D-Programming-Language/dmd — pull request #1933 by 9rnsr (2013-04-25 08:45:21+00:00)
Title: Issue 9985 - Postblit isn't called on local struct return

http://d.puremagic.com/issues/show_bug.cgi?id=9985

Until 'ref' deduction finished, auto ref function is not an actual ref function. So compiler should keep NRVO ability.