gcc/testsuite/gcc.c-torture/execute/20040409-1w.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
  31 void test(int a, int b)
  32 {
  33   if (test2(a) != b)
  34     abort();
  35   if (test3(a) != b)
  36     abort();
  37   if (test5(a) != b)
  38     abort();
  39   if (test6(a) != b)
  40     abort();
  41 }
  42
  43
  44 int main()
  45 {
  46 #if INT_MAX == 2147483647
  47   test(0x00000000,0x80000000);
  48   test(0x80000000,0x00000000);
  49   test(0x12345678,0x92345678);
  50   test(0x92345678,0x12345678);
  51   test(0x7fffffff,0xffffffff);
  52   test(0xffffffff,0x7fffffff);
  53 #endif
  54
  55 #if INT_MAX == 32767
  56   test(0x0000,0x8000);
  57   test(0x8000,0x0000);
  58   test(0x1234,0x9234);
  59   test(0x9234,0x1234);
  60   test(0x7fff,0xffff);
  61   test(0xffff,0x7fff);
  62 #endif
  63
  64   return 0;
  65 }