modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/940122-1.c (about)

     1  char *a = 0;
     2  char *b = 0;
     3  
     4  g (x)
     5       int x;
     6  {
     7    if ((!!a) != (!!b))
     8      abort ();
     9  }
    10  
    11  f (x)
    12       int x;
    13  {
    14    g (x * x);
    15  }
    16  
    17  main ()
    18  {
    19    f (100);
    20    exit (0);
    21  }