c/5597: [regression from 2.95.3] Initialization of flexible char array member segfaults

[Matthias Klose]

>Number:         5597
>Category:       c
>Synopsis:       [regression from 2.95.3] Initialization of flexible char array member segfaults
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          ice-on-illegal-code
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 05 15:36:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
>Release:        3.0.4 CVS and HEAD CVS 20020203
>Organization:
The Debian project
>Environment:
System: Debian GNU/Linux (testing/unstable)
Architecture: i686, alpha
host: i386-linux
build: i386-linux
target: i386-linux
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:
[ Reported to the Debian BTS as report #131399.
  Please CC 131399-quiet@bugs.debian.org on replies.
  Log of report can be found at http://bugs.debian.org/131399 ]

Segfaults with 3.0.4 CVS and HEAD CVS 20020203, 2.95.x prints:

$ gcc-2.95 -c bug-131399.c 
bug-131399.c:3: field `data' has incomplete type
bug-131399.c: In function `foo':
bug-131399.c:6: invalid initializer
bug-131399.c:6: (near initialization for `s1.data')


struct descr {
    int len;
    char data[];
};
int foo() {
    struct descr s1 = { 3, "FOO" };
}
falk@borkum:~% /usr/bin/gcc-3.0 bug.c
bug.c: In function `foo':
bug.c:6: 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.

>How-To-Repeat:
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: