C++ compiler support

 

C++

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)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

C++ language

General topics
Preprocessor Comments	Keywords Escape sequences
Flow control
Conditional execution statements
if	switch
Iteration statements (loops)
for range-for (C++11)	while do-while
Jump statements
continue - break	goto - return
Functions
Function declaration
Lambda function expression
inline specifier
Dynamic exception specifications (until C++17*)
noexcept specifier (C++11)
Exceptions
throw-expression try block	handler
Namespaces
Namespace declaration	Namespace aliases
Types
Fundamental types Enumeration types Function types	Class/struct types Union types
Specifiers
const/volatile decltype (C++11) auto (C++11)	constexpr (C++11) consteval (C++20) constinit (C++20)
Storage duration specifiers
Initialization
Default-initialization Value-initialization Zero-initialization Copy-initialization Direct-initialization	Aggregate initialization List-initialization (C++11)   Constant initialization Reference initialization

Expressions
Value categories Order of evaluation	Operators Operator precedence
Alternative representations
Literals
Boolean - Integer - Floating-point
Character - String - nullptr (C++11)
User-defined (C++11)
Utilities
Attributes (C++11)
Types
typedef declaration
Type alias declaration (C++11)
Casts
Implicit conversions static_cast const_cast	Explicit conversions dynamic_cast reinterpret_cast
Memory allocation
new expression	delete expression
Classes
Class declaration Constructors this pointer	Access specifiers friend specifier
Class-specific function properties
Virtual function override specifier (C++11)   final specifier (C++11)	explicit (C++11) static
Special member functions
Default constructor Copy constructor Move constructor (C++11)	Copy assignment Move assignment (C++11) Destructor
Templates
Class template Function template	Template specialization Parameter packs (C++11)
Miscellaneous
Inline assembly	History of C++

 

The following table presents compiler support for new C++ features. These include C++11, C++14, C++17, and later accepted revisions (C++20/C++2a) to the standard, as well as various technical specifications.

C++2a features

Note that this list may change, as the draft C++2a standard evolves.

C++2a core language features

C++2a feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc
Allow lambda-capture [=, this]	P0409R2	8	6	19.22*	<span title=" ">10.0*</span>	5.1
__VA_OPT__	P0306R4 P1042R1	8 (partial)*	9		<span title=" ">10.0*	5.1
Designated initializers	P0329R4	4.7 (partial)* 8	3.0 (partial)* 10	19.21*		5.1
template-parameter-list for generic lambdas	P0428R2	8	9	19.22*		5.1
Default member initializers for bit-fields	P0683R1	8	6		<span title=" ">10.0*</span>	5.1
Initializer list constructors in class template argument deduction	P0702R1	8	6	19.14*		5.0
const&-qualified pointers to members	P0704R1	8	6	19.0 (2015)*	<span title=" ">10.0*</span>	5.1
Concepts	P0734R0	6 (TS only)		19.23*
Lambdas in unevaluated contexts	P0315R4	9
Three-way comparison operator	P0515R3		8 (partial)*	19.20*		5.1
Simplifying implicit lambda capture	P0588R1	8				5.1
init-statements for range-based for	P0614R1	9	8		<span title=" ">11.0*</span>
Default constructible and assignable stateless lambdas	P0624R2	9	8	19.22*		5.1
const mismatch with defaulted copy constructor	P0641R2	9	8	19.21* (partial)		5.1
Access checking on specializations	P0692R1	Yes	8 (partial)*			5.1
ADL and function templates that are not visible	P0846R0	9	9	19.21*		5.1
Less eager instantiation of constexpr functions	P0859R0	5.2 (partial)* 9
Attributes [[likely]] and [[unlikely]]	P0479R5	9				5.1
Make typename more optional	P0634R3	9				5.1
Pack expansion in lambda init-capture	P0780R2	9	9	19.22*
Attribute [[no_unique_address]]	P0840R2	9	9			5.1
DR: Relaxing the structured bindings customization point finding rules	P0961R1	8	8	19.21*	<span title=" ">10.0*</span>	5.1
DR: Relaxing the range-for loop customization point finding rules	P0962R1	8				5.1
DR: Allow structured bindings to accessible members	P0969R0	8	8	19.21*	<span title=" ">10.0*</span>	5.1
Destroying operator delete	P0722R3	9	6		<span title=" ">10.0*</span>
Class types in non-type template parameters	P0732R2	9
Deprecate implicit capture of this via [=]	P0806R2	9		19.22*		5.1
explicit(bool)	P0892R2	9	9	19.22*		5.1
Integrating feature-test macros	P0941R2	5	3.4	19.15* (partial) 19.20*		5.0
Prohibit aggregates with user-declared constructors	P1008R1	9	8	19.20*	<span title=" ">10.0*</span>	5.1
constexpr virtual function	P1064R0	9	9			5.1
Consistency improvements for comparisons	P1120R0		8 (partial)	19.22*		5.1
char8_t	P0482R6	9	7	19.22*		5.1
std::is_constant_evaluated()	P0595R2	9	9			5.1
constexpr try-catch blocks	P1002R1	9	8		<span title=" ">10.0*</span>	5.1
Immediate functions	P1073R3					5.1
Nested inline namespaces	P1094R2	9	8			5.1
Yet another approach for constrained declarations	P1141R2
Signed integers are two's complement	P1236R1	9	9
constexpr dynamic_cast and polymorphic typeid	P1327R1		9			5.1
Changing the active member of a union inside constexpr	P1330R0	9	9	19.10*		5.1
Coroutines	P0912R5		8 (partial)			5.1
Parenthesized initialization of aggregates	P0960R3					5.1
DR: Array size deduction in new-expressions	P1009R2		9			5.1
Modules	P1103R3		8 (partial)
Stronger Unicode requirements	P1041R4 P1139R2		Yes			N/A
<=> != ==	P1185R2			19.22*		5.1
DR: Explicitly defaulted functions with different exception specifications	P1286R2		9			5.1
Lambda capture and storage class specifiers of structured bindings	P1091R3 P1381R1	10	8 (partial)			5.1
Permit conversions to arrays of unknown bound	P0388R4					5.2
More constexpr containers	P0784R7					5.2
Deprecating some uses of volatile	P1152R4	10				5.2
constinit	P1143R2	10
Deprecate comma operator in subscripts	P1161R3	10	9			5.2
[[nodiscard]] with message	P1301R4		9			5.2
Unevaluated asm-declaration in constexpr functions	P1668R1	10	9
DR: [[nodiscard]] for constructors	P1771R1					5.2
DR: Implicit move for more local objects and rvalue references	P1825R0					5.2
C++2a feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc

