https://issues.dlang.org/show_bug.cgi?id=17851
--- Comment #2 from github-bugzi...@puremagic.com --- Commit pushed to master at https://github.com/dlang/druntime https://github.com/dlang/druntime/commit/cf8ed256f956f1fb551c314881922b8fc817246b core.sys.windows.winsock2: Don't implement htons() etc. To prevent duplicate symbols when pulling in that object file and the implementations in the ws2_32 library during linking. fix issue 17851 and https://github.com/ldc-developers/ldc/issues/468 --