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c++: temporarily restore VEC_INIT_EXPR gimplify [PR103936]

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PR103936 demonstrates that some VEC_INIT_EXPR can still survive into
GENERIC; until that's fixed let's put back the handling in cp_gimplify_expr.

	PR c++/103936
	PR c++/65591

gcc/cp/ChangeLog:

	* cp-gimplify.c (cp_gimplify_expr): Restore VEC_INIT_EXPR handling.

gcc/testsuite/ChangeLog:

	* g++.dg/init/aggr15.C: New test.
This commit is contained in:
Jason Merrill 2022-01-06 21:58:01 -05:00
parent 041cfa0ce4
commit 765693be1c
2 changed files with 24 additions and 0 deletions
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13
gcc/cp/cp-gimplify.c
View File

@ -469,6 +469,19 @@ cp_gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
ret = GS_OK;
break;
case VEC_INIT_EXPR:
{
*expr_p = expand_vec_init_expr (NULL_TREE, *expr_p,
tf_warning_or_error);
hash_set<tree> pset;
cp_walk_tree (expr_p, cp_fold_r, &pset, NULL);
cp_genericize_tree (expr_p, false);
copy_if_shared (expr_p);
ret = GS_OK;
}
break;
case THROW_EXPR:
/* FIXME communicate throw type to back end, probably by moving
THROW_EXPR into ../tree.def. */

11
gcc/testsuite/g++.dg/init/aggr15.C Normal file
View File

@ -0,0 +1,11 @@
// PR c++/65591
struct ss {
ss() {};
};
struct C {
ss s[1000];
};
int main() {
C cs[5] = {};
}