (input_location, |
1210 | COND_EXPR, void_type_node, | |
ba47d38d | 1211 | c_common_truthvalue_conversion (input_location, flag), |
7866705a | 1212 | expr, integer_zero_node); |
0b8a1e58 | 1213 | |
659e5a7a | 1214 | finish_eh_cleanup (expr); |
f33e32a8 MM |
1215 | } |
1216 | ||
2282d28d MM |
1217 | /* Construct the virtual base-class VBASE passing the ARGUMENTS to its |
1218 | constructor. */ | |
e92cc029 | 1219 | |
8d08fdba | 1220 | static void |
2282d28d | 1221 | construct_virtual_base (tree vbase, tree arguments) |
8d08fdba | 1222 | { |
2282d28d | 1223 | tree inner_if_stmt; |
2282d28d | 1224 | tree exp; |
c8094d83 | 1225 | tree flag; |
2282d28d MM |
1226 | |
1227 | /* If there are virtual base classes with destructors, we need to | |
1228 | emit cleanups to destroy them if an exception is thrown during | |
1229 | the construction process. These exception regions (i.e., the | |
1230 | period during which the cleanups must occur) begin from the time | |
1231 | the construction is complete to the end of the function. If we | |
1232 | create a conditional block in which to initialize the | |
1233 | base-classes, then the cleanup region for the virtual base begins | |
1234 | inside a block, and ends outside of that block. This situation | |
1235 | confuses the sjlj exception-handling code. Therefore, we do not | |
1236 | create a single conditional block, but one for each | |
1237 | initialization. (That way the cleanup regions always begin | |
3b426391 | 1238 | in the outer block.) We trust the back end to figure out |
2282d28d MM |
1239 | that the FLAG will not change across initializations, and |
1240 | avoid doing multiple tests. */ | |
910ad8de | 1241 | flag = DECL_CHAIN (DECL_ARGUMENTS (current_function_decl)); |
2282d28d MM |
1242 | inner_if_stmt = begin_if_stmt (); |
1243 | finish_if_stmt_cond (flag, inner_if_stmt); | |
2282d28d MM |
1244 | |
1245 | /* Compute the location of the virtual base. If we're | |
1246 | constructing virtual bases, then we must be the most derived | |
1247 | class. Therefore, we don't have to look up the virtual base; | |
1248 | we already know where it is. */ | |
22ed7e5f MM |
1249 | exp = convert_to_base_statically (current_class_ref, vbase); |
1250 | ||
c8094d83 | 1251 | expand_aggr_init_1 (vbase, current_class_ref, exp, arguments, |
4b978f96 | 1252 | 0, tf_warning_or_error); |
2282d28d | 1253 | finish_then_clause (inner_if_stmt); |
325c3691 | 1254 | finish_if_stmt (inner_if_stmt); |
2282d28d MM |
1255 | |
1256 | expand_cleanup_for_base (vbase, flag); | |
8d08fdba MS |
1257 | } |
1258 | ||
2ee887f2 | 1259 | /* Find the context in which this FIELD can be initialized. */ |
e92cc029 | 1260 | |
2ee887f2 | 1261 | static tree |
362efdc1 | 1262 | initializing_context (tree field) |
2ee887f2 MS |
1263 | { |
1264 | tree t = DECL_CONTEXT (field); | |
1265 | ||
1266 | /* Anonymous union members can be initialized in the first enclosing | |
1267 | non-anonymous union context. */ | |
6bdb8141 | 1268 | while (t && ANON_AGGR_TYPE_P (t)) |
2ee887f2 MS |
1269 | t = TYPE_CONTEXT (t); |
1270 | return t; | |
1271 | } | |
1272 | ||
8d08fdba MS |
1273 | /* Function to give error message if member initialization specification |
1274 | is erroneous. FIELD is the member we decided to initialize. | |
1275 | TYPE is the type for which the initialization is being performed. | |
72b7eeff | 1276 | FIELD must be a member of TYPE. |
c8094d83 | 1277 | |
8d08fdba MS |
1278 | MEMBER_NAME is the name of the member. */ |
1279 | ||
1280 | static int | |
362efdc1 | 1281 | member_init_ok_or_else (tree field, tree type, tree member_name) |
8d08fdba MS |
1282 | { |
1283 | if (field == error_mark_node) | |
1284 | return 0; | |
a723baf1 | 1285 | if (!field) |
8d08fdba | 1286 | { |
15a7ee29 | 1287 | error ("class %qT does not have any field named %qD", type, |
a723baf1 | 1288 | member_name); |
8d08fdba MS |
1289 | return 0; |
1290 | } | |
a723baf1 | 1291 | if (TREE_CODE (field) == VAR_DECL) |
b7484fbe | 1292 | { |
15a7ee29 | 1293 | error ("%q#D is a static data member; it can only be " |
a723baf1 MM |
1294 | "initialized at its definition", |
1295 | field); | |
1296 | return 0; | |
1297 | } | |
1298 | if (TREE_CODE (field) != FIELD_DECL) | |
1299 | { | |
15a7ee29 | 1300 | error ("%q#D is not a non-static data member of %qT", |
a723baf1 MM |
1301 | field, type); |
1302 | return 0; | |
1303 | } | |
1304 | if (initializing_context (field) != type) | |
1305 | { | |
15a7ee29 | 1306 | error ("class %qT does not have any field named %qD", type, |
a723baf1 | 1307 | member_name); |
b7484fbe MS |
1308 | return 0; |
1309 | } | |
1310 | ||
8d08fdba MS |
1311 | return 1; |
1312 | } | |
1313 | ||
2282d28d MM |
1314 | /* NAME is a FIELD_DECL, an IDENTIFIER_NODE which names a field, or it |
1315 | is a _TYPE node or TYPE_DECL which names a base for that type. | |
1f5a253a NS |
1316 | Check the validity of NAME, and return either the base _TYPE, base |
1317 | binfo, or the FIELD_DECL of the member. If NAME is invalid, return | |
2282d28d | 1318 | NULL_TREE and issue a diagnostic. |
8d08fdba | 1319 | |
36a68fe7 NS |
1320 | An old style unnamed direct single base construction is permitted, |
1321 | where NAME is NULL. */ | |
8d08fdba | 1322 | |
fd74ca0b | 1323 | tree |
1f5a253a | 1324 | expand_member_init (tree name) |
8d08fdba | 1325 | { |
2282d28d MM |
1326 | tree basetype; |
1327 | tree field; | |
8d08fdba | 1328 | |
2282d28d | 1329 | if (!current_class_ref) |
fd74ca0b | 1330 | return NULL_TREE; |
8d08fdba | 1331 | |
36a68fe7 | 1332 | if (!name) |
90418208 | 1333 | { |
36a68fe7 NS |
1334 | /* This is an obsolete unnamed base class initializer. The |
1335 | parser will already have warned about its use. */ | |
604a3205 | 1336 | switch (BINFO_N_BASE_BINFOS (TYPE_BINFO (current_class_type))) |
36a68fe7 NS |
1337 | { |
1338 | case 0: | |
15a7ee29 | 1339 | error ("unnamed initializer for %qT, which has no base classes", |
2282d28d | 1340 | current_class_type); |
36a68fe7 NS |
1341 | return NULL_TREE; |
1342 | case 1: | |
604a3205 NS |
1343 | basetype = BINFO_TYPE |
1344 | (BINFO_BASE_BINFO (TYPE_BINFO (current_class_type), 0)); | |
36a68fe7 NS |
1345 | break; |
1346 | default: | |
15a7ee29 | 1347 | error ("unnamed initializer for %qT, which uses multiple inheritance", |
2282d28d | 1348 | current_class_type); |
36a68fe7 NS |
1349 | return NULL_TREE; |
1350 | } | |
90418208 | 1351 | } |
36a68fe7 | 1352 | else if (TYPE_P (name)) |
be99da77 | 1353 | { |
a82d6da5 | 1354 | basetype = TYPE_MAIN_VARIANT (name); |
36a68fe7 | 1355 | name = TYPE_NAME (name); |
be99da77 | 1356 | } |
36a68fe7 NS |
1357 | else if (TREE_CODE (name) == TYPE_DECL) |
1358 | basetype = TYPE_MAIN_VARIANT (TREE_TYPE (name)); | |
2282d28d MM |
1359 | else |
1360 | basetype = NULL_TREE; | |
8d08fdba | 1361 | |
36a68fe7 | 1362 | if (basetype) |
41efda8f | 1363 | { |
d9148cf4 MM |
1364 | tree class_binfo; |
1365 | tree direct_binfo; | |
1366 | tree virtual_binfo; | |
1367 | int i; | |
2282d28d | 1368 | |
238e471c VV |
1369 | if (same_type_p (basetype, current_class_type) |
1370 | || current_template_parms) | |
1371 | return basetype; | |
2282d28d | 1372 | |
d9148cf4 MM |
1373 | class_binfo = TYPE_BINFO (current_class_type); |
1374 | direct_binfo = NULL_TREE; | |
1375 | virtual_binfo = NULL_TREE; | |
1376 | ||
1377 | /* Look for a direct base. */ | |
fa743e8c | 1378 | for (i = 0; BINFO_BASE_ITERATE (class_binfo, i, direct_binfo); ++i) |
539ed333 | 1379 | if (SAME_BINFO_TYPE_P (BINFO_TYPE (direct_binfo), basetype)) |
fa743e8c NS |
1380 | break; |
1381 | ||
d9148cf4 MM |
1382 | /* Look for a virtual base -- unless the direct base is itself |
1383 | virtual. */ | |
809e3e7f | 1384 | if (!direct_binfo || !BINFO_VIRTUAL_P (direct_binfo)) |
58c42dc2 | 1385 | virtual_binfo = binfo_for_vbase (basetype, current_class_type); |
d9148cf4 MM |
1386 | |
1387 | /* [class.base.init] | |
c8094d83 | 1388 | |
0cbd7506 | 1389 | If a mem-initializer-id is ambiguous because it designates |
d9148cf4 MM |
1390 | both a direct non-virtual base class and an inherited virtual |
1391 | base class, the mem-initializer is ill-formed. */ | |
1392 | if (direct_binfo && virtual_binfo) | |
1393 | { | |
15a7ee29 | 1394 | error ("%qD is both a direct base and an indirect virtual base", |
d9148cf4 MM |
1395 | basetype); |
1396 | return NULL_TREE; | |
1397 | } | |
1398 | ||
1399 | if (!direct_binfo && !virtual_binfo) | |
8d08fdba | 1400 | { |
5775a06a | 1401 | if (CLASSTYPE_VBASECLASSES (current_class_type)) |
c3115fd2 MM |
1402 | error ("type %qT is not a direct or virtual base of %qT", |
1403 | basetype, current_class_type); | |
41efda8f | 1404 | else |
c3115fd2 MM |
1405 | error ("type %qT is not a direct base of %qT", |
1406 | basetype, current_class_type); | |
fd74ca0b | 1407 | return NULL_TREE; |
41efda8f | 1408 | } |
d9148cf4 MM |
1409 | |
1410 | return direct_binfo ? direct_binfo : virtual_binfo; | |
41efda8f MM |
1411 | } |
1412 | else | |
1413 | { | |
2282d28d | 1414 | if (TREE_CODE (name) == IDENTIFIER_NODE) |
86ac0575 | 1415 | field = lookup_field (current_class_type, name, 1, false); |
2282d28d MM |
1416 | else |
1417 | field = name; | |
8d08fdba | 1418 | |
2282d28d | 1419 | if (member_init_ok_or_else (field, current_class_type, name)) |
1f5a253a | 1420 | return field; |
41efda8f | 1421 | } |
fd74ca0b | 1422 | |
2282d28d | 1423 | return NULL_TREE; |
8d08fdba MS |
1424 | } |
1425 | ||
1426 | /* This is like `expand_member_init', only it stores one aggregate | |
1427 | value into another. | |
1428 | ||
1429 | INIT comes in two flavors: it is either a value which | |
1430 | is to be stored in EXP, or it is a parameter list | |
1431 | to go to a constructor, which will operate on EXP. | |
f30432d7 MS |
1432 | If INIT is not a parameter list for a constructor, then set |
1433 | LOOKUP_ONLYCONVERTING. | |
6060a796 MS |
1434 | If FLAGS is LOOKUP_ONLYCONVERTING then it is the = init form of |
1435 | the initializer, if FLAGS is 0, then it is the (init) form. | |
8d08fdba | 1436 | If `init' is a CONSTRUCTOR, then we emit a warning message, |
59be0cdd | 1437 | explaining that such initializations are invalid. |
8d08fdba | 1438 | |
8d08fdba MS |
1439 | If INIT resolves to a CALL_EXPR which happens to return |
1440 | something of the type we are looking for, then we know | |
1441 | that we can safely use that call to perform the | |
1442 | initialization. | |
1443 | ||
1444 | The virtual function table pointer cannot be set up here, because | |
1445 | we do not really know its type. | |
1446 | ||
8d08fdba MS |
1447 | This never calls operator=(). |
1448 | ||
1449 | When initializing, nothing is CONST. | |
1450 | ||
1451 | A default copy constructor may have to be used to perform the | |
1452 | initialization. | |
1453 | ||
1454 | A constructor or a conversion operator may have to be used to | |
e92cc029 | 1455 | perform the initialization, but not both, as it would be ambiguous. */ |
8d08fdba | 1456 | |
f1dedc31 | 1457 | tree |
5ade1ed2 | 1458 | build_aggr_init (tree exp, tree init, int flags, tsubst_flags_t complain) |
8d08fdba | 1459 | { |
f1dedc31 MM |
1460 | tree stmt_expr; |
1461 | tree compound_stmt; | |
1462 | int destroy_temps; | |
8d08fdba MS |
1463 | tree type = TREE_TYPE (exp); |
1464 | int was_const = TREE_READONLY (exp); | |
f30432d7 | 1465 | int was_volatile = TREE_THIS_VOLATILE (exp); |
2a3398e1 | 1466 | int is_global; |
8d08fdba MS |
1467 | |
1468 | if (init == error_mark_node) | |
f1dedc31 | 1469 | return error_mark_node; |
8d08fdba MS |
1470 | |
1471 | TREE_READONLY (exp) = 0; | |
f30432d7 MS |
1472 | TREE_THIS_VOLATILE (exp) = 0; |
1473 | ||
611d6f76 | 1474 | if (init && TREE_CODE (init) != TREE_LIST |
e08cc018 JM |
1475 | && !(TREE_CODE (init) == TARGET_EXPR |
1476 | && TARGET_EXPR_DIRECT_INIT_P (init)) | |
611d6f76 JM |
1477 | && !(BRACE_ENCLOSED_INITIALIZER_P (init) |
1478 | && CONSTRUCTOR_IS_DIRECT_INIT (init))) | |
f30432d7 | 1479 | flags |= LOOKUP_ONLYCONVERTING; |
8d08fdba MS |
1480 | |
1481 | if (TREE_CODE (type) == ARRAY_TYPE) | |
1482 | { | |
671cb993 MM |
1483 | tree itype; |
1484 | ||
92a62aad MM |
1485 | /* An array may not be initialized use the parenthesized |
1486 | initialization form -- unless the initializer is "()". */ | |
1487 | if (init && TREE_CODE (init) == TREE_LIST) | |
8d08fdba | 1488 | { |
5ade1ed2 DG |
1489 | if (complain & tf_error) |
1490 | error ("bad array initializer"); | |
f1dedc31 | 1491 | return error_mark_node; |
8d08fdba | 1492 | } |
92a62aad MM |
1493 | /* Must arrange to initialize each element of EXP |
1494 | from elements of INIT. */ | |
671cb993 | 1495 | itype = init ? TREE_TYPE (init) : NULL_TREE; |
36c37128 JM |
1496 | if (cv_qualified_p (type)) |
1497 | TREE_TYPE (exp) = cv_unqualified (type); | |
1498 | if (itype && cv_qualified_p (itype)) | |
1499 | TREE_TYPE (init) = cv_unqualified (itype); | |
a48cccea | 1500 | stmt_expr = build_vec_init (exp, NULL_TREE, init, |
844ae01d | 1501 | /*explicit_value_init_p=*/false, |
36c37128 | 1502 | itype && same_type_p (TREE_TYPE (init), |
5ade1ed2 DG |
1503 | TREE_TYPE (exp)), |
1504 | complain); | |
8d08fdba | 1505 | TREE_READONLY (exp) = was_const; |
f30432d7 | 1506 | TREE_THIS_VOLATILE (exp) = was_volatile; |
8d08fdba | 1507 | TREE_TYPE (exp) = type; |
f376e137 MS |
1508 | if (init) |
1509 | TREE_TYPE (init) = itype; | |
f1dedc31 | 1510 | return stmt_expr; |
8d08fdba MS |
1511 | } |
1512 | ||
1513 | if (TREE_CODE (exp) == VAR_DECL || TREE_CODE (exp) == PARM_DECL) | |
f4f206f4 | 1514 | /* Just know that we've seen something for this node. */ |
8d08fdba MS |
1515 | TREE_USED (exp) = 1; |
1516 | ||
2a3398e1 | 1517 | is_global = begin_init_stmts (&stmt_expr, &compound_stmt); |
f2c5f623 | 1518 | destroy_temps = stmts_are_full_exprs_p (); |
ae499cce | 1519 | current_stmt_tree ()->stmts_are_full_exprs_p = 0; |
8d08fdba | 1520 | expand_aggr_init_1 (TYPE_BINFO (type), exp, exp, |
5ade1ed2 | 1521 | init, LOOKUP_NORMAL|flags, complain); |
2a3398e1 | 1522 | stmt_expr = finish_init_stmts (is_global, stmt_expr, compound_stmt); |
ae499cce | 1523 | current_stmt_tree ()->stmts_are_full_exprs_p = destroy_temps; |
8d08fdba | 1524 | TREE_READONLY (exp) = was_const; |
f30432d7 | 1525 | TREE_THIS_VOLATILE (exp) = was_volatile; |
f1dedc31 MM |
1526 | |
1527 | return stmt_expr; | |
8d08fdba MS |
1528 | } |
1529 | ||
1530 | static void | |
5ade1ed2 DG |
1531 | expand_default_init (tree binfo, tree true_exp, tree exp, tree init, int flags, |
1532 | tsubst_flags_t complain) | |
8d08fdba | 1533 | { |
fc378698 | 1534 | tree type = TREE_TYPE (exp); |
9eb71d8c | 1535 | tree ctor_name; |
fc378698 | 1536 | |
8d08fdba MS |
1537 | /* It fails because there may not be a constructor which takes |
1538 | its own type as the first (or only parameter), but which does | |
1539 | take other types via a conversion. So, if the thing initializing | |
1540 | the expression is a unit element of type X, first try X(X&), | |
1541 | followed by initialization by X. If neither of these work | |
1542 | out, then look hard. */ | |
1543 | tree rval; | |
c166b898 | 1544 | VEC(tree,gc) *parms; |
8d08fdba | 1545 | |
2061820e JM |
1546 | /* If we have direct-initialization from an initializer list, pull |
1547 | it out of the TREE_LIST so the code below can see it. */ | |
1548 | if (init && TREE_CODE (init) == TREE_LIST | |
1549 | && BRACE_ENCLOSED_INITIALIZER_P (TREE_VALUE (init)) | |
1550 | && CONSTRUCTOR_IS_DIRECT_INIT (TREE_VALUE (init))) | |
1551 | { | |
1552 | gcc_checking_assert ((flags & LOOKUP_ONLYCONVERTING) == 0 | |
1553 | && TREE_CHAIN (init) == NULL_TREE); | |
1554 | init = TREE_VALUE (init); | |
1555 | } | |
1556 | ||
4c9b3895 JM |
1557 | if (init && BRACE_ENCLOSED_INITIALIZER_P (init) |
1558 | && CP_AGGREGATE_TYPE_P (type)) | |
e08cc018 JM |
1559 | /* A brace-enclosed initializer for an aggregate. In C++0x this can |
1560 | happen for direct-initialization, too. */ | |
1561 | init = digest_init (type, init, complain); | |
1562 | ||
1563 | /* A CONSTRUCTOR of the target's type is a previously digested | |
1564 | initializer, whether that happened just above or in | |
1565 | cp_parser_late_parsing_nsdmi. | |
1566 | ||
1567 | A TARGET_EXPR with TARGET_EXPR_DIRECT_INIT_P or TARGET_EXPR_LIST_INIT_P | |
1568 | set represents the whole initialization, so we shouldn't build up | |
1569 | another ctor call. */ | |
1570 | if (init | |
1571 | && (TREE_CODE (init) == CONSTRUCTOR | |
1572 | || (TREE_CODE (init) == TARGET_EXPR | |
1573 | && (TARGET_EXPR_DIRECT_INIT_P (init) | |
1574 | || TARGET_EXPR_LIST_INIT_P (init)))) | |
1575 | && same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (init), type)) | |
4c9b3895 | 1576 | { |
e08cc018 JM |
1577 | /* Early initialization via a TARGET_EXPR only works for |
1578 | complete objects. */ | |
1579 | gcc_assert (TREE_CODE (init) == CONSTRUCTOR || true_exp == exp); | |
1580 | ||
4c9b3895 JM |
1581 | init = build2 (INIT_EXPR, TREE_TYPE (exp), exp, init); |
1582 | TREE_SIDE_EFFECTS (init) = 1; | |
1583 | finish_expr_stmt (init); | |
1584 | return; | |
1585 | } | |
1586 | ||
277294d7 | 1587 | if (init && TREE_CODE (init) != TREE_LIST |
faf5394a MS |
1588 | && (flags & LOOKUP_ONLYCONVERTING)) |
1589 | { | |
1590 | /* Base subobjects should only get direct-initialization. */ | |
8dc2b103 | 1591 | gcc_assert (true_exp == exp); |
faf5394a | 1592 | |
c37dc68e JM |
1593 | if (flags & DIRECT_BIND) |
1594 | /* Do nothing. We hit this in two cases: Reference initialization, | |
1595 | where we aren't initializing a real variable, so we don't want | |
1596 | to run a new constructor; and catching an exception, where we | |
1597 | have already built up the constructor call so we could wrap it | |
1598 | in an exception region. */; | |
1599 | else | |
4b978f96 PC |
1600 | init = ocp_convert (type, init, CONV_IMPLICIT|CONV_FORCE_TEMP, |
1601 | flags, complain); | |
faf5394a | 1602 | |
4e8dca1c JM |
1603 | if (TREE_CODE (init) == MUST_NOT_THROW_EXPR) |
1604 | /* We need to protect the initialization of a catch parm with a | |
1605 | call to terminate(), which shows up as a MUST_NOT_THROW_EXPR | |
c7ae64f2 | 1606 | around the TARGET_EXPR for the copy constructor. See |
4e8dca1c JM |
1607 | initialize_handler_parm. */ |
1608 | { | |
f293ce4b RS |
1609 | TREE_OPERAND (init, 0) = build2 (INIT_EXPR, TREE_TYPE (exp), exp, |
1610 | TREE_OPERAND (init, 0)); | |
4e8dca1c JM |
1611 | TREE_TYPE (init) = void_type_node; |
1612 | } | |
c7ae64f2 | 1613 | else |
f293ce4b | 1614 | init = build2 (INIT_EXPR, TREE_TYPE (exp), exp, init); |
c7ae64f2 | 1615 | TREE_SIDE_EFFECTS (init) = 1; |
f1dedc31 | 1616 | finish_expr_stmt (init); |
faf5394a MS |
1617 | return; |
1618 | } | |
1619 | ||
c166b898 ILT |
1620 | if (init == NULL_TREE) |
1621 | parms = NULL; | |
1622 | else if (TREE_CODE (init) == TREE_LIST && !TREE_TYPE (init)) | |
8d08fdba | 1623 | { |
c166b898 ILT |
1624 | parms = make_tree_vector (); |
1625 | for (; init != NULL_TREE; init = TREE_CHAIN (init)) | |
1626 | VEC_safe_push (tree, gc, parms, TREE_VALUE (init)); | |
8d08fdba | 1627 | } |
8d08fdba | 1628 | else |
c166b898 | 1629 | parms = make_tree_vector_single (init); |
8d08fdba | 1630 | |
238e471c VV |
1631 | if (exp == current_class_ref && current_function_decl |
1632 | && DECL_HAS_IN_CHARGE_PARM_P (current_function_decl)) | |
1633 | { | |
1634 | /* Delegating constructor. */ | |
1635 | tree complete; | |
1636 | tree base; | |
c4ce224c JM |
1637 | tree elt; unsigned i; |
1638 | ||
1639 | /* Unshare the arguments for the second call. */ | |
1640 | VEC(tree,gc) *parms2 = make_tree_vector (); | |
1641 | FOR_EACH_VEC_ELT (tree, parms, i, elt) | |
1642 | { | |
1643 | elt = break_out_target_exprs (elt); | |
1644 | VEC_safe_push (tree, gc, parms2, elt); | |
1645 | } | |
238e471c | 1646 | complete = build_special_member_call (exp, complete_ctor_identifier, |
c4ce224c JM |
1647 | &parms2, binfo, flags, |
1648 | complain); | |
1649 | complete = fold_build_cleanup_point_expr (void_type_node, complete); | |
1650 | release_tree_vector (parms2); | |
1651 | ||
238e471c VV |
1652 | base = build_special_member_call (exp, base_ctor_identifier, |
1653 | &parms, binfo, flags, | |
1654 | complain); | |
c4ce224c JM |
1655 | base = fold_build_cleanup_point_expr (void_type_node, base); |
1656 | rval = build3 (COND_EXPR, void_type_node, | |
1657 | build2 (EQ_EXPR, boolean_type_node, | |
1658 | current_in_charge_parm, integer_zero_node), | |
1659 | base, | |
1660 | complete); | |
238e471c VV |
1661 | } |
1662 | else | |
1663 | { | |
1664 | if (true_exp == exp) | |
1665 | ctor_name = complete_ctor_identifier; | |
1666 | else | |
1667 | ctor_name = base_ctor_identifier; | |
1668 | rval = build_special_member_call (exp, ctor_name, &parms, binfo, flags, | |
1669 | complain); | |
1670 | } | |
c166b898 ILT |
1671 | |
1672 | if (parms != NULL) | |
1673 | release_tree_vector (parms); | |
1674 | ||
fa2200cb JM |
1675 | if (exp == true_exp && TREE_CODE (rval) == CALL_EXPR) |
1676 | { | |
1677 | tree fn = get_callee_fndecl (rval); | |
a76c13bf | 1678 | if (fn && DECL_DECLARED_CONSTEXPR_P (fn)) |
fa2200cb | 1679 | { |
07a9e891 | 1680 | tree e = maybe_constant_init (rval); |
fa2200cb JM |
1681 | if (TREE_CONSTANT (e)) |
1682 | rval = build2 (INIT_EXPR, type, exp, e); | |
1683 | } | |
1684 | } | |
1685 | ||
1686 | /* FIXME put back convert_to_void? */ | |
25eb19ff | 1687 | if (TREE_SIDE_EFFECTS (rval)) |
fa2200cb | 1688 | finish_expr_stmt (rval); |
8d08fdba MS |
1689 | } |
1690 | ||
1691 | /* This function is responsible for initializing EXP with INIT | |
1692 | (if any). | |
1693 | ||
1694 | BINFO is the binfo of the type for who we are performing the | |
1695 | initialization. For example, if W is a virtual base class of A and B, | |
1696 | and C : A, B. | |
1697 | If we are initializing B, then W must contain B's W vtable, whereas | |
1698 | were we initializing C, W must contain C's W vtable. | |
1699 | ||
1700 | TRUE_EXP is nonzero if it is the true expression being initialized. | |
1701 | In this case, it may be EXP, or may just contain EXP. The reason we | |
1702 | need this is because if EXP is a base element of TRUE_EXP, we | |
1703 | don't necessarily know by looking at EXP where its virtual | |
1704 | baseclass fields should really be pointing. But we do know | |
1705 | from TRUE_EXP. In constructors, we don't know anything about | |
1706 | the value being initialized. | |
1707 | ||
9f880ef9 MM |
1708 | FLAGS is just passed to `build_new_method_call'. See that function |
1709 | for its description. */ | |
8d08fdba MS |
1710 | |
1711 | static void | |
5ade1ed2 DG |
1712 | expand_aggr_init_1 (tree binfo, tree true_exp, tree exp, tree init, int flags, |
1713 | tsubst_flags_t complain) | |
8d08fdba MS |
1714 | { |
1715 | tree type = TREE_TYPE (exp); | |
8d08fdba | 1716 | |
50bc768d | 1717 | gcc_assert (init != error_mark_node && type != error_mark_node); |
38e01f9e | 1718 | gcc_assert (building_stmt_list_p ()); |
8d08fdba MS |
1719 | |
1720 | /* Use a function returning the desired type to initialize EXP for us. | |
1721 | If the function is a constructor, and its first argument is | |
1722 | NULL_TREE, know that it was meant for us--just slide exp on | |
1723 | in and expand the constructor. Constructors now come | |
1724 | as TARGET_EXPRs. */ | |
faf5394a MS |
1725 | |
1726 | if (init && TREE_CODE (exp) == VAR_DECL | |
3b2db49f | 1727 | && COMPOUND_LITERAL_P (init)) |
faf5394a | 1728 | { |
b25dd954 | 1729 | VEC(tree,gc)* cleanups = NULL; |
f1dedc31 | 1730 | /* If store_init_value returns NULL_TREE, the INIT has been |
3b2db49f | 1731 | recorded as the DECL_INITIAL for EXP. That means there's |
f1dedc31 | 1732 | nothing more we have to do. */ |
b25dd954 | 1733 | init = store_init_value (exp, init, &cleanups, flags); |
25ebb82a RH |
1734 | if (init) |
1735 | finish_expr_stmt (init); | |
b25dd954 | 1736 | gcc_assert (!cleanups); |
faf5394a MS |
1737 | return; |
1738 | } | |
1739 | ||
fd97a96a JM |
1740 | /* If an explicit -- but empty -- initializer list was present, |
1741 | that's value-initialization. */ | |
1742 | if (init == void_type_node) | |
1743 | { | |
c2b3ec18 JM |
1744 | /* If the type has data but no user-provided ctor, we need to zero |
1745 | out the object. */ | |
1746 | if (!type_has_user_provided_constructor (type) | |
1747 | && !is_really_empty_class (type)) | |
fd97a96a | 1748 | { |
1fb0b801 JM |
1749 | tree field_size = NULL_TREE; |
1750 | if (exp != true_exp && CLASSTYPE_AS_BASE (type) != type) | |
1751 | /* Don't clobber already initialized virtual bases. */ | |
1752 | field_size = TYPE_SIZE (CLASSTYPE_AS_BASE (type)); | |
1753 | init = build_zero_init_1 (type, NULL_TREE, /*static_storage_p=*/false, | |
1754 | field_size); | |
fd97a96a JM |
1755 | init = build2 (INIT_EXPR, type, exp, init); |
1756 | finish_expr_stmt (init); | |
fd97a96a | 1757 | } |
1fb0b801 | 1758 | |
fd97a96a | 1759 | /* If we don't need to mess with the constructor at all, |
1fb0b801 JM |
1760 | then we're done. */ |
1761 | if (! type_build_ctor_call (type)) | |
1762 | return; | |
1763 | ||
1764 | /* Otherwise fall through and call the constructor. */ | |
fd97a96a JM |
1765 | init = NULL_TREE; |
1766 | } | |
1767 | ||
9e9ff709 MS |
1768 | /* We know that expand_default_init can handle everything we want |
1769 | at this point. */ | |
5ade1ed2 | 1770 | expand_default_init (binfo, true_exp, exp, init, flags, complain); |
8d08fdba MS |
1771 | } |
1772 | ||
9e1e64ec | 1773 | /* Report an error if TYPE is not a user-defined, class type. If |
be99da77 | 1774 | OR_ELSE is nonzero, give an error message. */ |
e92cc029 | 1775 | |
be99da77 | 1776 | int |
9e1e64ec | 1777 | is_class_type (tree type, int or_else) |
be99da77 MS |
1778 | { |
1779 | if (type == error_mark_node) | |
1780 | return 0; | |
1781 | ||
9e1e64ec | 1782 | if (! CLASS_TYPE_P (type)) |
be99da77 MS |
1783 | { |
1784 | if (or_else) | |
9e1e64ec | 1785 | error ("%qT is not a class type", type); |
be99da77 MS |
1786 | return 0; |
1787 | } | |
1788 | return 1; | |
1789 | } | |
1790 | ||
8d08fdba | 1791 | tree |
362efdc1 | 1792 | get_type_value (tree name) |
8d08fdba | 1793 | { |
8d08fdba MS |
1794 | if (name == error_mark_node) |
1795 | return NULL_TREE; | |
1796 | ||
1797 | if (IDENTIFIER_HAS_TYPE_VALUE (name)) | |
1798 | return IDENTIFIER_TYPE_VALUE (name); | |
8d08fdba MS |
1799 | else |
1800 | return NULL_TREE; | |
1801 | } | |
051e6fd7 | 1802 | |
a5ac359a MM |
1803 | /* Build a reference to a member of an aggregate. This is not a C++ |
1804 | `&', but really something which can have its address taken, and | |
1805 | then act as a pointer to member, for example TYPE :: FIELD can have | |
1806 | its address taken by saying & TYPE :: FIELD. ADDRESS_P is true if | |
1807 | this expression is the operand of "&". | |
8d08fdba MS |
1808 | |
1809 | @@ Prints out lousy diagnostics for operator <typename> | |
1810 | @@ fields. | |
1811 | ||
51c184be | 1812 | @@ This function should be rewritten and placed in search.c. */ |
e92cc029 | 1813 | |
8d08fdba | 1814 | tree |
d4f0f205 | 1815 | build_offset_ref (tree type, tree member, bool address_p) |
8d08fdba | 1816 | { |
8d245821 | 1817 | tree decl; |
fc378698 | 1818 | tree basebinfo = NULL_TREE; |
8d08fdba | 1819 | |
5f311aec | 1820 | /* class templates can come in as TEMPLATE_DECLs here. */ |
d4f0f205 MM |
1821 | if (TREE_CODE (member) == TEMPLATE_DECL) |
1822 | return member; | |
93cdc044 | 1823 | |
627bc938 JM |
1824 | if (dependent_scope_p (type) || type_dependent_expression_p (member)) |
1825 | return build_qualified_name (NULL_TREE, type, member, | |
2d660b7f | 1826 | /*template_p=*/false); |
5566b478 | 1827 | |
d4f0f205 | 1828 | gcc_assert (TYPE_P (type)); |
9e1e64ec | 1829 | if (! is_class_type (type, 1)) |
c833d2be NS |
1830 | return error_mark_node; |
1831 | ||
d4f0f205 MM |
1832 | gcc_assert (DECL_P (member) || BASELINK_P (member)); |
1833 | /* Callers should call mark_used before this point. */ | |
3146f36f | 1834 | gcc_assert (!DECL_P (member) || TREE_USED (member)); |
be99da77 | 1835 | |
627bc938 | 1836 | type = TYPE_MAIN_VARIANT (type); |
01628e54 | 1837 | if (!COMPLETE_OR_OPEN_TYPE_P (complete_type (type))) |
8d08fdba | 1838 | { |
d4f0f205 | 1839 | error ("incomplete type %qT does not have member %qD", type, member); |
a5ac359a MM |
1840 | return error_mark_node; |
1841 | } | |
1842 | ||
d4f0f205 | 1843 | /* Entities other than non-static members need no further |
3db45ab5 | 1844 | processing. */ |
a5ac359a | 1845 | if (TREE_CODE (member) == TYPE_DECL) |
d4f0f205 | 1846 | return member; |
a5ac359a | 1847 | if (TREE_CODE (member) == VAR_DECL || TREE_CODE (member) == CONST_DECL) |
d4f0f205 | 1848 | return convert_from_reference (member); |
a5ac359a MM |
1849 | |
1850 | if (TREE_CODE (member) == FIELD_DECL && DECL_C_BIT_FIELD (member)) | |
1851 | { | |
15a7ee29 | 1852 | error ("invalid pointer to bit-field %qD", member); |
a5ac359a MM |
1853 | return error_mark_node; |
1854 | } | |
1855 | ||
d4f0f205 MM |
1856 | /* Set up BASEBINFO for member lookup. */ |
1857 | decl = maybe_dummy_object (type, &basebinfo); | |
1858 | ||
aa52c1ff | 1859 | /* A lot of this logic is now handled in lookup_member. */ |
a5ac359a | 1860 | if (BASELINK_P (member)) |
8d08fdba | 1861 | { |
8d08fdba | 1862 | /* Go from the TREE_BASELINK to the member function info. */ |
7304fcb4 | 1863 | tree t = BASELINK_FUNCTIONS (member); |
8d08fdba | 1864 | |
50ad9642 | 1865 | if (TREE_CODE (t) != TEMPLATE_ID_EXPR && !really_overloaded_fn (t)) |
8d08fdba | 1866 | { |
f4f206f4 | 1867 | /* Get rid of a potential OVERLOAD around it. */ |
2c73f9f5 ML |
1868 | t = OVL_CURRENT (t); |
1869 | ||
b54f5338 KL |
1870 | /* Unique functions are handled easily. */ |
1871 | ||
1872 | /* For non-static member of base class, we need a special rule | |
1873 | for access checking [class.protected]: | |
1874 | ||
1875 | If the access is to form a pointer to member, the | |
1876 | nested-name-specifier shall name the derived class | |
1877 | (or any class derived from that class). */ | |
1878 | if (address_p && DECL_P (t) | |
1879 | && DECL_NONSTATIC_MEMBER_P (t)) | |
0e69fdf0 PC |
1880 | perform_or_defer_access_check (TYPE_BINFO (type), t, t, |
1881 | tf_warning_or_error); | |
b54f5338 | 1882 | else |
0e69fdf0 PC |
1883 | perform_or_defer_access_check (basebinfo, t, t, |
1884 | tf_warning_or_error); | |
b54f5338 | 1885 | |
848b92e1 JM |
1886 | if (DECL_STATIC_FUNCTION_P (t)) |
1887 | return t; | |
a5ac359a MM |
1888 | member = t; |
1889 | } | |
1890 | else | |
7304fcb4 | 1891 | TREE_TYPE (member) = unknown_type_node; |
8d08fdba | 1892 | } |
b54f5338 KL |
1893 | else if (address_p && TREE_CODE (member) == FIELD_DECL) |
1894 | /* We need additional test besides the one in | |
1895 | check_accessibility_of_qualified_id in case it is | |
1896 | a pointer to non-static member. */ | |
0e69fdf0 PC |
1897 | perform_or_defer_access_check (TYPE_BINFO (type), member, member, |
1898 | tf_warning_or_error); | |
8d08fdba | 1899 | |
a5ac359a | 1900 | if (!address_p) |
8d08fdba | 1901 | { |
a5ac359a MM |
1902 | /* If MEMBER is non-static, then the program has fallen afoul of |
1903 | [expr.prim]: | |
8d08fdba | 1904 | |
a5ac359a MM |
1905 | An id-expression that denotes a nonstatic data member or |
1906 | nonstatic member function of a class can only be used: | |
8d08fdba | 1907 | |
a5ac359a MM |
1908 | -- as part of a class member access (_expr.ref_) in which the |
1909 | object-expression refers to the member's class or a class | |
1910 | derived from that class, or | |
b7484fbe | 1911 | |
a5ac359a MM |
1912 | -- to form a pointer to member (_expr.unary.op_), or |
1913 | ||
1914 | -- in the body of a nonstatic member function of that class or | |
1915 | of a class derived from that class (_class.mfct.nonstatic_), or | |
1916 | ||
1917 | -- in a mem-initializer for a constructor for that class or for | |
1918 | a class derived from that class (_class.base.init_). */ | |
