otto@lonkero:~/code$ gcc bug.c -Wall

bug.c: In function ‘main’:
bug.c:5: error: void value not ignored as it ought to be
bug.c:5: error: void value not ignored as it ought to be
bug.c:5: confused by earlier errors, bailing out
Preprocessed source stored into /tmp/ccoFNCjw.out file, please attach this to
your bugreport.

otto@lonkero:~/code$ cat /tmp/ccoFNCjw.out

// /usr/lib/gcc/i486-linux-gnu/4.4.1/cc1 -quiet bug.c -D_FORTIFY_SOURCE=2
-quiet -dumpbase bug.c -mtune=generic -march=i486 -auxbase bug -Wall
-fstack-protector -o - -frandom-seed=0
# 1 "bug.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "bug.c"
int main(void)
{
   int a=1;

   if((a==1) ? (void) (0) : 1);

   return 0;
}


-- 
           Summary: crash on invalid code if((a==1) ? (void) (0) : 1)
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: soundis at infa dot fi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44982