D-Programming-Language/dmd — pull request #3979 by 9rnsr (2014-09-12 17:08:29+00:00)
Title: Issue 13336 - auto ref return deduced to be ref despite return value coercion

https://issues.dlang.org/show_bug.cgi?id=13336

Deduce `auto ref` from all return statements, as same as return type inference.