1919 | if (DECL_NONSTATIC_MEMBER_FUNCTION_P (member)) | |
1920 | { | |
39a13be5 | 1921 | /* Build a representation of the qualified name suitable |
e9525111 MM |
1922 | for use as the operand to "&" -- even though the "&" is |
1923 | not actually present. */ | |
f293ce4b | 1924 | member = build2 (OFFSET_REF, TREE_TYPE (member), decl, member); |
a5ac359a MM |
1925 | /* In Microsoft mode, treat a non-static member function as if |
1926 | it were a pointer-to-member. */ | |
1927 | if (flag_ms_extensions) | |
1928 | { | |
a5ac359a | 1929 | PTRMEM_OK_P (member) = 1; |
93c0e0bb | 1930 | return cp_build_addr_expr (member, tf_warning_or_error); |
a5ac359a | 1931 | } |
c8094d83 | 1932 | error ("invalid use of non-static member function %qD", |
e9525111 | 1933 | TREE_OPERAND (member, 1)); |
07471dfb | 1934 | return error_mark_node; |
a5ac359a MM |
1935 | } |
1936 | else if (TREE_CODE (member) == FIELD_DECL) | |
1937 | { | |
15a7ee29 | 1938 | error ("invalid use of non-static data member %qD", member); |
a5ac359a MM |
1939 | return error_mark_node; |
1940 | } | |
1941 | return member; | |
1942 | } | |
8d08fdba | 1943 | |
f293ce4b | 1944 | member = build2 (OFFSET_REF, TREE_TYPE (member), decl, member); |
8d245821 MM |
1945 | PTRMEM_OK_P (member) = 1; |
1946 | return member; | |
8d08fdba MS |
1947 | } |
1948 | ||
393e756d MM |
1949 | /* If DECL is a scalar enumeration constant or variable with a |
1950 | constant initializer, return the initializer (or, its initializers, | |
1951 | recursively); otherwise, return DECL. If INTEGRAL_P, the | |
1952 | initializer is only returned if DECL is an integral | |
90454da1 PC |
1953 | constant-expression. If RETURN_AGGREGATE_CST_OK_P, it is ok to |
1954 | return an aggregate constant. */ | |
8d08fdba | 1955 | |
393e756d | 1956 | static tree |
90454da1 | 1957 | constant_value_1 (tree decl, bool integral_p, bool return_aggregate_cst_ok_p) |
8d08fdba | 1958 | { |
f513e31f | 1959 | while (TREE_CODE (decl) == CONST_DECL |
3db45ab5 | 1960 | || (integral_p |
fa2200cb | 1961 | ? decl_constant_var_p (decl) |
393e756d MM |
1962 | : (TREE_CODE (decl) == VAR_DECL |
1963 | && CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (decl))))) | |
b794e321 MM |
1964 | { |
1965 | tree init; | |
fa2200cb JM |
1966 | /* If DECL is a static data member in a template |
1967 | specialization, we must instantiate it here. The | |
1968 | initializer for the static data member is not processed | |
1969 | until needed; we need it now. */ | |
1970 | mark_used (decl); | |
1971 | mark_rvalue_use (decl); | |
1972 | init = DECL_INITIAL (decl); | |
d174af6c | 1973 | if (init == error_mark_node) |
88274c4d JM |
1974 | { |
1975 | if (DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl)) | |
1976 | /* Treat the error as a constant to avoid cascading errors on | |
1977 | excessively recursive template instantiation (c++/9335). */ | |
1978 | return init; | |
1979 | else | |
1980 | return decl; | |
1981 | } | |
73ce7fcb JJ |
1982 | /* Initializers in templates are generally expanded during |
1983 | instantiation, so before that for const int i(2) | |
1984 | INIT is a TREE_LIST with the actual initializer as | |
1985 | TREE_VALUE. */ | |
1986 | if (processing_template_decl | |
1987 | && init | |
1988 | && TREE_CODE (init) == TREE_LIST | |
1989 | && TREE_CHAIN (init) == NULL_TREE) | |
1990 | init = TREE_VALUE (init); | |
d174af6c | 1991 | if (!init |
b794e321 | 1992 | || !TREE_TYPE (init) |
8152661b | 1993 | || !TREE_CONSTANT (init) |
90454da1 PC |
1994 | || (!integral_p && !return_aggregate_cst_ok_p |
1995 | /* Unless RETURN_AGGREGATE_CST_OK_P is true, do not | |
1996 | return an aggregate constant (of which string | |
1997 | literals are a special case), as we do not want | |
1998 | to make inadvertent copies of such entities, and | |
1999 | we must be sure that their addresses are the | |
2000 | same everywhere. */ | |
8152661b JM |
2001 | && (TREE_CODE (init) == CONSTRUCTOR |
2002 | || TREE_CODE (init) == STRING_CST))) | |
b794e321 | 2003 | break; |
57b37fe3 | 2004 | decl = unshare_expr (init); |
b794e321 | 2005 | } |
8a784e4a NS |
2006 | return decl; |
2007 | } | |
a1652802 | 2008 | |
393e756d MM |
2009 | /* If DECL is a CONST_DECL, or a constant VAR_DECL initialized by |
2010 | constant of integral or enumeration type, then return that value. | |
2011 | These are those variables permitted in constant expressions by | |
2012 | [5.19/1]. */ | |
a1652802 | 2013 | |
8a784e4a | 2014 | tree |
393e756d | 2015 | integral_constant_value (tree decl) |
8a784e4a | 2016 | { |
90454da1 PC |
2017 | return constant_value_1 (decl, /*integral_p=*/true, |
2018 | /*return_aggregate_cst_ok_p=*/false); | |
393e756d | 2019 | } |
c8094d83 | 2020 | |
393e756d | 2021 | /* A more relaxed version of integral_constant_value, used by the |
90454da1 | 2022 | common C/C++ code. */ |
393e756d MM |
2023 | |
2024 | tree | |
2025 | decl_constant_value (tree decl) | |
2026 | { | |
90454da1 PC |
2027 | return constant_value_1 (decl, /*integral_p=*/processing_template_decl, |
2028 | /*return_aggregate_cst_ok_p=*/true); | |
2029 | } | |
2030 | ||
2031 | /* A version of integral_constant_value used by the C++ front end for | |
2032 | optimization purposes. */ | |
2033 | ||
2034 | tree | |
2035 | decl_constant_value_safe (tree decl) | |
2036 | { | |
2037 | return constant_value_1 (decl, /*integral_p=*/processing_template_decl, | |
2038 | /*return_aggregate_cst_ok_p=*/false); | |
8d08fdba MS |
2039 | } |
2040 | \f | |
8d08fdba MS |
2041 | /* Common subroutines of build_new and build_vec_delete. */ |
2042 | ||
c787dd82 | 2043 | /* Call the global __builtin_delete to delete ADDR. */ |
8d08fdba | 2044 | |
bd6dd845 | 2045 | static tree |
362efdc1 | 2046 | build_builtin_delete_call (tree addr) |
8d08fdba | 2047 | { |
a6ecf8b6 | 2048 | mark_used (global_delete_fndecl); |
94a0dd7b | 2049 | return build_call_n (global_delete_fndecl, 1, addr); |
8d08fdba MS |
2050 | } |
2051 | \f | |
63c9a190 MM |
2052 | /* Build and return a NEW_EXPR. If NELTS is non-NULL, TYPE[NELTS] is |
2053 | the type of the object being allocated; otherwise, it's just TYPE. | |
2054 | INIT is the initializer, if any. USE_GLOBAL_NEW is true if the | |
2055 | user explicitly wrote "::operator new". PLACEMENT, if non-NULL, is | |
c166b898 ILT |
2056 | a vector of arguments to be provided as arguments to a placement |
2057 | new operator. This routine performs no semantic checks; it just | |
2058 | creates and returns a NEW_EXPR. */ | |
a0d5fba7 | 2059 | |
63c9a190 | 2060 | static tree |
c166b898 ILT |
2061 | build_raw_new_expr (VEC(tree,gc) *placement, tree type, tree nelts, |
2062 | VEC(tree,gc) *init, int use_global_new) | |
743f140d | 2063 | { |
c166b898 | 2064 | tree init_list; |
63c9a190 | 2065 | tree new_expr; |
3db45ab5 | 2066 | |
c166b898 ILT |
2067 | /* If INIT is NULL, the we want to store NULL_TREE in the NEW_EXPR. |
2068 | If INIT is not NULL, then we want to store VOID_ZERO_NODE. This | |
2069 | permits us to distinguish the case of a missing initializer "new | |
2070 | int" from an empty initializer "new int()". */ | |
2071 | if (init == NULL) | |
2072 | init_list = NULL_TREE; | |
2073 | else if (VEC_empty (tree, init)) | |
2074 | init_list = void_zero_node; | |
2075 | else | |
2076 | init_list = build_tree_list_vec (init); | |
2077 | ||
2078 | new_expr = build4 (NEW_EXPR, build_pointer_type (type), | |
2079 | build_tree_list_vec (placement), type, nelts, | |
2080 | init_list); | |
63c9a190 MM |
2081 | NEW_EXPR_USE_GLOBAL (new_expr) = use_global_new; |
2082 | TREE_SIDE_EFFECTS (new_expr) = 1; | |
2083 | ||
2084 | return new_expr; | |
743f140d PB |
2085 | } |
2086 | ||
9d809e8f FC |
2087 | /* Diagnose uninitialized const members or reference members of type |
2088 | TYPE. USING_NEW is used to disambiguate the diagnostic between a | |
40bb78ad FC |
2089 | new expression without a new-initializer and a declaration. Returns |
2090 | the error count. */ | |
9d809e8f | 2091 | |
40bb78ad | 2092 | static int |
9d809e8f | 2093 | diagnose_uninitialized_cst_or_ref_member_1 (tree type, tree origin, |
40bb78ad | 2094 | bool using_new, bool complain) |
9d809e8f FC |
2095 | { |
2096 | tree field; | |
40bb78ad | 2097 | int error_count = 0; |
9d809e8f | 2098 | |
10ab8f62 | 2099 | if (type_has_user_provided_constructor (type)) |
40bb78ad | 2100 | return 0; |
10ab8f62 | 2101 | |
910ad8de | 2102 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
9d809e8f FC |
2103 | { |
2104 | tree field_type; | |
2105 | ||
2106 | if (TREE_CODE (field) != FIELD_DECL) | |
2107 | continue; | |
2108 | ||
2109 | field_type = strip_array_types (TREE_TYPE (field)); | |
2110 | ||
1c682d06 FC |
2111 | if (type_has_user_provided_constructor (field_type)) |
2112 | continue; | |
2113 | ||
9d809e8f FC |
2114 | if (TREE_CODE (field_type) == REFERENCE_TYPE) |
2115 | { | |
40bb78ad FC |
2116 | ++ error_count; |
2117 | if (complain) | |
2118 | { | |
2119 | if (using_new) | |
2120 | error ("uninitialized reference member in %q#T " | |
2121 | "using %<new%> without new-initializer", origin); | |
2122 | else | |
2123 | error ("uninitialized reference member in %q#T", origin); | |
2124 | inform (DECL_SOURCE_LOCATION (field), | |
2125 | "%qD should be initialized", field); | |
2126 | } | |
9d809e8f FC |
2127 | } |
2128 | ||
2129 | if (CP_TYPE_CONST_P (field_type)) | |
2130 | { | |
40bb78ad FC |
2131 | ++ error_count; |
2132 | if (complain) | |
2133 | { | |
2134 | if (using_new) | |
2135 | error ("uninitialized const member in %q#T " | |
2136 | "using %<new%> without new-initializer", origin); | |
2137 | else | |
2138 | error ("uninitialized const member in %q#T", origin); | |
2139 | inform (DECL_SOURCE_LOCATION (field), | |
2140 | "%qD should be initialized", field); | |
2141 | } | |
9d809e8f FC |
2142 | } |
2143 | ||
2144 | if (CLASS_TYPE_P (field_type)) | |
40bb78ad FC |
2145 | error_count |
2146 | += diagnose_uninitialized_cst_or_ref_member_1 (field_type, origin, | |
2147 | using_new, complain); | |
9d809e8f | 2148 | } |
40bb78ad | 2149 | return error_count; |
9d809e8f FC |
2150 | } |
2151 | ||
40bb78ad FC |
2152 | int |
2153 | diagnose_uninitialized_cst_or_ref_member (tree type, bool using_new, bool complain) | |
9d809e8f | 2154 | { |
40bb78ad | 2155 | return diagnose_uninitialized_cst_or_ref_member_1 (type, type, using_new, complain); |
9d809e8f FC |
2156 | } |
2157 | ||
63c9a190 MM |
2158 | /* Generate code for a new-expression, including calling the "operator |
2159 | new" function, initializing the object, and, if an exception occurs | |
2160 | during construction, cleaning up. The arguments are as for | |
c166b898 | 2161 | build_raw_new_expr. This may change PLACEMENT and INIT. */ |
a0d5fba7 | 2162 | |
834c6dff | 2163 | static tree |
c166b898 ILT |
2164 | build_new_1 (VEC(tree,gc) **placement, tree type, tree nelts, |
2165 | VEC(tree,gc) **init, bool globally_qualified_p, | |
2166 | tsubst_flags_t complain) | |
a0d5fba7 | 2167 | { |
d746e87d MM |
2168 | tree size, rval; |
2169 | /* True iff this is a call to "operator new[]" instead of just | |
c8094d83 | 2170 | "operator new". */ |
d746e87d | 2171 | bool array_p = false; |
9207099b JM |
2172 | /* If ARRAY_P is true, the element type of the array. This is never |
2173 | an ARRAY_TYPE; for something like "new int[3][4]", the | |
d746e87d | 2174 | ELT_TYPE is "int". If ARRAY_P is false, this is the same type as |
9207099b | 2175 | TYPE. */ |
d746e87d | 2176 | tree elt_type; |
f4f4610e MM |
2177 | /* The type of the new-expression. (This type is always a pointer |
2178 | type.) */ | |
2179 | tree pointer_type; | |
25357d1e | 2180 | tree non_const_pointer_type; |
a48cccea | 2181 | tree outer_nelts = NULL_TREE; |
4a84253c FW |
2182 | /* For arrays, a bounds checks on the NELTS parameter. */ |
2183 | tree outer_nelts_check = NULL_TREE; | |
4ebc46e9 | 2184 | bool outer_nelts_from_type = false; |
4a84253c | 2185 | double_int inner_nelts_count = double_int_one; |
f4f4610e MM |
2186 | tree alloc_call, alloc_expr; |
2187 | /* The address returned by the call to "operator new". This node is | |
2188 | a VAR_DECL and is therefore reusable. */ | |
2189 | tree alloc_node; | |
46ff5047 | 2190 | tree alloc_fn; |
8b5e2ce4 | 2191 | tree cookie_expr, init_expr; |
089d6ea7 | 2192 | int nothrow, check_new; |
743f140d | 2193 | int use_java_new = 0; |
834c6dff MM |
2194 | /* If non-NULL, the number of extra bytes to allocate at the |
2195 | beginning of the storage allocated for an array-new expression in | |
2196 | order to store the number of elements. */ | |
2197 | tree cookie_size = NULL_TREE; | |
c166b898 | 2198 | tree placement_first; |
a9de800a | 2199 | tree placement_expr = NULL_TREE; |
3f41ffd8 MM |
2200 | /* True if the function we are calling is a placement allocation |
2201 | function. */ | |
2202 | bool placement_allocation_fn_p; | |
f4f4610e | 2203 | /* True if the storage must be initialized, either by a constructor |
34cd5ae7 | 2204 | or due to an explicit new-initializer. */ |
f4f4610e MM |
2205 | bool is_initialized; |
2206 | /* The address of the thing allocated, not including any cookie. In | |
2207 | particular, if an array cookie is in use, DATA_ADDR is the | |
2208 | address of the first array element. This node is a VAR_DECL, and | |
2209 | is therefore reusable. */ | |
2210 | tree data_addr; | |
6de9cd9a | 2211 | tree init_preeval_expr = NULL_TREE; |
a0d5fba7 | 2212 | |
058b15c1 | 2213 | if (nelts) |
a0d5fba7 | 2214 | { |
058b15c1 | 2215 | outer_nelts = nelts; |
d746e87d | 2216 | array_p = true; |
a0d5fba7 | 2217 | } |
9207099b | 2218 | else if (TREE_CODE (type) == ARRAY_TYPE) |
d746e87d | 2219 | { |
4ebc46e9 FW |
2220 | /* Transforms new (T[N]) to new T[N]. The former is a GNU |
2221 | extension for variable N. (This also covers new T where T is | |
2222 | a VLA typedef.) */ | |
9207099b JM |
2223 | array_p = true; |
2224 | nelts = array_type_nelts_top (type); | |
2225 | outer_nelts = nelts; | |
2226 | type = TREE_TYPE (type); | |
4ebc46e9 | 2227 | outer_nelts_from_type = true; |
d746e87d | 2228 | } |
834c6dff | 2229 | |
8d08fdba MS |
2230 | /* If our base type is an array, then make sure we know how many elements |
2231 | it has. */ | |
d746e87d MM |
2232 | for (elt_type = type; |
2233 | TREE_CODE (elt_type) == ARRAY_TYPE; | |
2234 | elt_type = TREE_TYPE (elt_type)) | |
4ebc46e9 FW |
2235 | { |
2236 | tree inner_nelts = array_type_nelts_top (elt_type); | |
2237 | tree inner_nelts_cst = maybe_constant_value (inner_nelts); | |
4a84253c FW |
2238 | if (TREE_CONSTANT (inner_nelts_cst) |
2239 | && TREE_CODE (inner_nelts_cst) == INTEGER_CST) | |
2240 | { | |
2241 | double_int result; | |
2242 | if (mul_double (TREE_INT_CST_LOW (inner_nelts_cst), | |
2243 | TREE_INT_CST_HIGH (inner_nelts_cst), | |
2244 | inner_nelts_count.low, inner_nelts_count.high, | |
2245 | &result.low, &result.high)) | |
2246 | { | |
2247 | if (complain & tf_error) | |
2248 | error ("integer overflow in array size"); | |
2249 | nelts = error_mark_node; | |
2250 | } | |
2251 | inner_nelts_count = result; | |
2252 | } | |
2253 | else | |
4ebc46e9 FW |
2254 | { |
2255 | if (complain & tf_error) | |
2256 | { | |
2257 | error_at (EXPR_LOC_OR_HERE (inner_nelts), | |
2258 | "array size in operator new must be constant"); | |
2259 | cxx_constant_value(inner_nelts); | |
2260 | } | |
2261 | nelts = error_mark_node; | |
2262 | } | |
2263 | if (nelts != error_mark_node) | |
2264 | nelts = cp_build_binary_op (input_location, | |
2265 | MULT_EXPR, nelts, | |
2266 | inner_nelts_cst, | |
2267 | complain); | |
2268 | } | |
2269 | ||
2270 | if (variably_modified_type_p (elt_type, NULL_TREE) && (complain & tf_error)) | |
2271 | { | |
2272 | error ("variably modified type not allowed in operator new"); | |
2273 | return error_mark_node; | |
2274 | } | |
2275 | ||
2276 | if (nelts == error_mark_node) | |
2277 | return error_mark_node; | |
2278 | ||
2279 | /* Warn if we performed the (T[N]) to T[N] transformation and N is | |
