tree 8b18c92932b1ecb0c89ad6cbb4e75b12317758fc
parent a068bbed555743f6411c780a188312707ccb5e35
author Arthur O'Dwyer <arthur.j.odwyer@gmail.com> 1637212043 -0500
committer Copybara-Service <copybara-worker@google.com> 1637352673 -0800

[libc++] Test that our algorithms never copy a user-provided comparator.

This is not mandated by the standard, so it goes in libcxx/test/libcxx/.
It's certainly arguable that the algorithms changed here
(`is_heap`, `is_sorted`, `min`, `max`) are harmless and we should
just let them copy their comparators once. But at the same time,
it's nice to have all our algorithms be 100% consistent and never
copy a comparator, not even once.

Differential Revision: https://reviews.llvm.org/D114136

GitOrigin-RevId: b07b5bd72716625e0976a84d23652d94d8d0165a