[Bug c++/127940] [modules] Optional bits/stdc++.h lookup rejects valid replacement standard headers

[joker.eph at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127940

--- Comment #2 from Mehdi Amini <joker.eph at gmail dot com> ---
Right, I would have thought that `-nostdinc++` may be the right trigger to
disable it?