20011205-1.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 11 行

/* Failure to mark_addressable all operands before evaluation means we
   don't set up the proper temporaries, which leaves us with an asm that
   doesn't match its contraints.  */

long foo()
{
  long x;
  asm("" : "=r"(x) : "m"(x));
  return x;
}