[Bug rtl-optimization/18294] New: ICE in rtl_verify_flow_info during bootstrap

["sje at cup dot hp dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I get an ICE when bootstrapping the latest GCC on ia64-hp-hpux11.20.  It dies
when compiling adjust_field_type in gengtype.c.  Attached is a small test case
to reproduce the problem.  The test case only fails in ILP32 mode (the default),
it cannot be reproduced in LP64 mode (-mlp64) and it cannot be reproduced on
IA64 Linux because that has no ILP32 mode.

Test case:


void
adjust_field_type (int x)
{
  void *params[10];
  int i;
  for (i = 0; i < 10; i++)
    params[i] = ((void *)0);
  for (i = 0; i < 10; i++)
    if (x == 0) {
      if (params[i] != ((void *)0))
        foo (x);
    }
  return;
}

-- 
           Summary: ICE in rtl_verify_flow_info during bootstrap
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sje at cup dot hp dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: ia64-hp-hpux11.20
  GCC host triplet: ia64-hp-hpux11.20
GCC target triplet: ia64-hp-hpux11.20


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18294