modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20021127-1.c (about)

     1  /* { dg-options "-std=c99" } */
     2  
     3  long long a = -1;
     4  long long llabs (long long);
     5  void abort (void);
     6  int
     7  main()
     8  {
     9    if (llabs (a) != 1)
    10      abort ();
    11    return 0;
    12  }
    13  long long llabs (long long b)
    14  {
    15  	abort ();
    16  }