gcc/testsuite/gcc.target/i386/pr57018.c

   1 /* { dg-do run } */
   2 /* { dg-options "-Os -fomit-frame-pointer -fno-asynchronous-unwind-tables" } */
   3 /* { dg-additional-options "-march=i686" { target ia32 } } */
   4
   5 struct A { char a[16]; } a;
   6
   7 void __attribute__((noinline, noclone))
   8 foo (struct A b)
   9 {
  10   if (__builtin_memcmp (b.a, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16))
  11     __builtin_abort ();
  12   asm volatile ("" : : : "memory");
  13 }
  14
  15 void __attribute__((noinline, noclone))
  16 bar (struct A b)
  17 {
  18   foo (a);
  19   a = b;
  20 }
  21
  22 int
  23 main ()
  24 {
  25   struct A b = { "\0\1\2\3\4\5\6\7\10\11\12\13\14\15\16\17" };
  26   bar (b);
  27   if (__builtin_memcmp (a.a, b.a, 16))
  28     __builtin_abort ();
  29   return 0;
  30 }
  31