From: Jonathan Wakely <jwakely@redhat.com>
Date: Mon, 3 Jun 2019 14:05:46 +0000 (+0100)
Subject: Implement missing piece of P0777R1 for std::make_from_tuple
X-Git-Tag: releases/gcc-9.2.0~281
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a4405e3ba37ce0f0c8c479235ecbd87649f93fa;p=thirdparty%2Fgcc.git

Implement missing piece of P0777R1 for std::make_from_tuple

	* include/std/tuple (make_from_tuple): Use remove_reference_t instead
	of decay_t (P0777R1).

From-SVN: r271871
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 48cc1d87a93d..182660c1ceb1 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/tuple (make_from_tuple): Use remove_reference_t instead
+	of decay_t (P0777R1).
+
 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
 
 	* doc/xml/manual/status_cxx2017.xml: Fix typo in documentation of
diff --git a/libstdc++-v3/include/std/tuple b/libstdc++-v3/include/std/tuple
index 6c7d91b79875..bc0b1add7646 100644
--- a/libstdc++-v3/include/std/tuple
+++ b/libstdc++-v3/include/std/tuple
@@ -1709,7 +1709,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     {
       return __make_from_tuple_impl<_Tp>(
         std::forward<_Tuple>(__t),
-	make_index_sequence<tuple_size_v<decay_t<_Tuple>>>{});
+	make_index_sequence<tuple_size_v<remove_reference_t<_Tuple>>>{});
     }
 #endif // C++17