gcc/testsuite/gcc.dg/sso-13.c

   1 /* Test support of scalar_storage_order attribute */
   2
   3 /* { dg-do compile } */
   4
   5 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   6 #define REV_ENDIANNESS __attribute__((scalar_storage_order("big-endian")))
   7 #else
   8 #define REV_ENDIANNESS __attribute__((scalar_storage_order("little-endian")))
   9 #endif
  10
  11 typedef struct tIp6Addr
  12 {
  13     unsigned int s6_addr32[4];
  14 } tIp6Addr;
  15
  16 struct _tBeTimNetAddr
  17 {
  18     unsigned char isIPv4;
  19     union
  20     {
  21         unsigned int addr;
  22         tIp6Addr addr6;   /* { dg-warning "type punning toggles" } */
  23     } REV_ENDIANNESS u;
  24 } REV_ENDIANNESS;