D-Programming-Language/dmd — pull request #1671 by mxfm (2013-02-17 17:19:09+00:00)
Title: Issue 9526 - ICE when compiling project with unittests

http://d.puremagic.com/issues/show_bug.cgi?id=9526

When markAsNeedingClosure() moves through sx = sx->parent list, it should check for null.