2020-04-22 Jonathan Wakely <jwakely@redhat.com>
+ * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define
+ here.
+ * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be
+ defined by <utility>.
+
* include/std/functional (__cpp_lib_concepts): Update macro value to
indicate P1964R2 support.
* include/std/version (__cpp_lib_concepts): Likewise.
get(const std::pair<_Tp1, _Tp2>&& __in) noexcept
{ return __pair_get<_Int>::__const_move_get(std::move(__in)); }
-#if __cplusplus > 201103L
+#if __cplusplus >= 201402L
#define __cpp_lib_tuples_by_type 201304
#define __cpp_lib_exchange_function 201304
-#if __cplusplus > 201703L
-# define __cpp_lib_constexpr_algorithms 201806L
-#endif
-
/// Assign @p __new_val to @p __obj and return its previous value.
template <typename _Tp, typename _Up = _Tp>
_GLIBCXX20_CONSTEXPR
exchange(_Tp& __obj, _Up&& __new_val)
{ return std::__exchange(__obj, std::forward<_Up>(__new_val)); }
-#endif
+#endif // C++14
// Stores a tuple of indices. Used by tuple and pair, and by bind() to
// extract the elements in a tuple.
#include <utility>
-#ifndef __cpp_lib_constexpr_algorithms
-# error "Feature-test macro for constexpr algorithms missing"
-#elif __cpp_lib_constexpr_algorithms < 201806L
-# error "Feature-test macro for constexpr algorithms has wrong value"
-#endif
-
constexpr bool
test()
{