D-Programming-Language/dmd — pull request #1734 by 9rnsr (2013-03-10 14:56:46+00:00)
Title: [REG2.063a] Issue 9672 - mixin within cyclic import causes undefined properties

http://d.puremagic.com/issues/show_bug.cgi?id=9672

It was caused by fixing issue 7511.