[gcc r9-9476] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:6f8ed70a551067971af93bfc514b3e4bf4e63154

commit r9-9476-g6f8ed70a551067971af93bfc514b3e4bf4e63154
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Fri Apr 30 00:19:57 2021 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index d04d9806e5b..e485971526c 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20210429
+20210430
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index adab265cf77..ea9d26142c0 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,24 @@
+2021-04-29  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/100259
+	* include/experimental/internet (net::ip::make_error_code)
+	(net::ip::make_error_condition, net::ip::make_network_v4)
+	(net::ip::operator==(const udp&, const udp&)): Add 'inline'.
+
+2021-04-29  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/basic_string.h (__cpp_lib_constexpr_string): Define.
+	* include/std/version (__cpp_lib_constexpr_string): Define.
+	* testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
+	Check for __cpp_lib_constexpr_string.
+	* testsuite/21_strings/char_traits/requirements/version.cc: New test.
+
 2021-04-21  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: