D-Programming-Language/dmd — pull request #1418 by 9rnsr (2012-12-28 04:22:09+00:00)
Title: Issue 9230 - Incorrect implicit immutable conversion occurs in pure function

http://d.puremagic.com/issues/show_bug.cgi?id=9230

`hasMutableIndirectionParams()` is based on the old `TypeFunction::purityLevel()` (before fixing issue 8408). So its result is consistent with `TypeFunction::purityLevel() != PUREstrong` in 2.060. Then it *fixes* the regression.