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re PR middle-end/28683 (ICE (segfault in add_reg_br_prob_note) when comparing pointers with -O (and higher))

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PR middle-end/28683
	* cfgexpand.c (add_reg_br_prob_note): Check if last has exactly
	3 following insns.

	* gcc.c-torture/compile/20060823-1.c: New test.

From-SVN: r116467
This commit is contained in:
Jakub Jelinek 2006-08-26 09:31:30 +02:00 • committed by Jakub Jelinek
parent 7acf7efa89
commit fa1ff4eb8c
4 changed files with 31 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-08-26 Jakub Jelinek <jakub@redhat.com>
PR middle-end/28683
* cfgexpand.c (add_reg_br_prob_note): Check if last has exactly
3 following insns.
2006-08-25 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
* flow.c (verify_wide_reg): Use internal_error for consistency failure.

2
gcc/cfgexpand.c
View file

@ -58,7 +58,9 @@ add_reg_br_prob_note (rtx last, int probability)
if (!any_condjump_p (last)
|| !JUMP_P (NEXT_INSN (last))
|| !simplejump_p (NEXT_INSN (last))
|| !NEXT_INSN (NEXT_INSN (last))
|| !BARRIER_P (NEXT_INSN (NEXT_INSN (last)))
|| !NEXT_INSN (NEXT_INSN (NEXT_INSN (last)))
|| !LABEL_P (NEXT_INSN (NEXT_INSN (NEXT_INSN (last))))
|| NEXT_INSN (NEXT_INSN (NEXT_INSN (NEXT_INSN (last)))))
goto failed;

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2006-08-26 Jakub Jelinek <jakub@redhat.com>
PR middle-end/28683
* gcc.c-torture/compile/20060823-1.c: New test.
2006-08-25 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
PR c++/28853

18
gcc/testsuite/gcc.c-torture/compile/20060823-1.c Normal file
View file

@ -0,0 +1,18 @@
/* PR middle-end/28683 */
extern void foo (int *);
struct A
{
int f;
};
struct A *
test (struct A *r)
{
int *f = &r->f;
static int i = 0;
if (!i && !((void *) f == (void *) r))
foo (&i);
return r;
}