gcc/testsuite/gcc.c-torture/execute/20140212-2.c

   1 /* This used to fail as we would convert f into just return (unsigned int)usVlanID
   2    which is wrong. */
   3
   4 int f(unsigned short usVlanID) __attribute__((noinline,noclone));
   5 int f(unsigned short usVlanID)
   6 {
   7   unsigned int uiVlanID = 0xffffffff;
   8   int i;
   9   if ((unsigned short)0xffff != usVlanID)
  10     uiVlanID = (unsigned int)usVlanID;
  11   return uiVlanID;
  12 }
  13
  14 int main(void)
  15 {
  16   if (f(1) != 1)
  17     __builtin_abort ();
  18   if (f(0xffff) != -1)
  19     __builtin_abort ();
  20   return 0;
  21 }