gcc/testsuite/gdc.test/fail_compilation/fail18719.d

   1 // https://issues.dlang.org/show_bug.cgi?id=18719
   2
   3 /*
   4 TEST_OUTPUT:
   5 ---
   6 fail_compilation/fail18719.d(29): Error: immutable field `x` initialized multiple times
   7        Previous initialization is here.
   8 ---
   9 */
  10
  11 struct S
  12 {
  13     int x = -1;
  14     this(int y) immutable
  15     {
  16         x = y;
  17         import core.stdc.stdio;
  18         printf("Ctor called with %d\n", y);
  19     }
  20     void opAssign(int) immutable;
  21 }
  22
  23 class C
  24 {
  25     S x;
  26     this() immutable
  27     {
  28         this(42); /* Initializes x. */
  29         x = 13; /* Breaking immutable, or ok? */
  30     }
  31     this(int x) immutable
  32     {
  33         this.x = x;
  34     }
  35 }
  36
  37 void main()
  38 {
  39     new immutable C;
  40 }