[gcc r15-11314] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:2a84d041dbcf216420a2160e23515cba6ffb97e4

commit r15-11314-g2a84d041dbcf216420a2160e23515cba6ffb97e4
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Wed Jun 24 00:20:27 2026 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 921b7eeb5f0d..c4827740d110 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20260623
+20260624
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ba3ed1d4d0d4..469cfbf89219 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,21 @@
+2026-06-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2026-06-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/chrono.h (std::chrono_literals): Fix typo in
+	comment.
+
+2026-06-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2026-06-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	* doc/xml/manual/debug_mode.xml: Remove 404 link to stlport
+	website and modernise some text about debug modes in other
+	implementations.
+	* doc/html/manual/debug_mode_design.html: Regenerate.
+
 2026-06-12  Release Manager
 
 	* GCC 15.3.0 released.