[libcxx-commits] [libcxx] [libc++] Introduce basic_string::__allocate_long_buffer_for_growing (PR #162633)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

LGTM with suggestion. Please run the benchmarks to ensure there's no regression, this  code is sensitive.

https://github.com/llvm/llvm-project/pull/162633