[gcc r13-10139] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:c5e465e3fff93cf5ee8337e4576fd931c0744f35

commit r13-10139-gc5e465e3fff93cf5ee8337e4576fd931c0744f35
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Tue Mar 17 00:17:14 2026 +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 bc8b33bf2a1b..a7d8c7097835 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20260316
+20260317
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 1967b87f2fb4..d804f37294c5 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,23 @@
+2026-03-16  Tomasz Kamiński  <tkaminsk@redhat.com>
+
+	Backported from master:
+	2026-03-05  Tomasz Kamiński  <tkaminsk@redhat.com>
+
+	PR libstdc++/124124
+	* testsuite/29_atomics/atomic/cons/zero_padding.cc: Limit size of
+	test types to four bytes.
+
+2026-03-16  Tomasz Kamiński  <tkaminsk@redhat.com>
+
+	PR libstdc++/105580
+	* include/std/streambuf (streambuf::gptr, streambuf::egptr)
+	(streambuf::gbump): Surround with pragma disabling -Wnull-dereference.
+	* testsuite/24_iterators/istreambuf_iterator/105580.cc: New test.
+	(cherry picked from commits
+	8758503918a91dacff4dbc7126eced21787fbfc9
+	bfc2b87f8244a13ab00e8e3fe2af1d6d18fcaa36
+	a523d1ecc89dcb7ea205e3de22d00443d4a0d91d)
+
 2026-03-13  Patrick Palka  <ppalka@redhat.com>
 
 	Backported from master: