https://issues.dlang.org/show_bug.cgi?id=13350
--- Comment #2 from github-bugzi...@puremagic.com --- Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/ae716b0859c97a9f22ad616070b3d77e9ca6f088 fix Issue 13350 - is(typeof(fun)) causes link error when template fun calls undefined reference Evaluate the type in IsExp, then unspeculative declared symbols. https://github.com/D-Programming-Language/dmd/commit/a6a5dd2cfb32cba7dca55d261d8ddca4ff482704 Merge pull request #3894 from 9rnsr/fix13350 Issue 13350 - is(typeof(fun)) causes link error when template fun calls undefined reference --