modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/930210-1.c (about)

     1  f()
     2  {
     3    char  c1, c2;
     4    char *p1, *p2;
     5  
     6    do {
     7      c1 = c2 = *p1++;
     8      while (c1--)
     9        *p2++ = *p1++;
    10    } while (c2);
    11  }