[gcc r9-8933] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:c189842fef7f5fa87edcba271af4cb6796a03492

commit r9-8933-gc189842fef7f5fa87edcba271af4cb6796a03492
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Wed Sep 23 00:18:20 2020 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index ca3ee10cb82..1a983d8f051 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20200922
+20200923
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index c1823865056..3c40bbf0764 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,38 @@
+2020-09-22  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2020-09-22  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/97167
+	* src/c++17/fs_path.cc (path::_Parser::root_path()): Check
+	for empty string before inspecting the first character.
+	* testsuite/27_io/filesystem/path/append/source.cc: Append
+	empty string_view to path.
+
+2020-09-22  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2020-09-22  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/96803
+	* include/std/tuple
+	(_Tuple_impl(allocator_arg_t, Alloc, const _Tuple_impl<U...>&)):
+	Use correct value category in __use_alloc call.
+	* testsuite/20_util/tuple/cons/96803.cc: Check with constructors
+	that require correct value category to be used.
+
+2020-09-22  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2020-08-26  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/96803
+	* include/std/tuple
+	(_Tuple_impl(allocator_arg_t, Alloc, const _Tuple_impl<U...>&)):
+	Replace parameter pack with a type parameter and a pack and pass
+	the first type to __use_alloc.
+	* testsuite/20_util/tuple/cons/96803.cc: New test.
+
 2020-09-21  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: