modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/961017-1.c (about)

     1  main ()
     2  {
     3    unsigned char z = 0;
     4  
     5    do ;
     6    while (--z > 0);
     7    exit (0);
     8  }