C++2a library features

C++2a feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*
std::endian	P0463R1	8	7	19.22*
Extending std::make_shared() to support arrays	P0674R1
Floating point atomic	P0020R6			19.22*
Synchronized buffered ostream	P0053R7
constexpr for <algorithm> and <utility>	P0202R3		8
More constexpr for <complex>	P0415R1	9	7 (partial)
Make std::memory_order a scoped enumeration	P0439R0	9	9
String prefix and suffix checking	P0457R2	9	6	19.21*
Library support for operator<=> <compare>	P0515R3		7	19.20* (partial)
std::remove_cvref	P0550R2	9	6	19.20*
[[nodiscard]] in the standard library	P0600R1	9	7 (partial)	19.13* (partial) 19.22*
Using std::move in numeric algorithms	P616R0	9		19.23*
Utility to convert a pointer to a raw pointer	P0653R2	8	6	19.22*
Atomic std::shared_ptr and std::weak_ptr	P0718R2
std::span	P0122R7		7
Calendar and timezone	P0355R7		7 (partial)
<version>	P0754R2	9	7	19.22*
Comparing unordered containers	P0809R0			16.0*
ConstexprIterator requirements	P0858R0			19.11*
std::basic_string::reserve() should not shrink	P0966R1		8
std::atomic_ref	P0019R8
contains() member function of associative containers	P0458R2	9		19.21*
DR: Guaranteed copy elision for piecewise construction	P0475R1	9
std::bit_cast()	P0476R2
Integral power-of-2 operations	P0556R3	9
Improving the return value of erase-like algorithms	P0646R1	9		19.21*
std::destroying_delete	P0722R3	9	9
std::is_nothrow_convertible	P0758R1	9	9	19.23*
Add shift to <algorithm>	P0769R2			19.21*
std::type_identity	P0887R1	9	8	19.21*
Concepts library	P0898R3			19.23*
constexpr comparison operators for std::array	P1023R0		8
std::unwrap_ref_decay and std::unwrap_reference	P0318R1	9	8	19.21*
std::bind_front()	P0356R5	9
std::reference_wrapper for incomplete types	P0357R3	9	8
Fixing operator>>(basic_istream&, CharT*)	P0487R1		8	19.23*
Library support for char8_t	P0482R6	9		19.22*
Utility functions to implement uses-allocator construction	P0591R4	9
DR: std::variant and std::optional should propagate copy/move triviality	P0602R4	8.3	8	19.11*
A sane std::variant converting constructor	P0608R3	10	9
std::function's move constructor should be noexcept	P0771R1	7.2	6	19.22*
The One Ranges Proposal	P0896R4
Heterogeneous lookup for unordered containers	P0919R3			19.23*
<chrono> zero(), min(), and max() should be noexcept	P0972R0	9	8	19.14*
constexpr in std::pointer_traits	P1006R1	9	8
std::assume_aligned()	P1007R3	9
Remove comparison operators of std::span	P1085R2		8
Make stateful allocator propagation more consistent for operator+(basic_string)	P1165R1	10
Consistent container erasure	P1209R0	9	8
std::lerp() and std::midpoint()	P0811R3	9	9
Usability enhancements for std::span	P1024R3		9
DR: Make create_directory() Intuitive	P1164R1	8.3		19.20*
std::ssize() and unsigned extent for std::span	P1227R2		9
Traits for (un)bounded arrays	P1357R0	9	9
Bit operations	P0553R4		9
std::source_location	P1208R5
C++2a feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*

