gcc/testsuite/gdc.test/fail_compilation/fail14304.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail14304.d(26): Error: cannot modify read-only constant S14304(1)
   5 fail_compilation/fail14304.d(58):        called from here: sle14304.modify()
   6 fail_compilation/fail14304.d(35): Error: cannot modify read-only constant [1:1, 2:2]
   7 fail_compilation/fail14304.d(61):        called from here: modify14304(aae14304)
   8 fail_compilation/fail14304.d(41): Error: cannot modify read-only constant [1, 2, 3]
   9 fail_compilation/fail14304.d(64):        called from here: modify14304(cast(const(int)[])index14304)
  10 fail_compilation/fail14304.d(47): Error: cannot modify read-only constant [1.414, 1.732, 2.00000]
  11 fail_compilation/fail14304.d(67):        called from here: modify14304(cast(const(double)[])slice14304)
  12 fail_compilation/fail14304.d(53): Error: cannot modify read-only string literal "abc"
  13 fail_compilation/fail14304.d(70):        called from here: modify14304(cast(const(char)[])str14304)
  14 ---
  15 */
  16
  17 struct S14304
  18 {
  19     int x;
  20
  21     int modify() const
  22     {
  23         assert(x == 1);
  24
  25         // This force modification must not affect to ghe s14304 value.
  26         (cast(S14304*)&this).x = 10;
  27
  28         assert(x == 10);
  29         return x;
  30     }
  31 }
  32 int modify14304(immutable int[int] aa)
  33 {
  34     auto p = cast(int*)&aa[1];
  35     *p = 10;
  36     return aa[1];
  37 }
  38 int modify14304(const(int)[] arr)
  39 {
  40     auto a = cast(int[])arr;
  41     a[0] = 10;
  42     return arr[0];
  43 }
  44 int modify14304(const(double)[] arr)
  45 {
  46     auto a = cast(double[])arr;
  47     a[] = 3.14;
  48     return cast(int)arr[0];
  49 }
  50 int modify14304(const(char)[] str)
  51 {
  52     auto s = cast(char[])str;
  53     s[0] = 'z';
  54     return str[0];
  55 }
  56
  57 static immutable sle14304 = immutable S14304(1);
  58 static immutable v14304 = sle14304.modify();
  59
  60 static immutable aae14304 = [1:1, 2:2];
  61 static immutable w14304 = modify14304(aae14304);
  62
  63 static immutable index14304 = [1, 2, 3];
  64 static immutable x14304 = modify14304(index14304);
  65
  66 static immutable slice14304 = [1.414, 1.732, 2];
  67 static immutable y14304 = modify14304(slice14304);
  68
  69 static immutable str14304 = "abc";
  70 static immutable z14304 = modify14304(str14304);