Merge version 12.3.0-12+rpi1 and 12.3.0-13 to produce 12.3.0-13+rpi1

diff --cc debian/changelog
index db56622c4287ec7e2bc2fe7a8bdb8197c4d5bd3f,001a79c2cb7e69c772936629e243d7592e3db261..900ba2edee26488c5b22db1c6a7244c812731e4c
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,12 -1,12 +1,22 @@@
- gcc-12 (12.3.0-12+rpi1) trixie-staging; urgency=medium
++gcc-12 (12.3.0-13+rpi1) trixie-staging; urgency=medium
 +
 +  [changes brought forward from gcc-8 8-20180207-2+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sat, 17 Feb 2018 00:20:23 +0000]
 +  * Don't pass -march=armv7+fp to compiler when building libatomic.
 +
 +  [changes introduced in gcc-8 8.2.0-16+rpi1 by Peter Michael Green]
 +  * Disable testsuite (build seems to hang after testsuite completes).
 +
-  -- Raspbian forward porter <root@raspbian.org>  Fri, 08 Dec 2023 08:56:13 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Wed, 20 Dec 2023 13:45:04 +0000
++
+ gcc-12 (12.3.0-13) unstable; urgency=medium
+ 
+   * Update to git 20231215 from the gcc-12 branch.
+     - Fix PR target/112891 (x86), PR libstdc++/112314.
+   * Build again using GCC 11 to fix the bootstrap on riscv64.
+   * For Ubuntu 24.04 LTS and later, switch _FORTIFY_SOURCE to 3 by default
+     instead of 2 when optimization is enabled.
+ 
+  -- Matthias Klose <doko@debian.org>  Fri, 15 Dec 2023 10:15:51 +0100
  
  gcc-12 (12.3.0-12) unstable; urgency=medium
  

diff --cc debian/rules.patch
Simple merge