https://issues.dlang.org/show_bug.cgi?id=18789
--- Comment #2 from github-bugzi...@puremagic.com --- Commit pushed to master at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/d5cc4c5087a1819ac716cb5ea11d988fa667f822 fix conversion from wchar to char in LockingTextWriter.put Fixes the easier part of issue 18789. --