gcc/testsuite/gdc.test/fail_compilation/fail20033.d

   1 // REQUIRED_ARGS: -de
   2 /*
   3 TEST_OUTPUT:
   4 ---
   5 fail_compilation/fail20033.d(38): Deprecation: `alias byKeyValue this` is deprecated - This was a bad idea
   6 fail_compilation/fail20033.d(39): Deprecation: `alias byKeyValue this` is deprecated
   7 fail_compilation/fail20033.d(41): Deprecation: `alias byKeyValue this` is deprecated - This was a bad idea
   8 fail_compilation/fail20033.d(42): Deprecation: `alias byKeyValue this` is deprecated
   9 ---
  10 */
  11 #line 1
  12 struct Tuple(T...)
  13 {
  14     T values;
  15     alias values this;
  16 }
  17
  18 alias KVT = Tuple!(string, string);
  19
  20 struct Test {
  21     struct Range {
  22         bool empty () { return false; }
  23         KVT front() { return KVT.init; }
  24         void popFront() {}
  25     }
  26
  27     auto byKeyValue () { return Range.init; }
  28
  29     deprecated("This was a bad idea")
  30     alias byKeyValue this;
  31 }
  32
  33 struct Test2 {
  34     struct Range {
  35         bool empty () { return false; }
  36         KVT front() { return KVT.init; }
  37         void popFront() {}
  38     }
  39
  40     auto byKeyValue () { return Range.init; }
  41
  42     deprecated alias byKeyValue this;
  43 }
  44
  45 void main ()
  46 {
  47     foreach (k, v; Test.init.byKeyValue) {} // Fine
  48     foreach (k, v; Test2.init.byKeyValue) {} // Fine
  49     foreach (k, v; Test.init) {} // Fails
  50     foreach (k, v; Test2.init) {} // Fails
  51
  52     auto f1 = Test.init.front(); // Fails
  53     auto f2 = Test2.init.front(); // Fails
  54 }