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

[Alexandre Arsenault via libcxx-commits]

alxarsenault wrote:

Just saw that in the standard 

> The allocator of the returned string is default-constructed: the new allocator might not be a copy of `get_allocator()`.
It would be nice though.

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