Mention ReporterPreferences::shouldReportAllAssertionStarts in docs

The fast path allows `RunContext` to skip disabling output redirect,
and notifying the reporters, turning `RunContext::notifyAssertionStarted`
into a no-op. This improves the overall performance of assertion handling
significantly, and also prepares ground for future changes around
assertion handling and thread safety.

For simple 10M assertion run, this improves the running time by ~30%
in Debug build and ~40% in Release build.

For backwards-compatibility reasons, the fast path is disabled
by default. However, none of the first party reporters use the
`assertionStarting` event, so all first party reporters are opted-in.

.bazelrc

@@ -2,6 +2,7 @@ build --enable_platform_specific_config
 
 build:gcc9 --cxxopt=-std=c++2a
 build:gcc11 --cxxopt=-std=c++2a
+build:gcc13 --cxxopt=-std=c++2a
 build:clang13 --cxxopt=-std=c++17
 build:vs2019 --cxxopt=/std:c++17
 build:vs2022 --cxxopt=/std:c++17

.clang-tidy

@@ -34,7 +34,7 @@ Checks: >-
   -modernize-pass-by-value,
 
   performance-*,
-  -performance-enum-size,
+  performance-enum-size,
 
   portability-*,
 
@@ -49,6 +49,7 @@ Checks: >-
   -readability-implicit-bool-conversion,
   -readability-isolate-declaration,
   -readability-magic-numbers,
+  -readability-math-missing-parentheses, #no, 'a + B * C' obeying math rules is not confusing,
   -readability-named-parameter,
   -readability-qualified-auto,
   -readability-redundant-access-specifiers,

.conan/test_package/CMakeLists.txt

@@ -1,8 +1,7 @@
-cmake_minimum_required(VERSION 3.15)
-project(PackageTest CXX)
+cmake_minimum_required(VERSION 3.16)
+project(PackageTest LANGUAGES CXX)
 
 find_package(Catch2 CONFIG REQUIRED)
 
 add_executable(test_package test_package.cpp)
 target_link_libraries(test_package Catch2::Catch2WithMain)
-target_compile_features(test_package PRIVATE cxx_std_14)

.github/workflows/linux-bazel-builds.yml

@@ -1,4 +1,4 @@
-name: Bazel build
+name: Linux Builds (Bazel)
 
 on: [push, pull_request]
 
@@ -7,18 +7,18 @@ jobs:
     name: Linux Ubuntu 22.04 Bazel build <GCC 11.2.0>
     runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
         compilation_mode: [fastbuild, dbg, opt]
 
     steps:
     - uses: actions/checkout@v4
 
-    - name: Mount bazel cache
+    - name: Mount Bazel cache
       uses: actions/cache@v3
       with:
         path: "/home/runner/.cache/bazel"
         key: bazel-ubuntu22-gcc11
 
-    - name: Build Catch2
-      run: |
-        bazelisk build --compilation_mode=${{matrix.compilation_mode}} //...
+    - name: Build
+      run: bazelisk build --compilation_mode=${{matrix.compilation_mode}} //...

.github/workflows/linux-meson-builds.yml

@@ -1,4 +1,4 @@
-name: Linux builds (meson)
+name: Linux Builds (Meson)
 
 on: [push, pull_request]
 
@@ -7,6 +7,7 @@ jobs:
     name: meson ${{matrix.cxx}}, C++${{matrix.std}}, ${{matrix.build_type}}
     runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
         cxx:
           - g++-11
@@ -25,7 +26,7 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y meson ninja-build ${{matrix.other_pkgs}}
 
-    - name: Configure build
+    - name: Configure
       env:
         CXX: ${{matrix.cxx}}
         CXXFLAGS: -std=c++${{matrix.std}} ${{matrix.cxxflags}}
@@ -34,11 +35,10 @@ jobs:
       run: |
         meson -Dbuildtype=${{matrix.build_type}} ${{runner.workspace}}/meson-build
 
-    - name: Build tests + lib
+    - name: Build
       working-directory: ${{runner.workspace}}/meson-build
       run: ninja
 
-    - name: Run tests
+    - name: Test
       working-directory: ${{runner.workspace}}/meson-build
-      run: |
-        meson test --verbose
+      run: meson test --verbose

.github/workflows/linux-other-builds.yml

@@ -1,72 +1,73 @@
 # The builds in this file are more complex (e.g. they need custom CMake
 # configuration) and thus are unsuitable to the simple build matrix
 # approach used in simple-builds
-name: Linux builds (complex)
+name: Linux Builds (Complex)
 
 on: [push, pull_request]
 
 jobs:
   build:
     name: ${{matrix.build_description}}, ${{matrix.cxx}}, C++${{matrix.std}} ${{matrix.build_type}}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
         # We add builds one by one in this case, because there are no
         # dimensions that are shared across the builds
         include:
 
           # Single surrogate header build
-          - cxx: clang++-10
+          - cxx: clang++-14
             build_description: Surrogates build
             build_type: Debug
             std: 14
-            other_pkgs: clang-10
+            other_pkgs: clang-14
             cmake_configurations: -DCATCH_BUILD_SURROGATES=ON
 
-          # Extras and examples with gcc-7
-          - cxx: g++-7
+          # Extras and examples with gcc-11
+          - cxx: g++-11
             build_description: Extras + Examples
             build_type: Debug
             std: 14
-            other_pkgs: g++-7
+            other_pkgs: g++-11
             cmake_configurations: -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
-          - cxx: g++-7
+          - cxx: g++-11
             build_description: Extras + Examples
             build_type: Release
             std: 14
-            other_pkgs: g++-7
+            other_pkgs: g++-11
             cmake_configurations: -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
 
-          # Extras and examples with Clang-10
-          - cxx: clang++-10
+          # Extras and examples with Clang-14
+          - cxx: clang++-14
             build_description: Extras + Examples
             build_type: Debug
             std: 17
-            other_pkgs: clang-10
+            other_pkgs: clang-14
             cmake_configurations: -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
-          - cxx: clang++-10
+          - cxx: clang++-14
             build_description: Extras + Examples
             build_type: Release
             std: 17
-            other_pkgs: clang-10
+            other_pkgs: clang-14
             cmake_configurations: -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
 
-          # Configure tests with Clang-10
-          - cxx: clang++-10
+          # Configure tests with Clang-14
+          - cxx: clang++-14
             build_description: CMake configuration tests
             build_type: Debug
             std: 14
-            other_pkgs: clang-10
+            other_pkgs: clang-14
             cmake_configurations: -DCATCH_ENABLE_CONFIGURE_TESTS=ON
 
-          # Valgrind test Clang-10
-          - cxx: clang++-10
-            build_description: Valgrind tests
-            build_type: Debug
-            std: 14
-            other_pkgs: clang-10 valgrind
-            cmake_configurations: -DMEMORYCHECK_COMMAND=`which valgrind` -DMEMORYCHECK_COMMAND_OPTIONS="-q --track-origins=yes --leak-check=full --num-callers=50 --show-leak-kinds=definite --error-exitcode=1"
-            other_ctest_args: -T memcheck -LE uses-python
+          # Valgrind test Clang-14
+          # - cxx: clang++-14
+          #   build_description: Valgrind tests
+          #   build_type: Debug
+          #   std: 14
+          #   other_pkgs: clang-14 valgrind
+          #   cmake_configurations: -DMEMORYCHECK_COMMAND=`which valgrind` -DMEMORYCHECK_COMMAND_OPTIONS="-q --track-origins=yes --leak-check=full --num-callers=50 --show-leak-kinds=definite --error-exitcode=1"
+          #   other_ctest_args: -T memcheck -LE uses-python
 
 
     steps:
@@ -78,77 +79,47 @@ jobs:
         sudo apt-get install -y ninja-build ${{matrix.other_pkgs}}
 
     - name: Configure build
-      working-directory: ${{runner.workspace}}
-      env:
-        CXX: ${{matrix.cxx}}
-        CXXFLAGS: ${{matrix.cxxflags}}
-      # Note: $GITHUB_WORKSPACE is distinct from ${{runner.workspace}}.
-      #       This is important
       run: |
-        cmake -Bbuild -H$GITHUB_WORKSPACE \
+        cmake --preset basic-tests -GNinja \
               -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+              -DCMAKE_CXX_COMPILER=${{matrix.cxx}} \
               -DCMAKE_CXX_STANDARD=${{matrix.std}} \
-              -DCMAKE_CXX_STANDARD_REQUIRED=ON \
-              -DCMAKE_CXX_EXTENSIONS=OFF \
-              -DCATCH_DEVELOPMENT_BUILD=ON \
-              ${{matrix.cmake_configurations}} \
-              -G Ninja
+              ${{matrix.cmake_configurations}}
 
-    - name: Build tests + lib
-      working-directory: ${{runner.workspace}}/build
-      run: ninja
+    - name: Build
+      run: cmake --build build
+
+    - name: Test
+      run: ctest --test-dir build -j --output-on-failure
 
