From abe48908209b736cf15da3df0defc2eba8fd93d9 Mon Sep 17 00:00:00 2001
From: Mishmish Dev <mishmish@mishmish.dev>
Date: Sun, 4 Oct 2026 17:06:50 +0100
Subject: [PATCH] Limit sanitizer CI to recent Clang and GCC configurations

---
 .github/workflows/linux.yml | 33 +++++----------------------------
 1 file changed, 5 insertions(+), 28 deletions(-)

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 9a403d87..550224bf 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -18,13 +18,9 @@ jobs:
       # Run tests in a non-UTC timezone. glibc localtime/strftime honor TZ, so
       # there is no need for timedatectl, which fails without systemd-timedated.
       TZ: Europe/Kyiv
-      # LLVM 11's ASan signal-stack setup is incompatible with newer glibc.
-      ASAN_OPTIONS: ${{ matrix.cxx == 'clang++-11' && 'use_sigaltstack=false' || '' }}
-      GTEST_DEATH_TEST_USE_FORK: ${{ startsWith(matrix.cxx, 'g++') && '1' || '0' }}
-      # GCC 4.9 predates -fno-sanitize-recover; check its test log below.
+      GTEST_DEATH_TEST_USE_FORK: ${{ matrix.sanitizers && startsWith(matrix.cxx, 'g++') && '1' || '0' }}
       SANITIZER_FLAGS: >-
-        ${{ matrix.sanitizers && '-fsanitize=address,undefined -fno-omit-frame-pointer' || '' }}
-        ${{ matrix.sanitizers && matrix.cxx != 'g++-4.9' && '-fno-sanitize-recover=all' || '' }}
+        ${{ matrix.sanitizers && '-fsanitize=address,undefined -fno-omit-frame-pointer -fno-sanitize-recover=all' || '' }}
     strategy:
       matrix:
         cxx: [g++-4.9, g++-11, clang++-3.6, clang++-11]
@@ -32,40 +28,31 @@ jobs:
         std: [11]
         shared: [""]
         include:
-          - cxx: g++-4.9
-            sanitizers: true
           - cxx: g++-11
             build_type: Debug
             std: 14
-            sanitizers: true
             install: sudo apt install g++-11
           - cxx: g++-11
             build_type: Debug
             std: 17
-            sanitizers: true
           - cxx: g++-11
             build_type: Debug
             std: 20
-            sanitizers: true
             install: sudo apt install g++-11
-          - cxx: g++-11
-            sanitizers: true
           - cxx: g++-13
             build_type: Release
             std: 23
-            sanitizers: true
             os: ubuntu-24.04
             shared: -DBUILD_SHARED_LIBS=ON
           - cxx: g++-14
+            sanitizers: true
             build_type: Release
             std: 23
-            sanitizers: true
             os: ubuntu-24.04
             gen: Ninja
           - cxx: g++-16
             build_type: Debug
             std: 26
-            sanitizers: true
             os: ubuntu-24.04
             cxxflags: -freflection
             install: sudo apt install g++-16
@@ -74,31 +61,27 @@ jobs:
             build_type: Debug
             std: 17
             cxxflags: -stdlib=libc++
-            sanitizers: true
             install: sudo apt install clang-11 libc++-11-dev libc++abi-11-dev
           - cxx: clang++-11
             install: sudo apt install clang-11
-            sanitizers: true
           - cxx: clang++-11
             build_type: Debug
             fuzz: -DFMT_FUZZ=ON -DFMT_FUZZ_LINKMAIN=ON
             std: 17
-            sanitizers: true
             install: sudo apt install clang-11
           - cxx: clang++-14
             build_type: Debug
             std: 20
-            sanitizers: true
           - cxx: clang++-14
             build_type: Debug
             std: 20
             cxxflags: -stdlib=libc++
             install: sudo apt install libc++-14-dev libc++abi-14-dev
           - cxx: clang++-20
+            sanitizers: true
             build_type: Debug
             std: 20
             cxxflags: -stdlib=libc++
-            sanitizers: true
             install: sudo apt install clang-20 libc++-20-dev libc++abi-20-dev
             gen: Ninja
 
@@ -243,12 +226,6 @@ jobs:
 
     - name: Test
       working-directory: ${{runner.workspace}}/build
-      run: |
-        if [ "${{matrix.cxx}}" = "g++-4.9" ]; then
-          ctest -C ${{matrix.build_type}} -V --output-log ctest.log
-          if grep -F 'runtime error:' ctest.log; then exit 1; fi
-        else
-          ctest -C ${{matrix.build_type}}
-        fi
+      run: ctest -C ${{matrix.build_type}}
       env:
         CTEST_OUTPUT_ON_FAILURE: True