File: 20020619-1.c

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gcc-arm-none-eabi 15%3A12.2.rel1-1
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#if (__SIZEOF_INT__ == 4)
typedef int int32;
#elif (__SIZEOF_LONG__ == 4)
typedef long int32;
#else
#error Add target support for int32
#endif
static int32 ref(void)
{
  union {
    char c[5];
    int32 i;
  } u;

  __builtin_memset (&u, 0, sizeof(u));
  u.c[0] = 1;
  u.c[1] = 2;
  u.c[2] = 3;
  u.c[3] = 4;

  return u.i;
}

int main()
{
  int32 b = ref();
  if (b != 0x01020304
      && b != 0x04030201)
    abort ();
  return 0;
}