D-Programming-Language/dmd — pull request #1918 by 9rnsr (2013-04-21 14:39:06+00:00)
Title: Issue 9974 - immutable class constructor is broken

http://d.puremagic.com/issues/show_bug.cgi?id=9974

Now qualified constructor would work properly, so constructors should inherit aggregate qualifiers as like as normal member functions.