cc1plus.exe of bundled mingw-w64 segfaults

Hi folks, I'm building a Haskell/C++ hybrid project with a recent revision of ghc on Windows, and noticed that cc1plus.exe always segfaults. The same code builds fine on AppVeyor however and currently I have no clue why it ceases to work on my machine. Is anyone else experiencing a similar problem? I'm not sure if it's worth a trac ticket. Using cc1plus.exe from a newer version of mingw-w64-x86_64-gcc works on my machine, but weird linker errors arise when I attempt to use the newer gcc toolchain to override the bundled one. Is there a way to manually specify mingw-w64 tarball version/urls when configuring ghc? I notice there's an "--enable-distro-toolchain" flag, does it work with building a bindist? Thank you. Regards, Shao Cheng