[Bug regression/29841] New: ICE: on function pointer call.

["raj dot khem at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

The following example (reduced from openssl) causes GCC 4.2 to ICE when -O2 is
used it works ok with -O1. It does not ICE with GCC 4.1 as well with 3.4.6

gcc -c -O2 xxx.c

xxx.c: In function 'foo':
xxx.c:8: warning: function called through a non-compatible type
xxx.c:8: note: if this code is reached, the program will abort
xxx.c:9: internal compiler error: Segmentation fault


xxx.c
============================
typedef void (*fp)(void);
extern char* bar(void* a1, int a2);
extern char* mar(int n);
char* cptr;
void foo()
{
  cptr = mar(6);
  ((char *(*)(void *,int (*)(void *,unsigned char **),char
**))((fp)bar))(0,0,(void*)(0));
}


-- 
           Summary: ICE: on function pointer call.
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: raj dot khem at gmail dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i586-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29841