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

     1  #ifndef NO_LABEL_VALUES
     2  f ()
     3  {
     4    void *x = &&L2;
     5    if (&&L3 - &&L1 > 1)
     6      abort();
     7   L1: return 1;
     8   L2: abort ();
     9   L3:;
    10  }
    11  #else
    12  int x;
    13  #endif