Backports - cplusplus/LEWG GitHub Wiki
This page tracks status of papers aiming to update the released standard (high priority).
| Title | Changes | Observable Effects | Status |
|---|---|---|---|
| P2372: Fixing locale handling in chrono formatters | - Make chrono formatters locale dependent by default. - Add L specifier for chrono localized formatting. |
- Output of chrono objects changes. | LEWG |
P2216: std::format improvements |
- User code change from throwing to ill-formed, etc. - Reducing binary code size of format_to. |
- Behavior of existing code. - Binary size. |
Voted into C++23 |
| P2281: Clarifying range adaptor objects | - Make customization point objects invocable regardless of their value category or cv qualification. - Makes silent dangling of certain kinds of bound range adaptor arguments ill-formed. |
- Behavior of existing code. | Voted into C++23 |
P2328: join_view should join all views of ranges. |
- join_view no longer default constructs the cached view when constructed. - join_view iterator increments no longer assigns to the inner view but destroys previous view and emplaces in place instead. |
- Behaviour of existing code |
Voted into C++23 |
| P2325: Views should not be required to be default constructible | - A change in [range.view] concept definition. - Change views in ranges. |
- Behavior of existing code. |
Voted into C++23 |
| P2210: Superior String Splitting | - A change in [range.split]. - Change views in ranges::split_view. |
- Behavior of existing code. |
Voted into C++23 |
| P2367: Remove misuses of list-initialization from Clause 24 | - Removes harmful uses of list initialization from a number of range adaptors. - Implied ordering guarantees of some range adaptors change. |
- Clarifies unclear specification. | Voted into C++23 |
P2231: Missing constexpr in optional and variant
|
- Adds constexpr in missing places in optional and variant
|
- Doesn't affect existing code. | Voted into C++23 |