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
