gcc/testsuite/gcc.dg/sso-8.c

   1 /* Test support of scalar_storage_order pragma */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-fsso-struct=little-endian" } */
   5 /* { dg-require-effective-target int32plus } */
   6
   7 struct S1
   8 {
   9   int i;
  10 };
  11
  12 #pragma scalar_storage_order big-endian
  13
  14 struct S2
  15 {
  16   int i;
  17 };
  18
  19 #pragma scalar_storage_order default
  20
  21 struct S3
  22 {
  23   int i;
  24 };
  25
  26 struct S1 my_s1 = { 0x12345678 };
  27 struct S2 my_s2 = { 0x12345678 };
  28 struct S3 my_s3 = { 0x12345678 };
  29
  30 unsigned char big_endian_pattern[4] = { 0x12, 0x34, 0x56, 0x78 };
  31 unsigned char little_endian_pattern[4] = { 0x78, 0x56, 0x34, 0x12 };
  32
  33 int main (void)
  34 {
  35   if (__builtin_memcmp (&my_s1, &little_endian_pattern, 4) != 0)
  36     __builtin_abort ();
  37
  38   if (__builtin_memcmp (&my_s2, &big_endian_pattern, 4) != 0)
  39     __builtin_abort ();
  40
  41   if (__builtin_memcmp (&my_s3, &little_endian_pattern, 4) != 0)
  42     __builtin_abort ();
  43
  44   return 0;
  45 }