https://issues.dlang.org/show_bug.cgi?id=20684
--- Comment #1 from Vladimir Panteleev <[email protected]> --- Compilation succeeds in DMD 2.085 but not newer. Bisecting shows that the error message begins manifesting when it was introduced ( https://github.com/dlang/dmd/pull/9425 ), however debug versions of DMD have been failing with an assertion failure before that change. The assertion failures began after https://github.com/dlang/dmd/pull/6690 . See also issue 20753 --
