D-Programming-Language/dmd — pull request #1066 by 9rnsr (2012-07-28 09:00:20+00:00)
Title: Issue 8453 - Associative array keys refused as property by sort

http://d.puremagic.com/issues/show_bug.cgi?id=8453

This is a regression of refactoring around UFCS mechanism.
Introduced commit: e9538dc00db8789ab1f686f0a0a2bed7316ee794