C++17 features

C++17 core language features

C++17 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc
New auto rules for direct-list-initialization	N3922	5	3.8	19.0 (2015)*	Yes	4.10.1	17.0					10.3		17.7
static_assert with no message	N3928	6	2.5	19.10*	Yes	4.12	18.0					10.3		17.7
typename in a template template parameter	N4051	5	3.5	19.0 (2015)*	Yes	4.10.1	17.0					10.3		17.7
Removing trigraphs	N4086	5	3.5	16.0*	Yes	5.0	19.0.1					10.3
Nested namespace definition	N4230	6	3.6	19.0 (Update 3)*	Yes	4.12	17.0					10.3		17.7
Attributes for namespaces and enumerators	N4266	4.9 (partial)* 6	3.6	19.0 (2015)*	Yes	4.11	17.0					10.3		17.7
u8 character literals	N4267	6	3.6	19.0 (2015)*	Yes	4.11	17.0					10.3		17.7
Allow constant evaluation for all non-type template arguments	N4268	6	3.6	19.12*	Yes	5.0	19.0.1					10.3
Fold Expressions	N4295	6	3.6	19.12*	Yes	4.14	19.0					10.3		18.1
Unary fold expressions and empty parameter packs	P0036R0	6	3.9	19.12*	Yes	4.14						10.3
Remove Deprecated Use of the register Keyword	P0001R1	7	3.8	19.11*	Yes	4.13	18.0					10.3		17.7
Remove Deprecated operator++(bool)	P0002R1	7	3.8	19.11*	Yes	4.13	18.0					10.3		17.7
Make exception specifications part of the type system	P0012R1	7	4	19.12*	Yes	4.14	19.0					10.3
Aggregate initialization of classes with base classes	P0017R1	7	3.9	19.14*	Yes	5.0	19.0.1					10.3
__has_include in preprocessor conditionals	P0061R1	5	Yes	19.11*	Yes	4.13	18.0					10.3		17.7
DR: New specification for inheriting constructors (DR1941 et al)	P0136R1	7	3.9	19.14*	Yes							10.3
Lambda capture of *this	P0018R3	7	3.9	19.11*	Yes	4.14	19.0					10.3		18.1
Direct-list-initialization of enumerations	P0138R2	7	3.9	19.11*	Yes	4.14	18.0					10.3
constexpr lambda expressions	P0170R1	7	5	19.11*	Yes	4.14	19.0					10.3		18.1
Differing begin and end types in range-based for	P0184R0	6	3.9	19.10*	Yes	4.12	18.0					10.3		17.7
[[fallthrough]] attribute	P0188R1	7	3.9	19.10*	Yes	4.13	18.0					10.3		17.7
[[nodiscard]] attribute	P0189R1	7	3.9	19.11*	Yes	4.13	18.0					10.3		17.7
[[maybe_unused]] attribute	P0212R1	7	3.9	19.11*	Yes	4.13	18.0					10.3		17.7
Hexadecimal floating-point literals	P0245R1	3.0	Yes	19.11*	Yes	4.13	18.0					10.3		17.7
Using attribute namespaces without repetition	P0028R4	7	3.9	19.11*	Yes	4.13	18.0					10.3		17.7
Dynamic memory allocation for over-aligned data	P0035R4	7	4	19.12*	<span title=" ">10.0*</span>	4.14						10.3
Class template argument deduction	P0091R3	7	5	19.14*	Yes	5.0	19.0.1					10.3		19.1
Non-type template parameters with auto type	P0127R2	7	4	19.14*	Yes	5.0	19.0.1					10.3		19.1
Guaranteed copy elision	P0135R1	7	4	19.13*	Yes	5.0	19.0.1					10.3		19.1
Replacement of class objects containing reference members	P0137R1	7	6	19.14*	Yes	5.0						10.3
Stricter expression evaluation order	P0145R3	7	4	19.14*	Yes	5.0	19.0.1					10.3
Structured Bindings	P0217R3	7	4	19.11*	Yes	4.14	19.0					10.3		18.1
Ignore unknown attributes	P0283R2	Yes	3.9	19.11*	Yes	4.13	18.0					10.3		17.7
constexpr if statements	P0292R2	7	3.9	19.11*	Yes	4.14	19.0					10.3		18.1
init-statements for if and switch	P0305R1	7	3.9	19.11*	Yes	4.14	18.0					10.3		18.1
Inline variables	P0386R2	7	3.9	19.12*	Yes	4.14	19.0					10.3		18.1
Removing Deprecated Exception Specifications from C++17	P0003R5	7	4	19.10*	Yes	4.14	19.0					10.3
Pack expansions in using-declarations	P0195R2	7	4	19.14*	Yes	5.0						10.3
DR: Matching of template template-arguments excludes compatible templates	P0522R0	7	4	19.12*	Yes	5.0	19.0.1					10.3
C++17 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc

