diff options
Diffstat (limited to 'libcxx/docs/ReleaseNotes/20.rst')
| -rw-r--r-- | libcxx/docs/ReleaseNotes/20.rst | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libcxx/docs/ReleaseNotes/20.rst b/libcxx/docs/ReleaseNotes/20.rst index be330a9..2736061 100644 --- a/libcxx/docs/ReleaseNotes/20.rst +++ b/libcxx/docs/ReleaseNotes/20.rst @@ -55,7 +55,8 @@ Improvements and New Features - The ``_LIBCPP_ENABLE_CXX20_REMOVED_TEMPORARY_BUFFER`` macro has been added to make ``std::get_temporary_buffer`` and ``std::return_temporary_buffer`` available. -- The ``_LIBCPP_ENABLE_CXX20_REMOVED_UNCAUGHT_EXCEPTION`` macro has been added to make ``std::uncaught_exception`` +- The ``std::uncaught_exception`` function was marked as deprecated since C++17 and removed since C++20. The + ``_LIBCPP_ENABLE_CXX20_REMOVED_UNCAUGHT_EXCEPTION`` macro has been added to make ``std::uncaught_exception`` available in C++20 and later modes. - The internal structure ``__compressed_pair`` has been replaced with ``[[no_unique_address]]``, resulting in reduced @@ -69,12 +70,12 @@ Improvements and New Features - The ``_LIBCPP_ABI_BOUNDED_ITERATORS_IN_STD_ARRAY`` ABI configuration was added, which allows storing valid bounds in ``std::array::iterator`` and detecting OOB accesses when the appropriate hardening mode is enabled. -- The ``input_iterator``-pair overload of ``void assign(InputIt, InputIt)`` has been optimized for ``std::vector``, - resulting in a performance improvement of up to 2x for trivial element types (e.g., ``std::vector<int>``), and up +- The ``input_iterator``-pair overload of ``void assign(InputIt, InputIt)`` has been optimized for ``std::vector``, + resulting in a performance improvement of up to 2x for trivial element types (e.g., ``std::vector<int>``), and up to 3.4x for non-trivial element types (e.g., ``std::vector<std::vector<int>>``). -- The ``input_iterator``-pair overload of ``iterator insert(const_iterator, InputIt, InputIt)`` has been optimized - for ``std::vector``, resulting in a performance improvement of up to 10x for ``std::vector<int>``, and up to 2.3x +- The ``input_iterator``-pair overload of ``iterator insert(const_iterator, InputIt, InputIt)`` has been optimized + for ``std::vector``, resulting in a performance improvement of up to 10x for ``std::vector<int>``, and up to 2.3x for ``std::vector<std::vector<int>>``. - On Windows, ``<system_error>``'s ``std::system_category`` is now distinct from ``std::generic_category``. The behavior |