[Bug middle-end/20623] ICE: fold check: original tree changed by fold with --enable-checking=fold

["rsa at us dot ibm dot com" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #11 from rsa at us dot ibm dot com  2006-06-02 20:11 -------
I recently ran into this on ppc/ppc64 when building a toolchain with gcc4.1 or
gcc4.2.

When the bootstrap gcc was built with --enable-checking=all (or =fold which we
just tested) the glibc 32bit build stage fails in vfprintf.  Peter Bergner
extracted the minimal failure bit out here:

vfprintf.c
int main (void)
{
  static void *array[] = { &&foo - &&bar };
  return 0;
foo:
  return 1;
bar:
  return 2;
} 
Compiler /home/user/gcc/gcc-4_1-20060601-2-biarch/bin/gcc compiled with
--enable-checking=all (=fold)

user@host:~/gcc/bugs/vfprintf> /home/user/gcc/gcc-4_1-20060601-2-biarch/bin/gcc
-c vfprintf.c
vfprintf.c: In function main:
vfprintf.c:3: internal compiler error: fold check: original tree changed by
fold
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 

rsa at us dot ibm dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rsa at us dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20623