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c/5041: Zero-length arrays initialized by {}; cause gcc-3.0 to segfault
- From: mwg at fluffy dot isd dot dp dot ua
- To: gcc-gnats at gcc dot gnu dot org, debian-gcc at lists dot debian dot org
- Date: Fri, 07 Dec 2001 15:49:58 +0200
- Subject: c/5041: Zero-length arrays initialized by {}; cause gcc-3.0 to segfault
>Number: 5041
>Category: c
>Synopsis: Zero-length arrays initialized by {}; cause gcc-3.0 to segfault
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Fri Dec 07 05:56:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Wladimir Mutel
>Release: 3.0.2 (Debian) (Debian testing/unstable)
>Organization:
Information System Development
>Environment:
System: Linux fluffy.isd.dp.ua 2.4.16 #2 Tue Dec 4 11:17:53 EET 2001 i686 unknown
Architecture: i686
host: i386-pc-linux-gnu
build: i386-pc-linux-gnu
target: i386-pc-linux-gnu
configured with: ../src/configure -v --enable-languages=c,c++,java,f77,proto,objc --prefix=/usr --infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as --with-gnu-ld --with-system-zlib --enable-long-long --enable-nls --without-included-gettext --disable-checking --enable-threads=posix --enable-java-gc=boehm --with-cpp-install-dir=bin --enable-objc-gc i386-linux
>Description:
I tried to build AT&T Cyclone 0.2 with gcc-3.0, and it trapped. Here is a sample to demonstrate an idea:
int main ()
{
int t[0] = {};
int *p=t;
}
Running gcc-3.0 sample.c
gives this:
sample.c: In function `main':
sample.c:4: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
gcc-2.95 and g++-3.0 compile the code withour problems.
>How-To-Repeat:
Just put these 5 lines of code in the file and compile it with gcc-3.0
No preprocessor involved.
>Fix:
AT&T Cyclone was succesfully compiled with gcc-2.95
>Release-Note:
>Audit-Trail:
>Unformatted: