gcc/testsuite/gdc.test/fail_compilation/fail13701.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail13701.d(16): Error: cannot modify `immutable` expression `this.aa[10]`
   5 fail_compilation/fail13701.d(23): Error: cannot modify `immutable` expression `aa[10]`
   6 fail_compilation/fail13701.d(24): Error: cannot modify `immutable` expression `aa[10]`
   7 ---
   8 */
   9
  10 struct S
  11 {
  12     immutable(int)[int] aa;
  13     this(int n)
  14     {
  15         aa[10] = 20;    // initializing
  16         aa[10] = 30;    // assignment
  17     }
  18 }
  19
  20 void main()
  21 {
  22     immutable(int)[int] aa;
  23     aa[10] = 20;
  24     aa[10]++;
  25 }