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[PATCH] Fix PR46866
- From: Richard Guenther <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 9 Dec 2010 17:57:53 +0100 (CET)
- Subject: [PATCH] Fix PR46866
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
Richard.
2010-12-09 Richard Guenther <rguenther@suse.de>
PR middle-end/46844
* gimple-fold.c (canonicalize_constructor_val): Canonicalize
addresses.
* gcc.c-torture/compile/pr46866.c: New testcase.
Index: gcc/gimple-fold.c
===================================================================
*** gcc/gimple-fold.c (revision 167630)
--- gcc/gimple-fold.c (working copy)
*************** canonicalize_constructor_val (tree cval)
*** 132,137 ****
--- 132,141 ----
return NULL_TREE;
if (base && TREE_CODE (base) == VAR_DECL)
add_referenced_var (base);
+ /* We never have the chance to fixup types in global initializers
+ during gimplification. Do so here. */
+ if (TREE_TYPE (TREE_TYPE (cval)) != TREE_TYPE (TREE_OPERAND (cval, 0)))
+ cval = build_fold_addr_expr (TREE_OPERAND (cval, 0));
}
return cval;
}
Index: gcc/testsuite/gcc.c-torture/compile/pr46866.c
===================================================================
*** gcc/testsuite/gcc.c-torture/compile/pr46866.c (revision 0)
--- gcc/testsuite/gcc.c-torture/compile/pr46866.c (revision 0)
***************
*** 0 ****
--- 1,19 ----
+ extern void *malloc(__SIZE_TYPE__);
+ typedef struct T T;
+ struct T {
+ void (*destroy)(void *);
+ };
+ void destroy(union { void *this; } __attribute__((transparent_union)));
+ static const typeof(destroy) *_destroy = (const typeof(destroy)*)destroy;
+ void destroy(void *this);
+ static T *create_empty(void)
+ {
+ T *this = malloc(sizeof(*this));
+ *this = (typeof(*this)){ _destroy };
+ return this;
+ }
+ void openssl_crl_load(void)
+ {
+ T *this = create_empty();
+ destroy(this);
+ }