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optimization/7460: gcc/g++ 3.1.1 20020714/20020718 (cygwin) segfault on __builtin_ia32_femms()
- From: gcc at tbp dot dyndns dot org
- To: gcc-gnats at gcc dot gnu dot org
- Cc: gcc at tbp dot dyndns dot org
- Date: 31 Jul 2002 22:21:20 -0000
- Subject: optimization/7460: gcc/g++ 3.1.1 20020714/20020718 (cygwin) segfault on __builtin_ia32_femms()
- Reply-to: gcc at tbp dot dyndns dot org
>Number: 7460
>Category: optimization
>Synopsis: gcc/g++ 3.1.1 20020714/20020718 (cygwin) segfault on __builtin_ia32_femms()
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Wed Jul 31 15:26:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: tbp
>Release: gcc version 3.1.1 20020718 (prerelease)
>Organization:
>Environment:
w2k/cygwin on an athlon.
Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.1.1/specs
Configured with: /netrel/src/gcc-3.1.1-4/configure --enable-languages=c,c++,f77,java --enable-libgcj --enable-threads=po
six --with-system-zlib --enable-nls --without-included-gettext --enable-interpreter --disable-sjlj-exceptions --disable-
version-specific-runtime-libs --enable-shared --build=i686-pc-linux --host=i686-pc-cygwin --target=i686-pc-cygwin --enab
le-haifa --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --includedir=/nonexistent/include --libexe
cdir=/usr/sbin
Thread model: posix
gcc version 3.1.1 20020718 (prerelease)
>Description:
--> gcc -O2 -march=athlon bug.c -o bug.exe
bug.c: In function `main':
bug.c:5: internal error: Segmentation fault
Please submit a full bug report,
>How-To-Repeat:
conjunction of __builtin_ia32_femms() and -Ox (x>1) when compiling for -march=athlon triggers an internal error.
test case:
int main(int argc, char *argv[]) {
__builtin_ia32_femms();
exit(0);
}
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: