gcc/testsuite/gdc.test/fail_compilation/fail3672.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail3672.d(28): Error: read-modify-write operations are not allowed for `shared` variables
   5 fail_compilation/fail3672.d(28):        Use `core.atomic.atomicOp!"+="(*p, 1)` instead
   6 fail_compilation/fail3672.d(32): Error: none of the `opOpAssign` overloads of `SF` are callable for `*sfp` of type `shared(SF)`
   7 ---
   8 */
   9
  10 struct SF  // should fail
  11 {
  12     void opOpAssign(string op, T)(T rhs)
  13     {
  14     }
  15 }
  16
  17 struct SK  // ok
  18 {
  19     void opOpAssign(string op, T)(T rhs) shared
  20     {
  21     }
  22 }
  23
  24 void main()
  25 {
  26     shared int x;
  27     auto p = &x;
  28     *p += 1;  // fail
  29
  30     shared SF sf;
  31     auto sfp = &sf;
  32     *sfp += 1;  // fail
  33
  34     shared SK sk;
  35     auto skp = &sk;
  36     sk += 1;  // ok
  37     *skp += 1;  // ok
  38 }