2280 | variable. */ | |
2281 | if (outer_nelts_from_type | |
2282 | && !TREE_CONSTANT (maybe_constant_value (outer_nelts))) | |
2283 | { | |
2284 | if (complain & tf_warning_or_error) | |
2285 | pedwarn(EXPR_LOC_OR_HERE (outer_nelts), OPT_Wvla, | |
2286 | "ISO C++ does not support variable-length array types"); | |
2287 | else | |
2288 | return error_mark_node; | |
2289 | } | |
5566b478 | 2290 | |
d746e87d | 2291 | if (TREE_CODE (elt_type) == VOID_TYPE) |
e1cd6e56 | 2292 | { |
5ade1ed2 DG |
2293 | if (complain & tf_error) |
2294 | error ("invalid type %<void%> for new"); | |
e1cd6e56 MS |
2295 | return error_mark_node; |
2296 | } | |
2297 | ||
2b8497cd | 2298 | if (abstract_virtuals_error_sfinae (NULL_TREE, elt_type, complain)) |
a7a64a77 | 2299 | return error_mark_node; |
8926095f | 2300 | |
95552437 | 2301 | is_initialized = (type_build_ctor_call (elt_type) || *init != NULL); |
b87d79e6 | 2302 | |
40bb78ad | 2303 | if (*init == NULL) |
9d809e8f | 2304 | { |
40bb78ad | 2305 | bool maybe_uninitialized_error = false; |
9d809e8f FC |
2306 | /* A program that calls for default-initialization [...] of an |
2307 | entity of reference type is ill-formed. */ | |
2308 | if (CLASSTYPE_REF_FIELDS_NEED_INIT (elt_type)) | |
40bb78ad | 2309 | maybe_uninitialized_error = true; |
9d809e8f FC |
2310 | |
2311 | /* A new-expression that creates an object of type T initializes | |
2312 | that object as follows: | |
2313 | - If the new-initializer is omitted: | |
2314 | -- If T is a (possibly cv-qualified) non-POD class type | |
2315 | (or array thereof), the object is default-initialized (8.5). | |
2316 | [...] | |
2317 | -- Otherwise, the object created has indeterminate | |
2318 | value. If T is a const-qualified type, or a (possibly | |
2319 | cv-qualified) POD class type (or array thereof) | |
2320 | containing (directly or indirectly) a member of | |
2321 | const-qualified type, the program is ill-formed; */ | |
2322 | ||
2323 | if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (elt_type)) | |
40bb78ad | 2324 | maybe_uninitialized_error = true; |
9d809e8f | 2325 | |
40bb78ad FC |
2326 | if (maybe_uninitialized_error |
2327 | && diagnose_uninitialized_cst_or_ref_member (elt_type, | |
2328 | /*using_new=*/true, | |
2329 | complain & tf_error)) | |
2330 | return error_mark_node; | |
9d809e8f FC |
2331 | } |
2332 | ||
c166b898 | 2333 | if (CP_TYPE_CONST_P (elt_type) && *init == NULL |
6132bdd7 | 2334 | && default_init_uninitialized_part (elt_type)) |
f4f4610e | 2335 | { |
5ade1ed2 DG |
2336 | if (complain & tf_error) |
2337 | error ("uninitialized const in %<new%> of %q#T", elt_type); | |
f4f4610e MM |
2338 | return error_mark_node; |
2339 | } | |
2340 | ||
d746e87d MM |
2341 | size = size_in_bytes (elt_type); |
2342 | if (array_p) | |
4a84253c FW |
2343 | { |
2344 | /* Maximum available size in bytes. Half of the address space | |
2345 | minus the cookie size. */ | |
2346 | double_int max_size | |
2347 | = double_int_lshift (double_int_one, TYPE_PRECISION (sizetype) - 1, | |
2348 | HOST_BITS_PER_DOUBLE_INT, false); | |
2349 | /* Size of the inner array elements. */ | |
2350 | double_int inner_size; | |
2351 | /* Maximum number of outer elements which can be allocated. */ | |
2352 | double_int max_outer_nelts; | |
2353 | tree max_outer_nelts_tree; | |
2354 | ||
2355 | gcc_assert (TREE_CODE (size) == INTEGER_CST); | |
2356 | cookie_size = targetm.cxx.get_cookie_size (elt_type); | |
2357 | gcc_assert (TREE_CODE (cookie_size) == INTEGER_CST); | |
2358 | gcc_checking_assert (double_int_ucmp | |
2359 | (TREE_INT_CST (cookie_size), max_size) < 0); | |
2360 | /* Unconditionally substract the cookie size. This decreases the | |
2361 | maximum object size and is safe even if we choose not to use | |
2362 | a cookie after all. */ | |
2363 | max_size = double_int_sub (max_size, TREE_INT_CST (cookie_size)); | |
2364 | if (mul_double (TREE_INT_CST_LOW (size), TREE_INT_CST_HIGH (size), | |
2365 | inner_nelts_count.low, inner_nelts_count.high, | |
2366 | &inner_size.low, &inner_size.high) | |
2367 | || double_int_ucmp (inner_size, max_size) > 0) | |
2368 | { | |
2369 | if (complain & tf_error) | |
2370 | error ("size of array is too large"); | |
2371 | return error_mark_node; | |
2372 | } | |
2373 | max_outer_nelts = double_int_udiv (max_size, inner_size, TRUNC_DIV_EXPR); | |
2374 | /* Only keep the top-most seven bits, to simplify encoding the | |
2375 | constant in the instruction stream. */ | |
2376 | { | |
2377 | unsigned shift = HOST_BITS_PER_DOUBLE_INT - 7 | |
2378 | - (max_outer_nelts.high ? clz_hwi (max_outer_nelts.high) | |
2379 | : (HOST_BITS_PER_WIDE_INT + clz_hwi (max_outer_nelts.low))); | |
2380 | max_outer_nelts | |
2381 | = double_int_lshift (double_int_rshift | |
2382 | (max_outer_nelts, shift, | |
2383 | HOST_BITS_PER_DOUBLE_INT, false), | |
2384 | shift, HOST_BITS_PER_DOUBLE_INT, false); | |
2385 | } | |
2386 | max_outer_nelts_tree = double_int_to_tree (sizetype, max_outer_nelts); | |
2387 | ||
2388 | size = size_binop (MULT_EXPR, size, convert (sizetype, nelts)); | |
2389 | outer_nelts_check = fold_build2 (LE_EXPR, boolean_type_node, | |
2390 | outer_nelts, | |
2391 | max_outer_nelts_tree); | |
2392 | } | |
a28e3c7f | 2393 | |
63c9a190 MM |
2394 | alloc_fn = NULL_TREE; |
2395 | ||
c166b898 ILT |
2396 | /* If PLACEMENT is a single simple pointer type not passed by |
2397 | reference, prepare to capture it in a temporary variable. Do | |
2398 | this now, since PLACEMENT will change in the calls below. */ | |
c166b898 ILT |
2399 | placement_first = NULL_TREE; |
2400 | if (VEC_length (tree, *placement) == 1 | |
2401 | && (TREE_CODE (TREE_TYPE (VEC_index (tree, *placement, 0))) | |
2402 | == POINTER_TYPE)) | |
2403 | placement_first = VEC_index (tree, *placement, 0); | |
2404 | ||
e92cc029 | 2405 | /* Allocate the object. */ |
c166b898 | 2406 | if (VEC_empty (tree, *placement) && TYPE_FOR_JAVA (elt_type)) |
743f140d | 2407 | { |
63c9a190 | 2408 | tree class_addr; |
d746e87d | 2409 | tree class_decl = build_java_class_ref (elt_type); |
8b60264b | 2410 | static const char alloc_name[] = "_Jv_AllocObject"; |
6de9cd9a | 2411 | |
a3d536f1 VR |
2412 | if (class_decl == error_mark_node) |
2413 | return error_mark_node; | |
2414 | ||
743f140d | 2415 | use_java_new = 1; |
c8094d83 | 2416 | if (!get_global_value_if_present (get_identifier (alloc_name), |
63c9a190 | 2417 | &alloc_fn)) |
b1e5b86c | 2418 | { |
5ade1ed2 DG |
2419 | if (complain & tf_error) |
2420 | error ("call to Java constructor with %qs undefined", alloc_name); | |
6961a592 GB |
2421 | return error_mark_node; |
2422 | } | |
63c9a190 | 2423 | else if (really_overloaded_fn (alloc_fn)) |
b1e5b86c | 2424 | { |
5ade1ed2 DG |
2425 | if (complain & tf_error) |
2426 | error ("%qD should never be overloaded", alloc_fn); | |
6961a592 GB |
2427 | return error_mark_node; |
2428 | } | |
63c9a190 | 2429 | alloc_fn = OVL_CURRENT (alloc_fn); |
743f140d | 2430 | class_addr = build1 (ADDR_EXPR, jclass_node, class_decl); |
6998c7ed NF |
2431 | alloc_call = cp_build_function_call_nary (alloc_fn, complain, |
2432 | class_addr, NULL_TREE); | |
743f140d | 2433 | } |
9e1e64ec | 2434 | else if (TYPE_FOR_JAVA (elt_type) && MAYBE_CLASS_TYPE_P (elt_type)) |
360f866c JJ |
2435 | { |
2436 | error ("Java class %q#T object allocated using placement new", elt_type); | |
2437 | return error_mark_node; | |
2438 | } | |
8d08fdba MS |
2439 | else |
2440 | { | |
834c6dff | 2441 | tree fnname; |
9f880ef9 | 2442 | tree fns; |
834c6dff | 2443 | |
d746e87d | 2444 | fnname = ansi_opname (array_p ? VEC_NEW_EXPR : NEW_EXPR); |
834c6dff | 2445 | |
c8094d83 | 2446 | if (!globally_qualified_p |
d746e87d MM |
2447 | && CLASS_TYPE_P (elt_type) |
2448 | && (array_p | |
2449 | ? TYPE_HAS_ARRAY_NEW_OPERATOR (elt_type) | |
2450 | : TYPE_HAS_NEW_OPERATOR (elt_type))) | |
089d6ea7 MM |
2451 | { |
2452 | /* Use a class-specific operator new. */ | |
2453 | /* If a cookie is required, add some extra space. */ | |
d746e87d | 2454 | if (array_p && TYPE_VEC_NEW_USES_COOKIE (elt_type)) |
4a84253c FW |
2455 | size = size_binop (PLUS_EXPR, size, cookie_size); |
2456 | else | |
2457 | cookie_size = NULL_TREE; | |
2458 | /* Perform the overflow check. */ | |
2459 | if (outer_nelts_check != NULL_TREE) | |
2460 | size = fold_build3 (COND_EXPR, sizetype, outer_nelts_check, | |
2461 | size, TYPE_MAX_VALUE (sizetype)); | |
089d6ea7 | 2462 | /* Create the argument list. */ |
c166b898 | 2463 | VEC_safe_insert (tree, gc, *placement, 0, size); |
9f880ef9 | 2464 | /* Do name-lookup to find the appropriate operator. */ |
d746e87d | 2465 | fns = lookup_fnfields (elt_type, fnname, /*protect=*/2); |
a85cb0d7 VR |
2466 | if (fns == NULL_TREE) |
2467 | { | |
5ade1ed2 DG |
2468 | if (complain & tf_error) |
2469 | error ("no suitable %qD found in class %qT", fnname, elt_type); | |
a85cb0d7 VR |
2470 | return error_mark_node; |
2471 | } | |
9f880ef9 MM |
2472 | if (TREE_CODE (fns) == TREE_LIST) |
2473 | { | |
5ade1ed2 DG |
2474 | if (complain & tf_error) |
2475 | { | |
2476 | error ("request for member %qD is ambiguous", fnname); | |
2477 | print_candidates (fns); | |
2478 | } | |
9f880ef9 MM |
2479 | return error_mark_node; |
2480 | } | |
d746e87d | 2481 | alloc_call = build_new_method_call (build_dummy_object (elt_type), |
c166b898 | 2482 | fns, placement, |
9f880ef9 | 2483 | /*conversion_path=*/NULL_TREE, |
63c9a190 | 2484 | LOOKUP_NORMAL, |
5ade1ed2 DG |
2485 | &alloc_fn, |
2486 | complain); | |
089d6ea7 | 2487 | } |
834c6dff | 2488 | else |
089d6ea7 MM |
2489 | { |
2490 | /* Use a global operator new. */ | |
125e6594 | 2491 | /* See if a cookie might be required. */ |
4a84253c | 2492 | if (!(array_p && TYPE_VEC_NEW_USES_COOKIE (elt_type))) |
125e6594 MM |
2493 | cookie_size = NULL_TREE; |
2494 | ||
c8094d83 | 2495 | alloc_call = build_operator_new_call (fnname, placement, |
63c9a190 | 2496 | &size, &cookie_size, |
4a84253c | 2497 | outer_nelts_check, |
b40e334f | 2498 | &alloc_fn, complain); |
089d6ea7 | 2499 | } |
8d08fdba MS |
2500 | } |
2501 | ||
96790071 | 2502 | if (alloc_call == error_mark_node) |
2bb5d995 JM |
2503 | return error_mark_node; |
2504 | ||
63c9a190 MM |
2505 | gcc_assert (alloc_fn != NULL_TREE); |
2506 | ||
c166b898 ILT |
2507 | /* If we found a simple case of PLACEMENT_EXPR above, then copy it |
2508 | into a temporary variable. */ | |
a9de800a | 2509 | if (!processing_template_decl |
c166b898 | 2510 | && placement_first != NULL_TREE |
a9de800a JJ |
2511 | && TREE_CODE (alloc_call) == CALL_EXPR |
2512 | && call_expr_nargs (alloc_call) == 2 | |
2513 | && TREE_CODE (TREE_TYPE (CALL_EXPR_ARG (alloc_call, 0))) == INTEGER_TYPE | |
2514 | && TREE_CODE (TREE_TYPE (CALL_EXPR_ARG (alloc_call, 1))) == POINTER_TYPE) | |
2515 | { | |
2516 | tree placement_arg = CALL_EXPR_ARG (alloc_call, 1); | |
2517 | ||
550a799d | 2518 | if (INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (TREE_TYPE (placement_arg))) |
a9de800a JJ |
2519 | || VOID_TYPE_P (TREE_TYPE (TREE_TYPE (placement_arg)))) |
2520 | { | |
c166b898 | 2521 | placement_expr = get_target_expr (placement_first); |
a9de800a JJ |
2522 | CALL_EXPR_ARG (alloc_call, 1) |
2523 | = convert (TREE_TYPE (placement_arg), placement_expr); | |
2524 | } | |
2525 | } | |
2526 | ||
a6111661 JM |
2527 | /* In the simple case, we can stop now. */ |
2528 | pointer_type = build_pointer_type (type); | |
2529 | if (!cookie_size && !is_initialized) | |
4d7a65ea | 2530 | return build_nop (pointer_type, alloc_call); |
a6111661 | 2531 | |
10ee5386 JM |
2532 | /* Store the result of the allocation call in a variable so that we can |
2533 | use it more than once. */ | |
2534 | alloc_expr = get_target_expr (alloc_call); | |
a6111661 JM |
2535 | alloc_node = TARGET_EXPR_SLOT (alloc_expr); |
2536 | ||
2537 | /* Strip any COMPOUND_EXPRs from ALLOC_CALL. */ | |
c8094d83 | 2538 | while (TREE_CODE (alloc_call) == COMPOUND_EXPR) |
a6111661 | 2539 | alloc_call = TREE_OPERAND (alloc_call, 1); |
089d6ea7 | 2540 | |
3f41ffd8 MM |
2541 | /* Now, check to see if this function is actually a placement |
2542 | allocation function. This can happen even when PLACEMENT is NULL | |
2543 | because we might have something like: | |
2544 | ||
2545 | struct S { void* operator new (size_t, int i = 0); }; | |
2546 | ||
2547 | A call to `new S' will get this allocation function, even though | |
2548 | there is no explicit placement argument. If there is more than | |
2549 | one argument, or there are variable arguments, then this is a | |
2550 | placement allocation function. */ | |
c8094d83 MS |
2551 | placement_allocation_fn_p |
2552 | = (type_num_arguments (TREE_TYPE (alloc_fn)) > 1 | |
46ff5047 | 2553 | || varargs_function_p (alloc_fn)); |
96790071 | 2554 | |
a6111661 JM |
2555 | /* Preevaluate the placement args so that we don't reevaluate them for a |
2556 | placement delete. */ | |
2557 | if (placement_allocation_fn_p) | |
2558 | { | |
6de9cd9a DN |
2559 | tree inits; |
2560 | stabilize_call (alloc_call, &inits); | |
a6111661 | 2561 | if (inits) |
f293ce4b RS |
2562 | alloc_expr = build2 (COMPOUND_EXPR, TREE_TYPE (alloc_expr), inits, |
2563 | alloc_expr); | |
a6111661 JM |
2564 | } |
2565 | ||
047f64a3 JM |
2566 | /* unless an allocation function is declared with an empty excep- |
2567 | tion-specification (_except.spec_), throw(), it indicates failure to | |
2568 | allocate storage by throwing a bad_alloc exception (clause _except_, | |
2569 | _lib.bad.alloc_); it returns a non-null pointer otherwise If the allo- | |
2570 | cation function is declared with an empty exception-specification, | |
2571 | throw(), it returns null to indicate failure to allocate storage and a | |
2572 | non-null pointer otherwise. | |
2573 | ||
2574 | So check for a null exception spec on the op new we just called. */ | |
2575 | ||
46ff5047 | 2576 | nothrow = TYPE_NOTHROW_P (TREE_TYPE (alloc_fn)); |
743f140d | 2577 | check_new = (flag_check_new || nothrow) && ! use_java_new; |
047f64a3 | 2578 | |
089d6ea7 | 2579 | if (cookie_size) |
8d08fdba | 2580 | { |
96790071 | 2581 | tree cookie; |
46e995e0 | 2582 | tree cookie_ptr; |
b5119fa1 | 2583 | tree size_ptr_type; |
f4f4610e MM |
2584 | |
2585 | /* Adjust so we're pointing to the start of the object. */ | |
5d49b6a7 | 2586 | data_addr = fold_build_pointer_plus (alloc_node, cookie_size); |
96790071 | 2587 | |
834c6dff | 2588 | /* Store the number of bytes allocated so that we can know how |
3461fba7 NS |
2589 | many elements to destroy later. We use the last sizeof |
2590 | (size_t) bytes to store the number of elements. */ | |
10ee5386 | 2591 | cookie_ptr = size_binop (MINUS_EXPR, cookie_size, size_in_bytes (sizetype)); |
5d49b6a7 RG |
2592 | cookie_ptr = fold_build_pointer_plus_loc (input_location, |
2593 | alloc_node, cookie_ptr); | |
b5119fa1 | 2594 | size_ptr_type = build_pointer_type (sizetype); |
10ee5386 | 2595 | cookie_ptr = fold_convert (size_ptr_type, cookie_ptr); |
dd865ef6 | 2596 | cookie = cp_build_indirect_ref (cookie_ptr, RO_NULL, complain); |
1f84ec23 | 2597 | |
f293ce4b | 2598 | cookie_expr = build2 (MODIFY_EXPR, sizetype, cookie, nelts); |
46e995e0 PB |
2599 | |
2600 | if (targetm.cxx.cookie_has_size ()) | |
2601 | { | |
2602 | /* Also store the element size. */ | |
5d49b6a7 | 2603 | cookie_ptr = fold_build_pointer_plus (cookie_ptr, |
db3927fb | 2604 | fold_build1_loc (input_location, |
5d49b6a7 RG |
2605 | NEGATE_EXPR, sizetype, |
2606 | size_in_bytes (sizetype))); | |
b2ec1738 | 2607 | |
dd865ef6 | 2608 | cookie = cp_build_indirect_ref (cookie_ptr, RO_NULL, complain); |
f293ce4b | 2609 | cookie = build2 (MODIFY_EXPR, sizetype, cookie, |
10ee5386 | 2610 | size_in_bytes (elt_type)); |
f293ce4b RS |
2611 | cookie_expr = build2 (COMPOUND_EXPR, TREE_TYPE (cookie_expr), |
2612 | cookie, cookie_expr); | |
46e995e0 | 2613 | } |
8d08fdba | 2614 | } |
96790071 | 2615 | else |
8b5e2ce4 JM |
2616 | { |
2617 | cookie_expr = NULL_TREE; | |
