[gcc r9-8846] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:e71b6bcd222972c233e2f44d2ea71c565a388e66

commit r9-8846-ge71b6bcd222972c233e2f44d2ea71c565a388e66
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Fri Sep 4 00:18:27 2020 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 38146c36fe4..7b35a7c6950 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20200903
+20200904
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index e2e850f97fd..a257769dc5c 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,23 @@
+2020-09-03  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2020-04-30  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/89510
+	* include/bits/alloc_traits.h (allocator_traits::_S_construct)
+	(allocator_traits::_S_destroy)
+	(allocator_traits<allocator<T>>::construct): Use traits in
+	noexcept-specifiers.
+	* include/bits/allocator.h (allocator<void>::construct)
+	(allocator<void>::destroy): Likewise.
+	* include/ext/malloc_allocator.h (malloc_allocator::construct)
+	(malloc_allocator::destroy): Likewise.
+	* include/ext/new_allocator.h (new_allocator::construct)
+	(new_allocator::destroy): Likewise.
+	* testsuite/20_util/allocator/89510.cc: New test.
+	* testsuite/ext/malloc_allocator/89510.cc: New test.
+	* testsuite/ext/new_allocator/89510.cc: New test.
+
 2020-08-26  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: