Bug 12019 – Better error message for refused ref function argument

This is wrong code: void foo(ref int[1] b) {} void main() { ubyte[4] a; foo(cast(int[1])a); } dmd 2.065beta gives correctly an error message: test.d(4): Error: function test.foo (ref int[1] b) is not callable using argument types (int[1]) But I'd like the error message to explain why it can't compile, that it can't be accepted by reference. Something like: test.d(4): Error: function test.foo (ref int[1] b) is not callable using argument types cast(int[1]) because it is not an lvalue

*** This issue has been marked as a duplicate of issue 11529 ***