C++17 library features

C++17 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Intel Parallel STL	Sun/Oracle C++*	Embarcadero C++ Builder*
std::void_t	N3911	6	3.6	19.0 (2015)*	Yes		N/A		10.3
std::uncaught_exceptions()	N4259	6	3.7	19.0 (2015)*	Yes		N/A
std::size(), std::empty() and std::data()	N4280	6	3.6	19.0 (2015)*	Yes		N/A		10.3
Improving std::pair and std::tuple	N4387	6	4	19.0 (Update 2)*	Yes		N/A		10.3
std::bool_constant	N4389	6	3.7	19.0 (2015)*	Yes		N/A		10.3
std::shared_mutex (untimed)	N4508	6	3.7	19.0 (Update 2)*	Yes		N/A		10.3
Type traits variable templates	P0006R0	7	3.8	19.0 (Update 2)*	Yes		N/A		10.3
Logical operator type traits	P0013R1	6	3.8	19.0 (Update 2)*	Yes		N/A		10.3
Standardization of Parallelism TS	P0024R2	9*		19.14*			18.0*
std::clamp()	P0025R0	7	3.9	19.0 (Update 3)*	<span title=" ">10.0*</span>		N/A		10.3
Hardware interference size	P0154R1			19.11*			N/A
(nothrow-)swappable traits	P0185R1	7	3.9	19.0 (Update 3)*	<span title=" ">10.0*</span>		N/A		10.3
File system library	P0218R1	8	7	19.14*	<span title=" ">11.0*</span>		N/A		10.3
std::string_view	N3921 P0220R1	7	4	19.10*	<span title=" ">10.0*</span>		N/A		10.3
std::any	P0220R1	7	4	19.10*	<span title=" ">10.0*</span>		N/A		10.3
std::optional	P0220R1	7	4	19.10*	<span title=" ">10.0*</span>		N/A		10.3
Polymorphic memory resources	P0220R1	9		19.13*			N/A		10.3
Mathematical special functions	P0226R1	7		19.14*			N/A		10.3
C++17 should refer to C11 instead of C99	P0063R3	9	7	19.0 (2015)* (partial)*			N/A
Splicing Maps and Sets	P0083R3	7	8	19.12*	<span title=" ">10.0*</span>		N/A
std::variant	P0088R3	7	4	19.10*	<span title=" ">10.0*</span>		N/A		10.3
std::make_from_tuple()	P0209R2	7	3.9	19.10*	Yes		N/A		10.3
std::has_unique_object_representations	P0258R2	7	6	19.11*	Yes		N/A		10.3
std::gcd() and std::lcm()	P0295R0	7	4	19.11*	Yes		N/A		10.3
std::not_fn	P0005R4 P0358R1	7	3.9	19.12*	Yes		N/A		10.3
Elementary string conversions	P0067R5	8 (no FP)	7 (no FP)	19.14* (no FP)*			N/A
std::shared_ptr and std::weak_ptr with array support	P0414R2	7		19.12*			N/A		10.3
std::scoped_lock	P0156R2	7	5	19.11*	Yes		N/A		10.3
std::byte	P0298R3	7	5	19.11*	Yes		N/A		10.3
std::is_aggregate	LWG2911	7	5	19.15*	Yes		N/A		10.3
C++17 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Intel Parallel STL	Sun/Oracle C++*	Embarcadero C++ Builder*

