modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/20011010-1.c (about)

     1  extern int used (void);
     2  
     3  
     4  int foo () 
     5  {
     6    int i;
     7    for (; used (); ({while (1) if (used ()) return 0;}))
     8      i++;
     9    return i;
    10  }