[Bug libstdc++/120147] [16 Regression] libstdc++-v3 build failure for mingw32 target: src/c++23/print.cc:102:49: error: invalid conversion from 'std::basic_filebuf::native_handle_type' {aka 'int'} to 'void*' [-fpermissive] since r16-427-g86627faec10da5

[lh_mouse at 126 dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120147

--- Comment #6 from LIU Hao <lh_mouse at 126 dot com> ---
(In reply to Jonathan Wakely from comment #3)
> And yet somehow it does. Confirmed.

You forgot to restore the old `CXXFLAGS`.