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optimization/5591: ICE in copy_to_mode_reg, at explow.c:792, calling local bcmp()
- From: nomura at netapp dot com
- To: gcc-gnats at gcc dot gnu dot org
- Date: Mon, 4 Feb 2002 15:48:28 -0800
- Subject: optimization/5591: ICE in copy_to_mode_reg, at explow.c:792, calling local bcmp()
>Number: 5591
>Category: optimization
>Synopsis: ICE in copy_to_mode_reg, at explow.c:792, calling local bcmp()
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Mon Feb 04 15:56:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:
>Release: 3.0.3
>Organization:
Network Appliance
>Environment:
System: Linux noname 2.4.7-10smp #1 SMP Thu Sep 6 17:09:31 EDT 2001 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: /u/nomura/dl/gcc-3.0.3/configure --prefix=/usr/local/build/compilers/gcc-3.0.3 --with-gnu-as --with-as=/usr/local/build/bin/i386-elf-as-2.11 --with-gnu-ld
>Description:
[noname]$ /usr/local/build/compilers/gcc-3.0.3/bin/gcc -O1 bug.i -v
Reading specs from /usr/local/build/compilers/gcc-3.0.3/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/specs
Configured with: /u/nomura/dl/gcc-3.0.3/configure --prefix=/usr/local/build/compilers/gcc-3.0.3 --with-gnu-as --with-as=/usr/local/build/bin/i386-elf-as-2.11 --with-gnu-ld
Thread model: single
gcc version 3.0.3
/usr/local/build/compilers/gcc-3.0.3/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/cc1 -fpreprocessed bug.i -quiet -dumpbase bug.i -O1 -version -o /tmp/ccgmoMM6.s
GNU CPP version 3.0.3 (cpplib) (i386 Linux/ELF)
GNU C version 3.0.3 (i686-pc-linux-gnu)
compiled by GNU C version 2.95.1g 19990816 (change 108897).
bug.i: In function `gccbug':
bug.i:9: Internal compiler error in copy_to_mode_reg, at explow.c:792
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
[noname]$ cat bug.i
int bcmp (const void *, const void *, unsigned int);
;
void
gccbug()
{
char *a, *b;
unsigned long long c;
bcmp(a, b, c);
}
The host system is Redhat Linux 7.2. The bug also exists in
gcc 2.96 as shipped with that system:
[noname]$ /usr/bin/gcc -O1 bug.i -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)
/usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1 bug.i -quiet -dumpbase bug.i -O1 -version -o /tmp/ccfQfdhW.s
GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-98) (i386-redhat-linux) compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-98).
bug.i: In function `gccbug':
bug.i:9: Internal compiler error in copy_to_mode_reg, at explow.c:789
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.
>How-To-Repeat:
Compile with -O1 or -O2:
int bcmp (const void *, const void *, unsigned int);
;
void
gccbug()
{
char *a, *b;
unsigned long long c;
bcmp(a, b, c);
}
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: