[Bug c++/70401] New: [c++1z on mingw]compile variadic template failed

[xiangli_zhao at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70401

            Bug ID: 70401
           Summary: [c++1z on mingw]compile variadic template failed
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xiangli_zhao at hotmail dot com
  Target Milestone: ---

Created attachment 38082
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38082&action=edit
a variadic template class fizzbuzz in attached.

mingw version gcc download from 
http://120.52.73.49/tenet.dl.sourceforge.net/project/mingw-w64/Toolchains%20targetting%20Win64/Personal%20Builds/dongsheng-daily/6.x/gcc-6-win64_6.0.0-20160318.7z

when I compile variadic template aa.cpp （see attached), 
g++ -std=c++1z aa.cpp -o aa.exe
I got an error said

Internal compiler error: Error reporting routines re-entered.
libbacktrace could not find executable to open

Thanks a lot