From 0409b5d0eb94719963f65e3cf12c692fa03a2a64 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?=
 <daniel.marjamaki@cppchecksolutions.com>
Date: Tue, 16 Jun 2026 13:45:48 +0200
Subject: [PATCH 1/2] Fix #14850 (Compilation fails on oraclelinux:8 (g++ 8.5.0
 released in 2021))

---
 .github/workflows/CI-unixish-docker.yml | 17 ++++++++++++++++-
 lib/checks.h                            |  2 +-
 lib/settings.cpp                        |  4 ++--
 lib/settings.h                          | 16 ++++++++++++++--
 4 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/CI-unixish-docker.yml b/.github/workflows/CI-unixish-docker.yml
index a38feb452f0..9f594b8692b 100644
--- a/.github/workflows/CI-unixish-docker.yml
+++ b/.github/workflows/CI-unixish-docker.yml
@@ -30,6 +30,9 @@ jobs:
           - image: "alpine:3.23"
             with_gui: false  # it appears FindQt6.cmake is not provided by any package
             full_build: false  # FIXME: test-signalhandler.cpp fails to build since feenableexcept() is missing
+          - image: "oraclelinux:8"
+            with_gui: false  # no qt6 are installed, missing GUI in old distros is OK
+            full_build: true
       fail-fast: false # Prefer quick result
 
     runs-on: ubuntu-22.04
@@ -63,6 +66,12 @@ jobs:
         run: |
           apk add cmake make g++ pcre-dev
 
+      - name: Install missing software on Oracle Linux
+        if: contains(matrix.image, 'oraclelinux')
+        run: |
+          yum install -y git python3 which epel-release
+          yum install -y cmake3 gcc-c++ make pcre-devel
+
       # needs to be called after the package installation since
       # - it doesn't call "apt-get update"
       - name: ccache
@@ -87,7 +96,7 @@ jobs:
 
     strategy:
       matrix:
-        image: ["ubuntu:24.04", "ubuntu:25.10", "alpine:3.23"]
+        image: ["ubuntu:24.04", "ubuntu:25.10", "alpine:3.23", "oraclelinux:8"]
       fail-fast: false # Prefer quick result
 
     runs-on: ubuntu-22.04
@@ -111,6 +120,12 @@ jobs:
         run: |
           apk add make g++ pcre-dev bash python3 libxml2-utils
 
+      - name: Install missing software on Oracle Linux
+        if: contains(matrix.image, 'oraclelinux')
+        run: |
+          yum install -y git python3 which epel-release
+          yum install -y cmake3 gcc-c++ make pcre-devel
+
       # needs to be called after the package installation since
       # - it doesn't call "apt-get update"
       - name: ccache
diff --git a/lib/checks.h b/lib/checks.h
index ec4a78c2008..9c053b81405 100644
--- a/lib/checks.h
+++ b/lib/checks.h
@@ -29,6 +29,6 @@ namespace CheckInstances
 {
     /** List of registered check classes. This is used by Cppcheck to run checks and generate documentation */
     CPPCHECKLIB const std::list<Check *>& get();
-};
+}
 
 #endif // checksH
diff --git a/lib/settings.cpp b/lib/settings.cpp
index 95d4c4e953b..c0539bbeaba 100644
--- a/lib/settings.cpp
+++ b/lib/settings.cpp
@@ -79,8 +79,8 @@ Settings::~Settings() = default;
 Settings::Settings(const Settings&) = default;
 Settings & Settings::operator=(const Settings &) = default;
 
-Settings::Settings(Settings&&) noexcept = default;
-Settings & Settings::operator=(Settings &&) noexcept = default;
+Settings::Settings(Settings&&) CPPCHECK_NOEXCEPT = default;
+Settings & Settings::operator=(Settings &&) CPPCHECK_NOEXCEPT = default;
 
 std::string Settings::loadCppcheckCfg(Settings& settings, Suppressions& suppressions, bool debug)
 {
diff --git a/lib/settings.h b/lib/settings.h
index 04ddb9adb9a..4ec8f794fa5 100644
--- a/lib/settings.h
+++ b/lib/settings.h
@@ -94,6 +94,18 @@ class SimpleEnableGroup {
 };
 
 
+#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ <= 9
+// Hack to workaround GCC bug.
+// Details: https://trac.cppcheck.net/ticket/14850
+// seen on:
+// oraclelinux:8, g++-8.5
+// ubuntu:20.04, g++-9.4.0
+#define  CPPCHECK_NOEXCEPT
+#else
+#define  CPPCHECK_NOEXCEPT  noexcept
+#endif
+
+
 /**
  * @brief This is just a container for general settings so that we don't need
  * to pass individual values to functions or constructors now or in the
@@ -113,8 +125,8 @@ class CPPCHECKLIB WARN_UNUSED Settings {
     Settings(const Settings&);
     Settings& operator=(const Settings&);
 
-    Settings(Settings&&) noexcept;
-    Settings& operator=(Settings&&) noexcept;
+    Settings(Settings&&) CPPCHECK_NOEXCEPT;
+    Settings& operator=(Settings&&) CPPCHECK_NOEXCEPT;
 
     static std::string loadCppcheckCfg(Settings& settings, Suppressions& suppressions, bool debug = false);
 

From f489f9932ca3ec66af920b0de73db1aa1f2cd998 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?=
 <daniel.marjamaki@cppchecksolutions.com>
Date: Thu, 18 Jun 2026 13:31:36 +0200
Subject: [PATCH 2/2] gcc

---
 .github/workflows/CI-gcc-versions.yml | 38 +++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 .github/workflows/CI-gcc-versions.yml

diff --git a/.github/workflows/CI-gcc-versions.yml b/.github/workflows/CI-gcc-versions.yml
new file mode 100644
index 00000000000..a586a77aa82
--- /dev/null
+++ b/.github/workflows/CI-gcc-versions.yml
@@ -0,0 +1,38 @@
+# Syntax reference https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
+# Environment reference https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
+name: CI-gcc-versions
+
+on:
+  push:
+    branches:
+      - 'main'
+      - 'releases/**'
+      - '2.*'
+    tags:
+      - '2.*'
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    strategy:
+      matrix:
+        image: ["gcc:6.5", "gcc:7.5", "gcc:8.5", "gcc:9.5"]
+      fail-fast: false
+
+    runs-on: ubuntu-22.04
+
+    container:
+      image: ${{ matrix.image }}
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Build cppcheck
+        run: |
+          make -j$(nproc) CXXOPTS="-Werror"