[Bug c++/119400] -fms-extensions has not been updated to the what MSVC does with respect to implicit int

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119400

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
mingw defaults to -fms-extensions. If you don't want these extensions then use
-fno-ms-extensions.

Note the definition of the extensions has changed over time and GCC has not
kept up to date with them; looks to be 20 years out of date now.