[Bug libstdc++/94973] compile error when trying to use pointer-to-member function as invokable projection to ranges::find()

[db0451 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94973

--- Comment #3 from DB <db0451 at gmail dot com> ---
> Please read https://gcc.gnu.org/bugs and provide the missing information.

Fair point. Let me know if I missed anything still.

    the exact version of GCC;
g++.exe (Rev2, Built by MSYS2 project) 9.3.0

    the system type;
Windows, g++ provided by MSYS2/MinGW64 projects

    the options given when GCC was configured/built;
I didn't build it. Is there a switch that can get this for you?

    the complete command line that triggers the bug;
g++ -I /home/ME/.local/include/range-v3 -std=c++17 -Wall -Wextra -Wpedantic
test.cpp

    the compiler output (error messages, warnings, etc.);
already included.

    the preprocessed file (*.i*) that triggers the bug, generated by adding
-save-temps to the complete compilation command
I will attach this next.


> Why is this marked as a libstdc++ bug?

I chose libstdc++ because I figured it was more likely that some corner case of
std::invoke() was ultimately being hit, rather than the core compiler being at
fault. I guess not.


> I can't reproduce this using range-v3 0.10.0 and GCC 9.3.0 on GNU/Linux, the example compiles fine.

Curioser and curioser. It's fine on clang++ on Windows too. Seems a corner
case.