https://issues.dlang.org/show_bug.cgi?id=15586
--- Comment #7 from github-bugzi...@puremagic.com --- Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/2b09b8b59cc94ff23f52f3d18212c727d3e89d7b Fix Phobos issue #15586 - std.utf.toUTF8() halts on invalid dchar. https://github.com/D-Programming-Language/phobos/commit/cadc8197614dac7313ffc44dd4e81c51c17ee8f3 Merge pull request #3943 from tsbockman/dchar-crash Fix Phobos Issue 15586 --