modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/921007-1.c (about)

     1  static int strcmp(){return-1;}
     2  #define strcmp __builtin_strcmp
     3  main()
     4  {
     5  if(strcmp("X","X\376")>=0)abort();
     6  exit(0);
     7  }