`std::alignment_of` is in `type_traits`, `std::exception_ptr` is in <exxception> so they need to be included. Fixes a compile error with xcode when compiling in c++23.
`std::alignment_of` is in `type_traits`, `std::exception_ptr` is in <exxception> so they need to be included. Fixes a compile error with xcode when compiling in c++23.