https://issues.dlang.org/show_bug.cgi?id=14131
--- Comment #7 from github-bugzi...@puremagic.com --- Commits pushed to 2.067 at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/ee94dbddf7700a5e5864d485e66002e31e6fa670 Partial fix for Issue 14131 - va_copy is broken on posix X86_64 https://github.com/D-Programming-Language/druntime/commit/02270ea991f4218764d2c2cc867c56f082672d4c Merge pull request #1158 from yebblies/va_copy --