From b9297dcdfc35549b22c3a0e38cfe522bd19d5cf7 Mon Sep 17 00:00:00 2001
From: Michael Cho <michael@michaelcho.dev>
Date: Sat, 30 Aug 2025 12:03:37 -0400
Subject: [PATCH] Migrate Linux CI to GCC 12

---
 Dockerfile             | 1 +
 Library/Homebrew/os.rb | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index b73eb6eae6..c096a0edde 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -45,6 +45,7 @@ RUN apt-get update \
   tzdata \
   jq \
   && if [ "$(. /etc/lsb-release; echo "${DISTRIB_RELEASE}" | cut -d. -f1)" -ge 22 ]; then apt-get install -y --no-install-recommends skopeo; fi \
+  && if [ "$(. /etc/lsb-release; echo "${DISTRIB_RELEASE}" | cut -d. -f1)" -eq 22 ]; then apt-get install -y --no-install-recommends g++-12; fi \
   && mkdir -p /etc/apt/keyrings \
   && chmod 0755 /etc /etc/apt /etc/apt/keyrings \
   && curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | tee /etc/apt/keyrings/githubcli-archive-keyring.gpg >/dev/null \
diff --git a/Library/Homebrew/os.rb b/Library/Homebrew/os.rb
index ffa463e864..2e0144673e 100644
--- a/Library/Homebrew/os.rb
+++ b/Library/Homebrew/os.rb
@@ -49,9 +49,9 @@ module OS
   LINUX_CI_OS_VERSION = "Ubuntu 22.04"
   LINUX_GLIBC_CI_VERSION = "2.35"
   LINUX_GLIBC_NEXT_CI_VERSION = "2.39"
-  LINUX_GCC_CI_VERSION = "11.0"
+  LINUX_GCC_CI_VERSION = "12" # https://packages.ubuntu.com/jammy/gcc-12
   LINUX_LIBSTDCXX_CI_VERSION = "6.0.30" # https://packages.ubuntu.com/jammy/libstdc++6
-  LINUX_PREFERRED_GCC_COMPILER_FORMULA = "gcc@11" # https://packages.ubuntu.com/jammy/gcc
+  LINUX_PREFERRED_GCC_COMPILER_FORMULA = T.let("gcc@#{LINUX_GCC_CI_VERSION}".freeze, String)
   LINUX_PREFERRED_GCC_RUNTIME_FORMULA = "gcc"
 
   if OS.mac?