gcc/testsuite/gcc.c-torture/unsorted/bad.c

   1 typedef union longlong
   2 {
   3   struct {unsigned short h0, h1, h2, h3;} h;
   4   struct {signed long low, high;} si;
   5   struct {unsigned long low, high;} ui;
   6   signed long long sll;
   7   unsigned long long ull;
   8 } long_long;
   9
  10
  11 long long
  12 __negdi2 (u)
  13      long long u;
  14 {
  15   long_long uu;
  16
  17   uu.sll = u;
  18
  19   uu.si.low = -uu.si.low;
  20   if (uu.si.low == 0)
  21     uu.si.high = -uu.si.high;
  22   else
  23     uu.si.high = ~uu.si.high;
  24
  25   return uu.sll;
  26 }