C++14 features

C++14 core language features

C++14 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc
Tweaked wording for contextual conversions	N3323	4.9	3.4	18.0*	Yes	4.9	16.0				5.15	10.3	8.6	16.1	9.0
Binary literals	N3472	4.3 (GNU) 4.9	2.9	19.0 (2015)*	Yes	4.10	11.0				5.14	10.3	8.6	2015	9.0
decltype(auto), Return type deduction for normal functions	N3638	4.8 (partial)* 4.9	3.3 (partial)* 3.4	19.0 (2015)*	Yes	4.9	15.0				5.15	10.3	8.6	16.1	9.0
Initialized/Generalized lambda captures (init-capture)	N3648	4.5 (partial) 4.9	3.4	19.0 (2015)*	Yes	4.10	15.0				5.15	10.3	8.6	16.1	9.0
Generic (polymorphic) lambda expressions	N3649	4.9	3.4	19.0 (2015)*	Yes	4.10	16.0				5.15	10.3	8.6	16.1	9.0
Variable templates	N3651	5	3.4	19.0 (Update 2)*	Yes	4.11	17.0				5.15	10.3	8.6	17.4	9.0
Extended constexpr	N3652	5	3.4	19.10*	Yes	4.11	17.0				5.15	10.3	8.6	17.4	9.0
Member initializers and aggregates (NSDMI)	N3653	5	3.3	19.10*	Yes	4.9	16.0				5.14	10.3	8.6	16.1	9.0
Clarifying memory allocation (avoiding/fusing allocations)	N3664	N/A	3.4	N/A	Yes	N/A					N/A	10.3	8.6	17.4
[[deprecated]] attribute	N3760	4.9	3.4	19.0 (2015)*	Yes	4.9	15.0* 16.0				5.14	10.3	8.6	16.1	9.0
Sized deallocation	N3778	5	3.4	19.0 (2015)*	Yes	4.10.1	17.0				5.14	10.3	8.6	16.1
Single quote as digit separator	N3781	4.9	3.4	19.0 (2015)*	Yes	4.10	16.0				5.14	10.3	8.6	2015	9.0
C++14 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc

C++14 library features

C++14 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*
constexpr for <complex>	N3302	5	3.4	19.0 (2015)*	Yes		5.15	10.3
std::result_of and SFINAE	N3462	5	Yes	19.0 (Update 2)*	Yes		5.15	10.3
constexpr for <chrono>	N3469	5	3.4	19.0 (2015)*	Yes		5.15	10.3
constexpr for <array>	N3470	5	3.4	19.0 (2015)*	Yes		5.15	10.3
constexpr for <initializer_list>, <utility> and <tuple>	N3471	5	3.4	19.0 (2015)*	Yes		5.15	10.3
Improved std::integral_constant	N3545	5	3.4	19.0 (2015)*	Yes		5.15	10.3
User-defined literals for <chrono> and <string>	N3642	5	3.4	19.0 (2015)*	Yes		5.15	10.3
Null forward iterators	N3644	5 (partial)	3.4	19.0 (2015)*	Yes		5.15	10.3
std::quoted	N3654	5	3.4	19.0 (2015)*	Yes		5.15	10.3
Heterogeneous associative lookup	N3657	5	3.4	19.0 (2015)*	Yes		5.15	10.3
std::integer_sequence	N3658	5	3.4	19.0 (2015)*	Yes		5.15	10.3
std::shared_timed_mutex	N3659	5	3.4	19.0 (2015)*	Yes		5.15	10.3
std::exchange	N3668	5	3.4	19.0 (2015)*	Yes		5.15	10.3
fixing constexpr member functions without const	N3669	5	3.4	19.0 (2015)*	Yes		5.15	10.3
std::get<T>()	N3670	5	3.4	19.0 (2015)*	Yes		5.15	10.3
Dual-Range std::equal, std::is_permutation, std::mismatch	N3671	5	3.4	19.0 (2015)*	Yes		5.15	10.3
C++14 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*

