diff mbox series

Define __cpp_lib_is_constant_evaluated

Message ID 20190111155138.GO30353@tucnak
State New
Headers show
Series Define __cpp_lib_is_constant_evaluated | expand

Commit Message

Jakub Jelinek Jan. 11, 2019, 3:51 p.m. UTC 
Hi!

Seems __cpp_lib_is_constant_evaluated should be defined to 201811L
if std::is_constant_evaluated() is implemented.

Ok for trunk?

2019-01-11  Jakub Jelinek  <jakub@redhat.com>

	* include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
	* include/std/version (__cpp_lib_is_constant_evaluated): Define.


	Jakub

Comments

Jonathan Wakely Jan. 11, 2019, 3:56 p.m. UTC | #1 
On 11/01/19 16:51 +0100, Jakub Jelinek wrote:
>Hi!
>
>Seems __cpp_lib_is_constant_evaluated should be defined to 201811L
>if std::is_constant_evaluated() is implemented.
>
>Ok for trunk?

OK, thanks.

>2019-01-11  Jakub Jelinek  <jakub@redhat.com>
>
>	* include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
>	* include/std/version (__cpp_lib_is_constant_evaluated): Define.
>
>--- libstdc++-v3/include/std/type_traits.jj	2019-01-01 12:45:50.842546655 +0100
>+++ libstdc++-v3/include/std/type_traits	2019-01-11 16:44:39.546916488 +0100
>@@ -3030,6 +3030,9 @@ template <typename _From, typename _To>
>     using unwrap_ref_decay_t = typename unwrap_ref_decay<_Tp>::type;
>
> #ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
>+
>+#define __cpp_lib_is_constant_evaluated 201811L 	
>+
>   constexpr inline bool
>   is_constant_evaluated() noexcept
>   { return __builtin_is_constant_evaluated(); }
>--- libstdc++-v3/include/std/version.jj	2019-01-10 16:42:18.081062695 +0100
>+++ libstdc++-v3/include/std/version	2019-01-11 16:48:35.944119391 +0100
>@@ -142,6 +142,9 @@
>
> #if __cplusplus > 201703L
> // c++2a
>+#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
>+# define __cpp_lib_is_constant_evaluated 201811L
>+#endif
> #define __cpp_lib_list_remove_return_type 201806L
> #endif // C++2a
> #endif // C++17
>
>	Jakub
diff mbox series

Patch

--- libstdc++-v3/include/std/type_traits.jj	2019-01-01 12:45:50.842546655 +0100
+++ libstdc++-v3/include/std/type_traits	2019-01-11 16:44:39.546916488 +0100
@@ -3030,6 +3030,9 @@  template <typename _From, typename _To>
     using unwrap_ref_decay_t = typename unwrap_ref_decay<_Tp>::type;
 
 #ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
+
+#define __cpp_lib_is_constant_evaluated 201811L 	
+
   constexpr inline bool
   is_constant_evaluated() noexcept
   { return __builtin_is_constant_evaluated(); }
--- libstdc++-v3/include/std/version.jj	2019-01-10 16:42:18.081062695 +0100
+++ libstdc++-v3/include/std/version	2019-01-11 16:48:35.944119391 +0100
@@ -142,6 +142,9 @@ 
 
 #if __cplusplus > 201703L
 // c++2a
+#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
+# define __cpp_lib_is_constant_evaluated 201811L
+#endif
 #define __cpp_lib_list_remove_return_type 201806L
 #endif // C++2a
 #endif // C++17