modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/990604-1.c (about)

     1  int b;
     2  void f ()
     3  {
     4    int i = 0;
     5    if (b == 0)
     6      do {
     7        b = i;
     8        i++;
     9      } while (i < 10);
    10  }
    11  
    12  int main ()
    13  {
    14    f ();
    15    if (b != 9)
    16      abort ();
    17    return 0;
    18  }
    19