2618 | data_addr = alloc_node; | |
2619 | } | |
8d08fdba | 2620 | |
10ee5386 | 2621 | /* Now use a pointer to the type we've actually allocated. */ |
25357d1e JM |
2622 | |
2623 | /* But we want to operate on a non-const version to start with, | |
2624 | since we'll be modifying the elements. */ | |
2625 | non_const_pointer_type = build_pointer_type | |
a3360e77 | 2626 | (cp_build_qualified_type (type, cp_type_quals (type) & ~TYPE_QUAL_CONST)); |
25357d1e JM |
2627 | |
2628 | data_addr = fold_convert (non_const_pointer_type, data_addr); | |
9207099b | 2629 | /* Any further uses of alloc_node will want this type, too. */ |
25357d1e | 2630 | alloc_node = fold_convert (non_const_pointer_type, alloc_node); |
10ee5386 | 2631 | |
6de9cd9a DN |
2632 | /* Now initialize the allocated object. Note that we preevaluate the |
2633 | initialization expression, apart from the actual constructor call or | |
2634 | assignment--we do this because we want to delay the allocation as long | |
2635 | as possible in order to minimize the size of the exception region for | |
2636 | placement delete. */ | |
f4f4610e | 2637 | if (is_initialized) |
8d08fdba | 2638 | { |
6de9cd9a | 2639 | bool stable; |
844ae01d | 2640 | bool explicit_value_init_p = false; |
6de9cd9a | 2641 | |
c166b898 | 2642 | if (*init != NULL && VEC_empty (tree, *init)) |
6de9cd9a | 2643 | { |
c166b898 | 2644 | *init = NULL; |
844ae01d JM |
2645 | explicit_value_init_p = true; |
2646 | } | |
b84f4651 | 2647 | |
a67e7daa JM |
2648 | if (processing_template_decl && explicit_value_init_p) |
2649 | { | |
2650 | /* build_value_init doesn't work in templates, and we don't need | |
2651 | the initializer anyway since we're going to throw it away and | |
2652 | rebuild it at instantiation time, so just build up a single | |
2653 | constructor call to get any appropriate diagnostics. */ | |
2654 | init_expr = cp_build_indirect_ref (data_addr, RO_NULL, complain); | |
95552437 | 2655 | if (type_build_ctor_call (elt_type)) |
a67e7daa JM |
2656 | init_expr = build_special_member_call (init_expr, |
2657 | complete_ctor_identifier, | |
2658 | init, elt_type, | |
2659 | LOOKUP_NORMAL, | |
2660 | complain); | |
2661 | stable = stabilize_init (init_expr, &init_preeval_expr); | |
2662 | } | |
2663 | else if (array_p) | |
844ae01d | 2664 | { |
25357d1e JM |
2665 | tree vecinit = NULL_TREE; |
2666 | if (*init && VEC_length (tree, *init) == 1 | |
2667 | && BRACE_ENCLOSED_INITIALIZER_P (VEC_index (tree, *init, 0)) | |
2668 | && CONSTRUCTOR_IS_DIRECT_INIT (VEC_index (tree, *init, 0))) | |
2669 | { | |
25357d1e | 2670 | vecinit = VEC_index (tree, *init, 0); |
1f65a8c8 JM |
2671 | if (CONSTRUCTOR_NELTS (vecinit) == 0) |
2672 | /* List-value-initialization, leave it alone. */; | |
25357d1e JM |
2673 | else |
2674 | { | |
1f65a8c8 JM |
2675 | tree arraytype, domain; |
2676 | if (TREE_CONSTANT (nelts)) | |
2677 | domain = compute_array_index_type (NULL_TREE, nelts, | |
2678 | complain); | |
2679 | else | |
2680 | { | |
2681 | domain = NULL_TREE; | |
2682 | if (CONSTRUCTOR_NELTS (vecinit) > 0) | |
2683 | warning (0, "non-constant array size in new, unable " | |
2684 | "to verify length of initializer-list"); | |
2685 | } | |
2686 | arraytype = build_cplus_array_type (type, domain); | |
2687 | vecinit = digest_init (arraytype, vecinit, complain); | |
25357d1e | 2688 | } |
25357d1e JM |
2689 | } |
2690 | else if (*init) | |
5ade1ed2 DG |
2691 | { |
2692 | if (complain & tf_error) | |
1f65a8c8 JM |
2693 | permerror (input_location, |
2694 | "parenthesized initializer in array new"); | |
5ade1ed2 DG |
2695 | else |
2696 | return error_mark_node; | |
25357d1e | 2697 | vecinit = build_tree_list_vec (*init); |
5ade1ed2 | 2698 | } |
6de9cd9a | 2699 | init_expr |
b73a4704 JM |
2700 | = build_vec_init (data_addr, |
2701 | cp_build_binary_op (input_location, | |
2702 | MINUS_EXPR, outer_nelts, | |
2703 | integer_one_node, | |
2704 | complain), | |
2705 | vecinit, | |
2706 | explicit_value_init_p, | |
2707 | /*from_array=*/0, | |
2708 | complain); | |
6de9cd9a DN |
2709 | |
2710 | /* An array initialization is stable because the initialization | |
2711 | of each element is a full-expression, so the temporaries don't | |
2712 | leak out. */ | |
2713 | stable = true; | |
2714 | } | |
f30efcb7 | 2715 | else |
8d08fdba | 2716 | { |
dd865ef6 | 2717 | init_expr = cp_build_indirect_ref (data_addr, RO_NULL, complain); |
9207099b | 2718 | |
95552437 | 2719 | if (type_build_ctor_call (type) && !explicit_value_init_p) |
b84f4651 MM |
2720 | { |
2721 | init_expr = build_special_member_call (init_expr, | |
2722 | complete_ctor_identifier, | |
2723 | init, elt_type, | |
5ade1ed2 DG |
2724 | LOOKUP_NORMAL, |
2725 | complain); | |
844ae01d JM |
2726 | } |
2727 | else if (explicit_value_init_p) | |
2728 | { | |
a67e7daa JM |
2729 | /* Something like `new int()'. */ |
2730 | tree val = build_value_init (type, complain); | |
2731 | if (val == error_mark_node) | |
2732 | return error_mark_node; | |
2733 | init_expr = build2 (INIT_EXPR, type, init_expr, val); | |
b84f4651 | 2734 | } |
8dc2b103 | 2735 | else |
b84f4651 | 2736 | { |
c166b898 ILT |
2737 | tree ie; |
2738 | ||
b84f4651 MM |
2739 | /* We are processing something like `new int (10)', which |
2740 | means allocate an int, and initialize it with 10. */ | |
3db45ab5 | 2741 | |
c166b898 ILT |
2742 | ie = build_x_compound_expr_from_vec (*init, "new initializer"); |
2743 | init_expr = cp_build_modify_expr (init_expr, INIT_EXPR, ie, | |
5ade1ed2 | 2744 | complain); |
b84f4651 | 2745 | } |
844ae01d | 2746 | stable = stabilize_init (init_expr, &init_preeval_expr); |
96790071 JM |
2747 | } |
2748 | ||
2749 | if (init_expr == error_mark_node) | |
2750 | return error_mark_node; | |
1f109f0f | 2751 | |
20c39572 JM |
2752 | /* If any part of the object initialization terminates by throwing an |
2753 | exception and a suitable deallocation function can be found, the | |
2754 | deallocation function is called to free the memory in which the | |
2755 | object was being constructed, after which the exception continues | |
2756 | to propagate in the context of the new-expression. If no | |
2757 | unambiguous matching deallocation function can be found, | |
2758 | propagating the exception does not cause the object's memory to be | |
2759 | freed. */ | |
96790071 | 2760 | if (flag_exceptions && ! use_java_new) |
1f109f0f | 2761 | { |
d746e87d | 2762 | enum tree_code dcode = array_p ? VEC_DELETE_EXPR : DELETE_EXPR; |
96790071 | 2763 | tree cleanup; |
a7d87521 | 2764 | |
5355deec | 2765 | /* The Standard is unclear here, but the right thing to do |
f4f4610e MM |
2766 | is to use the same method for finding deallocation |
2767 | functions that we use for finding allocation functions. */ | |
10ee5386 JM |
2768 | cleanup = (build_op_delete_call |
2769 | (dcode, | |
9207099b | 2770 | alloc_node, |
10ee5386 JM |
2771 | size, |
2772 | globally_qualified_p, | |
2773 | placement_allocation_fn_p ? alloc_call : NULL_TREE, | |
4b978f96 PC |
2774 | alloc_fn, |
2775 | complain)); | |
2bb14213 | 2776 | |
6de9cd9a DN |
2777 | if (!cleanup) |
2778 | /* We're done. */; | |
2779 | else if (stable) | |
2780 | /* This is much simpler if we were able to preevaluate all of | |
2781 | the arguments to the constructor call. */ | |
d665b6e5 MLI |
2782 | { |
2783 | /* CLEANUP is compiler-generated, so no diagnostics. */ | |
2784 | TREE_NO_WARNING (cleanup) = true; | |
2785 | init_expr = build2 (TRY_CATCH_EXPR, void_type_node, | |
2786 | init_expr, cleanup); | |
2787 | /* Likewise, this try-catch is compiler-generated. */ | |
2788 | TREE_NO_WARNING (init_expr) = true; | |
2789 | } | |
6de9cd9a DN |
2790 | else |
2791 | /* Ack! First we allocate the memory. Then we set our sentry | |
2792 | variable to true, and expand a cleanup that deletes the | |
2793 | memory if sentry is true. Then we run the constructor, and | |
2794 | finally clear the sentry. | |
2795 | ||
2796 | We need to do this because we allocate the space first, so | |
2797 | if there are any temporaries with cleanups in the | |
2798 | constructor args and we weren't able to preevaluate them, we | |
2799 | need this EH region to extend until end of full-expression | |
2800 | to preserve nesting. */ | |
da4768fe | 2801 | { |
96790071 | 2802 | tree end, sentry, begin; |
2face519 JM |
2803 | |
2804 | begin = get_target_expr (boolean_true_node); | |
659e5a7a | 2805 | CLEANUP_EH_ONLY (begin) = 1; |
2face519 | 2806 | |
659e5a7a JM |
2807 | sentry = TARGET_EXPR_SLOT (begin); |
2808 | ||
d665b6e5 MLI |
2809 | /* CLEANUP is compiler-generated, so no diagnostics. */ |
2810 | TREE_NO_WARNING (cleanup) = true; | |
2811 | ||
659e5a7a | 2812 | TARGET_EXPR_CLEANUP (begin) |
f293ce4b RS |
2813 | = build3 (COND_EXPR, void_type_node, sentry, |
2814 | cleanup, void_zero_node); | |
2face519 | 2815 | |
f293ce4b RS |
2816 | end = build2 (MODIFY_EXPR, TREE_TYPE (sentry), |
2817 | sentry, boolean_false_node); | |
2face519 | 2818 | |
96790071 | 2819 | init_expr |
f293ce4b RS |
2820 | = build2 (COMPOUND_EXPR, void_type_node, begin, |
2821 | build2 (COMPOUND_EXPR, void_type_node, init_expr, | |
2822 | end)); | |
d665b6e5 MLI |
2823 | /* Likewise, this is compiler-generated. */ |
2824 | TREE_NO_WARNING (init_expr) = true; | |
da4768fe | 2825 | } |
1f109f0f | 2826 | } |
f4f4610e | 2827 | } |
8b5e2ce4 JM |
2828 | else |
2829 | init_expr = NULL_TREE; | |
2830 | ||
2831 | /* Now build up the return value in reverse order. */ | |
96790071 | 2832 | |
8b5e2ce4 | 2833 | rval = data_addr; |
2face519 | 2834 | |
8b5e2ce4 | 2835 | if (init_expr) |
f293ce4b | 2836 | rval = build2 (COMPOUND_EXPR, TREE_TYPE (rval), init_expr, rval); |
8b5e2ce4 | 2837 | if (cookie_expr) |
f293ce4b | 2838 | rval = build2 (COMPOUND_EXPR, TREE_TYPE (rval), cookie_expr, rval); |
8b5e2ce4 | 2839 | |
10ee5386 | 2840 | if (rval == data_addr) |
8b5e2ce4 JM |
2841 | /* If we don't have an initializer or a cookie, strip the TARGET_EXPR |
2842 | and return the call (which doesn't need to be adjusted). */ | |
2843 | rval = TARGET_EXPR_INITIAL (alloc_expr); | |
2844 | else | |
d18c083e | 2845 | { |
8b5e2ce4 JM |
2846 | if (check_new) |
2847 | { | |
ba47d38d AH |
2848 | tree ifexp = cp_build_binary_op (input_location, |
2849 | NE_EXPR, alloc_node, | |
6d96d7ff | 2850 | nullptr_node, |
5ade1ed2 DG |
2851 | complain); |
2852 | rval = build_conditional_expr (ifexp, rval, alloc_node, | |
2853 | complain); | |
8b5e2ce4 | 2854 | } |
d18c083e | 2855 | |
8b5e2ce4 JM |
2856 | /* Perform the allocation before anything else, so that ALLOC_NODE |
2857 | has been initialized before we start using it. */ | |
f293ce4b | 2858 | rval = build2 (COMPOUND_EXPR, TREE_TYPE (rval), alloc_expr, rval); |
8b5e2ce4 | 2859 | } |
51c184be | 2860 | |
6de9cd9a | 2861 | if (init_preeval_expr) |
f293ce4b | 2862 | rval = build2 (COMPOUND_EXPR, TREE_TYPE (rval), init_preeval_expr, rval); |
6de9cd9a | 2863 | |
d04a575f | 2864 | /* A new-expression is never an lvalue. */ |
41990f96 | 2865 | gcc_assert (!lvalue_p (rval)); |
058dcc25 | 2866 | |
25357d1e | 2867 | return convert (pointer_type, rval); |
8d08fdba | 2868 | } |
63c9a190 | 2869 | |
c166b898 ILT |
2870 | /* Generate a representation for a C++ "new" expression. *PLACEMENT |
2871 | is a vector of placement-new arguments (or NULL if none). If NELTS | |
2872 | is NULL, TYPE is the type of the storage to be allocated. If NELTS | |
2873 | is not NULL, then this is an array-new allocation; TYPE is the type | |
2874 | of the elements in the array and NELTS is the number of elements in | |
2875 | the array. *INIT, if non-NULL, is the initializer for the new | |
2876 | object, or an empty vector to indicate an initializer of "()". If | |
2877 | USE_GLOBAL_NEW is true, then the user explicitly wrote "::new" | |
2878 | rather than just "new". This may change PLACEMENT and INIT. */ | |
63c9a190 MM |
2879 | |
2880 | tree | |
c166b898 ILT |
2881 | build_new (VEC(tree,gc) **placement, tree type, tree nelts, |
2882 | VEC(tree,gc) **init, int use_global_new, tsubst_flags_t complain) | |
63c9a190 MM |
2883 | { |
2884 | tree rval; | |
c166b898 ILT |
2885 | VEC(tree,gc) *orig_placement = NULL; |
2886 | tree orig_nelts = NULL_TREE; | |
2887 | VEC(tree,gc) *orig_init = NULL; | |
63c9a190 | 2888 | |
c166b898 | 2889 | if (type == error_mark_node) |
63c9a190 MM |
2890 | return error_mark_node; |
2891 | ||
c19267cb JM |
2892 | if (nelts == NULL_TREE && VEC_length (tree, *init) == 1 |
2893 | /* Don't do auto deduction where it might affect mangling. */ | |
2894 | && (!processing_template_decl || at_function_scope_p ())) | |
86a09a9e JM |
2895 | { |
2896 | tree auto_node = type_uses_auto (type); | |
2e5748d2 JM |
2897 | if (auto_node) |
2898 | { | |
2899 | tree d_init = VEC_index (tree, *init, 0); | |
2900 | d_init = resolve_nondeduced_context (d_init); | |
d84572a4 | 2901 | type = do_auto_deduction (type, d_init, auto_node); |
2e5748d2 | 2902 | } |
86a09a9e JM |
2903 | } |
2904 | ||
63c9a190 MM |
2905 | if (processing_template_decl) |
2906 | { | |
2907 | if (dependent_type_p (type) | |
c166b898 | 2908 | || any_type_dependent_arguments_p (*placement) |
63c9a190 | 2909 | || (nelts && type_dependent_expression_p (nelts)) |
c166b898 ILT |
2910 | || any_type_dependent_arguments_p (*init)) |
2911 | return build_raw_new_expr (*placement, type, nelts, *init, | |
63c9a190 | 2912 | use_global_new); |
c166b898 ILT |
2913 | |
2914 | orig_placement = make_tree_vector_copy (*placement); | |
2915 | orig_nelts = nelts; | |
2916 | orig_init = make_tree_vector_copy (*init); | |
2917 | ||
2918 | make_args_non_dependent (*placement); | |
63c9a190 MM |
2919 | if (nelts) |
2920 | nelts = build_non_dependent_expr (nelts); | |
c166b898 | 2921 | make_args_non_dependent (*init); |
63c9a190 MM |
2922 | } |
2923 | ||
2924 | if (nelts) | |
2925 | { | |
2926 | if (!build_expr_type_conversion (WANT_INT | WANT_ENUM, nelts, false)) | |
5ade1ed2 DG |
2927 | { |
2928 | if (complain & tf_error) | |
cbe5f3b3 | 2929 | permerror (input_location, "size in array new must have integral type"); |
5ade1ed2 DG |
2930 | else |
2931 | return error_mark_node; | |
2932 | } | |
03a904b5 | 2933 | nelts = mark_rvalue_use (nelts); |
4b978f96 | 2934 | nelts = cp_save_expr (cp_convert (sizetype, nelts, complain)); |
63c9a190 MM |
2935 | } |
2936 | ||
2937 | /* ``A reference cannot be created by the new operator. A reference | |
2938 | is not an object (8.2.2, 8.4.3), so a pointer to it could not be | |
2939 | returned by new.'' ARM 5.3.3 */ | |
2940 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
2941 | { | |
5ade1ed2 DG |
2942 | if (complain & tf_error) |
2943 | error ("new cannot be applied to a reference type"); | |
2944 | else | |
2945 | return error_mark_node; | |
63c9a190 MM |
2946 | type = TREE_TYPE (type); |
2947 | } | |
2948 | ||
2949 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
2950 | { | |
5ade1ed2 DG |
2951 | if (complain & tf_error) |
2952 | error ("new cannot be applied to a function type"); | |
63c9a190 MM |
2953 | return error_mark_node; |
2954 | } | |
2955 | ||
57ccb546 MM |
2956 | /* The type allocated must be complete. If the new-type-id was |
2957 | "T[N]" then we are just checking that "T" is complete here, but | |
2958 | that is equivalent, since the value of "N" doesn't matter. */ | |
309714d4 | 2959 | if (!complete_type_or_maybe_complain (type, NULL_TREE, complain)) |
39fb9d72 DB |
2960 | return error_mark_node; |
2961 | ||
5ade1ed2 | 2962 | rval = build_new_1 (placement, type, nelts, init, use_global_new, complain); |
63c9a190 MM |
2963 | if (rval == error_mark_node) |
2964 | return error_mark_node; | |
2965 | ||
2966 | if (processing_template_decl) | |
c166b898 ILT |
2967 | { |
2968 | tree ret = build_raw_new_expr (orig_placement, type, orig_nelts, | |
2969 | orig_init, use_global_new); | |
2970 | release_tree_vector (orig_placement); | |
2971 | release_tree_vector (orig_init); | |
2972 | return ret; | |
2973 | } | |
