Compiler support for C++17
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< cpp | compiler support
* - hover over a cell marked with the star * to see additional pop-up notes.
DRnn - the number nn after "DR" denotes target C++ revision the Defect Report is applied to, e.g., DR20 → C++20.
[edit] C++17 core language features
| C++17 feature |
Paper(s) |
GCC |
Clang |
MSVC |
Apple Clang |
EDG eccp |
Intel C++ |
Nvidia HPC C++ (ex PGI)* |
Nvidia nvcc |
Cray |
Embarcadero C++ Builder |
IBM Open XL C++ for AIX |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DR11: New auto rules for direct-list-initialization | N3922 | 5 | 3.8 | 19.0 (2015)* | Yes | 4.10.1 | 17.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| typename in a template template parameter | N4051 | 5 | 3.5 | 19.0 (2015)* | Yes | 4.10.1 | 17.0 | 17.7 | Yes* | 11.0 | 10.3 | 17.1.0 | |
| Removing trigraphs | N4086 | 5 | 3.5 | 16.0* | Yes | 5.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | ||
| Nested namespace definition | N4230 | 6 | 3.6 | 19.0 (Update 3)* | Yes | 4.12 | 17.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| static_assert with no message (FTM)* | N3928 | 6 | 2.5 | 19.10* | Yes | 4.12 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Attributes for namespaces and enumerators (FTM)* (FTM)* | N4266 | 4.9 (partial)* 6 |
3.6 | 19.0 (2015)* | Yes | 4.11 | 17.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
u8 character literals
|
N4267 | 6 | 3.6 | 19.0 (2015)* | Yes | 4.11 | 17.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Allow constant evaluation for all non-type template arguments (FTM)* | N4268 | 6 | 3.6 | 19.12* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Unary fold expressions and empty parameter packs | P0036R0 | 6 | 3.9 | 19.12* | Yes | 4.14 | 19.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Remove deprecated use of the register keyword | P0001R1 | 7 | 3.8 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Remove deprecated operator++(bool) | P0002R1 | 7 | 3.8 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Make exception specifications part of the type system (FTM)* | P0012R1 | 7 | 4 | 19.12* | Yes | 4.14 | 19.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| __has_include in preprocessor conditionals | P0061R1 | 5 | Yes | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| DR11: New specification for inheriting constructors (DR1941 et al) (FTM)* | P0136R1 | 7 | 3.9 | 19.14 (partial)* | Yes | 6.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | ||
| Aggregate classes with base classes (FTM)* | P0017R1 | 7 | 3.9 | 19.14* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Fold Expressions (FTM)* | N4295 | 6 | 3.6 | 19.12* | Yes | 4.14 | 19.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Lambda capture of *this (FTM)* | P0018R3 | 7 | 3.9 | 19.11* | Yes | 4.14 | 19.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Direct-list-initialization of enumerations | P0138R2 | 7 | 3.9 | 19.11* | Yes | 4.14 | 18.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
constexpr lambda expressions (FTM)*
|
P0170R1 | 7 | 5 | 19.11* | Yes | 4.14 | 19.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Differing begin and end types in range-based for (FTM)* | P0184R0 | 6 | 3.9 | 19.10* | Yes | 4.12 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
[[fallthrough]] attribute
|
P0188R1 | 7 | 3.9 | 19.10* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
[[nodiscard]] attribute
|
P0189R1 | 7 | 3.9 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
[[maybe_unused]] attribute
|
P0212R1 | 7 | 3.9 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Hexadecimal floating-point literals (FTM)* | P0245R1 | 3.0 | Yes | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Using attribute namespaces without repetition | P0028R4 | 7 | 3.9 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Dynamic memory allocation for over-aligned data (FTM)* | P0035R4 | 7 | 4 | 19.12* | 10.0.0* | 4.14 | 19.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Non-type template parameters with auto type (FTM)* | P0127R2 | 7 | 4 | 19.14* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Guaranteed copy elision (FTM)* | P0135R1 | 7 | 4 | 19.13* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Replacement of class objects containing reference members | P0137R1 | 7 | 6 | 19.14* | Yes | 5.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | ||
