gas/testsuite/gas/i386/inval-seg.s

   1         .text
   2 # All the following should be illegal
   3         movl    %ds,(%eax)
   4         movl    (%eax),%ds
   5
   6         .intel_syntax noprefix
   7         mov     eax, DWORD PTR fs:foobar:16
   8         mov     eax, DWORD PTR fs:foobar:barfoo:16
   9         mov     eax, DWORD PTR fs:ds:16
  10         mov     eax, DWORD PTR fs:ds:cs:16