[libc-commits] [libc] [libc] Add front() and erase() to FixedVector (PR #213866)

[Pavel Labath via libc-commits]

labath wrote:

Sorry for the delay. The requested changes make sense, but they're unrelated to this change, so I've created a separate patch for that: https://github.com/llvm/llvm-project/pull/217010

https://github.com/llvm/llvm-project/pull/213866