gcc/testsuite/gdc.test/fail_compilation/fail351.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail351.d(14): Error: expression `this.num[index]` of type `immutable(uint)` is not implicitly convertible to return type `ref uint`
   5 ---
   6 */
   7
   8 // https://issues.dlang.org/show_bug.cgi?id=2780
   9
  10 struct Immutable {
  11     immutable uint[2] num;
  12
  13     ref uint opIndex(size_t index) immutable return {
  14         return num[index];
  15     }
  16 }
  17
  18 void main() {
  19     immutable Immutable foo;
  20     //foo[0]++;
  21 }