C++11 features

C++11 core language features

C++11 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc	HP aCC	Digital Mars C++
C99 preprocessor	N1653	4.3	Yes	19.0 (2015)* (partial)*	Yes	4.1	11.1				5.9	Yes	8.4	2015	7.0	A.06.25	Yes
static_assert	N1720	4.3	2.9	16.0*	Yes	4.1	11.0				5.13	Yes	8.4	2015	7.0	A.06.25	8.52
Right angle brackets	N1757	4.3	Yes	14.0*	Yes	4.1	11.0				5.13	Yes	8.4	2015	7.0
Extended friend declarations	N1791	4.7	2.9	16.0* (partial) 18.0*	Yes	4.1	11.1* 12.0				5.13	Yes	8.4	2015	7.0	A.06.25
long long	N1811	Yes	Yes	14.0*	Yes	Yes	Yes				Yes	Yes	8.4	2015	7.0	Yes	Yes
Compiler support for type traits	N1836	4.3	3.0	14.0*	Yes	4.0	10.0				5.13	Yes	8.4	2015		6.16
auto	N1984	4.4	Yes	16.0*	Yes	3.9	11.0 (v0.9) 12.0				5.13	Yes	8.4	2015	7.0	A.06.25
Delegating constructors	N1986	4.7	3.0	18.0*	Yes	4.7	14.0				5.13	Yes	8.4	2015	7.0	A.06.28
extern template	N1987	3.3	Yes	12.0*	Yes	3.9	9.0				5.13	Yes	8.4	2015	7.0	A.06.25
constexpr	N2235	4.6	3.1	19.0 (2015)* (partial)	Yes	4.6	13.0* 14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Template aliases	N2258	4.7	3.0	18.0*	Yes	4.2	12.1				5.13	Yes	8.4	2015	7.0	A.06.27
char16_t and char32_t	N2249	4.4	2.9	19.0 (2015)*	Yes	4.4	12.1* 14.0				5.13	Yes	8.4	2015	7.0	A.06.27	8.52
alignas	N2341	4.8	3.0	19.0 (2015)*	Yes	4.8	15.0				5.13	Yes	8.6	2015	7.0
alignof	N2341	4.5	2.9	19.0 (2015)*	Yes	4.8	15.0				5.13	Yes	8.4	2015	7.0
Defaulted and deleted functions	N2346	4.4	3.0	18.0*	Yes	4.1	12.0				5.13	Yes	8.4	2015	7.0	A.06.25
Strongly-typed enum	N2347	4.4	2.9	17.0*	Yes	4.0	13.0				5.13	Yes	8.4	2015	7.0	A.06.25
Atomic operations	N2427	4.4	3.1	17.0*	Yes	Yes	13.0				5.14	Yes	8.4	2015
nullptr	N2431	4.6	2.9	16.0*	Yes	4.2	12.1				5.13	Yes	8.4	2015	7.0	A.06.27	8.52
Explicit conversion operators	N2437	4.5	3.0	18.0*	Yes	4.4	13.0				5.13	Yes	8.4	2015	7.0	A.06.27
ref-qualifiers	N2439	4.8.1	2.9	19.0 (2015)*	Yes	4.7	14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Unicode string literals	N2442	4.4	3.0	19.0 (2015)*	Yes	4.7	11.0*				5.7	Yes	8.4	2015	7.0	A.06.28	8.52
Raw string literals	N2442	4.5	Yes	18.0*	Yes	4.7	14.0				5.13	Yes	8.4	2015	7.0	A.06.28	8.52
Inline namespaces	N2535	4.4	2.9	19.0 (2015)*	Yes	4.5	14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Inheriting constructors	N2540	4.8	3.3	19.0 (2015)*	Yes	4.8	15.0				5.13	Yes	8.4	2015	7.0
Trailing function return types	N2541	4.4	2.9	16.0*	Yes	4.1	12.0				5.13	Yes	8.4	2015	7.0	A.06.27
Unrestricted unions	N2544	4.6	3.0	19.0 (2015)*	Yes	4.6	14.0*				5.13	Yes	8.4	2015	7.0	A.06.28
Variadic templates	N2242 N2555	4.3 (N2242) 4.4	2.9	18.0*	Yes	4.3 (N2242) 4.3	12.1				5.13	Yes	8.4	2015	7.0	A.06.27
Expression SFINAE	N2634	4.4	2.9	19.14*	Yes	4.2	12.1					Yes	8.4	2015	7.0
Local and unnamed types as template parameters	N2657	4.5	2.9	16.0*	Yes	4.2	12.0				5.13	Yes	8.4	2015	7.0	A.06.27
Thread-local storage	N2659	4.4 (partial) 4.8	3.3*	16.0* (partial) 19.0 (2015)*	Yes	4.8	11.1 (partial) 15.0*				5.9 (partial)	Yes	8.4	2015			8.52 (partial)
Dynamic initialization and destruction with concurrency (magic statics)	N2660	4.3	2.9	19.0 (2015)*	Yes	Yes	11.1*				5.13	Yes	8.4	2015		A.06.25
Garbage Collection and Reachability-Based Leak Detection	N2670
Initializer lists	N2672	4.4	3.1	18.0*	Yes	4.5	13.0 (partial) 14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Non-static data member initializers	N2756	4.7	3.0	18.0*	Yes	4.6	14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Attributes	N2761	4.8	3.3	19.0 (2015)*	Yes	4.2	12.1				5.13	Yes	8.4	2015	7.0	A.06.27
Forward enum declarations	N2764	4.6	3.1	17.0*	Yes	4.5	11.1 (partial) 14.0				5.13	Yes	8.4	2015	7.0
User-defined literals	N2765	4.7	3.1	19.0 (2015)*	Yes	4.8	15.0				5.14	Yes	8.4	2015	7.0
Lambda expressions	N2550 N2658 N2927	4.5	3.1	16.0* (N2658) 17.0*	Yes	4.1	12.0				5.13	Yes	8.4	2015	7.0 - claims N2927	A.06.25
Range-for loop	N2930	4.6	3.0	17.0*	Yes	4.5	13.0				5.13	Yes	8.4	2015	7.0	A.06.28
noexcept	N3050	4.6	3.0	19.0 (2015)*	Yes	4.5	14.0				5.13	Yes	8.4	2015	7.0	A.06.28
Rvalue references	N2118 N2844 CWG1138 N3053	4.3 (N2118) 4.5 (CWG1138) 4.6	Yes	16.0* (N2844) 17.0* (CWG1138) 19.0 (2015)*	Yes	4.5	11.1 (N2118) 12.0 (N2844) 14.0				5.13	Yes	8.4	2015	7.0 - lists N2118	A.06.25
override and final	N2928 N3206 N3272	4.7	2.9	14.0* (partial) 17.0*	Yes	4.8	12.0 (N2928) 14.0				5.13	Yes	8.4	2015	7.0
decltype	N2343 N3276	4.3 (N2343) 4.8.1	2.9	16.0*	Yes	4.2 (N2343) 4.8	11.0 (N2343) 12.0				5.13	Yes	8.4	2015	7.0	A.06.25	8.52 (N2343)
C++11 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XL C++	IBM Open XL C++ for AIX	IBM Open XL C++ for z/OS	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex PGI)*	Nvidia nvcc	HP aCC	Digital Mars C++

