[Bug driver/103949] gcc fails to provide a standard conforming C11 or C++17 environment even when specifying -std=c11 or -std=c++17

[manx-bugzilla at problemloesungsmaschine dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103949

--- Comment #13 from Jörn Heusipp <manx-bugzilla at problemloesungsmaschine dot 
de> ---
(In reply to Jonathan Wakely from comment #10)

> Oh I missed the part about __STDCPP_THREADS__ not being defined for
> mingw-w64. That seems like it's worth a distinct bug report that can focus
> just on that.

I have reported https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1003382 for
the debian package.