-    - name: Run tests
-      env:
-          CTEST_OUTPUT_ON_FAILURE: 1
-      working-directory: ${{runner.workspace}}/build
-      run: ctest -C ${{matrix.build_type}} -j `nproc` ${{matrix.other_ctest_args}}
   clang-tidy:
-    name: clang-tidy ${{matrix.version}}, ${{matrix.build_description}}, C++${{matrix.std}} ${{matrix.build_type}}
+    name: clang-tidy
     runs-on: ubuntu-22.04
-    strategy:
-      matrix:
-        include:
-          - version: "15"
-            build_description: all
-            build_type: Debug
-            std: 17
-            other_pkgs: ''
-            cmake_configurations: -DCATCH_BUILD_EXAMPLES=ON -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
     steps:
     - uses: actions/checkout@v4
 
     - name: Prepare environment
       run: |
         sudo apt-get update
-        sudo apt-get install -y ninja-build clang-${{matrix.version}} clang-tidy-${{matrix.version}} ${{matrix.other_pkgs}}
+        sudo apt-get install -y ninja-build clang-15 clang-tidy-15
 
-    - name: Configure build
-      working-directory: ${{runner.workspace}}
-      env:
-        CXX: clang++-${{matrix.version}}
-        CXXFLAGS: ${{matrix.cxxflags}}
-      # Note: $GITHUB_WORKSPACE is distinct from ${{runner.workspace}}.
-      #       This is important
+    - name: Configure
       run: |
-        clangtidy="clang-tidy-${{matrix.version}};-use-color"
+        clangtidy="clang-tidy-15;-use-color"
         # Use a dummy compiler/linker/ar/ranlib to effectively disable the
         # compilation and only run clang-tidy.
-        cmake -Bbuild -H$GITHUB_WORKSPACE \
-              -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
-              -DCMAKE_CXX_STANDARD=${{matrix.std}} \
-              -DCMAKE_CXX_STANDARD_REQUIRED=ON \
-              -DCMAKE_CXX_EXTENSIONS=OFF \
-              -DCATCH_DEVELOPMENT_BUILD=ON \
-              -DCMAKE_CXX_CLANG_TIDY="$clangtidy" \
-              -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/bin/true \
+        cmake --preset basic-tests -GNinja \
               -DCMAKE_AR=/usr/bin/true \
+              -DCMAKE_BUILD_TYPE=Debug \
+              -DCMAKE_CXX_CLANG_TIDY="$clangtidy" \
               -DCMAKE_CXX_COMPILER_AR=/usr/bin/true \
-              -DCMAKE_RANLIB=/usr/bin/true \
+              -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/bin/true \
+              -DCMAKE_CXX_COMPILER=clang++-15 \
               -DCMAKE_CXX_LINK_EXECUTABLE=/usr/bin/true \
-              ${{matrix.cmake_configurations}} \
-              -G Ninja
+              -DCMAKE_CXX_STANDARD=17 \
+              -DCMAKE_RANLIB=/usr/bin/true \
+              -DCATCH_BUILD_EXAMPLES=ON \
+              -DCATCH_ENABLE_CMAKE_HELPER_TESTS=ON
 
     - name: Run clang-tidy
-      working-directory: ${{runner.workspace}}/build
-      run: ninja
+      run: cmake --build build

.github/workflows/linux-simple-builds.yml

@@ -1,40 +1,39 @@
-name: Linux builds (basic)
+name: Linux Builds (Basic)
 
 on: [push, pull_request]
 
 jobs:
   build:
     name: ${{matrix.cxx}}, C++${{matrix.std}}, ${{matrix.build_type}}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
         cxx:
-          - g++-5
-          - g++-6
-          - g++-7
-          - g++-8
           - g++-9
           - g++-10
+          - g++-11
+          - g++-12
           - clang++-6.0
           - clang++-7
           - clang++-8
           - clang++-9
           - clang++-10
+          - clang++-11
+          - clang++-12
+          - clang++-13
+          - clang++-14
         build_type: [Debug, Release]
         std: [14]
         include:
-          - cxx: g++-5
-            other_pkgs: g++-5
-          - cxx: g++-6
-            other_pkgs: g++-6
-          - cxx: g++-7
-            other_pkgs: g++-7
-          - cxx: g++-8
-            other_pkgs: g++-8
           - cxx: g++-9
             other_pkgs: g++-9
           - cxx: g++-10
             other_pkgs: g++-10
+          - cxx: g++-11
+            other_pkgs: g++-11
+          - cxx: g++-12
+            other_pkgs: g++-12
           - cxx: clang++-6.0
             other_pkgs: clang-6.0
           - cxx: clang++-7
@@ -45,79 +44,62 @@ jobs:
             other_pkgs: clang-9
           - cxx: clang++-10
             other_pkgs: clang-10
-          # Clang 6 + C++17
-          # does not work with the default libstdc++ version thanks
-          # to a disagreement on variant implementation.
-          # - cxx: clang++-6.0
-          #   build_type: Debug
-          #   std: 17
-          #   other_pkgs: clang-6.0
-          # - cxx: clang++-6.0
-          #   build_type: Release
-          #   std: 17
-          #   other_pkgs: clang-6.0
-          # Clang 10 + C++17
-          - cxx: clang++-10
+          - cxx: clang++-11
+            other_pkgs: clang-11
+          - cxx: clang++-12
+            other_pkgs: clang-12
+          - cxx: clang++-13
+            other_pkgs: clang-13
+          - cxx: clang++-14
+            other_pkgs: clang-14
+          # Clang 14 + C++17
+          - cxx: clang++-14
             build_type: Debug
             std: 17
-            other_pkgs: clang-10
-          - cxx: clang++-10
+            other_pkgs: clang-14
+          - cxx: clang++-14
             build_type: Release
             std: 17
-            other_pkgs: clang-10
-          - cxx: clang++-10
+            other_pkgs: clang-14
+          - cxx: clang++-14
             build_type: Debug
             std: 20
-            other_pkgs: clang-10
-          - cxx: clang++-10
+            other_pkgs: clang-14
+          - cxx: clang++-14
             build_type: Release
             std: 20
-            other_pkgs: clang-10
-          - cxx: g++-10
+            other_pkgs: clang-14
+          - cxx: g++-11
             build_type: Debug
             std: 20
-            other_pkgs: g++-10
-          - cxx: g++-10
+            other_pkgs: g++-11
+          - cxx: g++-11
             build_type: Release
             std: 20
-            other_pkgs: g++-10
+            other_pkgs: g++-11
 
     steps:
     - uses: actions/checkout@v4
 
-    - name: Add repositories for older GCC
+    - name: Add repositories for older compilers
       run: |
-        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic main'
-        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ bionic universe'
-      if: ${{ matrix.cxx == 'g++-5' || matrix.cxx == 'g++-6' }}
+        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ focal main'
+        sudo apt-add-repository 'deb http://azure.archive.ubuntu.com/ubuntu/ focal universe'
 
     - name: Prepare environment
       run: |
         sudo apt-get update
         sudo apt-get install -y ninja-build ${{matrix.other_pkgs}}
 
-    - name: Configure build
-      working-directory: ${{runner.workspace}}
-      env:
-        CXX: ${{matrix.cxx}}
-        CXXFLAGS: ${{matrix.cxxflags}}
-      # Note: $GITHUB_WORKSPACE is distinct from ${{runner.workspace}}.
-      #       This is important
+    - name: Configure
       run: |
-        cmake -Bbuild -H$GITHUB_WORKSPACE \
+        cmake --preset basic-tests -GNinja \
               -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
-              -DCMAKE_CXX_STANDARD=${{matrix.std}} \
-              -DCMAKE_CXX_STANDARD_REQUIRED=ON \
-              -DCMAKE_CXX_EXTENSIONS=OFF \
-              -DCATCH_DEVELOPMENT_BUILD=ON \
-              -G Ninja
+              -DCMAKE_CXX_COMPILER=${{matrix.cxx}} \
+              -DCMAKE_CXX_STANDARD=${{matrix.std}}
 
-    - name: Build tests + lib
-      working-directory: ${{runner.workspace}}/build
-      run: ninja
+    - name: Build
+      run: cmake --build build
 
-    - name: Run tests
-      env:
-          CTEST_OUTPUT_ON_FAILURE: 1
-      working-directory: ${{runner.workspace}}/build
-      run: ctest -C ${{matrix.build_type}} -j `nproc`
+    - name: Test
+      run: ctest --test-dir build -j --output-on-failure

