modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/c1.c (about)

     1  unsigned
     2  rec (a, b)
     3       unsigned a;
     4       unsigned b;
     5  {
     6    return a * rec (a - 1, b + 1);
     7  }