Currently versions in portage are snapshots. There are several stable release versions, including 1.0.1 and 2.0. Look at https://sourceforge.net/projects/mingw-w64/files/mingw-w64/mingw-w64-release/ Reproducible: Always
Created attachment 290679 [details] mingw64-runtime-2.0.ebuild Ebuild for mingw64 2.0 derived from the ones in portage. Works for me. Tested with a simple C++ program.
2.0.1 is out. vapier - need to switch from snapshots to releases... Solves problems for me.
Created attachment 303107 [details, diff] mingw64-runtime-2.0.1.ebuild.diff
Comment on attachment 290679 [details] mingw64-runtime-2.0.ebuild please post diffs, not full files
mingw64-runtime-2.0.1 now in the tree and all snapshots dropped