gcc-12 (12.3.0-13) unstable; urgency=medium

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.

[dgit import unpatched gcc-12 12.3.0-13]