modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/labels-3.c (about)

     1  /* Verify that we can narrow the storage associated with label diffs.  */
     2  /* { dg-require-effective-target indirect_jumps } */
     3  /* { dg-require-effective-target label_values } */
     4  
     5  int foo (int a)
     6  {
     7    static const short ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
     8    void *p = &&l1 + ar[a];
     9    goto *p;
    10   l1:
    11    return 1;
    12   l2:
    13    return 2;
    14  }