.github/workflows/mac-builds-m1.yml

@@ -1,44 +0,0 @@
-name: M1 Mac builds
-
-on: [push, pull_request]
-
-jobs:
-  build:
-    runs-on: macos-14
-    strategy:
-      matrix:
-        cxx:
-          - clang++
-        build_type: [Debug, Release]
-        std: [14, 17]
-        include:
-          - build_type: Debug
-            examples: ON
-            extra_tests: ON
-
-    steps:
-    - uses: actions/checkout@v4
-
-    - name: Configure build
-      working-directory: ${{runner.workspace}}
-      env:
-        CXX: ${{matrix.cxx}}
-        CXXFLAGS: ${{matrix.cxxflags}}
-      run: |
-        cmake -Bbuild -H$GITHUB_WORKSPACE \
-              -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
-              -DCMAKE_CXX_STANDARD=${{matrix.std}} \
-              -DCMAKE_CXX_STANDARD_REQUIRED=ON \
-              -DCATCH_DEVELOPMENT_BUILD=ON \
-              -DCATCH_BUILD_EXAMPLES=${{matrix.examples}} \
-              -DCATCH_BUILD_EXTRA_TESTS=${{matrix.examples}}
-
-    - name: Build tests + lib
-      working-directory: ${{runner.workspace}}/build
-      run: make -j `sysctl -n hw.ncpu`
-
-    - name: Run tests
-      env:
-          CTEST_OUTPUT_ON_FAILURE: 1
-      working-directory: ${{runner.workspace}}/build
-      run: ctest -C ${{matrix.build_type}} -j `sysctl -n hw.ncpu`

.github/workflows/mac-builds.yml

@@ -1,44 +1,32 @@
-name: Mac builds
+name: Mac Builds
 
 on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: macos-12
+    # From macos-14 forward, the baseline "macos-X" image is Arm based,
+    # and not Intel based.
+    runs-on: ${{matrix.image}}
     strategy:
+      fail-fast: false
       matrix:
-        cxx:
-          - clang++
+        image: [macos-13, macos-14, macos-15]
         build_type: [Debug, Release]
         std: [14, 17]
-        include:
-          - build_type: Debug
-            examples: ON
-            extra_tests: ON
 
     steps:
     - uses: actions/checkout@v4
 
-    - name: Configure build
-      working-directory: ${{runner.workspace}}
-      env:
-        CXX: ${{matrix.cxx}}
-        CXXFLAGS: ${{matrix.cxxflags}}
+    - name: Configure
       run: |
-        cmake -Bbuild -H$GITHUB_WORKSPACE \
+        cmake --preset basic-tests -GNinja \
               -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
               -DCMAKE_CXX_STANDARD=${{matrix.std}} \
-              -DCMAKE_CXX_STANDARD_REQUIRED=ON \
-              -DCATCH_DEVELOPMENT_BUILD=ON \
-              -DCATCH_BUILD_EXAMPLES=${{matrix.examples}} \
-              -DCATCH_BUILD_EXTRA_TESTS=${{matrix.examples}}
+              -DCATCH_BUILD_EXAMPLES=ON \
+              -DCATCH_BUILD_EXTRA_TESTS=ON
 
-    - name: Build tests + lib
-      working-directory: ${{runner.workspace}}/build
-      run: make -j `sysctl -n hw.ncpu`
+    - name: Build
+      run: cmake --build build
 
-    - name: Run tests
-      env:
-          CTEST_OUTPUT_ON_FAILURE: 1
-      working-directory: ${{runner.workspace}}/build
-      run: ctest -C ${{matrix.build_type}} -j `sysctl -n hw.ncpu`
+    - name: Test
+      run: ctest --test-dir build -j --output-on-failure

.github/workflows/package-manager-builds.yaml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   conan_builds:
     name: Conan ${{matrix.conan_version}}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         conan_version:

.github/workflows/validate-header-guards.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   build:
     # Set the type of machine to run on
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
 
       - name: Checkout source code

.github/workflows/windows-simple-builds.yml

@@ -1,4 +1,4 @@
-name: Windows builds (basic)
+name: Windows Builds (Basic)
 
 on: [push, pull_request]
 
@@ -7,8 +7,9 @@ jobs:
     name: ${{matrix.os}}, ${{matrix.std}}, ${{matrix.build_type}}, ${{matrix.platform}}
     runs-on: ${{matrix.os}}
     strategy:
+      fail-fast: false
       matrix:
-        os: [windows-2019, windows-2022]
+        os: [windows-2022, windows-2025]
         platform: [Win32, x64]
         build_type: [Debug, Release]
         std: [14, 17]
@@ -16,22 +17,15 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Configure build
-        working-directory: ${{runner.workspace}}
         run: |
-          cmake -S $Env:GITHUB_WORKSPACE               `
-                -B ${{runner.workspace}}/build         `
-                -DCMAKE_CXX_STANDARD=${{matrix.std}}   `
-                -A ${{matrix.platform}}                `
-                --preset all-tests
+          cmake --preset all-tests `
+                -A ${{matrix.platform}} `
+                -DCMAKE_CXX_STANDARD=${{matrix.std}} `
 
       - name: Build tests
-        working-directory: ${{runner.workspace}}
         run: cmake --build build --config ${{matrix.build_type}} --parallel %NUMBER_OF_PROCESSORS%
         shell: cmd
 
       - name: Run tests
-        working-directory: ${{runner.workspace}}/build
-        env:
-            CTEST_OUTPUT_ON_FAILURE: 1
-        run: ctest -C ${{matrix.build_type}} -j %NUMBER_OF_PROCESSORS%
+        run: ctest --test-dir build -C ${{matrix.build_type}} -j %NUMBER_OF_PROCESSORS% --output-on-failure
         shell: cmd

BUILD.bazel

@@ -1,4 +1,20 @@
 load("@bazel_skylib//rules:expand_template.bzl", "expand_template")
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+load("@rules_license//rules:license.bzl", "license")
+
+package(
+    default_applicable_licenses = [":license"],
+)
+
+exports_files([
+    "LICENSE.MIT",
+])
+
+license(
+    name = "license",
+    license_kinds = ["@rules_license//licenses/spdx:BSL-1.0"],
+    license_text = "LICENSE.MIT",
+)
 
 expand_template(
     name = "catch_user_config",
@@ -56,6 +72,8 @@ expand_template(
         "#cmakedefine CATCH_CONFIG_WCHAR": "",
         "#cmakedefine CATCH_CONFIG_WINDOWS_CRTDBG": "",
         "#cmakedefine CATCH_CONFIG_WINDOWS_SEH": "",
+        "#cmakedefine CATCH_CONFIG_USE_BUILTIN_CONSTANT_P": "",
+        "#cmakedefine CATCH_CONFIG_NO_USE_BUILTIN_CONSTANT_P": "",
     },
     template = "src/catch2/catch_user_config.hpp.in",
 )
@@ -66,7 +84,7 @@ expand_template(
 cc_library(
     name = "catch2_generated",
     hdrs = ["catch2/catch_user_config.hpp"],
-    include_prefix = ".",  # to manipulate -I of dependenices
+    include_prefix = ".",  # to manipulate -I of dependencies
     visibility = ["//visibility:public"],
 )
 

CMake/Catch2Config.cmake.in

@@ -1,10 +1,9 @@
 @PACKAGE_INIT@
 
-
 # Avoid repeatedly including the targets
 if(NOT TARGET Catch2::Catch2)
-    # Provide path for scripts
-    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+  # Provide path for scripts
+  list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
 
-    include(${CMAKE_CURRENT_LIST_DIR}/Catch2Targets.cmake)
+  include(${CMAKE_CURRENT_LIST_DIR}/Catch2Targets.cmake)
 endif()

CMake/CatchConfigOptions.cmake

@@ -14,7 +14,6 @@
 #
 # For detailed docs look into docs/configuration.md
 
-
 macro(AddOverridableConfigOption OptionBaseName)
   option(CATCH_CONFIG_${OptionBaseName} "Read docs/configuration.md for details" OFF)
   option(CATCH_CONFIG_NO_${OptionBaseName} "Read docs/configuration.md for details" OFF)
@@ -44,6 +43,7 @@ set(_OverridableOptions
   "WINDOWS_SEH"
   "GETENV"
   "EXPERIMENTAL_STATIC_ANALYSIS_SUPPORT"
+  "USE_BUILTIN_CONSTANT_P"
 )
 
 foreach(OptionName ${_OverridableOptions})
@@ -73,9 +73,9 @@ foreach(OptionName ${_OtherConfigOptions})
   AddConfigOption(${OptionName})
 endforeach()
 if(DEFINED BUILD_SHARED_LIBS)
-    set(CATCH_CONFIG_SHARED_LIBRARY ${BUILD_SHARED_LIBS})
+  set(CATCH_CONFIG_SHARED_LIBRARY ${BUILD_SHARED_LIBS})
 else()
-    set(CATCH_CONFIG_SHARED_LIBRARY "")
+  set(CATCH_CONFIG_SHARED_LIBRARY "")
 endif()
 
 set(CATCH_CONFIG_DEFAULT_REPORTER "console" CACHE STRING "Read docs/configuration.md for details. The name of the reporter should be without quotes.")

