[Bug c++/83756] gcc (mingw64) 7.2.0 ICE on boost::call_once

[jacobgodserv at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83756

--- Comment #5 from Jacob Godserv <jacobgodserv at gmail dot com> ---
Created attachment 43081
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43081&action=edit
mingw-w64 7.2.0 TestClass.ii

This is the intermediate output from a 7.2.0 run.