[Bug lto/42392] New: ICE when combining LTO with asm()

[rmh at gcc dot gnu dot org]

I got this error when trying to compile GRUB (latest bzr) on amd64 with -flto:

lto1: internal compiler error: compressed stream: buffer error

The culprit was an acinclude check, which can be reduced to the following test
case:

asm (".globl start; start: nop");
int
main ()
{
}

I'm not sure this can be considered valid C (or at least valid GNU C). I'm
tentatively setting ice-on-invalid-code keyword. If I understand correctly, it
is equivalent to:

void start ()
{
  asm ("nop");
}
int
main ()
{
}

In any case I suppose if the code isn't valid, GCC ought to fail more
gracefully than this, so I report anyway in case you'd like to know :-)


-- 
           Summary: ICE when combining LTO with asm()
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, lto
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rmh at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42392