gcc/testsuite/gcc.c-torture/execute/20040409-3w.c

   1 /* { dg-additional-options "-fwrapv" } */
   2
   3 #include <limits.h>
   4
   5 extern void abort ();
   6
   7 int test2(int x)
   8 {
   9   return ~(x + INT_MIN);
  10 }
  11
  12 int test3(int x)
  13 {
  14   return ~(x - INT_MIN);
  15 }
  16
  17 int test5(int x)
  18 {
  19   int y = INT_MIN;
  20   return ~(x + y);
  21 }
  22
  23 int test6(int x)
  24 {
  25   int y = INT_MIN;
  26   return ~(x - y);
  27 }
  28
  29
  30 void test(int a, int b)
  31 {
  32   if (test2(a) != b)
  33     abort();
  34   if (test3(a) != b)
  35     abort();
  36   if (test5(a) != b)
  37     abort();
  38   if (test6(a) != b)
  39     abort();
  40 }
  41
  42
  43 int main()
  44 {
  45 #if INT_MAX == 2147483647
  46   test(0x00000000,0x7fffffff);
  47   test(0x80000000,0xffffffff);
  48   test(0x12345678,0x6dcba987);
  49   test(0x92345678,0xedcba987);
  50   test(0x7fffffff,0x00000000);
  51   test(0xffffffff,0x80000000);
  52 #endif
  53
  54 #if INT_MAX == 32767
  55   test(0x0000,0x7fff);
  56   test(0x8000,0xffff);
  57   test(0x1234,0x6dcb);
  58   test(0x9234,0xedcb);
  59   test(0x7fff,0x0000);
  60   test(0xffff,0x8000);
  61 #endif
  62
  63   return 0;
  64 }
  65