Relocate std::endian from <type_traits> to <bit>

This change to an early C++2a feature was just approved (P1612R1).

	* include/std/bit (endian): Move definition here as per P1612R1.
	* include/std/type_traits (endian): Remove definition from here.
	* testsuite/20_util/endian/1.cc: Rename to ...
	* testsuite/26_numerics/endian/1.cc: ... here. Adjust header.

From-SVN: r273816

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index a92e7a7783b17a91fd0a43c3afbef7d41e5adc71..21f352a10b6025b2c1f9da55791bc59ce08c8594 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/bit (endian): Move definition here as per P1612R1.
+       * include/std/type_traits (endian): Remove definition from here.
+       * testsuite/20_util/endian/1.cc: Rename to ...
+       * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
+
 2019-07-25  Martin Liska  <mliska@suse.cz>
            Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
 

diff --git a/libstdc++-v3/include/std/bit b/libstdc++-v3/include/std/bit
index f17d2f1bd59cf72da8d9985fce99c0dd23d7d2c1..d57433c093ae0639f643fd6d9acb8642f90333c0 100644 (file)
--- a/libstdc++-v3/include/std/bit
+++ b/libstdc++-v3/include/std/bit
@@ -315,6 +315,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     log2p1(_Tp __x) noexcept
     { return std::__log2p1(__x); }
 
+  /// Byte order
+  enum class endian
+  {
+    little = __ORDER_LITTLE_ENDIAN__,
+    big    = __ORDER_BIG_ENDIAN__,
+    native = __BYTE_ORDER__
+  };
 #endif // C++2a
 
 _GLIBCXX_END_NAMESPACE_VERSION

diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
index d8ed1ce120da8f12b33aad15150163932109e84d..9428dadc9d7d17d0df4cdca851bd2d3a7234dd63 100644 (file)
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -3226,14 +3226,6 @@ template <typename _From, typename _To>
 #endif // C++17
 
 #if __cplusplus > 201703L
-  /// Byte order
-  enum class endian
-  {
-    little = __ORDER_LITTLE_ENDIAN__,
-    big    = __ORDER_BIG_ENDIAN__,
-    native = __BYTE_ORDER__
-  };
-
   /// Remove references and cv-qualifiers.
   template<typename _Tp>
     struct remove_cvref

diff --git a/libstdc++-v3/testsuite/20_util/endian/1.cc b/libstdc++-v3/testsuite/20_util/endian/1.cc
deleted file mode 100644 (file)
index 4faaba8..0000000
--- a/libstdc++-v3/testsuite/20_util/endian/1.cc
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (C) 2017-2019 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING3.  If not see
-// <http://www.gnu.org/licenses/>.
-
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
-
-#include <type_traits>
-
-static_assert( std::is_enum_v<std::endian> );
-static_assert( std::endian::little != std::endian::big );
-static_assert( std::endian::native == std::endian::big
-               || std::endian::native == std::endian::little );
-
-namespace gnu {
-  int little, big, native;
-}
-
-using namespace std;
-using namespace gnu;
-
-// std::endian is a scoped-enum so these should refer to gnu::native etc.
-int test = little + big + native;

diff --git a/libstdc++-v3/testsuite/26_numerics/endian/1.cc b/libstdc++-v3/testsuite/26_numerics/endian/1.cc
new file mode 100644 (file)
index 0000000..896a14c
--- /dev/null
+++ b/libstdc++-v3/testsuite/26_numerics/endian/1.cc
@@ -0,0 +1,36 @@
+// Copyright (C) 2017-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do compile { target c++2a } }
+
+#include <bit>
+
+static_assert( std::is_enum_v<std::endian> );
+static_assert( std::endian::little != std::endian::big );
+static_assert( std::endian::native == std::endian::big
+               || std::endian::native == std::endian::little );
+
+namespace gnu {
+  int little, big, native;
+}
+
+using namespace std;
+using namespace gnu;
+
+// std::endian is a scoped-enum so these should refer to gnu::native etc.
+int test = little + big + native;