CMake/CatchMiscFunctions.cmake

@@ -8,108 +8,107 @@
 
 include(CheckCXXCompilerFlag)
 function(add_cxx_flag_if_supported_to_targets flagname targets)
-    string(MAKE_C_IDENTIFIER ${flagname} flag_identifier )
-    check_cxx_compiler_flag("${flagname}" HAVE_FLAG_${flag_identifier})
+  string(MAKE_C_IDENTIFIER ${flagname} flag_identifier)
+  check_cxx_compiler_flag("${flagname}" HAVE_FLAG_${flag_identifier})
 
-    if (HAVE_FLAG_${flag_identifier})
-        foreach(target ${targets})
-            target_compile_options(${target} PRIVATE ${flagname})
-        endforeach()
-    endif()
+  if(HAVE_FLAG_${flag_identifier})
+    foreach(target ${targets})
+      target_compile_options(${target} PRIVATE ${flagname})
+    endforeach()
+  endif()
 endfunction()
 
 # Assumes that it is only called for development builds, where warnings
 # and Werror is desired, so it also enables Werror.
 function(add_warnings_to_targets targets)
-    LIST(LENGTH targets TARGETS_LEN)
-    # For now we just assume 2 possibilities: msvc and msvc-like compilers,
-    # and other.
-    if (MSVC)
-        foreach(target ${targets})
-            # Force MSVC to consider everything as encoded in utf-8
-            target_compile_options( ${target} PRIVATE /utf-8 )
-            # Enable Werror equivalent
-            if (CATCH_ENABLE_WERROR)
-                target_compile_options( ${target} PRIVATE /WX )
-            endif()
+  LIST(LENGTH targets TARGETS_LEN)
+  # For now we just assume 2 possibilities: msvc and msvc-like compilers,
+  # and other.
+  if(MSVC)
+    foreach(target ${targets})
+      # Force MSVC to consider everything as encoded in utf-8
+      target_compile_options(${target} PRIVATE /utf-8)
+      # Enable Werror equivalent
+      if(CATCH_ENABLE_WERROR)
+        target_compile_options(${target} PRIVATE /WX)
+      endif()
 
-            # MSVC is currently handled specially
-            if ( CMAKE_CXX_COMPILER_ID MATCHES "MSVC" )
-                STRING(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS}) # override default warning level
-                target_compile_options( ${target} PRIVATE /w44265 /w44061 /w44062 /w45038 )
-            endif()
-        endforeach()
+      # MSVC is currently handled specially
+      if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+        STRING(REGEX REPLACE "/W[0-9]" "/W4" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS}) # override default warning level
+        target_compile_options(${target} PRIVATE /w44265 /w44061 /w44062 /w45038)
+      endif()
+    endforeach()
+  endif()
 
+  if(NOT MSVC)
+    set(CHECKED_WARNING_FLAGS
+      "-Wabsolute-value"
+      "-Wall"
+      "-Wcall-to-pure-virtual-from-ctor-dtor"
+      "-Wcast-align"
+      "-Wcatch-value"
+      "-Wdangling"
+      "-Wdeprecated"
+      "-Wdeprecated-register"
+      "-Wexceptions"
+      "-Wexit-time-destructors"
+      "-Wextra"
+      "-Wextra-semi"
+      "-Wfloat-equal"
+      "-Wglobal-constructors"
+      "-Winit-self"
+      "-Wmisleading-indentation"
+      "-Wmismatched-new-delete"
+      "-Wmismatched-return-types"
+      "-Wmismatched-tags"
+      "-Wmissing-braces"
+      "-Wmissing-declarations"
+      "-Wmissing-noreturn"
+      "-Wmissing-prototypes"
+      "-Wmissing-variable-declarations"
+      "-Wnon-virtual-dtor"
+      "-Wnull-dereference"
+      "-Wold-style-cast"
+      "-Woverloaded-virtual"
+      "-Wparentheses"
+      "-Wpedantic"
+      "-Wredundant-decls"
+      "-Wreorder"
+      "-Wreturn-std-move"
+      "-Wshadow"
+      "-Wstrict-aliasing"
+      "-Wsubobject-linkage"
+      "-Wsuggest-destructor-override"
+      "-Wsuggest-override"
+      "-Wundef"
+      "-Wuninitialized"
+      "-Wunneeded-internal-declaration"
+      "-Wunreachable-code-aggressive"
+      "-Wunused"
+      "-Wunused-function"
+      "-Wunused-parameter"
+      "-Wvla"
+      "-Wweak-vtables"
+
+      # This is a useful warning, but our tests sometimes rely on
+      # functions being present, but not picked (e.g. various checks
+      # for stringification implementation ordering).
+      # Ergo, we should use it every now and then, but we cannot
+      # enable it by default.
+      # "-Wunused-member-function"
+    )
+    foreach(warning ${CHECKED_WARNING_FLAGS})
+      add_cxx_flag_if_supported_to_targets(${warning} "${targets}")
+    endforeach()
+
+    if(CATCH_ENABLE_WERROR)
+      foreach(target ${targets})
+        # Enable Werror equivalent
+        target_compile_options(${target} PRIVATE -Werror)
+      endforeach()
     endif()
-
-    if (NOT MSVC)
-        set(CHECKED_WARNING_FLAGS
-          "-Wabsolute-value"
-          "-Wall"
-          "-Wcall-to-pure-virtual-from-ctor-dtor"
-          "-Wcast-align"
-          "-Wcatch-value"
-          "-Wdangling"
-          "-Wdeprecated"
-          "-Wdeprecated-register"
-          "-Wexceptions"
-          "-Wexit-time-destructors"
-          "-Wextra"
-          "-Wextra-semi"
-          "-Wfloat-equal"
-          "-Wglobal-constructors"
-          "-Winit-self"
-          "-Wmisleading-indentation"
-          "-Wmismatched-new-delete"
-          "-Wmismatched-return-types"
-          "-Wmismatched-tags"
-          "-Wmissing-braces"
-          "-Wmissing-declarations"
-          "-Wmissing-noreturn"
-          "-Wmissing-prototypes"
-          "-Wmissing-variable-declarations"
-          "-Wnon-virtual-dtor"
-          "-Wnull-dereference"
-          "-Wold-style-cast"
-          "-Woverloaded-virtual"
-          "-Wparentheses"
-          "-Wpedantic"
-          "-Wredundant-decls"
-          "-Wreorder"
-          "-Wreturn-std-move"
-          "-Wshadow"
-          "-Wstrict-aliasing"
-          "-Wsubobject-linkage"
-          "-Wsuggest-destructor-override"
-          "-Wsuggest-override"
-          "-Wundef"
-          "-Wuninitialized"
-          "-Wunneeded-internal-declaration"
-          "-Wunreachable-code-aggressive"
-          "-Wunused"
-          "-Wunused-function"
-          "-Wunused-parameter"
-          "-Wvla"
-          "-Wweak-vtables"
-
-          # This is a useful warning, but our tests sometimes rely on
-          # functions being present, but not picked (e.g. various checks
-          # for stringification implementation ordering).
-          # Ergo, we should use it every now and then, but we cannot
-          # enable it by default.
-          # "-Wunused-member-function"
-        )
-        foreach(warning ${CHECKED_WARNING_FLAGS})
-            add_cxx_flag_if_supported_to_targets(${warning} "${targets}")
-        endforeach()
-
-        if (CATCH_ENABLE_WERROR)
-            foreach(target ${targets})
-                # Enable Werror equivalent
-                target_compile_options( ${target} PRIVATE -Werror )
-            endforeach()
-        endif()
-    endif()
+  endif()
 endfunction()
 
 # Adds flags required for reproducible build to the target

CMake/catch2-with-main.pc.in

@@ -1,10 +1,10 @@
-includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
-libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+prefix=@CMAKE_INSTALL_PREFIX@
+libdir=${prefix}/@lib_dir@
 pkg_version=@Catch2_VERSION@
 
-Name: Catch2-With-Main
+Name: Catch2 with main function
 Description: A modern, C++-native test framework for C++14 and above (links in default main)
+URL: https://github.com/catchorg/Catch2
 Version: ${pkg_version}
 Requires: catch2 = ${pkg_version}
-Cflags: -I${includedir}
-Libs: -L${libdir} -lCatch2Main
+Libs: -L${libdir} -l@lib_name@

CMake/catch2.pc.in

@@ -1,11 +1,11 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
-libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=${prefix}/@include_dir@
+libdir=${prefix}/@lib_dir@
 
 Name: Catch2
 Description: A modern, C++-native, test framework for C++14 and above
 URL: https://github.com/catchorg/Catch2
 Version: @Catch2_VERSION@
 Cflags: -I${includedir}
-Libs: -L${libdir} -lCatch2
+Libs: -L${libdir} -l@lib_name@

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.16)
 
