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c/4869: ICE on inline assembler
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c/4869: ICE on inline assembler
- From: pavenis at latnet dot lv
- Date: 13 Nov 2001 17:36:00 -0000
- Reply-to: pavenis at latnet dot lv
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>Number: 4869
>Category: c
>Synopsis: ICE on inline assembler
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-illegal-code
>Submitter-Id: net
>Arrival-Date: Tue Nov 13 09:46:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Andris Pavenis
>Release: gcc-3.1 20011112 (experimental), gcc-3.1 20011030 (experimantal)
>Organization:
>Environment:
i686-pc-linux-gnu: gcc-3.1 20011112
i586-pc-msdosdjgpp: gcc-3.1 20011030
>Description:
gcc-3.1 (specified versions) generates ICE on following
code which violates aliasing rules. The behaviour of code
is undefined, but it should compile.
/* This example causes ICE with gcc-3.1 20011030 */
long long rdtsc (void)
{
long long Result;
__asm__ ( " rdtsc\n"
: "=ax" ( ((unsigned long *) & Result)[0] ),
"=dx" ( ((unsigned long *) & Result)[1] )
);
return Result;
}
I'm getting following output from
./xgcc -B./ -c bad.c
bad1.c: In function `rdtsc':
bad1.c:11: Internal compiler error in fixup_var_refs_1, at function.c:1912
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
Andris
>How-To-Repeat:
gcc -c bad1.c
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: