gcc/testsuite/gcc.dg/pr116034.c

   1 /* PR tree-optimization/116034 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O1 -fno-strict-aliasing" } */
   4
   5 unsigned short int g;
   6
   7 static inline int
   8 foo (_Complex unsigned short c)
   9 {
  10   if (__SIZEOF_SHORT__ == 2)
  11     __builtin_memmove (&g, 1 + (char *) &c, 2);
  12   return g;
  13 }
  14
  15 int
  16 main ()
  17 {
  18   if (__SIZEOF_SHORT__ == 2
  19       && __CHAR_BIT__ == 8
  20       && (foo (__BYTE_ORDER__ != __ORDER_BIG_ENDIAN__ ? 0x100 : 1)
  21           != (__BYTE_ORDER__ != __ORDER_BIG_ENDIAN__ ? 1 : 0x100)))
  22     __builtin_abort ();
  23 }