D-Programming-Language/dmd — pull request #2959 by yazd (2013-12-13 13:56:59+00:00)
Title: [Issue 11735] pragma(msg, ...) fails to print wstring, dstring

I'm unsure if this is a correct fix but it does work for my case.
Is the way the test case is setup correct?

https://d.puremagic.com/issues/show_bug.cgi?id=11735