modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20040409-1w.c (about)

     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  }