[Bug c++/108204] pr84973-2.C fails with wrong error on mingw

[nightstrike at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108204

--- Comment #2 from nightstrike <nightstrike at gmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> Try with -fno-ms-extensions or try -fms-extension on Linux.

Hey, we have a winner!  -fms-extension on Linux results in the bad error, and
-fno-ms-extensions on mingw results in the good one!