gcc/testsuite/gdc.test/fail_compilation/fail13574.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail13574.d(21): Error: cannot modify operator `$`
   5 fail_compilation/fail13574.d(27): Error: cannot modify operator `$`
   6 ---
   7 */
   8
   9 struct Foo
  10 {
  11     void opSlice(size_t a, size_t b) {  }
  12     alias opDollar = length;
  13     size_t length;
  14 }
  15
  16 void main()
  17 {
  18     Foo foo;
  19     foo[0 .. foo.length = 1];
  20     assert(foo.length == 1);
  21     foo[0 .. $ = 2]; // assigns to the temporary dollar variable
  22     //assert(foo.length == 2);
  23
  24     int[] arr = [1,2,3];
  25     auto x = arr[0 .. arr.length = 1];
  26     assert(arr.length == 1);
  27     auto y = arr[0 .. $ = 2]; // should also be disallowed
  28     //assert(arr.length == 2);
  29 }