 # detect if Catch is being bundled,
 # disable testsuite in that case
@@ -8,6 +8,8 @@ else()
   set(NOT_SUBPROJECT OFF)
 endif()
 
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
 option(CATCH_INSTALL_DOCS "Install documentation alongside library" ON)
 option(CATCH_INSTALL_EXTRAS "Install extras (CMake scripts, debugger helpers) alongside library" ON)
 option(CATCH_DEVELOPMENT_BUILD "Build tests, enable warnings, enable Werror, etc" OFF)
@@ -24,30 +26,26 @@ cmake_dependent_option(CATCH_BUILD_SURROGATES "Enable generating and building su
 cmake_dependent_option(CATCH_ENABLE_CONFIGURE_TESTS "Enable CMake configuration tests. WARNING: VERY EXPENSIVE" OFF "CATCH_DEVELOPMENT_BUILD" OFF)
 cmake_dependent_option(CATCH_ENABLE_CMAKE_HELPER_TESTS "Enable CMake helper tests. WARNING: VERY EXPENSIVE" OFF "CATCH_DEVELOPMENT_BUILD" OFF)
 
-
 # Catch2's build breaks if done in-tree. You probably should not build
 # things in tree anyway, but we can allow projects that include Catch2
 # as a subproject to build in-tree as long as it is not in our tree.
-if (CMAKE_BINARY_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-    message(FATAL_ERROR "Building in-source is not supported! Create a build dir and remove ${CMAKE_SOURCE_DIR}/CMakeCache.txt")
+if(CMAKE_BINARY_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  message(FATAL_ERROR "Building in-source is not supported! Create a build dir and remove ${CMAKE_SOURCE_DIR}/CMakeCache.txt")
 endif()
 
 project(Catch2
-  VERSION 3.7.0 # CML version placeholder, don't delete
+  VERSION 3.8.1 # CML version placeholder, don't delete
   LANGUAGES CXX
-  # HOMEPAGE_URL is not supported until CMake version 3.12, which
-  # we do not target yet.
-  # HOMEPAGE_URL "https://github.com/catchorg/Catch2"
+  HOMEPAGE_URL "https://github.com/catchorg/Catch2"
   DESCRIPTION "A modern, C++-native, unit test framework."
 )
 
-
 # Provide path for scripts. We first add path to the scripts we don't use,
 # but projects including us might, and set the path up to parent scope.
 # Then we also add path that we use to configure the project, but is of
 # no use to top level projects.
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/extras")
-if (NOT NOT_SUBPROJECT)
+if(NOT NOT_SUBPROJECT)
   set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" PARENT_SCOPE)
 endif()
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/CMake")
@@ -68,10 +66,9 @@ set(CATCH_CMAKE_CONFIG_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/Catch2")
 # are built during these tests, so this is required here, before
 # the subdirectories are added.
 if(CATCH_TEST_USE_WMAIN)
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /ENTRY:wmainCRTStartup")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /ENTRY:wmainCRTStartup")
 endif()
 
-
 # Basic paths
 set(CATCH_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(SOURCES_DIR ${CATCH_DIR}/src/catch2)
@@ -81,121 +78,141 @@ set(SELF_TEST_DIR ${CATCH_DIR}/tests/SelfTest)
 add_subdirectory(src)
 
 # Build tests only if requested
-if (BUILD_TESTING AND CATCH_BUILD_TESTING AND NOT_SUBPROJECT)
-    find_package(PythonInterp 3 REQUIRED)
-    if (NOT PYTHONINTERP_FOUND)
-        message(FATAL_ERROR "Python not found, but required for tests")
-    endif()
-    add_subdirectory(tests)
+if(BUILD_TESTING AND CATCH_BUILD_TESTING AND NOT_SUBPROJECT)
+  find_package(Python3 REQUIRED COMPONENTS Interpreter)
+  if(NOT TARGET Python3::Interpreter)
+    message(FATAL_ERROR "Python not found, but required for tests")
+  endif()
+  set(CMAKE_FOLDER "tests")
+  add_subdirectory(tests)
 endif()
 
 if(CATCH_BUILD_EXAMPLES)
-    add_subdirectory(examples)
+  set(CMAKE_FOLDER "Examples")
+  add_subdirectory(examples)
 endif()
 
 if(CATCH_BUILD_EXTRA_TESTS)
-    add_subdirectory(tests/ExtraTests)
+  set(CMAKE_FOLDER "tests/ExtraTests")
+  add_subdirectory(tests/ExtraTests)
 endif()
 
 if(CATCH_BUILD_FUZZERS)
-    add_subdirectory(fuzzing)
+  set(CMAKE_FOLDER "fuzzing")
+  add_subdirectory(fuzzing)
 endif()
 
-if (CATCH_DEVELOPMENT_BUILD)
-    add_warnings_to_targets("${CATCH_WARNING_TARGETS}")
+if(CATCH_DEVELOPMENT_BUILD)
+  set(CATCH_ALL_TARGETS ${CATCH_IMPL_TARGETS} ${CATCH_TEST_TARGETS})
+  add_warnings_to_targets("${CATCH_ALL_TARGETS}")
+  # After we added the noreturn hint to FAIL and SKIP, Clang became
+  # extremely good at diagnosing tests that test these macros as being
+  # noreturn, but not marked as such. This made the warning useless for
+  # our test files.
+  add_cxx_flag_if_supported_to_targets("-Wno-missing-noreturn" "${CATCH_TEST_TARGETS}")
 endif()
 
 # Only perform the installation steps when Catch is not being used as
 # a subproject via `add_subdirectory`, or the destinations will break,
 # see https://github.com/catchorg/Catch2/issues/1373
-if (NOT_SUBPROJECT)
-    configure_package_config_file(
-        ${CMAKE_CURRENT_LIST_DIR}/CMake/Catch2Config.cmake.in
-        ${CMAKE_CURRENT_BINARY_DIR}/Catch2Config.cmake
-        INSTALL_DESTINATION
-          ${CATCH_CMAKE_CONFIG_DESTINATION}
-    )
+if(NOT_SUBPROJECT)
+  configure_package_config_file(
+    ${CMAKE_CURRENT_LIST_DIR}/CMake/Catch2Config.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/Catch2Config.cmake
+    INSTALL_DESTINATION
+      ${CATCH_CMAKE_CONFIG_DESTINATION}
+  )
 
-    write_basic_package_version_file(
+  write_basic_package_version_file(
+    "${CMAKE_CURRENT_BINARY_DIR}/Catch2ConfigVersion.cmake"
+    COMPATIBILITY
+      SameMajorVersion
+  )
+
+  install(
+    FILES
+      "${CMAKE_CURRENT_BINARY_DIR}/Catch2Config.cmake"
       "${CMAKE_CURRENT_BINARY_DIR}/Catch2ConfigVersion.cmake"
-      COMPATIBILITY
-        SameMajorVersion
-    )
+    DESTINATION
+      ${CATCH_CMAKE_CONFIG_DESTINATION}
+  )
 
+  # Install documentation
+  if(CATCH_INSTALL_DOCS)
+    install(
+      DIRECTORY
+        docs/
+      DESTINATION
+        "${CMAKE_INSTALL_DOCDIR}"
+      PATTERN "doxygen" EXCLUDE
+    )
+  endif()
+
+  if(CATCH_INSTALL_EXTRAS)
+    # Install CMake scripts
     install(
       FILES
-        "${CMAKE_CURRENT_BINARY_DIR}/Catch2Config.cmake"
-        "${CMAKE_CURRENT_BINARY_DIR}/Catch2ConfigVersion.cmake"
+        "extras/ParseAndAddCatchTests.cmake"
+        "extras/Catch.cmake"
+        "extras/CatchAddTests.cmake"
+        "extras/CatchShardTests.cmake"
+        "extras/CatchShardTestsImpl.cmake"
       DESTINATION
         ${CATCH_CMAKE_CONFIG_DESTINATION}
     )
 
-    # Install documentation
-    if(CATCH_INSTALL_DOCS)
-      install(
-        DIRECTORY
-          docs/
-        DESTINATION
-          "${CMAKE_INSTALL_DOCDIR}"
-        PATTERN "doxygen" EXCLUDE
-      )
-    endif()
-
-    if(CATCH_INSTALL_EXTRAS)
-        # Install CMake scripts
-        install(
-          FILES
-            "extras/ParseAndAddCatchTests.cmake"
-            "extras/Catch.cmake"
-            "extras/CatchAddTests.cmake"
-            "extras/CatchShardTests.cmake"
-            "extras/CatchShardTestsImpl.cmake"
-          DESTINATION
-            ${CATCH_CMAKE_CONFIG_DESTINATION}
-        )
-    
-        # Install debugger helpers
-        install(
-          FILES
-            "extras/gdbinit"
-            "extras/lldbinit"
-          DESTINATION
-            ${CMAKE_INSTALL_DATAROOTDIR}/Catch2
-        )
-    endif()
-
-    ## Provide some pkg-config integration
-    set(PKGCONFIG_INSTALL_DIR
-        "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig"
-        CACHE PATH "Path where catch2.pc is installed"
-    )
-    configure_file(
-      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/catch2.pc.in
-      ${CMAKE_CURRENT_BINARY_DIR}/catch2.pc
-      @ONLY
-    )
-    configure_file(
-      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/catch2-with-main.pc.in
-      ${CMAKE_CURRENT_BINARY_DIR}/catch2-with-main.pc
-      @ONLY
-    )
+    # Install debugger helpers
     install(
       FILES
-        "${CMAKE_CURRENT_BINARY_DIR}/catch2.pc"
-        "${CMAKE_CURRENT_BINARY_DIR}/catch2-with-main.pc"
+        "extras/gdbinit"
+        "extras/lldbinit"
       DESTINATION
-        ${PKGCONFIG_INSTALL_DIR}
+        ${CMAKE_INSTALL_DATAROOTDIR}/Catch2
     )
+  endif()
 
-    # CPack/CMake started taking the package version from project version 3.12
-    # So we need to set the version manually for older CMake versions
-    if(${CMAKE_VERSION} VERSION_LESS "3.12.0")
-        set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
-    endif()
+  ## Provide some pkg-config integration
+  set(PKGCONFIG_INSTALL_DIR
+    "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig"
+    CACHE PATH "Path where catch2.pc is installed"
+  )
 
-    set(CPACK_PACKAGE_CONTACT "https://github.com/catchorg/Catch2/")
+  # Generate the pkg-config files
+  # To understand the script below, you have to understand that it works in two steps.
+  # 1) A CMake script is generated at configuration time
+  # 2) It is executed at install time.
+  # And both of these have access to different parts of the information we need.
+  #
+  # Further, the variables before "[[" are expanded at configuration time,
+  # while the ones inside the [[]] block are expanded at script execution (install) time.
+  string(
+    JOIN "\n"
+      install_script
+       "set(install_pkgconfdir \"${PKGCONFIG_INSTALL_DIR}\")"
+       "set(impl_pc_file \"${CMAKE_CURRENT_SOURCE_DIR}/CMake/catch2.pc.in\")"
+       "set(main_pc_file \"${CMAKE_CURRENT_SOURCE_DIR}/CMake/catch2-with-main.pc.in\")"
+       "set(Catch2_VERSION ${Catch2_VERSION})"
+       "set(include_dir \"${CMAKE_INSTALL_INCLUDEDIR}\")"
+       "set(lib_dir \"${CMAKE_INSTALL_LIBDIR}\")"
+       [[
+         set(lib_name "$<TARGET_FILE_BASE_NAME:Catch2>")
+         configure_file(
+           "${impl_pc_file}"
+           "${CMAKE_INSTALL_PREFIX}/${install_pkgconfdir}/catch2.pc"
+           @ONLY
+         )
 
+         set(lib_name "$<TARGET_FILE_BASE_NAME:Catch2WithMain>")
+         configure_file(
+           "${main_pc_file}"
+           "${CMAKE_INSTALL_PREFIX}/${install_pkgconfdir}/catch2-with-main.pc"
+           @ONLY
+         )
+       ]]
+  )
+  install(CODE "${install_script}")
 
-    include( CPack )
+  set(CPACK_PACKAGE_CONTACT "https://github.com/catchorg/Catch2/")
 
+  include(CPack)
 endif()

CMakePresets.json

@@ -3,9 +3,14 @@
     "configurePresets": [
         {
             "name": "basic-tests",
+            "binaryDir": "build",
+            "installDir": "build/install",
             "displayName": "Basic development build",
             "description": "Enables development build with basic tests that are cheap to build and run",
             "cacheVariables": {
+                "CMAKE_CXX_EXTENSIONS": "OFF",
+                "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+                "CMAKE_EXPORT_COMPILE_COMMANDS": "ON",
                 "CATCH_DEVELOPMENT_BUILD": "ON"
             }
         },

MAINTAINERS.md

@@ -0,0 +1,11 @@
+<a id="top"></a>
+# Catch2 Maintainers
+
+## Current
+
+* Chris Thrasher ([@christhrasher](https://github.com/ChrisThrasher)), gpg key: 56FB686C9DFC8E2C
+* Martin Hořeňovský ([@horenmar](https://github.com/horenmar)), gpg key: E29C46F3B8A7502860793B7DECC9C20E314B2360
+
+## Retired
+
+* Phil Nash ([@philsquared](https://github.com/philsquared))

MODULE.bazel

@@ -1,3 +1,5 @@
 module(name = "catch2")
 
 bazel_dep(name = "bazel_skylib", version = "1.7.1")
+bazel_dep(name = "rules_cc", version = "0.1.1")
+bazel_dep(name = "rules_license", version = "1.0.0")

README.md

@@ -1,5 +1,5 @@
 <a id="top"></a>
-![Catch2 logo](data/artwork/catch2-logo-small-with-background.png)
+![Catch2 logo](data/artwork/catch2-logo-full-with-background.svg)
 
 [![Github Releases](https://img.shields.io/github/release/catchorg/catch2.svg)](https://github.com/catchorg/catch2/releases)
 [![Linux build status](https://github.com/catchorg/Catch2/actions/workflows/linux-simple-builds.yml/badge.svg)](https://github.com/catchorg/Catch2/actions/workflows/linux-simple-builds.yml)

WORKSPACE.bazel

@@ -1,16 +0,0 @@
-workspace(name = "catch2")
-
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
-http_archive(
-    name = "bazel_skylib",
-    sha256 = "bc283cdfcd526a52c3201279cda4bc298652efa898b10b4db0837dc51652756f",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.7.1/bazel-skylib-1.7.1.tar.gz",
-        "https://github.com/bazelbuild/bazel-skylib/releases/download/1.7.1/bazel-skylib-1.7.1.tar.gz",
-    ],
-)
-
-load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
-
-bazel_skylib_workspace()

data/artwork/catch2-c-logo.svg

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data/artwork/catch2-hand-logo.svg

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docs/cmake-integration.md

@@ -52,7 +52,7 @@ Include(FetchContent)
 FetchContent_Declare(
   Catch2
   GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-  GIT_TAG        v3.4.0 # or a later release
+  GIT_TAG        v3.8.1 # or a later release
 )
 
 FetchContent_MakeAvailable(Catch2)
@@ -81,12 +81,11 @@ to your CMake module path.
 
 `Catch.cmake` provides function `catch_discover_tests` to get tests from
 a target. This function works by running the resulting executable with
-`--list-test-names-only` flag, and then parsing the output to find all
-existing tests.
+`--list-test` flag, and then parsing the output to find all existing tests.
 
 #### Usage
 ```cmake
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.16)
 
 project(baz LANGUAGES CXX VERSION 0.0.1)
 
@@ -128,6 +127,8 @@ catch_discover_tests(target
                      [OUTPUT_PREFIX prefix]
                      [OUTPUT_SUFFIX suffix]
                      [DISCOVERY_MODE <POST_BUILD|PRE_TEST>]
+                     [SKIP_IS_FAILURE]
+                     [ADD_TAGS_AS_LABELS]
 )
 ```
 
@@ -211,6 +212,15 @@ execution (useful e.g. in cross-compilation environments).
 calling ``catch_discover_tests``. This provides a mechanism for globally
 selecting a preferred test discovery behavior.
 
+* `SKIP_IS_FAILURE`
+
+Skipped tests will be marked as failed instead.
+
+* `ADD_TAGS_AS_LABELS`
+
+Add the tags from tests as labels to CTest.
+
+
 ### `ParseAndAddCatchTests.cmake`
 
