2 # Test that we accept prefix "66 0f" but not "0f 66".
3 # lock addw $0x1,(%eax) -- good order.
5 # lock addw $0x1,(%eax) -- bad order.
8 VALIDATOR: 5: Bad prefix usage
9 *** <input> IS UNSAFE ***
11 0: 66 f0 83 00 01 add [%eax], 0x1
12 5: f0 66 83 00 01 add [%eax], 0x1
14 5: [0] unrecognized instruction