gcc/testsuite/g++.dg/cpp0x/range-for15.C

   1 // Test for range-based for loop with templates
   2 // and begin/end as member (non-)virtual functions
   3
   4 // { dg-do run { target c++11 } }
   5
   6 unsigned int g;
   7
   8 struct A
   9 {
  10     virtual int *begin()
  11     {
  12         g |= 1;
  13         return 0;
  14     }
  15     int *end()
  16     {
  17         g |= 2;
  18         return 0;
  19     }
  20 };
  21
  22 struct B : A
  23 {
  24     virtual int *begin()
  25     {
  26         g |= 4;
  27         return 0;
  28     }
  29     int *end()
  30     {
  31         g |= 8;
  32         return 0;
  33     }
  34 };
  35
  36 extern "C" void abort(void);
  37
  38 int main ()
  39 {
  40     A a;
  41     B b;
  42     A &aa = b;
  43
  44     g = 0;
  45     for (int x : a);
  46     if (g != (1 | 2))
  47         abort();
  48
  49     g = 0;
  50     for (int x : b);
  51     if (g != (4 | 8))
  52         abort();
  53
  54     g = 0;
  55     for (int x : aa);
  56     if (g != (4 | 2))
  57         abort();
  58 }