[libcxx-commits] [libcxx] [libc++] Add the allocator parameter in basic_string::substr (PR #110207)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

See also ad79455fad9fcd798e1788801f579b87a3cb29bc (https://reviews.llvm.org/D138069).

[LWG3752](https://cplusplus.github.io/LWG/issue3752) has been submitted for this but it was closed as NAD.

https://github.com/llvm/llvm-project/pull/110207