gcc/testsuite/gdc.test/fail_compilation/b3841.d

   1 // REQUIRED_ARGS: -w -o-
   2
   3 /*
   4 TEST_OUTPUT:
   5 ---
   6 fail_compilation/b3841.d-mixin-32(32): Warning: `char += float` is performing truncating conversion
   7 fail_compilation/b3841.d-mixin-32(32): Warning: `int += float` is performing truncating conversion
   8 fail_compilation/b3841.d-mixin-32(32): Warning: `long += double` is performing truncating conversion
   9 fail_compilation/b3841.d-mixin-32(32): Warning: `char -= float` is performing truncating conversion
  10 fail_compilation/b3841.d-mixin-32(32): Warning: `int -= float` is performing truncating conversion
  11 fail_compilation/b3841.d-mixin-32(32): Warning: `long -= double` is performing truncating conversion
  12 fail_compilation/b3841.d-mixin-32(32): Warning: `char *= float` is performing truncating conversion
  13 fail_compilation/b3841.d-mixin-32(32): Warning: `int *= float` is performing truncating conversion
  14 fail_compilation/b3841.d-mixin-32(32): Warning: `long *= double` is performing truncating conversion
  15 fail_compilation/b3841.d-mixin-32(32): Warning: `char /= float` is performing truncating conversion
  16 fail_compilation/b3841.d-mixin-32(32): Warning: `int /= float` is performing truncating conversion
  17 fail_compilation/b3841.d-mixin-32(32): Warning: `long /= double` is performing truncating conversion
  18 fail_compilation/b3841.d-mixin-32(32): Warning: `char %= float` is performing truncating conversion
  19 fail_compilation/b3841.d-mixin-32(32): Warning: `int %= float` is performing truncating conversion
  20 fail_compilation/b3841.d-mixin-32(32): Warning: `long %= double` is performing truncating conversion
  21 Error: warnings are treated as errors
  22        Use -wi if you wish to treat warnings only as informational.
  23 ---
  24 */
  25
  26
  27 void f(string op, LHS, RHS)()
  28 {
  29     // pragma(msg, LHS, " += ", RHS);
  30     LHS a;
  31     RHS b;
  32     mixin("a "~op~" b;");
  33 }
  34
  35 template Ops(T...)
  36 {
  37     alias Ops = T;
  38 }
  39
  40 void main()
  41 {
  42     foreach (string op; Ops!("+=", "-=", "*=", "/=", "%="))
  43     {
  44         // OK
  45         f!(op, int, int)();
  46         f!(op, long, int)();
  47         f!(op, long, short)();
  48         f!(op, float, long)();
  49         f!(op, double, float)();
  50
  51         // Should that really be OK ?
  52         f!(op, short, int)();
  53         f!(op, float, double)();
  54
  55         // Not OK, truncating conversion.
  56         f!(op, char, float)();
  57         f!(op, int, float)();
  58         f!(op, long, double)();
  59     }
  60
  61     // OK
  62     f!("^^=", int, int)();
  63     f!("^^=", long, int)();
  64     f!("^^=", long, short)();
  65     f!("^^=", float, long)();
  66     f!("^^=", double, float)();
  67     // Should that really be OK ?
  68     f!("^^=", float, double)();
  69 }