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re PR bootstrap/40753 (ICE in refs_may_alias_p_1 for libffi/src/powerpc/ffi.c) 

2009-07-15  Richard Guenther  <rguenther@suse.de>

	PR middle-end/40753
	* alias.c (ao_ref_from_mem): Reject FUNCTION_DECL and LABEL_DECL
	bases.

	* gcc.c-torture/compile/pr40753.c: New testcase.

From-SVN: r149664
This commit is contained in:
Richard Guenther 2009-07-15 09:25:34 +00:00 committed by Richard Biener
parent 31d29c4061
commit c9b2f286db
4 changed files with 36 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-07-15 Richard Guenther <rguenther@suse.de>
PR middle-end/40753
* alias.c (ao_ref_from_mem): Reject FUNCTION_DECL and LABEL_DECL
bases.
2009-07-15 Maxim Kuvyrkov <maxim@codesourcery.com>
* config/m68k/linux-unwind.h (m68k_fallback_frame_state): Update to

5
gcc/alias.c
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@ -279,6 +279,11 @@ ao_ref_from_mem (ao_ref *ref, const_rtx mem)
&& TREE_CODE (TREE_OPERAND (base, 0)) != SSA_NAME)
return false;
/* The tree oracle doesn't like to have these. */
if (TREE_CODE (base) == FUNCTION_DECL
|| TREE_CODE (base) == LABEL_DECL)
return false;
/* If this is a reference based on a partitioned decl replace the
base with an INDIRECT_REF of the pointer representative we
created during stack slot partitioning. */

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2009-07-15 Richard Guenther <rguenther@suse.de>
PR middle-end/40753
* gcc.c-torture/compile/pr40753.c: New testcase.
2009-07-15 Janus Weil <janus@gcc.gnu.org>
PR fortran/40743

20
gcc/testsuite/gcc.c-torture/compile/pr40753.c Normal file
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@ -0,0 +1,20 @@
typedef struct {
unsigned nargs;
} ffi_cif;
typedef struct {
char tramp[24];
ffi_cif *cif;
} ffi_closure;
extern void *memcpy (void *, const void *, __SIZE_TYPE__);
extern void ffi_closure_LINUX64 (void);
int
ffi_prep_closure_loc (ffi_closure *closure, ffi_cif *cif)
{
void **tramp = (void **) &closure->tramp[0];
memcpy (tramp, (char *) ffi_closure_LINUX64, 16);
closure->cif = cif;
return 0;
}