C++11 library features

C++11 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*
Type traits	N1836	4.3	3.0	14.0*	Yes		5.13	Yes
Garbage Collection and Reachability-Based Leak Detection (library support)	N2670	6 (no-op)	3.4 (no-op)	19.0 (2015)* (no-op)	Yes (no-op)
Money, Time, and hexfloat I/O manipulators	N2071 N2072	5	3.8	19.0 (2015)*	Yes		5.15
C++11 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang*	IBM Open XL C/C++ for AIX*	Sun/Oracle C++*	Embarcadero C++ Builder*

* - hover over the version number to see notes

References

Individual vendor compatibility checklists (these are more up-to-date than the table above)

• GCC (Updated 2019-09)

• C++11 core language support status (complete as of 4.8.1, except for n2670, which no compiler implements)
• C++14 core language support status (complete as of 5.1)
• C++17 core language support status (complete as of 7.1)
• C++20 core language support status
• C++11 library support status (complete as of 5.1)
• C++14 library support status (complete as of 5.1)
• C++17 library support status
• C++20 library support status
• Technical Specifications support status

• Clang++ (Updated 2019-09)

• C++11 core language support status (complete as of 3.3)
• C++11 library support status (complete as of 2012-07-29)
• C++14 core language support status (complete as of 3.4)
• C++14 library support status (complete as of 3.5)
• C++17 core language support status (complete as of 5.0)
• C++17 library support status
• C++20 core language support status
• C++20 library support status
• Technical Specifications support status
• Core language defect report status

• Apple Clang (Updated 2019-06)

• Xcode toolchain versions on Wikipedia
• Xcode release notes

• Microsoft Visual Studio (updated 2019-08)