63c9a190 MM |
2974 | |
2975 | /* Wrap it in a NOP_EXPR so warn_if_unused_value doesn't complain. */ | |
2976 | rval = build1 (NOP_EXPR, TREE_TYPE (rval), rval); | |
2977 | TREE_NO_WARNING (rval) = 1; | |
2978 | ||
2979 | return rval; | |
2980 | } | |
2981 | ||
2982 | /* Given a Java class, return a decl for the corresponding java.lang.Class. */ | |
2983 | ||
2984 | tree | |
2985 | build_java_class_ref (tree type) | |
2986 | { | |
2987 | tree name = NULL_TREE, class_decl; | |
2988 | static tree CL_suffix = NULL_TREE; | |
2989 | if (CL_suffix == NULL_TREE) | |
2990 | CL_suffix = get_identifier("class$"); | |
2991 | if (jclass_node == NULL_TREE) | |
2992 | { | |
2993 | jclass_node = IDENTIFIER_GLOBAL_VALUE (get_identifier ("jclass")); | |
2994 | if (jclass_node == NULL_TREE) | |
a3d536f1 VR |
2995 | { |
2996 | error ("call to Java constructor, while %<jclass%> undefined"); | |
2997 | return error_mark_node; | |
2998 | } | |
63c9a190 MM |
2999 | jclass_node = TREE_TYPE (jclass_node); |
3000 | } | |
3001 | ||
3002 | /* Mangle the class$ field. */ | |
3003 | { | |
3004 | tree field; | |
910ad8de | 3005 | for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field)) |
63c9a190 MM |
3006 | if (DECL_NAME (field) == CL_suffix) |
3007 | { | |
3008 | mangle_decl (field); | |
3009 | name = DECL_ASSEMBLER_NAME (field); | |
3010 | break; | |
3011 | } | |
3012 | if (!field) | |
a3d536f1 | 3013 | { |
d8a07487 | 3014 | error ("can%'t find %<class$%> in %qT", type); |
a3d536f1 VR |
3015 | return error_mark_node; |
3016 | } | |
3017 | } | |
63c9a190 MM |
3018 | |
3019 | class_decl = IDENTIFIER_GLOBAL_VALUE (name); | |
3020 | if (class_decl == NULL_TREE) | |
3021 | { | |
c2255bc4 AH |
3022 | class_decl = build_decl (input_location, |
3023 | VAR_DECL, name, TREE_TYPE (jclass_node)); | |
63c9a190 MM |
3024 | TREE_STATIC (class_decl) = 1; |
3025 | DECL_EXTERNAL (class_decl) = 1; | |
3026 | TREE_PUBLIC (class_decl) = 1; | |
3027 | DECL_ARTIFICIAL (class_decl) = 1; | |
3028 | DECL_IGNORED_P (class_decl) = 1; | |
3029 | pushdecl_top_level (class_decl); | |
3030 | make_decl_rtl (class_decl); | |
3031 | } | |
3032 | return class_decl; | |
3033 | } | |
8d08fdba | 3034 | \f |
f30432d7 | 3035 | static tree |
362efdc1 | 3036 | build_vec_delete_1 (tree base, tree maxindex, tree type, |
574cfaa4 JM |
3037 | special_function_kind auto_delete_vec, |
3038 | int use_global_delete, tsubst_flags_t complain) | |
f30432d7 MS |
3039 | { |
3040 | tree virtual_size; | |
e92cc029 | 3041 | tree ptype = build_pointer_type (type = complete_type (type)); |
f30432d7 MS |
3042 | tree size_exp = size_in_bytes (type); |
3043 | ||
3044 | /* Temporary variables used by the loop. */ | |
3045 | tree tbase, tbase_init; | |
3046 | ||
3047 | /* This is the body of the loop that implements the deletion of a | |
3048 | single element, and moves temp variables to next elements. */ | |
3049 | tree body; | |
3050 | ||
3051 | /* This is the LOOP_EXPR that governs the deletion of the elements. */ | |
c7b62f14 | 3052 | tree loop = 0; |
f30432d7 MS |
3053 | |
3054 | /* This is the thing that governs what to do after the loop has run. */ | |
3055 | tree deallocate_expr = 0; | |
3056 | ||
3057 | /* This is the BIND_EXPR which holds the outermost iterator of the | |
3058 | loop. It is convenient to set this variable up and test it before | |
3059 | executing any other code in the loop. | |
3060 | This is also the containing expression returned by this function. */ | |
3061 | tree controller = NULL_TREE; | |
5be014d5 | 3062 | tree tmp; |
f30432d7 | 3063 | |
b2153b98 | 3064 | /* We should only have 1-D arrays here. */ |
8dc2b103 | 3065 | gcc_assert (TREE_CODE (type) != ARRAY_TYPE); |
b2153b98 | 3066 | |
574cfaa4 JM |
3067 | if (base == error_mark_node || maxindex == error_mark_node) |
3068 | return error_mark_node; | |
3069 | ||
9e1e64ec | 3070 | if (! MAYBE_CLASS_TYPE_P (type) || TYPE_HAS_TRIVIAL_DESTRUCTOR (type)) |
c7b62f14 | 3071 | goto no_destructor; |
f30432d7 | 3072 | |
708cae97 | 3073 | /* The below is short by the cookie size. */ |
fed3cef0 RK |
3074 | virtual_size = size_binop (MULT_EXPR, size_exp, |
3075 | convert (sizetype, maxindex)); | |
f30432d7 | 3076 | |
46e8c075 | 3077 | tbase = create_temporary_var (ptype); |
5d49b6a7 RG |
3078 | tbase_init |
3079 | = cp_build_modify_expr (tbase, NOP_EXPR, | |
3080 | fold_build_pointer_plus_loc (input_location, | |
3081 | fold_convert (ptype, | |
3082 | base), | |
3083 | virtual_size), | |
3084 | complain); | |
574cfaa4 JM |
3085 | if (tbase_init == error_mark_node) |
3086 | return error_mark_node; | |
f293ce4b RS |
3087 | controller = build3 (BIND_EXPR, void_type_node, tbase, |
3088 | NULL_TREE, NULL_TREE); | |
f30432d7 | 3089 | TREE_SIDE_EFFECTS (controller) = 1; |
f30432d7 | 3090 | |
f293ce4b | 3091 | body = build1 (EXIT_EXPR, void_type_node, |
5cd88d68 RS |
3092 | build2 (EQ_EXPR, boolean_type_node, tbase, |
3093 | fold_convert (ptype, base))); | |
db3927fb | 3094 | tmp = fold_build1_loc (input_location, NEGATE_EXPR, sizetype, size_exp); |
5d49b6a7 | 3095 | tmp = fold_build_pointer_plus (tbase, tmp); |
574cfaa4 JM |
3096 | tmp = cp_build_modify_expr (tbase, NOP_EXPR, tmp, complain); |
3097 | if (tmp == error_mark_node) | |
3098 | return error_mark_node; | |
3099 | body = build_compound_expr (input_location, body, tmp); | |
3100 | tmp = build_delete (ptype, tbase, sfk_complete_destructor, | |
3101 | LOOKUP_NORMAL|LOOKUP_DESTRUCTOR, 1, | |
3102 | complain); | |
3103 | if (tmp == error_mark_node) | |
3104 | return error_mark_node; | |
3105 | body = build_compound_expr (input_location, body, tmp); | |
f30432d7 | 3106 | |
f293ce4b | 3107 | loop = build1 (LOOP_EXPR, void_type_node, body); |
c2255bc4 | 3108 | loop = build_compound_expr (input_location, tbase_init, loop); |
f30432d7 MS |
3109 | |
3110 | no_destructor: | |
e79a6b40 JM |
3111 | /* Delete the storage if appropriate. */ |
3112 | if (auto_delete_vec == sfk_deleting_destructor) | |
f30432d7 MS |
3113 | { |
3114 | tree base_tbd; | |
3115 | ||
708cae97 | 3116 | /* The below is short by the cookie size. */ |
fed3cef0 RK |
3117 | virtual_size = size_binop (MULT_EXPR, size_exp, |
3118 | convert (sizetype, maxindex)); | |
f30432d7 MS |
3119 | |
3120 | if (! TYPE_VEC_NEW_USES_COOKIE (type)) | |
3121 | /* no header */ | |
3122 | base_tbd = base; | |
3123 | else | |
3124 | { | |
834c6dff MM |
3125 | tree cookie_size; |
3126 | ||
46e995e0 | 3127 | cookie_size = targetm.cxx.get_cookie_size (type); |
574cfaa4 JM |
3128 | base_tbd = cp_build_binary_op (input_location, |
3129 | MINUS_EXPR, | |
3130 | cp_convert (string_type_node, | |
4b978f96 | 3131 | base, complain), |
574cfaa4 JM |
3132 | cookie_size, |
3133 | complain); | |
3134 | if (base_tbd == error_mark_node) | |
3135 | return error_mark_node; | |
4b978f96 | 3136 | base_tbd = cp_convert (ptype, base_tbd, complain); |
e92cc029 | 3137 | /* True size with header. */ |
834c6dff | 3138 | virtual_size = size_binop (PLUS_EXPR, virtual_size, cookie_size); |
f30432d7 | 3139 | } |
86f45d2c | 3140 | |
e79a6b40 JM |
3141 | deallocate_expr = build_op_delete_call (VEC_DELETE_EXPR, |
3142 | base_tbd, virtual_size, | |
3143 | use_global_delete & 1, | |
3144 | /*placement=*/NULL_TREE, | |
4b978f96 PC |
3145 | /*alloc_fn=*/NULL_TREE, |
3146 | complain); | |
f30432d7 MS |
3147 | } |
3148 | ||
c7b62f14 NS |
3149 | body = loop; |
3150 | if (!deallocate_expr) | |
3151 | ; | |
3152 | else if (!body) | |
3153 | body = deallocate_expr; | |
f30432d7 | 3154 | else |
c2255bc4 | 3155 | body = build_compound_expr (input_location, body, deallocate_expr); |
c8094d83 | 3156 | |
c7b62f14 NS |
3157 | if (!body) |
3158 | body = integer_zero_node; | |
c8094d83 | 3159 | |
f30432d7 | 3160 | /* Outermost wrapper: If pointer is null, punt. */ |
db3927fb AH |
3161 | body = fold_build3_loc (input_location, COND_EXPR, void_type_node, |
3162 | fold_build2_loc (input_location, | |
3163 | NE_EXPR, boolean_type_node, base, | |
7866705a | 3164 | convert (TREE_TYPE (base), |
6d96d7ff | 3165 | nullptr_node)), |
7866705a | 3166 | body, integer_zero_node); |
f30432d7 MS |
3167 | body = build1 (NOP_EXPR, void_type_node, body); |
3168 | ||
3169 | if (controller) | |
3170 | { | |
3171 | TREE_OPERAND (controller, 1) = body; | |
4e8dca1c | 3172 | body = controller; |
f30432d7 | 3173 | } |
4e8dca1c JM |
3174 | |
3175 | if (TREE_CODE (base) == SAVE_EXPR) | |
3176 | /* Pre-evaluate the SAVE_EXPR outside of the BIND_EXPR. */ | |
f293ce4b | 3177 | body = build2 (COMPOUND_EXPR, void_type_node, base, body); |
4e8dca1c | 3178 | |
574cfaa4 | 3179 | return convert_to_void (body, ICV_CAST, complain); |
f30432d7 MS |
3180 | } |
3181 | ||
c8094d83 | 3182 | /* Create an unnamed variable of the indicated TYPE. */ |
c395453c | 3183 | |
f1dedc31 | 3184 | tree |
362efdc1 | 3185 | create_temporary_var (tree type) |
8a72a046 | 3186 | { |
f1dedc31 | 3187 | tree decl; |
c8094d83 | 3188 | |
c2255bc4 AH |
3189 | decl = build_decl (input_location, |
3190 | VAR_DECL, NULL_TREE, type); | |
f1dedc31 MM |
3191 | TREE_USED (decl) = 1; |
3192 | DECL_ARTIFICIAL (decl) = 1; | |
f1dedc31 | 3193 | DECL_IGNORED_P (decl) = 1; |
b35d4555 | 3194 | DECL_CONTEXT (decl) = current_function_decl; |
f1dedc31 | 3195 | |
f1dedc31 | 3196 | return decl; |
8a72a046 MM |
3197 | } |
3198 | ||
f1dedc31 MM |
3199 | /* Create a new temporary variable of the indicated TYPE, initialized |
3200 | to INIT. | |
8a72a046 | 3201 | |
f1dedc31 MM |
3202 | It is not entered into current_binding_level, because that breaks |
3203 | things when it comes time to do final cleanups (which take place | |
3204 | "outside" the binding contour of the function). */ | |
3205 | ||
fe5b5c36 | 3206 | tree |
362efdc1 | 3207 | get_temp_regvar (tree type, tree init) |
f30432d7 | 3208 | { |
f1dedc31 | 3209 | tree decl; |
8a72a046 | 3210 | |
f1dedc31 | 3211 | decl = create_temporary_var (type); |
350fae66 | 3212 | add_decl_expr (decl); |
c8094d83 | 3213 | |
5ade1ed2 DG |
3214 | finish_expr_stmt (cp_build_modify_expr (decl, INIT_EXPR, init, |
3215 | tf_warning_or_error)); | |
8a72a046 | 3216 | |
f1dedc31 | 3217 | return decl; |
f30432d7 MS |
3218 | } |
3219 | ||
f1dedc31 MM |
3220 | /* `build_vec_init' returns tree structure that performs |
3221 | initialization of a vector of aggregate types. | |
8d08fdba | 3222 | |
9207099b JM |
3223 | BASE is a reference to the vector, of ARRAY_TYPE, or a pointer |
3224 | to the first element, of POINTER_TYPE. | |
a48cccea | 3225 | MAXINDEX is the maximum index of the array (one less than the |
9207099b | 3226 | number of elements). It is only used if BASE is a pointer or |
a48cccea | 3227 | TYPE_DOMAIN (TREE_TYPE (BASE)) == NULL_TREE. |
b84f4651 | 3228 | |
8d08fdba MS |
3229 | INIT is the (possibly NULL) initializer. |
3230 | ||
844ae01d JM |
3231 | If EXPLICIT_VALUE_INIT_P is true, then INIT must be NULL. All |
3232 | elements in the array are value-initialized. | |
b84f4651 | 3233 | |
8d08fdba MS |
3234 | FROM_ARRAY is 0 if we should init everything with INIT |
3235 | (i.e., every element initialized from INIT). | |
3236 | FROM_ARRAY is 1 if we should index into INIT in parallel | |
3237 | with initialization of DECL. | |
3238 | FROM_ARRAY is 2 if we should index into INIT in parallel, | |
3239 | but use assignment instead of initialization. */ | |
3240 | ||
3241 | tree | |
3db45ab5 | 3242 | build_vec_init (tree base, tree maxindex, tree init, |
844ae01d | 3243 | bool explicit_value_init_p, |
5ade1ed2 | 3244 | int from_array, tsubst_flags_t complain) |
8d08fdba MS |
3245 | { |
3246 | tree rval; | |
8a72a046 | 3247 | tree base2 = NULL_TREE; |
e833cb11 | 3248 | tree itype = NULL_TREE; |
8a72a046 | 3249 | tree iterator; |
9207099b | 3250 | /* The type of BASE. */ |
f30efcb7 | 3251 | tree atype = TREE_TYPE (base); |
f1dedc31 | 3252 | /* The type of an element in the array. */ |
f30efcb7 | 3253 | tree type = TREE_TYPE (atype); |
c8094d83 | 3254 | /* The element type reached after removing all outer array |
b5af3133 MM |
3255 | types. */ |
3256 | tree inner_elt_type; | |
f1dedc31 MM |
3257 | /* The type of a pointer to an element in the array. */ |
3258 | tree ptype; | |
3259 | tree stmt_expr; | |
3260 | tree compound_stmt; | |
3261 | int destroy_temps; | |
f5984164 | 3262 | tree try_block = NULL_TREE; |
8a72a046 | 3263 | int num_initialized_elts = 0; |
2a3398e1 | 3264 | bool is_global; |
fa2200cb JM |
3265 | tree const_init = NULL_TREE; |
3266 | tree obase = base; | |
f91352dc | 3267 | bool xvalue = false; |
574cfaa4 | 3268 | bool errors = false; |
c8094d83 | 3269 | |
9207099b | 3270 | if (TREE_CODE (atype) == ARRAY_TYPE && TYPE_DOMAIN (atype)) |
a48cccea JM |
3271 | maxindex = array_type_nelts (atype); |
3272 | ||
d2e312d7 PC |
3273 | if (maxindex == NULL_TREE || maxindex == error_mark_node |
3274 | || integer_all_onesp (maxindex)) | |
8d08fdba MS |
3275 | return error_mark_node; |
3276 | ||
844ae01d | 3277 | if (explicit_value_init_p) |
b84f4651 MM |
3278 | gcc_assert (!init); |
3279 | ||
9207099b | 3280 | inner_elt_type = strip_array_types (type); |
567ef749 JM |
3281 | |
3282 | /* Look through the TARGET_EXPR around a compound literal. */ | |
3283 | if (init && TREE_CODE (init) == TARGET_EXPR | |
5a4d8044 JM |
3284 | && TREE_CODE (TARGET_EXPR_INITIAL (init)) == CONSTRUCTOR |
3285 | && from_array != 2) | |
567ef749 JM |
3286 | init = TARGET_EXPR_INITIAL (init); |
3287 | ||
c8a3d889 | 3288 | if (init |
25357d1e | 3289 | && TREE_CODE (atype) == ARRAY_TYPE |
c8a3d889 | 3290 | && (from_array == 2 |
c8094d83 | 3291 | ? (!CLASS_TYPE_P (inner_elt_type) |
066ec0a4 | 3292 | || !TYPE_HAS_COMPLEX_COPY_ASSIGN (inner_elt_type)) |
c8a3d889 | 3293 | : !TYPE_NEEDS_CONSTRUCTING (type)) |
f30efcb7 JM |
3294 | && ((TREE_CODE (init) == CONSTRUCTOR |
3295 | /* Don't do this if the CONSTRUCTOR might contain something | |
3296 | that might throw and require us to clean up. */ | |
4038c495 | 3297 | && (VEC_empty (constructor_elt, CONSTRUCTOR_ELTS (init)) |
b5af3133 | 3298 | || ! TYPE_HAS_NONTRIVIAL_DESTRUCTOR (inner_elt_type))) |
f30efcb7 JM |
3299 | || from_array)) |
3300 | { | |
c32097d8 | 3301 | /* Do non-default initialization of trivial arrays resulting from |
f30efcb7 JM |
3302 | brace-enclosed initializers. In this case, digest_init and |
3303 | store_constructor will handle the semantics for us. */ | |
3304 | ||
f293ce4b | 3305 | stmt_expr = build2 (INIT_EXPR, atype, base, init); |
f30efcb7 JM |
3306 | return stmt_expr; |
3307 | } | |
3308 | ||
4b978f96 | 3309 | maxindex = cp_convert (ptrdiff_type_node, maxindex, complain); |
9207099b JM |
3310 | if (TREE_CODE (atype) == ARRAY_TYPE) |
3311 | { | |
3312 | ptype = build_pointer_type (type); | |
89fcabaf PC |
3313 | base = decay_conversion (base, complain); |
3314 | if (base == error_mark_node) | |
3315 | return error_mark_node; | |
4b978f96 | 3316 | base = cp_convert (ptype, base, complain); |
9207099b JM |
3317 | } |
3318 | else | |
3319 | ptype = atype; | |
8d08fdba | 3320 | |
f1dedc31 | 3321 | /* The code we are generating looks like: |
303b7406 | 3322 | ({ |
f1dedc31 | 3323 | T* t1 = (T*) base; |
f30efcb7 | 3324 | T* rval = t1; |
f1dedc31 MM |
3325 | ptrdiff_t iterator = maxindex; |
3326 | try { | |
4977bab6 | 3327 | for (; iterator != -1; --iterator) { |
f30efcb7 JM |
3328 | ... initialize *t1 ... |
3329 | ++t1; | |
4977bab6 | 3330 | } |
f1dedc31 | 3331 | } catch (...) { |
0cbd7506 | 3332 | ... destroy elements that were constructed ... |
f1dedc31 | 3333 | } |
303b7406 NS |
3334 | rval; |
3335 | }) | |
c8094d83 | 3336 | |
f1dedc31 MM |
3337 | We can omit the try and catch blocks if we know that the |
3338 | initialization will never throw an exception, or if the array | |
f30efcb7 | 3339 | elements do not have destructors. We can omit the loop completely if |
c8094d83 | 3340 | the elements of the array do not have constructors. |
f1dedc31 MM |
3341 | |
3342 | We actually wrap the entire body of the above in a STMT_EXPR, for | |
c8094d83 | 3343 | tidiness. |
f1dedc31 MM |
