Compiler support for C++23

From cppreference.net

* - 将鼠标悬停在标有星号 * 的单元格上可查看附加弹窗注释。
DR nn - "DR"后的数字 nn 表示缺陷报告所适用的目标C++修订版本，例如：DR20 → C++20。

C++23 核心语言特性

C++23 特性	提案文档	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	Nvidia HPC C++ (ex PGI)*
字面量后缀用于 (有符号) `size_t` ( FTM ) *	P0330R8	11	13	19.43*	13.1.6*	6.5	2022.2	23.9
使 `()` 对 lambda 表达式更可选	P1102R2	11	13	19.44*	13.1.6*	6.3	2022.2	22.5
`if consteval` ( FTM ) *	P1938R3	12	14	19.44*	14.0.0*	6.3	2022.2	24.1
移除垃圾回收支持	P2186R2	12	不适用	19.30*		不适用		不适用
`static_assert` 和 constexpr if 中的窄化上下文转换	P1401R5	9	13 (部分)* 14		14.0.0*		2022.2	20.7
行拼接前修剪空白字符	P2223R2	是	是		是	6.7	2022.2	是
使声明顺序布局成为强制要求	P1847R4	是	是	是	是		2022.2	是
移除混合宽字符串字面量拼接	P2201R1	是	是	是	是	是	是	是
显式对象成员函数 (推导 this ) ( FTM ) *	P0847R7	14	18 19*	<span title="VS 2022 17.2

