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 <ja...@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
