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c/3835: ICE in eliminate_regs, at reload1.c:2584 -- gcc version 3.1 20010724 (experimental)
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c/3835: ICE in eliminate_regs, at reload1.c:2584 -- gcc version 3.1 20010724 (experimental)
- From: harinath at cs dot umn dot edu
- Date: 26 Jul 2001 23:47:59 -0000
- Reply-To: harinath at cs dot umn dot edu
>Number: 3835
>Category: c
>Synopsis: ICE in eliminate_regs, at reload1.c:2584 -- gcc version 3.1 20010724 (experimental)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Thu Jul 26 16:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: harinath@cs.umn.edu
>Release: gcc version 3.1 20010724 (experimental)
>Organization:
>Environment:
i686-pc-linux-gnu
>Description:
The following is a heavily distilled testcase for a ICE in eliminate_regs.
The testcase uses an 'asm' statement, but I believe it is machine
independent. The asm body proper is empty, and the only constraints
used are 'r' and 'm'.
--------------------------------------------------
// test.c
extern void foo (void);
int bar ()
{
char code = 0;
for (;;)
{
asm ("" : : "r" (0));
if (code < 0)
foo ();
if (({ char res; asm ("" : "=r" (res) : "r" (0), "m" (code)); res; }))
foo ();
}
}
>How-To-Repeat:
han ~/z/z > gcc -c -O2 -Wall test.c
test.c: In function `bar':
test.c:15: Internal compiler error in eliminate_regs, at reload1.c:2584
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
han ~/z/z > gcc -v
Reading specs from /home/grad04/harinath/linux/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: ../../configure --prefix=/home/grad04/harinath --exec-prefix=/home/grad04/harinath/linux --enable-threads=posix --enable-shared --enable-languages=c,c++,f77,objc,java --enable-java-awt=xlib
Thread model: posix
gcc version 3.1 20010724 (experimental)
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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