[libcxx-commits] [libcxx] [libc++][test] Fix and refactor exception tests for std::vector (PR #117662)

[Louis Dionne via libcxx-commits]

ldionne wrote:

Thanks a lot for the analysis! What I would find amazingly useful would be to first augment the tests for vector to ensure that all the exception safety behavior is tested properly, and we can then proceed to gradually refactor vector's implementation to either make it faster (for example via some relocation work like [this WIP branch of mine](https://github.com/llvm/llvm-project/compare/main...ldionne:llvm-project:wip/wg21-trivial-relocation-discussion-base)) or to change the exception safety guarantee that we provide in libc++ (your PR), depending on what we decide to do. Augmenting the tests *first* has the benefit that we'll gain confidence that our follow-up changes are either not functionally-changing, or they are but exactly in the ways that we expect.

Would you like to do that?

https://github.com/llvm/llvm-project/pull/117662