modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/920721-4.c (about)

     1  #ifndef NO_LABEL_VALUES
     2  int try (int num) {
     3    __label__ lab1, lab2, lab3, lab4, lab5, lab6, default_lab;
     4  
     5    void *do_switch (int num) {
     6      switch(num) {
     7      case 1:
     8        return &&lab1;
     9      case 2:
    10        return &&lab2;
    11      case 3:
    12        return &&lab3;
    13      case 4:
    14        return &&lab4;
    15      case 5:
    16        return &&lab5;
    17      case 6:
    18        return &&lab6;
    19      default:
    20        return &&default_lab;
    21      }
    22    }
    23  
    24    goto *do_switch (num);
    25  
    26   lab1:
    27    return 1;
    28  
    29   lab2:
    30    return 2;
    31  
    32   lab3:
    33    return 3;
    34  
    35   lab4:
    36    return 4;
    37  
    38   lab5:
    39    return 5;
    40  
    41   lab6:
    42    return 6;
    43  
    44   default_lab:
    45    return -1;
    46  }
    47  
    48  main()
    49  {
    50    int i;
    51    for (i = 1; i <= 6; i++)
    52      {
    53        if (try (i) != i)
    54  	abort();
    55      }
    56    exit(0);
    57  }
    58  #else
    59  main(){ exit (0); }
    60  #endif