[libcxx-commits] [libcxx] [libcxx] Align allocation to match `__set_long_cap` and `__get_long_cap` (PR #90292)

[Vitaly Buka via libcxx-commits]

vitalybuka wrote:

> I'm asking where we get the mismatch. My current mental model is that we always allocate an even number of elements (due to `__recommend()` returning an odd number plus one resulting in an even number), which apparently isn't the case. In which part of the code is my mental model failing? 

Got it, will reproduce with details soon.

> Your current solution looks like a band-aid to me and not like it's fixing the underlying issue.

Sorry, it's just how I understood the code, will be happy to improve.



https://github.com/llvm/llvm-project/pull/90292