[libcxx-commits] [libcxx] [libc++] Make std::pair trivially copyable if its members are (PR #89652)

[Nico Weber via libcxx-commits]

nico wrote:

> This patch relaxes the condition on std::pair to make it more memcpy'ble.

Should `is_trivially_copyable` be true _more_ often then, instead of less often?

https://github.com/llvm/llvm-project/pull/89652