3344 | |
3345 | When copying from array to another, when the array elements have | |
3346 | only trivial copy constructors, we should use __builtin_memcpy | |
3347 | rather than generating a loop. That way, we could take advantage | |
3b426391 | 3348 | of whatever cleverness the back end has for dealing with copies |
f1dedc31 MM |
3349 | of blocks of memory. */ |
3350 | ||
2a3398e1 | 3351 | is_global = begin_init_stmts (&stmt_expr, &compound_stmt); |
f2c5f623 | 3352 | destroy_temps = stmts_are_full_exprs_p (); |
ae499cce | 3353 | current_stmt_tree ()->stmts_are_full_exprs_p = 0; |
f30efcb7 | 3354 | rval = get_temp_regvar (ptype, base); |
f1dedc31 | 3355 | base = get_temp_regvar (ptype, rval); |
8a72a046 | 3356 | iterator = get_temp_regvar (ptrdiff_type_node, maxindex); |
8d08fdba | 3357 | |
5a4d8044 JM |
3358 | /* If initializing one array from another, initialize element by |
3359 | element. We rely upon the below calls to do the argument | |
3360 | checking. Evaluate the initializer before entering the try block. */ | |
3361 | if (from_array && init && TREE_CODE (init) != CONSTRUCTOR) | |
3362 | { | |
f91352dc JM |
3363 | if (lvalue_kind (init) & clk_rvalueref) |
3364 | xvalue = true; | |
89fcabaf PC |
3365 | base2 = decay_conversion (init, complain); |
3366 | if (base2 == error_mark_node) | |
3367 | return error_mark_node; | |
5a4d8044 JM |
3368 | itype = TREE_TYPE (base2); |
3369 | base2 = get_temp_regvar (itype, base2); | |
3370 | itype = TREE_TYPE (itype); | |
3371 | } | |
3372 | ||
8a72a046 | 3373 | /* Protect the entire array initialization so that we can destroy |
f30efcb7 JM |
3374 | the partially constructed array if an exception is thrown. |
3375 | But don't do this if we're assigning. */ | |
3376 | if (flag_exceptions && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) | |
3377 | && from_array != 2) | |
ed5511d9 MM |
3378 | { |
3379 | try_block = begin_try_block (); | |
ed5511d9 | 3380 | } |
8a72a046 | 3381 | |
1f65a8c8 JM |
3382 | /* If the initializer is {}, then all elements are initialized from {}. |
3383 | But for non-classes, that's the same as value-initialization. */ | |
3384 | if (init && BRACE_ENCLOSED_INITIALIZER_P (init) | |
3385 | && CONSTRUCTOR_NELTS (init) == 0) | |
3386 | { | |
3387 | if (CLASS_TYPE_P (type)) | |
3388 | /* Leave init alone. */; | |
3389 | else | |
3390 | { | |
3391 | init = NULL_TREE; | |
3392 | explicit_value_init_p = true; | |
3393 | } | |
3394 | } | |
3395 | ||
fa2200cb JM |
3396 | /* Maybe pull out constant value when from_array? */ |
3397 | ||
1f65a8c8 | 3398 | else if (init != NULL_TREE && TREE_CODE (init) == CONSTRUCTOR) |
8d08fdba | 3399 | { |
c32097d8 | 3400 | /* Do non-default initialization of non-trivial arrays resulting from |
f30efcb7 | 3401 | brace-enclosed initializers. */ |
4038c495 | 3402 | unsigned HOST_WIDE_INT idx; |
fa2200cb JM |
3403 | tree field, elt; |
3404 | /* Should we try to create a constant initializer? */ | |
fe7eb484 JM |
3405 | bool try_const = (TREE_CODE (atype) == ARRAY_TYPE |
3406 | && (literal_type_p (inner_elt_type) | |
3407 | || TYPE_HAS_CONSTEXPR_CTOR (inner_elt_type))); | |
b25dd954 JM |
3408 | /* If the constructor already has the array type, it's been through |
3409 | digest_init, so we shouldn't try to do anything more. */ | |
3410 | bool digested = same_type_p (atype, TREE_TYPE (init)); | |
fa2200cb JM |
3411 | bool saw_non_const = false; |
3412 | bool saw_const = false; | |
3413 | /* If we're initializing a static array, we want to do static | |
3414 | initialization of any elements with constant initializers even if | |
3415 | some are non-constant. */ | |
3416 | bool do_static_init = (DECL_P (obase) && TREE_STATIC (obase)); | |
3417 | VEC(constructor_elt,gc) *new_vec; | |
094fe153 JM |
3418 | from_array = 0; |
3419 | ||
fa2200cb JM |
3420 | if (try_const) |
3421 | new_vec = VEC_alloc (constructor_elt, gc, CONSTRUCTOR_NELTS (init)); | |
3422 | else | |
3423 | new_vec = NULL; | |
3424 | ||
3425 | FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (init), idx, field, elt) | |
8d08fdba | 3426 | { |
f1dedc31 | 3427 | tree baseref = build1 (INDIRECT_REF, type, base); |
fa2200cb | 3428 | tree one_init; |
8d08fdba | 3429 | |
8a72a046 | 3430 | num_initialized_elts++; |
8d08fdba | 3431 | |
67c03833 | 3432 | current_stmt_tree ()->stmts_are_full_exprs_p = 1; |
b25dd954 JM |
3433 | if (digested) |
3434 | one_init = build2 (INIT_EXPR, type, baseref, elt); | |
3435 | else if (MAYBE_CLASS_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE) | |
fa2200cb | 3436 | one_init = build_aggr_init (baseref, elt, 0, complain); |
8a72a046 | 3437 | else |
fa2200cb JM |
3438 | one_init = cp_build_modify_expr (baseref, NOP_EXPR, |
3439 | elt, complain); | |
574cfaa4 JM |
3440 | if (one_init == error_mark_node) |
3441 | errors = true; | |
fa2200cb JM |
3442 | if (try_const) |
3443 | { | |
3444 | tree e = one_init; | |
3445 | if (TREE_CODE (e) == EXPR_STMT) | |
3446 | e = TREE_OPERAND (e, 0); | |
3447 | if (TREE_CODE (e) == CONVERT_EXPR | |
3448 | && VOID_TYPE_P (TREE_TYPE (e))) | |
3449 | e = TREE_OPERAND (e, 0); | |
3450 | e = maybe_constant_init (e); | |
3451 | if (reduced_constant_expression_p (e)) | |
3452 | { | |
3453 | CONSTRUCTOR_APPEND_ELT (new_vec, field, e); | |
3454 | if (do_static_init) | |
3455 | one_init = NULL_TREE; | |
3456 | else | |
3457 | one_init = build2 (INIT_EXPR, type, baseref, e); | |
3458 | saw_const = true; | |
3459 | } | |
3460 | else | |
3461 | { | |
3462 | if (do_static_init) | |
3463 | CONSTRUCTOR_APPEND_ELT (new_vec, field, | |
3464 | build_zero_init (TREE_TYPE (e), | |
3465 | NULL_TREE, true)); | |
3466 | saw_non_const = true; | |
3467 | } | |
3468 | } | |
3469 | ||
3470 | if (one_init) | |
3471 | finish_expr_stmt (one_init); | |
67c03833 | 3472 | current_stmt_tree ()->stmts_are_full_exprs_p = 0; |
8a72a046 | 3473 | |
574cfaa4 JM |
3474 | one_init = cp_build_unary_op (PREINCREMENT_EXPR, base, 0, complain); |
3475 | if (one_init == error_mark_node) | |
3476 | errors = true; | |
3477 | else | |
3478 | finish_expr_stmt (one_init); | |
3479 | ||
3480 | one_init = cp_build_unary_op (PREDECREMENT_EXPR, iterator, 0, | |
3481 | complain); | |
3482 | if (one_init == error_mark_node) | |
3483 | errors = true; | |
3484 | else | |
3485 | finish_expr_stmt (one_init); | |
8d08fdba | 3486 | } |
8d08fdba | 3487 | |
fa2200cb JM |
3488 | if (try_const) |
3489 | { | |
3490 | if (!saw_non_const) | |
3491 | const_init = build_constructor (atype, new_vec); | |
3492 | else if (do_static_init && saw_const) | |
3493 | DECL_INITIAL (obase) = build_constructor (atype, new_vec); | |
3494 | else | |
3495 | VEC_free (constructor_elt, gc, new_vec); | |
3496 | } | |
3497 | ||
8a72a046 MM |
3498 | /* Clear out INIT so that we don't get confused below. */ |
3499 | init = NULL_TREE; | |
8d08fdba | 3500 | } |
8a72a046 | 3501 | else if (from_array) |
8d08fdba | 3502 | { |
8a72a046 | 3503 | if (init) |
5a4d8044 | 3504 | /* OK, we set base2 above. */; |
95552437 | 3505 | else if (CLASS_TYPE_P (type) |
8a72a046 MM |
3506 | && ! TYPE_HAS_DEFAULT_CONSTRUCTOR (type)) |
3507 | { | |
5ade1ed2 DG |
3508 | if (complain & tf_error) |
3509 | error ("initializer ends prematurely"); | |
574cfaa4 | 3510 | errors = true; |
8a72a046 MM |
3511 | } |
3512 | } | |
8d08fdba | 3513 | |
8a72a046 MM |
3514 | /* Now, default-initialize any remaining elements. We don't need to |
3515 | do that if a) the type does not need constructing, or b) we've | |
094fe153 JM |
3516 | already initialized all the elements. |
3517 | ||
3518 | We do need to keep going if we're copying an array. */ | |
3519 | ||
3520 | if (from_array | |
1f65a8c8 | 3521 | || ((type_build_ctor_call (type) || init || explicit_value_init_p) |
665f2503 | 3522 | && ! (host_integerp (maxindex, 0) |
05bccae2 | 3523 | && (num_initialized_elts |
665f2503 | 3524 | == tree_low_cst (maxindex, 0) + 1)))) |
8a72a046 | 3525 | { |
37e05cd5 | 3526 | /* If the ITERATOR is equal to -1, then we don't have to loop; |
8a72a046 | 3527 | we've already initialized all the elements. */ |
4977bab6 | 3528 | tree for_stmt; |
f1dedc31 | 3529 | tree elt_init; |
b84f4651 | 3530 | tree to; |
f1dedc31 | 3531 | |
3f43ac31 | 3532 | for_stmt = begin_for_stmt (NULL_TREE, NULL_TREE); |
4977bab6 | 3533 | finish_for_init_stmt (for_stmt); |
aab384ae RG |
3534 | finish_for_cond (build2 (NE_EXPR, boolean_type_node, iterator, |
3535 | build_int_cst (TREE_TYPE (iterator), -1)), | |
4977bab6 | 3536 | for_stmt); |
574cfaa4 JM |
3537 | elt_init = cp_build_unary_op (PREDECREMENT_EXPR, iterator, 0, |
3538 | complain); | |
3539 | if (elt_init == error_mark_node) | |
3540 | errors = true; | |
3541 | finish_for_expr (elt_init, for_stmt); | |
8d08fdba | 3542 | |
b84f4651 MM |
3543 | to = build1 (INDIRECT_REF, type, base); |
3544 | ||
8d08fdba MS |
3545 | if (from_array) |
3546 | { | |
8d08fdba MS |
3547 | tree from; |
3548 | ||
3549 | if (base2) | |
f91352dc JM |
3550 | { |
3551 | from = build1 (INDIRECT_REF, itype, base2); | |
3552 | if (xvalue) | |
3553 | from = move (from); | |
3554 | } | |
8d08fdba MS |
3555 | else |
3556 | from = NULL_TREE; | |
3557 | ||
3558 | if (from_array == 2) | |
5ade1ed2 DG |
3559 | elt_init = cp_build_modify_expr (to, NOP_EXPR, from, |
3560 | complain); | |
95552437 | 3561 | else if (type_build_ctor_call (type)) |
5ade1ed2 | 3562 | elt_init = build_aggr_init (to, from, 0, complain); |
8d08fdba | 3563 | else if (from) |
5ade1ed2 DG |
3564 | elt_init = cp_build_modify_expr (to, NOP_EXPR, from, |
3565 | complain); | |
8d08fdba | 3566 | else |
8dc2b103 | 3567 | gcc_unreachable (); |
8d08fdba MS |
3568 | } |
3569 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3570 | { | |
3571 | if (init != 0) | |
f30efcb7 JM |
3572 | sorry |
3573 | ("cannot initialize multi-dimensional array with initializer"); | |
3574 | elt_init = build_vec_init (build1 (INDIRECT_REF, type, base), | |
3db45ab5 | 3575 | 0, 0, |
844ae01d | 3576 | explicit_value_init_p, |
5ade1ed2 | 3577 | 0, complain); |
f1dedc31 | 3578 | } |
844ae01d | 3579 | else if (explicit_value_init_p) |
309714d4 JM |
3580 | { |
3581 | elt_init = build_value_init (type, complain); | |
574cfaa4 | 3582 | if (elt_init != error_mark_node) |
309714d4 JM |
3583 | elt_init = build2 (INIT_EXPR, type, to, elt_init); |
3584 | } | |
f1dedc31 | 3585 | else |
844ae01d | 3586 | { |
1f65a8c8 JM |
3587 | gcc_assert (type_build_ctor_call (type) || init); |
3588 | if (CLASS_TYPE_P (type)) | |
3589 | elt_init = build_aggr_init (to, init, 0, complain); | |
3590 | else | |
3591 | { | |
3592 | if (TREE_CODE (init) == TREE_LIST) | |
3593 | init = build_x_compound_expr_from_list (init, ELK_INIT, | |
3594 | complain); | |
3595 | elt_init = build2 (INIT_EXPR, type, to, init); | |
3596 | } | |
844ae01d | 3597 | } |
c8094d83 | 3598 | |
574cfaa4 JM |
3599 | if (elt_init == error_mark_node) |
3600 | errors = true; | |
3601 | ||
2a3398e1 NS |
3602 | current_stmt_tree ()->stmts_are_full_exprs_p = 1; |
3603 | finish_expr_stmt (elt_init); | |
3604 | current_stmt_tree ()->stmts_are_full_exprs_p = 0; | |
8d08fdba | 3605 | |
5ade1ed2 DG |
3606 | finish_expr_stmt (cp_build_unary_op (PREINCREMENT_EXPR, base, 0, |
3607 | complain)); | |
8d08fdba | 3608 | if (base2) |
5ade1ed2 DG |
3609 | finish_expr_stmt (cp_build_unary_op (PREINCREMENT_EXPR, base2, 0, |
3610 | complain)); | |
0fac6b0b | 3611 | |
4977bab6 | 3612 | finish_for_stmt (for_stmt); |
8d08fdba | 3613 | } |
8a72a046 MM |
3614 | |
3615 | /* Make sure to cleanup any partially constructed elements. */ | |
f30efcb7 JM |
3616 | if (flag_exceptions && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) |
3617 | && from_array != 2) | |
f1dedc31 MM |
3618 | { |
3619 | tree e; | |
ba47d38d AH |
3620 | tree m = cp_build_binary_op (input_location, |
3621 | MINUS_EXPR, maxindex, iterator, | |
5ade1ed2 | 3622 | complain); |
b2153b98 KL |
3623 | |
3624 | /* Flatten multi-dimensional array since build_vec_delete only | |
3625 | expects one-dimensional array. */ | |
3626 | if (TREE_CODE (type) == ARRAY_TYPE) | |
ba47d38d AH |
3627 | m = cp_build_binary_op (input_location, |
3628 | MULT_EXPR, m, | |
5ade1ed2 DG |
3629 | array_type_nelts_total (type), |
3630 | complain); | |
8d08fdba | 3631 | |
ed5511d9 | 3632 | finish_cleanup_try_block (try_block); |
c8094d83 | 3633 | e = build_vec_delete_1 (rval, m, |
e79a6b40 | 3634 | inner_elt_type, sfk_complete_destructor, |
574cfaa4 JM |
3635 | /*use_global_delete=*/0, complain); |
3636 | if (e == error_mark_node) | |
3637 | errors = true; | |
f1dedc31 MM |
3638 | finish_cleanup (e, try_block); |
3639 | } | |
3640 | ||
303b7406 NS |
3641 | /* The value of the array initialization is the array itself, RVAL |
3642 | is a pointer to the first element. */ | |
325c3691 | 3643 | finish_stmt_expr_expr (rval, stmt_expr); |
f1dedc31 | 3644 | |
2a3398e1 | 3645 | stmt_expr = finish_init_stmts (is_global, stmt_expr, compound_stmt); |
303b7406 | 3646 | |
9207099b JM |
3647 | /* Now make the result have the correct type. */ |
3648 | if (TREE_CODE (atype) == ARRAY_TYPE) | |
3649 | { | |
3650 | atype = build_pointer_type (atype); | |
3651 | stmt_expr = build1 (NOP_EXPR, atype, stmt_expr); | |
dd865ef6 | 3652 | stmt_expr = cp_build_indirect_ref (stmt_expr, RO_NULL, complain); |
311fa510 | 3653 | TREE_NO_WARNING (stmt_expr) = 1; |
9207099b | 3654 | } |
c8094d83 | 3655 | |
ae499cce | 3656 | current_stmt_tree ()->stmts_are_full_exprs_p = destroy_temps; |
fa2200cb JM |
3657 | |
3658 | if (const_init) | |
3659 | return build2 (INIT_EXPR, atype, obase, const_init); | |
574cfaa4 JM |
3660 | if (errors) |
3661 | return error_mark_node; | |
f1dedc31 | 3662 | return stmt_expr; |
8d08fdba MS |
3663 | } |
3664 | ||
86f45d2c MM |
3665 | /* Call the DTOR_KIND destructor for EXP. FLAGS are as for |
3666 | build_delete. */ | |
298d6f60 MM |
3667 | |
3668 | static tree | |
574cfaa4 JM |
3669 | build_dtor_call (tree exp, special_function_kind dtor_kind, int flags, |
3670 | tsubst_flags_t complain) | |
298d6f60 | 3671 | { |
86f45d2c | 3672 | tree name; |
ee76b931 | 3673 | tree fn; |
86f45d2c MM |
3674 | switch (dtor_kind) |
3675 | { | |
3676 | case sfk_complete_destructor: | |
3677 | name = complete_dtor_identifier; | |
3678 | break; | |
3679 | ||
3680 | case sfk_base_destructor: | |
3681 | name = base_dtor_identifier; | |
3682 | break; | |
3683 | ||
3684 | case sfk_deleting_destructor: | |
3685 | name = deleting_dtor_identifier; | |
3686 | break; | |
3687 | ||
3688 | default: | |
8dc2b103 | 3689 | gcc_unreachable (); |
86f45d2c | 3690 | } |
ee76b931 | 3691 | fn = lookup_fnfields (TREE_TYPE (exp), name, /*protect=*/2); |
c8094d83 | 3692 | return build_new_method_call (exp, fn, |
c166b898 | 3693 | /*args=*/NULL, |
ee76b931 | 3694 | /*conversion_path=*/NULL_TREE, |
63c9a190 | 3695 | flags, |
5ade1ed2 | 3696 | /*fn_p=*/NULL, |
574cfaa4 | 3697 | complain); |
298d6f60 MM |
3698 | } |
3699 | ||
8d08fdba MS |
3700 | /* Generate a call to a destructor. TYPE is the type to cast ADDR to. |
3701 | ADDR is an expression which yields the store to be destroyed. | |
86f45d2c MM |
3702 | AUTO_DELETE is the name of the destructor to call, i.e., either |
3703 | sfk_complete_destructor, sfk_base_destructor, or | |
3704 | sfk_deleting_destructor. | |
8d08fdba MS |
3705 | |
3706 | FLAGS is the logical disjunction of zero or more LOOKUP_ | |
ade3dc07 | 3707 | flags. See cp-tree.h for more info. */ |
e92cc029 | 3708 | |
8d08fdba | 3709 | tree |
362efdc1 | 3710 | build_delete (tree type, tree addr, special_function_kind auto_delete, |
574cfaa4 | 3711 | int flags, int use_global_delete, tsubst_flags_t complain) |
8d08fdba | 3712 | { |
8d08fdba | 3713 | tree expr; |
8d08fdba MS |
3714 | |
3715 | if (addr == error_mark_node) | |
3716 | return error_mark_node; | |
3717 | ||
3718 | /* Can happen when CURRENT_EXCEPTION_OBJECT gets its type | |
3719 | set to `error_mark_node' before it gets properly cleaned up. */ | |
3720 | if (type == error_mark_node) | |
3721 | return error_mark_node; | |