• C++17/20 Features and Fixes in Visual Studio 2019
• STL Features and Fixes in VS 2017 15.8
• C++17 Announcing: MSVC Conforms to the C++ Standard (complete as of 15.7)
• C++17 Features And STL Fixes In VS 2017 15.5
• C++17 Features And STL Fixes In VS 2017 15.3
• C++11/C++14/C++17 core language and library status in VS2017.3
• C++11/C++14/C++17 core language support status

• C++11/14/17 core language support status in VS2010, VS2012, VS2013, and VS2015
• VS2013 vs. VS2015 CTP0
• VS2013 vs. VS2015 CTP1
• VS2013 vs. VS2015 CTP3 (includes the roadmap table)
• VS2015 ("VS14") preview
• VS2015 ("VS14") release candidate (C++11 remains incomplete, but C++17 support appears)
• VS2019

• C++11 and C++14 library support status
• C++11/14/17 Features In VS 2015 RTM including core language and standard library (including technical specifications)
• C++14/17 features in VS 2015 Update 2 standard library library is feature complete up to current C++17 with few minor issues (some defect reports, some constexprs, etc)
• C++14/17 Features and STL Fixes in VS “15” Preview 5 including a detailed C++17 status table

• Intel C++ (Updated 2018-11)

• C++11 core language support status (complete as of 15.0)
• C++14 core language support status (functionally complete as of 17.0 - N3664 is an optimization)
• C++17 core language support status (incomplete)
• C++17 features of Intel 19.0 beta
• Intel does not ship an implementation of the C++ standard library, except for

• Parallel STL (an implementation of the C++17 standard library algorithms with support for execution policies)

• Intel's compatibility with versions of libstdc++ from GCC

• EDG (Updated 2019-08)

• C++11 core language support status
• C++14 core language support status
• C++17 core language support status
• C++20 core language support status
• EDG does not ship an implementation of the C++ standard library

• Oracle C++ (updated 2017-07)

• Version number is compiler version, not Oracle Studio version
• C++11 core language support status in 5.13

• Missing C++11 support added in 5.14 (page has a typo, and still says 5.13)

• C++14 features added in 5.14

• Full C++14 support added in 5.15.

• Oracle ships 4 implementations of the C++ standard library:

• libCstd (RogueWave Standard Library version 2), predates C++98
• stlport4 (STLport Standard Library version 4.5.3), predates C++03
• stdcxx4 (Apache Standard Library version 4), predates C++11
• libstdc++ (GCC runtime library, support for C++11 and C++14 depending on release)

• IBM XL C++ (updated 2018-05)

• IBM XL C++ for Linux

• Core language support status: C++11 complete as of 13.1.6, C++14 partial in 16.1.0
• IBM does not ship an implementation of C++ standard library for Linux (uses GNU libstdc++)

• IBM XL C++ for AIX

• Core language support status: C++11 partial in 13.1.3 and 16.1.0 (xlC frontend), complete in 16.1.0 (xlclang frontend)
• IBM ships a version of Dinkumware library for AIX with full support for C++ TR1, including <regex>, but no C++11
• IBM XL C/C++ compilers features

• HP aCC

• HP aC++ A.06.28 release notes (including C++11 core language features)
• HP ships a version of RogueWave STL 2.0 implementation of the C++98 standard library

• Digital Mars C++

• C++11 core language support status

• Embarcadero C++

• Language features compliance status (RAD Studio 10.1 Berlin), including C++11 features supported by legacy and Clang-enhanced compilers (based on Clang 3.3)
• Language features compliance status (RAD Studio 10.3 Rio), including C++11 features supported by legacy compilers and C++11, C++14, and C++17 features supported by the Clang-enhanced compilers (based on Clang 5.0)

• Cray (updated 2018-01)

• [1] For version 8.4, claims all of C++14 is supported except alignas
• Cray C and C++ Reference Manual (8.6) For version 8.6, claims all of C++14 is supported

• Portland Group (PGI) (updated 2019-01)

• Release notes for 2016 claim C++14 support, except "generalized constexpr and constexpr member functions and implicit const, variable templates, clarifying memory allocation (merged allocation)"
• Release notes for 2018
• Reference manual of PGI 19.1
• PGI does not ship an implementation of C++ standard library

• Nvidia Cuda nvcc (updated 2019-03)

• CUDA C Programming Guide (v10.1.105)
• NVCC does not ship an implementation of C++ standard library

• Texas Instruments (updated 2018-05)

• cl430 version v18.1.0 claims C++14 support

• Analog Devices (updated 2018-05)

• CrossCore Embedded Studio 2.8.0 for SHARC claims C++11 support.