[Bug bootstrap/17099] New: Bootstrap failure on powerpc64-redhat-linux

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

GCC 3.5.0 20040818 fails to bootstrap on powerpc64-redhat-linux
(no matter if starting bootstrap from GCC 3.4.1 or 3.3.4), there are lost of
comparison failures, apparently in .debug_info sections.

So far I have tracked it down to a miscompilation of modified_type_die.
Small testcase which shows the miscompilation is:
extern void exit (int);
extern void abort (void);

void
check (int a)
{
  if (a != 1)
    abort ();
}

void
test (int a, int b)
{
  check ((a ? 1 : 0) | (b ? 2 : 0));
}

int
main (void)
{
  test (1, 0);
  exit (0);
}

At -O2 -m64 this aborts.

-- 
           Summary: Bootstrap failure on powerpc64-redhat-linux
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc64-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17099