[libcxx-commits] [libcxx] [libc++][sstream] Add deleted special member functions (PR #80254)

[Hristo Hristov via libcxx-commits]

https://github.com/H-G-Hristov commented:

There are no notes why these were missing, so I propose to add them in accordance with the standard.

https://github.com/llvm/llvm-project/pull/80254