C++23 标准库特性

C++23 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*
Stacktrace library ( FTM ) *	P0881R7 P2301R1	12 (partial)* 14*		19.34*
`<stdatomic.h>` ( FTM ) *	P0943R6	12	15	19.31*	14.0.3*
`std::is_scoped_enum` ( FTM ) *	P1048R1	11	12	19.30*	13.0.0*
`std::basic_string::contains()` , `std::basic_string_view::contains()` ( FTM ) *	P1679R3	11	12	19.30*	13.0.0*
`std::to_underlying` ( FTM ) *	P1682R3	11	13	19.30*	13.1.6*
Relaxing requirements for time_point<>::clock	P2212R2	N/A	N/A	N/A	N/A
Providing size feedback in the Allocator interface ( FTM ) *	P0401R6		15	19.30*	14.0.3*
`<spanstream>` : string-stream with `std::span` -based buffer ( FTM ) *	P0448R4	12		19.31*
`std::out_ptr()` , `std::inout_ptr()` ( FTM ) *	P1132R8	14	19	19.30*
constexpr `type_info::operator==()` ( FTM ) *	P1328R1	12	17	19.33* * 19.34*	15.0.0*
Iterator pair constructors for `std::stack` and `std::queue` ( FTM ) *	P1425R4	12	14	19.31*	14.0.3*
Non-deduction context for allocators in container deduction guides	P1518R2	12 *	13 *	19.31* *	13.1.6* *
`ranges::starts_with()` and `ranges::ends_with()` ( FTM ) *	P1659R3		17 (partial)* 18	19.31*	16.0.0*
Prohibiting std::basic_string and std::basic_string_view construction from `nullptr`	P2166R1	12	13	19.30*	13.1.6*
`std::invoke_r()` ( FTM ) *	P2136R3	12	17	19.31*	15.0.0*
Range constructor for std::basic_string_view	P1989R2	11	14	19.30*	14.0.3*
Default template arguments for std::pair 's forwarding constructor	P1951R1	14	14	19.30*	14.0.3*
Remove Garbage Collection and Reachability-Based Leak Detection ( library support )	P2186R2	12	14	19.30*	14.0.3*
zip: `views::zip` , `views::zip_transform` , `views::adjacent` , and `views::adjacent_transform` ( FTM ) *	P2321R2	13	15 (partial)*	19.33* (partial)* * * 19.37*	14.0.3*
Heterogeneous erasure overloads for associative containers ( FTM ) *	P2077R3			19.32*
`std::byteswap()` ( FTM ) *	P1272R4	12	14	19.31*	14.0.3*
Printing volatile T *	P1147R1	11.3	14	19.31*	14.0.3*
`basic_string::resize_and_overwrite()` ( FTM ) *	P1072R10	12	14	19.31*	14.0.3*
Monadic operations for std::optional ( FTM ) *	P0798R8	12	14	19.32*	14.0.3*
`std::move_only_function` ( FTM ) *	P0288R9	12		19.32*
Add a conditional noexcept specification to std::exchange	P2401R0	12	14	19.25*	14.0.3*
Require `std::span` & std::basic_string_view to be TriviallyCopyable	P2251R1	Yes	Yes	Yes	Yes
Clarifying the status of the “C headers”	P2340R1	Yes	Yes	Yes	Yes
`<expected>` ( FTM ) *	P0323R12 P2549R1	12	16	19.33*	15.0.0*
constexpr for `<cmath>` and `<cstdlib>` ( FTM ) *	P0533R9	4.6 (partial)*
`std::unreachable()` ( FTM ) *	P0627R6	12	15	19.32*	14.0.3*
Deprecating std::aligned_storage and std::aligned_union	P1413R3	13	16	19.33*
`std::reference_constructs_from_temporary` & `std::reference_converts_from_temporary` ( FTM ) *	P2255R2	13 (partial)* 14	21 (partial)*
constexpr std::unique_ptr ( FTM ) *	P2273R3	12	16	19.33*	15.0.0*
Constructing containers and strings from ranges with `ranges::to()` , tagged constructors, insert and assign member functions ( FTM ) * ( FTM ) *	P1206R7	14 (partial)* 15	17	19.34*	15.0.0*
Pipe support for user-defined range adaptors ( `ranges::range_adaptor_closure` , `std::bind_back` ) ( FTM ) * ( FTM ) *	P2387R3	13 (partial)* 14	19	19.34*
`ranges::iota()` , `ranges::shift_left()` , and `ranges::shift_right()` ( FTM ) * ( FTM ) *	P2440R1	13 (partial)*		19.34*
`views::join_with` ( FTM ) *	P2441R2	13		19.34*
`views::chunk` and `views::slide` ( FTM ) * ( FTM ) *	P2442R1	13		19.33*
`views::chunk_by` ( FTM ) *	P2443R1	13	18	19.33*	16.0.0*
`std::mdspan` : a non-owning multidimensional array reference ( FTM ) *	P0009R18 P2599R2 P2604R0 P2613R1 P2763R1		17 (partial)* 18	19.39*	15.0.0*
`<flat_map>` ( FTM ) *	P0429R9	15	20
`<flat_set>` ( FTM ) *	P1222R4	15	21
`ranges::find_last()` , `ranges::find_last_if()` , and `ranges::find_last_if_not()` ( FTM ) *	P1223R5	13	19	19.36*
Freestanding Library: Easy `<utility>` , `<ranges>` , and `<iterator>`	P1642R11	13 *		N/A
`views::stride` ( FTM ) *	P1899R3	13		19.34*
Compatibility between std::tuple and tuple-like objects ( FTM ) *	P2165R4	14	2.9 (partial)*	19.36* (partial) * 19.37*	partial*
Rectifying constant iterators, sentinels, and ranges. views:: as_const ( FTM ) *	P2278R4	13		19.35* (partial)* 19.36*
Formatting Ranges ( FTM ) *	P2286R8	15 (partial)* 15.2	16	19.37* (partial)* 19.39* (partial)* 19.41* (partial)* 19.42*	15.0.0*
Improve default container formatting ( FTM ) *	P2585R1	15	16 (partial)* 17	19.42*	15.0.0*
Formatted output library `<print>` ( FTM ) *	P2093R14 P2539R4	14	17 (partial)* 18	19.37*	15.0.0* * 16.0.0*