 ⚠ This script is [deprecated](https://github.com/catchorg/Catch2/pull/2120)
@@ -229,7 +239,7 @@ parsed are *silently ignored*.
 #### Usage
 
 ```cmake
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.16)
 
 project(baz LANGUAGES CXX VERSION 0.0.1)
 

docs/command-line.md

@@ -123,7 +123,7 @@ specs. You can:
     This allows test cases that are tagged with **either** "[some-tag]" **or**
     "[other-tag]". A test case with both will obviously also pass the filter.
 
-    Note that commas take precendence over simple concatenation. This means
+    Note that commas take precedence over simple concatenation. This means
     that `[a][b],[c]` accepts tests that are tagged with either both "[a]" and
     "[b]", or tests that are tagged with just "[c]".
 

docs/configuration.md

@@ -158,11 +158,14 @@ by using `_NO_` in the macro, e.g. `CATCH_CONFIG_NO_CPP17_UNCAUGHT_EXCEPTIONS`.
     CATCH_CONFIG_ANDROID_LOGWRITE           // Use android's logging system for debug output
     CATCH_CONFIG_GLOBAL_NEXTAFTER           // Use nextafter{,f,l} instead of std::nextafter
     CATCH_CONFIG_GETENV                     // System has a working `getenv`
+    CATCH_CONFIG_USE_BUILTIN_CONSTANT_P     // Use __builtin_constant_p to trigger warnings
 
 > [`CATCH_CONFIG_ANDROID_LOGWRITE`](https://github.com/catchorg/Catch2/issues/1743) and [`CATCH_CONFIG_GLOBAL_NEXTAFTER`](https://github.com/catchorg/Catch2/pull/1739) were introduced in Catch2 2.10.0
 
 > `CATCH_CONFIG_GETENV` was [introduced](https://github.com/catchorg/Catch2/pull/2562) in Catch2 3.2.0
 
+> `CATCH_CONFIG_USE_BUILTIN_CONSTANT_P` was introduced in Catch2 vX.Y.Z
+
 Currently Catch enables `CATCH_CONFIG_WINDOWS_SEH` only when compiled with MSVC, because some versions of MinGW do not have the necessary Win32 API support.
 
 `CATCH_CONFIG_POSIX_SIGNALS` is on by default, except when Catch is compiled under `Cygwin`, where it is disabled by default (but can be force-enabled by defining `CATCH_CONFIG_POSIX_SIGNALS`).
@@ -183,6 +186,12 @@ With the exception of `CATCH_CONFIG_EXPERIMENTAL_REDIRECT`,
 these toggles can be disabled by using `_NO_` form of the toggle,
 e.g. `CATCH_CONFIG_NO_WINDOWS_SEH`.
 
+`CATCH_CONFIG_USE_BUILTIN_CONSTANT_P` is ON by default for Clang and GCC
+(but as far as possible, not for other compilers masquerading for these
+two). However, it can cause bugs where the enclosed code is evaluated, even
+though it should not be, e.g. in [#2925](https://github.com/catchorg/Catch2/issues/2925).
+
+
 ### `CATCH_CONFIG_FAST_COMPILE`
 This compile-time flag speeds up compilation of assertion macros by ~20%,
 by disabling the generation of assertion-local try-catch blocks for

docs/contributing.md

@@ -107,8 +107,7 @@ cmake -B debug-build -S . -DCMAKE_BUILD_TYPE=Debug --preset all-tests
 cmake --build debug-build
 
 # 4. Run the tests using CTest
-cd debug-build
-ctest -j 4 --output-on-failure -C Debug
+ctest -j 4 --output-on-failure -C Debug --test-dir debug-build
 ```
 <sup><a href='/tools/scripts/buildAndTest.sh#L6-L19' title='File snippet `catch2-build-and-test` was extracted from'>snippet source</a> | <a href='#snippet-catch2-build-and-test' title='Navigate to start of snippet `catch2-build-and-test`'>anchor</a></sup>
 <!-- endSnippet -->

docs/generators.md

@@ -21,7 +21,10 @@ The "Generators" `TEST_CASE` will be entered 3 times, and the value of
 `i` will be 1, 3, and 5 in turn. `GENERATE`s can also be used multiple
 times at the same scope, in which case the result will be a cartesian
 product of all elements in the generators. This means that in the snippet
-below, the test case will be run 6 (2\*3) times.
+below, the test case will be run 6 (2\*3) times. The `GENERATE` macro
+is defined in the `catch_generators.hpp` header, so compiling
+the code examples below also requires
+`#include <catch2/generators/catch_generators.hpp>`.
 
 ```cpp
 TEST_CASE("Generators") {
@@ -103,7 +106,7 @@ a test case,
 * 2 fundamental generators
   * `SingleValueGenerator<T>` -- contains only single element
   * `FixedValuesGenerator<T>` -- contains multiple elements
-* 5 generic generators that modify other generators
+* 5 generic generators that modify other generators (defined in `catch2/generators/catch_generators_adapters.hpp`)
   * `FilterGenerator<T, Predicate>` -- filters out elements from a generator
   for which the predicate returns "false"
   * `TakeGenerator<T>` -- takes first `n` elements from a generator
@@ -111,11 +114,11 @@ a test case,
   * `MapGenerator<T, U, Func>` -- returns the result of applying `Func`
   on elements from a different generator
   * `ChunkGenerator<T>` -- returns chunks (inside `std::vector`) of n elements from a generator
-* 4 specific purpose generators
+* 4 specific purpose generators (defined in `catch2/generators/catch_generators_random.hpp`)
   * `RandomIntegerGenerator<Integral>` -- generates random Integrals from range
   * `RandomFloatGenerator<Float>` -- generates random Floats from range
-  * `RangeGenerator<T>(first, last)` -- generates all values inside a `[first, last)` arithmetic range
-  * `IteratorGenerator<T>` -- copies and returns values from an iterator range
+  * `RangeGenerator<T>(first, last)` -- generates all values inside a `[first, last)` arithmetic range (defined in `catch2/generators/catch_generators_range.hpp`)
+  * `IteratorGenerator<T>` -- copies and returns values from an iterator range (defined in `catch2/generators/catch_generators_range.hpp`)
 
 > `ChunkGenerator<T>`, `RandomIntegerGenerator<Integral>`, `RandomFloatGenerator<Float>` and `RangeGenerator<T>` were introduced in Catch2 2.7.0.
 
@@ -216,8 +219,8 @@ For floating point generators, the situation is much more complex.
 Generally Catch2 only promises reproducibility (or even just correctness!)
 on platforms that obey the IEEE-754 standard. Furthermore, reproducibility
 only applies between binaries that perform floating point math in the
-same way, e.g. if you compile a binary targetting the x87 FPU and another
-one targetting SSE2 for floating point math, their results will vary.
+same way, e.g. if you compile a binary targeting the x87 FPU and another
+one targeting SSE2 for floating point math, their results will vary.
 Similarly, binaries compiled with compiler flags that relax the IEEE-754
 adherence, e.g. `-ffast-math`, might provide different results than those
 compiled for strict IEEE-754 adherence.

docs/own-main.md

@@ -57,17 +57,18 @@ int main( int argc, char* argv[] ) {
 
   int returnCode = session.applyCommandLine( argc, argv );
   if( returnCode != 0 ) // Indicates a command line error
-        return returnCode;
+    return returnCode;
 
   // writing to session.configData() or session.Config() here
   // overrides command line args
   // only do this if you know you need to
 
-  int numFailed = session.run();
+  returnCode = session.run();
+
+  // returnCode encodes the type of error that occured. See the
+  // integer constants in catch_session.hpp for more information
+  // on what each return code means.
 
-  // numFailed is clamped to 255 as some unices only use the lower 8 bits.
-  // This clamping has already been applied, so just return it here
-  // You can also do any post run clean-up here
   return numFailed;
 }
 ```

docs/release-notes.md

@@ -2,6 +2,9 @@
 
 # Release notes
 **Contents**<br>
+[3.8.1](#381)<br>
+[3.8.0](#380)<br>
+[3.7.1](#371)<br>
 [3.7.0](#370)<br>
 [3.6.0](#360)<br>
 [3.5.4](#354)<br>
@@ -64,9 +67,61 @@
 [Even Older versions](#even-older-versions)<br>
 
 
+## 3.8.1
+
+### Fixes
+* Fixed bug where catch_discover_tests fails when no TEST_CASEs are present (#2962)
+* Fixed Clang 19 -Wc++20-extensions warning (#2968)
+
+
+## 3.8.0
+
+### Improvements
+* Added `std::initializer_list` overloads for `(Unordered)RangeEquals` matcher (#2915, #2919)
+* Added explicit casts to silence GCC's `Wconversion` (#2875)
+* Made the use of `builtin_constant_p` tricks in assertion macros configurable (#2925)
+  * It is used to prod GCC-like compilers into providing warnings for the asserted expressions, but the compilers miscompile it annoyingly often.
+* Cleaned out Clang-Tidy's `performance-enum-size` warnings
+* Added support for using `from_range` generator with iterators with `value_type = const T` (#2926)
+  * This is not correct `value_type` typedef, but it is used in the wild and the change does not make the code meaningfully worse.
+
+### Fixes
+* Fixed crash when stringifying pre-1970 (epoch) dates on Windows (#2944)
+
+### Miscellaneous
+* Fixes and improvements for `catch_discover_tests` CMake helper
+  * Removed redundant `CTEST_FILE` param when creating the indirection file for `PRE_TEST` discovery mode (#2936)
+  * Rewrote the test discovery logic to use output from the JSON reporter
+    * This means that `catch_discover_tests` now requires CMake 3.19 or newer
+  * Added `ADD_TAGS_AS_LABELS` option. If specified, each CTest test will be labeled with corresponding Catch2's test tag
+* Bumped up the minimum required CMake version to build Catch2 to 3.16
+* Meson build now provides option to avoid installing Catch2
+* Bazel build is moved to Bzlmod.
+
+
+## 3.7.1
+
+### Improvements
+* Applied the JUnit reporter's optimization from last release to the SonarQube reporter
+* Suppressed `-Wuseless-cast` in `CHECK_THROWS_MATCHES` (#2904)
+* Standardize exit codes for various failures
+  * Running no tests is now guaranteed to exit with 2 (without the `--allow-running-no-tests` flag)
+  * All tests skipped is now always 4 (...)
+  * Assertion failures are now always 42
+  * and so on
+
+### Fixes
+* Fixed out-of-bounds access when the arg parser encounters single `-` as an argument (#2905)
+
+### Miscellaneous
+* Added `catch_config_prefix_messages.hpp` to meson build (#2903)
+* `catch_discover_tests` now supports skipped tests (#2873)
+  * You can get the old behaviour by calling `catch_discover_tests` with `SKIP_IS_FAILURE` option.
+
+
 ## 3.7.0
 
