[Bug middle-end/30848] New: [4.1/4.2/4.3 regression] ICE with invalid constraint in asm statement

[reichelt at gcc dot gnu dot org]

The following invalid code snippet triggers an ICE since GCC 3.0
(with the exception of GCC 3.4.4 - 3.4.6):

=====================================
void foo(double d)
{
  __asm__ ("" : "=u" (d));
}
=====================================

bug.c: In function 'foo':
bug.c:3: error: output regs must be grouped at top of stack
bug.c:4: internal compiler error: in emit_swap_insn, at reg-stack.c:818
Please submit a full bug report, [etc.]


-- 
           Summary: [4.1/4.2/4.3 regression] ICE with invalid constraint in
                    asm statement
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30848