Formatting std::thread::id and `std::stacktrace` ( FTM ) *	P2693R1	14	17 (partial)*	19.38*	15.0.0*
constexpr for integral overloads of `std::to_chars()` and `std::from_chars()` ( FTM ) *	P2291R3	13	16	19.34*	15.0.0*
`ranges::contains()` and `ranges::contains_subrange()` ( FTM ) *	P2302R4	13	18 (partial)* 19	19.34*	16.0.0* *
Ranges fold algorithms ( FTM ) *	P2322R6	13		19.35*
`views::cartesian_product` ( FTM ) *	P2374R4 P2540R1	13		19.37*
Adding move-only types support for comparison concepts ( `equality_comparable` , `totally_ordered` , `three_way_comparable` ) ( FTM ) *	P2404R3			19.36*
Ranges iterators as inputs to non-ranges algorithms ( FTM ) *	P2408R5			19.34*
constexpr std::bitset ( FTM ) *	P2417R2	13	16	19.34*	15.0.0*
`basic_string::substr()` `&&`	P2438R2		16	19.34*	15.0.0*
`views::as_rvalue` ( FTM ) *	P2446R2	13	16	19.34*	15.0.0*
Standard Library Modules ( FTM ) *	P2465R3	15*	17 (partial)*	19.35* (partial)* 19.36*
`std::forward_like()` ( FTM ) *	P2445R1	14	16	19.34*	15.0.0*
Support exclusive mode for std::fstream ( FTM ) *	P2467R1	12	18	19.36*	16.0.0*
`views::repeat` ( FTM ) *	P2474R2	13	17	19.36*	15.0.0*
Relaxing range adaptors to allow for move-only types ( FTM ) *	P2494R2	14	17	19.34*	15.0.0*
std::basic_string_view range constructor should be explicit	P2499R0	12.2	16	19.34*	15.0.0*
`std::generator` : synchronous coroutine generator for ranges ( FTM ) *	P2502R2 P2787R0	14		19.43*
Add a conditional noexcept specification to std::apply	P2517R1	10	18	19.34*	16.0.0*
Explicit lifetime management ( `std::start_lifetime_as` ) ( FTM ) *	P2590R2 P2679R2
Clarify handling of encodings in localized formatting of chrono types ( FTM ) *	P2419R2	15*		19.34* *
std::move_iterator should not always be `input_iterator` ( FTM ) *	P2520R0	12.3*	17*	19.34* *	15.0.0*
Deduction guides update for explicit object parameter call operators	LWG3617	14		19.34*
Deduction guides update for static operator ( )	P1169R4	13	16	19.39*	15.0.0*
Standard names and library support for extended floating-point types	P1467R9	13		19.37* *
Monadic operations for `std::expected` ( FTM ) *	P2505R5	13	17	19.36*	15.0.0*
`views::enumerate` ( FTM ) *	P2164R9	13		19.37*
`std::is_implicit_lifetime` ( FTM ) *	P2674R1		20
std::common_reference_t of std::reference_wrapper should be a reference type ( FTM ) * ( FTM ) *	P2655R3			19.37*
Disallowing user specialization of std::allocator_traits	P2652R2		19	19.37*
Deprecating std::numeric_limits::has_denorm	P2614R2		18	19.37*	16.0.0*
Making Multi-Param Constructors Of `view` s `explicit`	P2711R1		17 (partial)*	19.36* *	15.0.0*
DR20: Relaxing Ranges Just A Smidge ( FTM ) *	P2609R3	15	20	19.37*
DR20: Stashing Stashing Iterators For Proper Flattening	P2770R0	14	18	19.37*
DR17: std::visit() for classes derived from std::variant ( FTM ) *	P2162R2	11.3	13	19.20* * 19.30*	13.1.6*
DR20: Conditionally borrowed ranges	P2017R1	11	16	19.30*
DR20: Repairing input range adaptors and std::counted_iterator	P2259R1	12		19.30* (partial)* 19.31*
DR20: `views::join` should join all views of ranges	P2328R1	11.2	15	19.30*	14.0.3*
DR20: `view` does not require `default_initializable` ( FTM ) *	P2325R3	11.3	16	19.30*	15.0.0*
DR20: Range adaptor objects bind arguments by value	P2281R1	11	14	19.29 (16.10)* (partial)* 19.31*	14.0.3*
DR20: `constexpr` for std::optional and std::variant ( FTM ) * ( FTM ) *	P2231R1	11.3 (partial)* 12	13 (partial)* 19	19.31*	13.1.6* (partial)
DR20: `views::lazy_split` and redesigned `views::split`	P2210R2	12	16	19.31*	15.0.0*
DR20: Fix ranges::istream_view	P2432R1	12	16	19.31*	15.0.0*
DR20: `view` with ownership ( FTM ) *	P2415R2	12	14	19.31*	14.0.3*
DR20: Fixing locale handling in chrono formatters ( FTM ) *	P2372R3 P2418R2	13		19.31*
DR20: Cleaning up integer-class types	P2393R1			19.32*
DR20: Compile-time format string checks; Reducing binary code size of `std::format()` family ( FTM ) *	P2216R3	13	14 (partial)* 15	19.32*	14.0.3*
DR20: Add support for non-const-formattable types to std::format	P2418R2	13	15	19.32*	14.0.3*
DR20: `std::basic_format_string`	P2508R1	13	15	19.35*	14.0.3*
DR20: Poison Pills are Too Toxic ( FTM ) *	P2602R2	14	19	19.36*
DR20: std::format fill character allowances	P2572R1	14	17	19.37*
DR20: Improving std::format 's width estimation	P2675R1	14	17	19.38*
DR20: std::barrier 's phase completion guarantees ( FTM ) *	P2588R3			19.28 (16.8)* * 19.36*
C++23 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Technical specifications
Symbols index
External libraries

C++11
C++14
C++17
C++20
C++23
C++26

cppreference.net

Namespaces

Variants

Compiler support for C++23

C++23 核心语言特性

C++23 标准库特性