llvm-gcc-4.0/gcc/testsuite/gcc.apple/asm-block-26.c

/* APPLE LOCAL file CW asm blocks */
/* { dg-do assemble { target i?86*-*-darwin* } } */
/* { dg-options { -fasm-blocks -msse3 } } */
/* Radar 4300138 */

void foo() {
  char value;
  asm {
    REP stosB
  }
}