| Stricter expression evaluation order | P0145R3 | 7 | 4 | 19.14* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Structured Bindings (FTM)* | P0217R3 | 7 | 4 | 19.11* | Yes | 4.14 | 19.0 | 18.1 | 11.0* | 11.0 | 10.3 | 17.1.0 | |
| Ignore unknown attributes | P0283R2 | Yes | 3.9 | 19.11* | Yes | 4.13 | 18.0 | 17.7 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| constexpr if statements (FTM)* | P0292R2 | 7 | 3.9 | 19.11* | Yes | 4.14 | 19.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Init-statements for if and switch | P0305R1 | 7 | 3.9 | 19.11* | Yes | 4.14 | 18.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Inline variables (FTM)* | P0386R2 | 7 | 3.9 | 19.12* | Yes | 4.14 | 19.0 | 18.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Removing dynamic exception specifications | P0003R5 | 7 | 4 | 19.10* | Yes | 4.14 | 19.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Pack expansions in using-declarations (FTM)* | P0195R2 | 7 | 4 | 19.14* | Yes | 5.0 | 19.0 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| DR98: Matching of template template-arguments excludes compatible templates (FTM)* | P0522R0 | 7 | 4 | 19.12* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| Class template argument deduction (FTM)* | P0091R3 | 7 | 5 | 19.14* | Yes | 5.0 | 19.0.1 | 19.1 | 11.0 | 11.0 | 10.3 | 17.1.0 | |
| C++17 feature |
Paper(s) |
GCC |
Clang |
MSVC |
Apple Clang |
EDG eccp |
Intel C++ |
Nvidia HPC C++ (ex PGI)* |
Nvidia nvcc |
Cray |
Embarcadero C++ Builder |
IBM Open XL C++ for AIX |
[edit] 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 |
Embarcadero C++ Builder* |
|
|---|---|---|---|---|---|---|---|---|---|
| std::void_t (FTM)* | N3911 | 6.1 | 3.6 | 19.0 (2015)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::uncaught_exceptions() (FTM)* | N4259 | 6.1 | 3.7 | 19.0 (2015)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::size(), std::empty() and std::data() (FTM)* | N4280 | 6 | 3.6 | 19.0 (2015)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::allocator_traits::is_always_equal, noexcept cleanups (FTM)* | N4258 | 6.1 | 3.7 | 19.0 (2015)* | 17.1.0 | N/A | |||
| std::invoke (FTM)* | N4169 | 6.1 | 3.7 | 19.0 (2015)* | Yes | 17.1.0 | N/A | ||
| std::map::try_emplace, std::map::insert_or_assign (FTM)* | N4279 | 6.1 | 3.7 | 19.0 (2015)* | Yes | 17.1.0 | N/A | ||
| std::unordered_map::try_emplace, std::unordered_map::insert_or_assign (FTM)* | N4279 | 6.1 | 3.7 | 19.0 (2015)* | Yes | 17.1.0 | N/A | ||
| Improving std::pair and std::tuple | N4387 | 6.1 | 4 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::bool_constant (FTM)* | N4389 | 6.1 | 3.7 | 19.0 (2015)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::shared_mutex (untimed) (FTM)* | N4508 | 6 | 3.7 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | 10.3 | |
| Minimal incomplete type support for std::forward_list, std::list, and std::vector (FTM)* | N4510 | 3.0 | 3.6 | 18.0* | Yes | 17.1.0 | N/A | ||
| Type traits variable templates (FTM)* | P0006R0 | 7.1 | 3.8 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | 10.3 | |
| Logical operator type traits (FTM)* | P0013R1 | 6.1 | 3.8 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | 10.3 | |
| std::as_const (FTM)* | P0007R1 | 7.1 | 3.8 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | ||
| Rounding functions for std::chrono::duration and std::chrono::time_point (FTM)* | P0092R1 | 7.1 | 3.8 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | ||
| Transparent std::owner_less (std::owner_less<void>) (FTM)* | P0074R0 | 7.1 | 3.8 | 19.0 (Update 2)* | Yes | 17.1.0 | N/A | ||
| std::not_fn (FTM)* | P0005R4 P0358R1 |
7.1 | 3.9 | 19.12* | Yes | 17.1.0 | N/A | 10.3 | |
| Parallel algorithms and execution policies (FTM)* (FTM)* | P0024R2 | 9* | 17 (partial)* |
19.14* | 18.0* | ||||
| std::clamp() (FTM)* | P0025R1 | 7 | 3.9 | 19.0 (Update 3)* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| (nothrow-)swappable traits (FTM)* | P0185R1 | 7.1* | 3.9 | 19.0 (Update 3)* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| Polymorphic memory resources (FTM)* | P0220R1 | 9.1 | 16 | 19.13* | 15.0.0* | 17.1.1 | N/A | 10.3 | |
