--- Comment #1 from hjl at lucon dot org 2007-09-13 21:52 ---
Revision 116656:
http://gcc.gnu.org/ml/gcc-patches/2006-09/msg00026.html
causes this regression.
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hjl at lucon dot org changed:
What|Removed |Added
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--- Comment #2 from hjl at lucon dot org 2007-09-15 03:43 ---
It also fails on Linux/ia32 and Linux/x86-64.
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hjl at lucon dot org changed:
What|Removed |Added
GCC targe
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
CC||pinskia at gcc dot gnu dot
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--- Comment #3 from hjl at lucon dot org 2007-09-15 14:23 ---
It is a simpler testcase:
---
static struct {
char buf[15];
} u2;
void
test6 (void)
{
int len;
char *p;
for (len = 0; len < 2; len++)
{
p = __builtin___memset_chk (u2.buf, '\0', len, 15);
if (p != u2
--- Comment #4 from hjl at lucon dot org 2007-09-15 14:58 ---
This one works:
---
static
char buf[15];
void
test6 (void)
{
int len;
char *p;
for (len = 0; len < 15; len++)
{
p = __builtin___memset_chk (&buf[0], '\0', len, 15);
if (p != &buf[0]) return;
}
}
--- Comment #5 from hjl at lucon dot org 2007-09-15 15:00 ---
We can fold
__builtin___memset_chk (buf, 0, 1, 15);
into
__builtin_memset (&buf, 0, 1);
But we failed to fold
__builtin___memset_chk (&u2.buf[0], 0, 1, 15);
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33423
--- Comment #6 from hjl at lucon dot org 2007-09-15 18:50 ---
Another simple testcase:
---
static char buf;
void
test6 (void)
{
int len;
void *p;
for (len = 0; len < 2; len++)
{
p = __builtin___memset_chk (&buf, '\0', len, 1);
if (p != &buf) return;
}
}
---
f
--- Comment #7 from hjl at lucon dot org 2007-09-15 19:24 ---
This patch works for the testcase.
--- gcc/expr.c.chk 2007-09-07 07:53:42.0 -0700
+++ gcc/expr.c 2007-09-15 12:21:57.0 -0700
@@ -9117,7 +9117,6 @@ expand_expr_real_1 (tree exp, rtx target
case BIND_
--- Comment #8 from pinskia at gcc dot gnu dot org 2007-09-15 19:30 ---
Subject: Re: [4.2/4.3 regression]: internal compiler error: in
expand_expr_real_1, at expr.c:8670
On 15 Sep 2007 19:24:28 -, hjl at lucon dot org
<[EMAIL PROTECTED]> wrote:
>
>
> --- Comment #7 from hjl at
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jakub at gcc dot gnu dot org changed:
What|Removed |Added
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org
--- Comment #9 from jakub at gcc dot gnu dot org 2007-09-17 22:05 ---
Subject: Bug 33423
Author: jakub
Date: Mon Sep 17 22:05:40 2007
New Revision: 128554
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128554
Log:
PR middle-end/33423
* builtins.c (expand_builtin_
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