3722 | ||
3723 | type = TYPE_MAIN_VARIANT (type); | |
3724 | ||
03a904b5 JJ |
3725 | addr = mark_rvalue_use (addr); |
3726 | ||
8d08fdba MS |
3727 | if (TREE_CODE (type) == POINTER_TYPE) |
3728 | { | |
b1e5b86c GB |
3729 | bool complete_p = true; |
3730 | ||
2986ae00 | 3731 | type = TYPE_MAIN_VARIANT (TREE_TYPE (type)); |
8d08fdba MS |
3732 | if (TREE_CODE (type) == ARRAY_TYPE) |
3733 | goto handle_array; | |
23b4deba | 3734 | |
b1e5b86c GB |
3735 | /* We don't want to warn about delete of void*, only other |
3736 | incomplete types. Deleting other incomplete types | |
3737 | invokes undefined behavior, but it is not ill-formed, so | |
3738 | compile to something that would even do The Right Thing | |
3739 | (TM) should the type have a trivial dtor and no delete | |
3740 | operator. */ | |
3741 | if (!VOID_TYPE_P (type)) | |
8d08fdba | 3742 | { |
b1e5b86c GB |
3743 | complete_type (type); |
3744 | if (!COMPLETE_TYPE_P (type)) | |
3745 | { | |
574cfaa4 JM |
3746 | if ((complain & tf_warning) |
3747 | && warning (0, "possible problem detected in invocation of " | |
3748 | "delete operator:")) | |
71205d17 MLI |
3749 | { |
3750 | cxx_incomplete_type_diagnostic (addr, type, DK_WARNING); | |
1f5b3869 | 3751 | inform (input_location, "neither the destructor nor the class-specific " |
71205d17 | 3752 | "operator delete will be called, even if they are " |
d8a07487 | 3753 | "declared when the class is defined"); |
71205d17 | 3754 | } |
b1e5b86c GB |
3755 | complete_p = false; |
3756 | } | |
e2ab8a0f JW |
3757 | else if (auto_delete == sfk_deleting_destructor && warn_delnonvdtor |
3758 | && MAYBE_CLASS_TYPE_P (type) && !CLASSTYPE_FINAL (type) | |
3759 | && TYPE_POLYMORPHIC_P (type)) | |
014ab419 JW |
3760 | { |
3761 | tree dtor; | |
3762 | dtor = CLASSTYPE_DESTRUCTORS (type); | |
3763 | if (!dtor || !DECL_VINDEX (dtor)) | |
3764 | { | |
3765 | if (CLASSTYPE_PURE_VIRTUALS (type)) | |
3766 | warning (OPT_Wdelete_non_virtual_dtor, | |
3767 | "deleting object of abstract class type %qT" | |
3768 | " which has non-virtual destructor" | |
3769 | " will cause undefined behaviour", type); | |
3770 | else | |
3771 | warning (OPT_Wdelete_non_virtual_dtor, | |
3772 | "deleting object of polymorphic class type %qT" | |
3773 | " which has non-virtual destructor" | |
3774 | " might cause undefined behaviour", type); | |
3775 | } | |
3776 | } | |
8d08fdba | 3777 | } |
9e1e64ec | 3778 | if (VOID_TYPE_P (type) || !complete_p || !MAYBE_CLASS_TYPE_P (type)) |
b1e5b86c GB |
3779 | /* Call the builtin operator delete. */ |
3780 | return build_builtin_delete_call (addr); | |
8d08fdba MS |
3781 | if (TREE_SIDE_EFFECTS (addr)) |
3782 | addr = save_expr (addr); | |
2986ae00 | 3783 | |
f4f206f4 | 3784 | /* Throw away const and volatile on target type of addr. */ |
4b978f96 | 3785 | addr = convert_force (build_pointer_type (type), addr, 0, complain); |
8d08fdba MS |
3786 | } |
3787 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
3788 | { | |
3789 | handle_array: | |
c8094d83 | 3790 | |
c407792d RK |
3791 | if (TYPE_DOMAIN (type) == NULL_TREE) |
3792 | { | |
574cfaa4 JM |
3793 | if (complain & tf_error) |
3794 | error ("unknown array size in delete"); | |
c407792d RK |
3795 | return error_mark_node; |
3796 | } | |
8d08fdba | 3797 | return build_vec_delete (addr, array_type_nelts (type), |
574cfaa4 | 3798 | auto_delete, use_global_delete, complain); |
8d08fdba MS |
3799 | } |
3800 | else | |
3801 | { | |
3802 | /* Don't check PROTECT here; leave that decision to the | |
3803 | destructor. If the destructor is accessible, call it, | |
3804 | else report error. */ | |
574cfaa4 JM |
3805 | addr = cp_build_addr_expr (addr, complain); |
3806 | if (addr == error_mark_node) | |
3807 | return error_mark_node; | |
8d08fdba MS |
3808 | if (TREE_SIDE_EFFECTS (addr)) |
3809 | addr = save_expr (addr); | |
3810 | ||
4b978f96 | 3811 | addr = convert_force (build_pointer_type (type), addr, 0, complain); |
8d08fdba MS |
3812 | } |
3813 | ||
9e1e64ec | 3814 | gcc_assert (MAYBE_CLASS_TYPE_P (type)); |
8d08fdba | 3815 | |
834c6dff | 3816 | if (TYPE_HAS_TRIVIAL_DESTRUCTOR (type)) |
8d08fdba | 3817 | { |
60696c53 | 3818 | if (auto_delete != sfk_deleting_destructor) |
8d08fdba MS |
3819 | return void_zero_node; |
3820 | ||
3db45ab5 MS |
3821 | return build_op_delete_call (DELETE_EXPR, addr, |
3822 | cxx_sizeof_nowarn (type), | |
63c9a190 MM |
3823 | use_global_delete, |
3824 | /*placement=*/NULL_TREE, | |
4b978f96 PC |
3825 | /*alloc_fn=*/NULL_TREE, |
3826 | complain); | |
8d08fdba | 3827 | } |
ade3dc07 | 3828 | else |
8d08fdba | 3829 | { |
6f06d231 | 3830 | tree head = NULL_TREE; |
700f8a87 | 3831 | tree do_delete = NULL_TREE; |
bd6dd845 | 3832 | tree ifexp; |
700f8a87 | 3833 | |
9f4faeae MM |
3834 | if (CLASSTYPE_LAZY_DESTRUCTOR (type)) |
3835 | lazily_declare_fn (sfk_destructor, type); | |
ade3dc07 | 3836 | |
52682a1b MM |
3837 | /* For `::delete x', we must not use the deleting destructor |
3838 | since then we would not be sure to get the global `operator | |
3839 | delete'. */ | |
86f45d2c | 3840 | if (use_global_delete && auto_delete == sfk_deleting_destructor) |
700f8a87 | 3841 | { |
1b4a93f7 MM |
3842 | /* We will use ADDR multiple times so we must save it. */ |
3843 | addr = save_expr (addr); | |
6f06d231 | 3844 | head = get_target_expr (build_headof (addr)); |
c6002625 | 3845 | /* Delete the object. */ |
6f06d231 | 3846 | do_delete = build_builtin_delete_call (head); |
86f45d2c MM |
3847 | /* Otherwise, treat this like a complete object destructor |
3848 | call. */ | |
3849 | auto_delete = sfk_complete_destructor; | |
700f8a87 | 3850 | } |
52682a1b MM |
3851 | /* If the destructor is non-virtual, there is no deleting |
3852 | variant. Instead, we must explicitly call the appropriate | |
3853 | `operator delete' here. */ | |
3854 | else if (!DECL_VIRTUAL_P (CLASSTYPE_DESTRUCTORS (type)) | |
3855 | && auto_delete == sfk_deleting_destructor) | |
3856 | { | |
1b4a93f7 MM |
3857 | /* We will use ADDR multiple times so we must save it. */ |
3858 | addr = save_expr (addr); | |
3859 | /* Build the call. */ | |
52682a1b MM |
3860 | do_delete = build_op_delete_call (DELETE_EXPR, |
3861 | addr, | |
ea793912 | 3862 | cxx_sizeof_nowarn (type), |
5bd61841 | 3863 | /*global_p=*/false, |
63c9a190 | 3864 | /*placement=*/NULL_TREE, |
4b978f96 PC |
3865 | /*alloc_fn=*/NULL_TREE, |
3866 | complain); | |
52682a1b MM |
3867 | /* Call the complete object destructor. */ |
3868 | auto_delete = sfk_complete_destructor; | |
3869 | } | |
e3fe84e5 JM |
3870 | else if (auto_delete == sfk_deleting_destructor |
3871 | && TYPE_GETS_REG_DELETE (type)) | |
3872 | { | |
3873 | /* Make sure we have access to the member op delete, even though | |
3874 | we'll actually be calling it from the destructor. */ | |
ea793912 | 3875 | build_op_delete_call (DELETE_EXPR, addr, cxx_sizeof_nowarn (type), |
3db45ab5 | 3876 | /*global_p=*/false, |
63c9a190 | 3877 | /*placement=*/NULL_TREE, |
4b978f96 PC |
3878 | /*alloc_fn=*/NULL_TREE, |
3879 | complain); | |
e3fe84e5 | 3880 | } |
8d08fdba | 3881 | |
574cfaa4 JM |
3882 | expr = build_dtor_call (cp_build_indirect_ref (addr, RO_NULL, complain), |
3883 | auto_delete, flags, complain); | |
3884 | if (expr == error_mark_node) | |
3885 | return error_mark_node; | |
bd6dd845 | 3886 | if (do_delete) |
f293ce4b | 3887 | expr = build2 (COMPOUND_EXPR, void_type_node, expr, do_delete); |
9e9ff709 | 3888 | |
6f06d231 JM |
3889 | /* We need to calculate this before the dtor changes the vptr. */ |
3890 | if (head) | |
3891 | expr = build2 (COMPOUND_EXPR, void_type_node, head, expr); | |
3892 | ||
bd6dd845 MS |
3893 | if (flags & LOOKUP_DESTRUCTOR) |
3894 | /* Explicit destructor call; don't check for null pointer. */ | |
3895 | ifexp = integer_one_node; | |
8d08fdba | 3896 | else |
574cfaa4 JM |
3897 | { |
3898 | /* Handle deleting a null pointer. */ | |
3899 | ifexp = fold (cp_build_binary_op (input_location, | |
6d96d7ff | 3900 | NE_EXPR, addr, nullptr_node, |
574cfaa4 JM |
3901 | complain)); |
3902 | if (ifexp == error_mark_node) | |
3903 | return error_mark_node; | |
3904 | } | |
8d08fdba | 3905 | |
bd6dd845 | 3906 | if (ifexp != integer_one_node) |
f293ce4b RS |
3907 | expr = build3 (COND_EXPR, void_type_node, |
3908 | ifexp, expr, void_zero_node); | |
8d08fdba | 3909 | |
8d08fdba MS |
3910 | return expr; |
3911 | } | |
ade3dc07 | 3912 | } |
8d08fdba | 3913 | |
ade3dc07 JM |
3914 | /* At the beginning of a destructor, push cleanups that will call the |
3915 | destructors for our base classes and members. | |
2a2480e1 | 3916 | |
a29e1034 | 3917 | Called from begin_destructor_body. */ |
8d08fdba | 3918 | |
ade3dc07 | 3919 | void |
edaf3e03 | 3920 | push_base_cleanups (void) |
ade3dc07 | 3921 | { |
fa743e8c NS |
3922 | tree binfo, base_binfo; |
3923 | int i; | |
ade3dc07 JM |
3924 | tree member; |
3925 | tree expr; | |
d4e6fecb | 3926 | VEC(tree,gc) *vbases; |
8d08fdba | 3927 | |
ade3dc07 | 3928 | /* Run destructors for all virtual baseclasses. */ |
5775a06a | 3929 | if (CLASSTYPE_VBASECLASSES (current_class_type)) |
ade3dc07 | 3930 | { |
ade3dc07 | 3931 | tree cond = (condition_conversion |
f293ce4b RS |
3932 | (build2 (BIT_AND_EXPR, integer_type_node, |
3933 | current_in_charge_parm, | |
3934 | integer_two_node))); | |
8d08fdba | 3935 | |
58c42dc2 | 3936 | /* The CLASSTYPE_VBASECLASSES vector is in initialization |
ade3dc07 | 3937 | order, which is also the right order for pushing cleanups. */ |
9ba5ff0f NS |
3938 | for (vbases = CLASSTYPE_VBASECLASSES (current_class_type), i = 0; |
3939 | VEC_iterate (tree, vbases, i, base_binfo); i++) | |
8d08fdba | 3940 | { |
9ba5ff0f | 3941 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (BINFO_TYPE (base_binfo))) |
8d08fdba | 3942 | { |
c8094d83 | 3943 | expr = build_special_member_call (current_class_ref, |
4ba126e4 | 3944 | base_dtor_identifier, |
c166b898 | 3945 | NULL, |
9ba5ff0f | 3946 | base_binfo, |
c8094d83 | 3947 | (LOOKUP_NORMAL |
5ade1ed2 DG |
3948 | | LOOKUP_NONVIRTUAL), |
3949 | tf_warning_or_error); | |
f293ce4b RS |
3950 | expr = build3 (COND_EXPR, void_type_node, cond, |
3951 | expr, void_zero_node); | |
ade3dc07 | 3952 | finish_decl_cleanup (NULL_TREE, expr); |
8d08fdba MS |
3953 | } |
3954 | } | |
ade3dc07 JM |
3955 | } |
3956 | ||
ade3dc07 | 3957 | /* Take care of the remaining baseclasses. */ |
fa743e8c NS |
3958 | for (binfo = TYPE_BINFO (current_class_type), i = 0; |
3959 | BINFO_BASE_ITERATE (binfo, i, base_binfo); i++) | |
ade3dc07 | 3960 | { |
ade3dc07 | 3961 | if (TYPE_HAS_TRIVIAL_DESTRUCTOR (BINFO_TYPE (base_binfo)) |
809e3e7f | 3962 | || BINFO_VIRTUAL_P (base_binfo)) |
ade3dc07 JM |
3963 | continue; |
3964 | ||
c8094d83 | 3965 | expr = build_special_member_call (current_class_ref, |
4ba126e4 | 3966 | base_dtor_identifier, |
c166b898 | 3967 | NULL, base_binfo, |
5ade1ed2 DG |
3968 | LOOKUP_NORMAL | LOOKUP_NONVIRTUAL, |
3969 | tf_warning_or_error); | |
ade3dc07 JM |
3970 | finish_decl_cleanup (NULL_TREE, expr); |
3971 | } | |
3972 | ||
57ece258 JM |
3973 | /* Don't automatically destroy union members. */ |
3974 | if (TREE_CODE (current_class_type) == UNION_TYPE) | |
3975 | return; | |
3976 | ||
ade3dc07 | 3977 | for (member = TYPE_FIELDS (current_class_type); member; |
910ad8de | 3978 | member = DECL_CHAIN (member)) |
ade3dc07 | 3979 | { |
57ece258 JM |
3980 | tree this_type = TREE_TYPE (member); |
3981 | if (this_type == error_mark_node | |
2e5d2970 VR |
3982 | || TREE_CODE (member) != FIELD_DECL |
3983 | || DECL_ARTIFICIAL (member)) | |
ade3dc07 | 3984 | continue; |
57ece258 JM |
3985 | if (ANON_UNION_TYPE_P (this_type)) |
3986 | continue; | |
3987 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (this_type)) | |
ade3dc07 | 3988 | { |
c8094d83 MS |
3989 | tree this_member = (build_class_member_access_expr |
3990 | (current_class_ref, member, | |
50ad9642 | 3991 | /*access_path=*/NULL_TREE, |
5ade1ed2 DG |
3992 | /*preserve_reference=*/false, |
3993 | tf_warning_or_error)); | |
ade3dc07 JM |
3994 | expr = build_delete (this_type, this_member, |
3995 | sfk_complete_destructor, | |
3996 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, | |
574cfaa4 | 3997 | 0, tf_warning_or_error); |
ade3dc07 JM |
3998 | finish_decl_cleanup (NULL_TREE, expr); |
3999 | } | |
8d08fdba MS |
4000 | } |
4001 | } | |
4002 | ||
8d08fdba MS |
4003 | /* Build a C++ vector delete expression. |
4004 | MAXINDEX is the number of elements to be deleted. | |
4005 | ELT_SIZE is the nominal size of each element in the vector. | |
4006 | BASE is the expression that should yield the store to be deleted. | |
8d08fdba MS |
4007 | This function expands (or synthesizes) these calls itself. |
4008 | AUTO_DELETE_VEC says whether the container (vector) should be deallocated. | |
8d08fdba MS |
4009 | |
4010 | This also calls delete for virtual baseclasses of elements of the vector. | |
4011 | ||
4012 | Update: MAXINDEX is no longer needed. The size can be extracted from the | |
4013 | start of the vector for pointers, and from the type for arrays. We still | |
4014 | use MAXINDEX for arrays because it happens to already have one of the | |
4015 | values we'd have to extract. (We could use MAXINDEX with pointers to | |
4016 | confirm the size, and trap if the numbers differ; not clear that it'd | |
4017 | be worth bothering.) */ | |
e92cc029 | 4018 | |
8d08fdba | 4019 | tree |
362efdc1 | 4020 | build_vec_delete (tree base, tree maxindex, |
574cfaa4 JM |
4021 | special_function_kind auto_delete_vec, |
4022 | int use_global_delete, tsubst_flags_t complain) | |
8d08fdba | 4023 | { |
f30432d7 | 4024 | tree type; |
49b7aacb JM |
4025 | tree rval; |
4026 | tree base_init = NULL_TREE; | |
8d08fdba | 4027 | |
f30432d7 | 4028 | type = TREE_TYPE (base); |
c407792d | 4029 | |
f30432d7 | 4030 | if (TREE_CODE (type) == POINTER_TYPE) |
8d08fdba MS |
4031 | { |
4032 | /* Step back one from start of vector, and read dimension. */ | |
834c6dff | 4033 | tree cookie_addr; |
726a989a | 4034 | tree size_ptr_type = build_pointer_type (sizetype); |
834c6dff | 4035 | |
6742d92b | 4036 | if (TREE_SIDE_EFFECTS (base)) |
49b7aacb JM |
4037 | { |
4038 | base_init = get_target_expr (base); | |
4039 | base = TARGET_EXPR_SLOT (base_init); | |
4040 | } | |
708cae97 | 4041 | type = strip_array_types (TREE_TYPE (type)); |
db3927fb AH |
4042 | cookie_addr = fold_build1_loc (input_location, NEGATE_EXPR, |
4043 | sizetype, TYPE_SIZE_UNIT (sizetype)); | |
5d49b6a7 RG |
4044 | cookie_addr = fold_build_pointer_plus (fold_convert (size_ptr_type, base), |
4045 | cookie_addr); | |
574cfaa4 | 4046 | maxindex = cp_build_indirect_ref (cookie_addr, RO_NULL, complain); |
8d08fdba | 4047 | } |
f30432d7 | 4048 | else if (TREE_CODE (type) == ARRAY_TYPE) |
8d08fdba | 4049 | { |
f4f206f4 KH |
4050 | /* Get the total number of things in the array, maxindex is a |
4051 | bad name. */ | |
f30432d7 | 4052 | maxindex = array_type_nelts_total (type); |
834c6dff | 4053 | type = strip_array_types (type); |
574cfaa4 JM |
4054 | base = cp_build_addr_expr (base, complain); |
4055 | if (base == error_mark_node) | |
4056 | return error_mark_node; | |
6742d92b | 4057 | if (TREE_SIDE_EFFECTS (base)) |
49b7aacb JM |
4058 | { |
4059 | base_init = get_target_expr (base); | |
4060 | base = TARGET_EXPR_SLOT (base_init); | |
4061 | } | |
8d08fdba MS |
4062 | } |
4063 | else | |
4064 | { | |
574cfaa4 | 4065 | if (base != error_mark_node && !(complain & tf_error)) |
8251199e | 4066 | error ("type to vector delete is neither pointer or array type"); |
8d08fdba MS |
4067 | return error_mark_node; |
4068 | } | |
8d08fdba | 4069 | |
49b7aacb | 4070 | rval = build_vec_delete_1 (base, maxindex, type, auto_delete_vec, |
574cfaa4 JM |
4071 | use_global_delete, complain); |
4072 | if (base_init && rval != error_mark_node) | |
f293ce4b | 4073 | rval = build2 (COMPOUND_EXPR, TREE_TYPE (rval), base_init, rval); |
49b7aacb JM |
4074 | |
4075 | return rval; | |
8d08fdba | 4076 | } |