https://issues.dlang.org/show_bug.cgi?id=12800
--- Comment #8 from [email protected] --- Commits pushed to master at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/fc887f3a41f850c266812b56a4cd770acef7b044 fix Issue 12800 - Fibers are broken on Win64 - save non-volatile registers RSI and RDI https://github.com/D-Programming-Language/druntime/commit/d30668171d145d9c31f47e47717d0787845ff58f Merge pull request #1012 from MartinNowak/fix12800 fix Issue 12800 - Fibers are broken on Win64 --
