Dimitry Andric b3e9b07a7d Avoid testing for libc++ internal macros after D99834
As D99834 was meant specifically for FreeBSD, which still uses the older
non-trivial std::pair copy constructors, test for `__FreeBSD__` instead
of relying on a macro which is an internal detail of libc++.

Noted by Louis Dionne.
2021-04-07 18:52:41 +02:00
..
2020-12-03 20:11:11 +01:00