gcc/testsuite/gcc.dg/sso-6.c

   1 /* Test support of scalar_storage_order pragma */
   2
   3 /* { dg-do run } */
   4 /* { dg-require-effective-target int32plus } */
   5
   6 #pragma scalar_storage_order /* { dg-warning "missing .big-endian.little-endian.default." } */
   7
   8 #pragma scalar_storage_order big-endian
   9
  10 struct S1
  11 {
  12   int i;
  13 };
  14
  15 struct __attribute__((scalar_storage_order("little-endian"))) S2
  16 {
  17   int i;
  18 };
  19
  20 #pragma scalar_storage_order little-endian
  21
  22 struct S3
  23 {
  24   int i;
  25 };
  26
  27 struct __attribute__((scalar_storage_order("big-endian"))) S4
  28 {
  29   int i;
  30 };
  31
  32 #pragma scalar_storage_order default
  33
  34 struct S5
  35 {
  36   int i;
  37 };
  38
  39 #pragma scalar_storage_order other /* { dg-warning "expected .big-endian.little-endian.default." } */
  40
  41 struct S1 my_s1 = { 0x12345678 };
  42 struct S2 my_s2 = { 0x12345678 };
  43 struct S3 my_s3 = { 0x12345678 };
  44 struct S4 my_s4 = { 0x12345678 };
  45 struct S5 my_s5 = { 0x12345678 };
  46
  47 unsigned char big_endian_pattern[4] = { 0x12, 0x34, 0x56, 0x78 };
  48 unsigned char little_endian_pattern[4] = { 0x78, 0x56, 0x34, 0x12 };
  49
  50 int main (void)
  51 {
  52   if (__builtin_memcmp (&my_s1, &big_endian_pattern, 4) != 0)
  53     __builtin_abort ();
  54
  55   if (__builtin_memcmp (&my_s2, &little_endian_pattern, 4) != 0)
  56     __builtin_abort ();
  57
  58   if (__builtin_memcmp (&my_s3, &little_endian_pattern, 4) != 0)
  59     __builtin_abort ();
  60
  61   if (__builtin_memcmp (&my_s4, &big_endian_pattern, 4) != 0)
  62     __builtin_abort ();
  63
  64 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
  65   if (__builtin_memcmp (&my_s5, &little_endian_pattern, 4) != 0)
  66     __builtin_abort ();
  67 #else
  68   if (__builtin_memcmp (&my_s5, &big_endian_pattern, 4) != 0)
  69     __builtin_abort ();
  70 #endif
  71
  72   return 0;
  73 }