| std::apply (FTM)* | P0220R1 | 7.1 | 16 | 19.13* | Yes | 17.1.0 | N/A | ||
| Searchers (FTM)* | P0220R1 | 7.1 | 16 | 19.13* | Yes | 17.1.0 | N/A | ||
| std::sample (FTM)* | P0220R1 | 7.1 | 16 | 19.13* | Yes | 17.1.0 | N/A | ||
| Mathematical special functions (FTM)* | P0226R1 | 7 | 19.14* | 17.1.1 | N/A | 10.3 | |||
| constexpr std::addressof (FTM)* | LWG2296 | 7.1 | Yes | 19.0 (Update 3)* | 17.1.0 | N/A | |||
| constexpr for std::reverse_iterator, std::move_iterator, std::array and range access (FTM)* | P0031R0 | 7.1 | 4 | 19.11* | Yes | 17.1.0 | N/A | ||
| constexpr std::atomic<T>::is_always_lock_free (FTM)* | P0152R1 | 7.1 | 3.9 | 19.11* | Yes | 17.1.0 | N/A | ||
| std::enable_shared_from_this::weak_from_this (FTM)* | P0033R1 | 7.1 | 3.9 | 19.12* | Yes | 17.1.0 | N/A | ||
| 3-argument overload of std::hypot (FTM)* | P0030R1 | 7.1 | 3.9 | 19.14* | Yes | 17.1.0 | N/A | ||
| std::byte (FTM)* | P0298R3 | 7 | 5 | 19.11* | Yes | 17.1.1 | N/A | 10.3 | |
| std::string_view (FTM)* | N3921 P0220R1 P0254R2 P0403R1 |
7.1 | 4 | 19.10* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| std::any (FTM)* | P0220R1 P0032R3 |
7.1 | 4 | 19.10* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| std::optional (FTM)* | P0220R1 | 7.1 | 4 | 19.10* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| Major portion of C11 standard library | P0063R3 | 9.1 | 7 | 19.0 (2015)* (partial)* |
10.0.0* | 17.1.1 | N/A | ||
| Splicing Maps and Sets (FTM)* | P0083R3 | 7 | 8 | 19.12* | 10.0.0* | 17.1.1 | N/A | ||
| return type of emplace* functions of some containers changed from void to reference | P0084R2 | 7.1 | 4.0 | 19.11* | Yes | 17.1.0 | N/A | ||
| std::variant (FTM)* | P0088R3 | 7.1 | 4 | 19.10* | 10.0.0* | 17.1.0 | N/A | 10.3 | |
| std::make_from_tuple() (FTM)* | P0209R2 | 7.1 | 3.9 | 19.10* | Yes | 17.1.0 | N/A | 10.3 | |
| std::has_unique_object_representations (FTM)* | P0258R2 | 7.1 | 6 | 19.11* | Yes | 17.1.1 | N/A | 10.3 | |
| std::gcd() and std::lcm() (FTM)* | P0295R0 | 7 | 4 | 19.11* | Yes | 17.1.0 | N/A | 10.3 | |
| CWG issue 1776: Replacement of class objects containing reference members (std::launder) (FTM)* | P0137R1 | 7.1 | 6 | 19.14* | Yes | 17.1.0 | N/A | ||
| Extending memory management tools (FTM)* | P0040R3 | 7.1 | 4 | 19.11* | 17.1.0 | N/A | |||
| shared_ptr::weak_type (FTM)* | P0163R0 | 7.1 | 3.9 | 19.10* | Yes | 17.1.0 | N/A | ||
| Elementary string conversions: std::to_chars / std::from_chars (FTM)* | P0067R5 | 8* 11 |
7* 14* 20* |
19.14** 19.24* |
10.0.0** | 17.1.1* | N/A | 10.3* | |
| std::shared_ptr and std::weak_ptr with array support | P0414R2 | 7 | 11 | 19.12* | 12.0.0* | 17.1.1 | N/A | 10.3 | |
| Constexpr for all the member functions of std::chrono::duration and std::chrono::time_point (FTM)* | P0505R0 | 7.1 | 4 | 19.11* | Yes | 17.1.1 | N/A | ||
| std::shared_ptr<T[]> (FTM)* | P0497R0 | 7.1 | 11 | 19.12* | 17.1.1 | N/A | |||
| constexpr std::char_traits (FTM)* | P0426R1 | 8.1 | 4 | 19.14* | Yes | 17.1.1 | N/A | ||
| File system library (std::filesystem) (FTM)* | P0218R1 P0219R1 |
8 | 7 | 19.14* | 11.0.0* | 17.1.1 | N/A | 10.3 | |
| Hardware interference size (FTM)* | P0154R1 | 12.1 | 15 (partial)* 19 |
19.11* | N/A | 10.3 | |||
| std::scoped_lock (FTM)* | P0156R2 | 7 | 5 | 19.11* | Yes | 17.1.1 | N/A | 10.3 | |
| std::is_aggregate (FTM)* | LWG2911 | 7 | 5 | 19.15* | Yes | 17.1.1 | N/A | 10.3 | |
| std::is_invocable, std::invoke_result (FTM)* | P0604R0 | 7.1 | Yes | 19.11* | Yes | 17.1.1 | N/A | ||
| DR17: std::hash<std::filesystem::path> | LWG3657 | 11.4 | 17 | 19.32* | N/A | ||||
| C++17 feature |
Paper(s) |
GCC libstdc++ |
Clang libc++ |
MSVC STL |
Apple Clang* |
IBM Open XL C/C++ for AIX* |
Intel Parallel STL |
Embarcadero C++ Builder* |
[edit] Notes
- As of 2020-11-20, the latest release of Oracle Developer Studio is 12.6. Its documentation does not mention C++17.
- Cray compiler may have support for some features earlier than 11.0. That version is when it became a derivative of Clang, gaining all of the attendant language feature support of the base compiler. See Cray/HPE document S-2179.