-### improvements
+### Improvements
 * Slightly improved compile times of benchmarks
 * Made the resolution estimation in benchmarks slightly more precise
 * Added new test case macro, `TEST_CASE_PERSISTENT_FIXTURE` (#2885, #1602)
@@ -120,7 +175,7 @@
 ### Improvements
 * Reintroduced support for GCC 5 and 6 (#2836)
   * As with VS2017, if they start causing trouble again, they will be dropped again.
-* Added workaround for targetting newest MacOS (Sonoma) using GCC (#2837, #2839)
+* Added workaround for targeting newest MacOS (Sonoma) using GCC (#2837, #2839)
 * `CATCH_CONFIG_DEFAULT_REPORTER` can now be an arbitrary reporter spec
   * Previously it could only be a plain reporter name, so it was impossible to compile in custom arguments to the reporter.
 * Improved performance of generating 64bit random integers by 20+%

docs/reporters.md

@@ -154,7 +154,7 @@ and calls itself "partial" reporter, so it can be invoked with
 
 Each reporter instance contains instance of `ReporterPreferences`, a type
 that holds flags for the behaviour of Catch2 when this reporter run.
-Currently there are two customization options:
+Currently there are three customization options:
 
 * `shouldRedirectStdOut` - whether the reporter wants to handle
    writes to stdout/stderr from user code, or not. This is useful for
@@ -165,6 +165,11 @@ Currently there are two customization options:
    assertions. Usually reporters do not report successful assertions
    and don't need them for their output, but sometimes the desired output
    format includes passing assertions even without the `-s` flag.
+* `shouldReportAllAssertionStarts` - whether the reporter wants to handle
+  `assertionStarting` events. Most reporters do not, and opting out
+   explicitly enables a fast-path in Catch2's handling of assertions.
+
+> `shouldReportAllAssertionStarts` was introduced in Catch2 X.Y.Z
 
 
 ### Per-reporter configuration

docs/test-fixtures.md

@@ -130,7 +130,7 @@ TEST_CASE_PERSISTENT_FIXTURE( MyFixture, "Tests with MyFixture" ) {
 }
 ```
 
-This example demonstates two possible use-cases of this fixture type:
+This example demonstrates two possible use-cases of this fixture type:
 1. Improve test run times by reducing the amount of expensive and 
 redundant setup and tear-down required.
 2. Reusing results from the previous partial run, in the current

docs/tostring.md

@@ -75,7 +75,7 @@ CATCH_TRANSLATE_EXCEPTION( MyType const& ex ) {
 
 Enums that already have a `<<` overload for `std::ostream` will convert to strings as expected.
 If you only need to convert enums to strings for test reporting purposes you can provide a `StringMaker` specialisations as any other type.
-However, as a convenience, Catch provides the `REGISTER_ENUM` helper macro that will generate the `StringMaker` specialisation for you with minimal code.
+However, as a convenience, Catch provides the `CATCH_REGISTER_ENUM` helper macro that will generate the `StringMaker` specialisation for you with minimal code.
 Simply provide it the (qualified) enum name, followed by all the enum values, and you're done!
 
 E.g.

examples/210-Evt-EventListeners.cpp

@@ -307,7 +307,7 @@ void print( std::ostream& os, int const level, std::string const& title, Catch::
 // 2. My listener and registration:
 //
 
-char const * dashed_line =
+char const * const dashed_line =
     "--------------------------------------------------------------------------";
 
 

examples/CMakeLists.txt

@@ -1,50 +1,47 @@
-cmake_minimum_required( VERSION 3.10 )
-
-project( Catch2Examples LANGUAGES CXX )
-
-message( STATUS "Examples included" )
+cmake_minimum_required(VERSION 3.16)
+project(Catch2Examples LANGUAGES CXX)
 
+message(STATUS "Examples included")
 
 # Some one-offs first:
 # 1) Tests and main in one file
-add_executable( 010-TestCase
+add_executable(010-TestCase
   010-TestCase.cpp
 )
 
 # 2) Tests and main across two files
-add_executable( 020-MultiFile
+add_executable(020-MultiFile
   020-TestCase-1.cpp
   020-TestCase-2.cpp
 )
 
 add_executable(231-Cfg_OutputStreams
-    231-Cfg-OutputStreams.cpp
+  231-Cfg-OutputStreams.cpp
 )
 target_link_libraries(231-Cfg_OutputStreams Catch2_buildall_interface)
 target_compile_definitions(231-Cfg_OutputStreams PUBLIC CATCH_CONFIG_NOSTDOUT)
 
 # These examples use the standard separate compilation
-set( SOURCES_IDIOMATIC_EXAMPLES
-    030-Asn-Require-Check.cpp
-    100-Fix-Section.cpp
-    110-Fix-ClassFixture.cpp
-    111-Fix-PersistentFixture.cpp
-    120-Bdd-ScenarioGivenWhenThen.cpp
-    210-Evt-EventListeners.cpp
-    232-Cfg-CustomMain.cpp
-    300-Gen-OwnGenerator.cpp
-    301-Gen-MapTypeConversion.cpp
-    302-Gen-Table.cpp
-    310-Gen-VariablesInGenerators.cpp
-    311-Gen-CustomCapture.cpp
+set(SOURCES_IDIOMATIC_EXAMPLES
+  030-Asn-Require-Check.cpp
+  100-Fix-Section.cpp
+  110-Fix-ClassFixture.cpp
+  111-Fix-PersistentFixture.cpp
+  120-Bdd-ScenarioGivenWhenThen.cpp
+  210-Evt-EventListeners.cpp
+  232-Cfg-CustomMain.cpp
+  300-Gen-OwnGenerator.cpp
+  301-Gen-MapTypeConversion.cpp
+  302-Gen-Table.cpp
+  310-Gen-VariablesInGenerators.cpp
+  311-Gen-CustomCapture.cpp
 )
 
-string( REPLACE ".cpp" "" BASENAMES_IDIOMATIC_EXAMPLES "${SOURCES_IDIOMATIC_EXAMPLES}" )
-set( TARGETS_IDIOMATIC_EXAMPLES ${BASENAMES_IDIOMATIC_EXAMPLES} )
+string(REPLACE ".cpp" "" BASENAMES_IDIOMATIC_EXAMPLES "${SOURCES_IDIOMATIC_EXAMPLES}")
+set(TARGETS_IDIOMATIC_EXAMPLES ${BASENAMES_IDIOMATIC_EXAMPLES})
 
-
-foreach( name ${TARGETS_IDIOMATIC_EXAMPLES} )
-    add_executable( ${name} ${name}.cpp )
+foreach(name ${TARGETS_IDIOMATIC_EXAMPLES})
+  add_executable(${name} ${name}.cpp)
 endforeach()
 
 set(ALL_EXAMPLE_TARGETS
@@ -53,10 +50,9 @@ set(ALL_EXAMPLE_TARGETS
   020-MultiFile
 )
 
-foreach( name ${ALL_EXAMPLE_TARGETS} )
-    target_link_libraries( ${name} Catch2WithMain )
+foreach(name ${ALL_EXAMPLE_TARGETS})
+  target_link_libraries(${name} Catch2WithMain)
 endforeach()
 
-
-list(APPEND CATCH_WARNING_TARGETS ${ALL_EXAMPLE_TARGETS})
-set(CATCH_WARNING_TARGETS ${CATCH_WARNING_TARGETS} PARENT_SCOPE)
+list(APPEND CATCH_TEST_TARGETS ${ALL_EXAMPLE_TARGETS})
+set(CATCH_TEST_TARGETS ${CATCH_TEST_TARGETS} PARENT_SCOPE)

extras/Catch.cmake

@@ -38,6 +38,8 @@ same as the Catch name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
                          [OUTPUT_PREFIX prefix]
                          [OUTPUT_SUFFIX suffix]
                          [DISCOVERY_MODE <POST_BUILD|PRE_TEST>]
+                         [SKIP_IS_FAILURE]
+                         [ADD_TAGS_AS_LABELS]
     )
 
   ``catch_discover_tests`` sets up a post-build command on the test executable
@@ -131,7 +133,7 @@ same as the Catch name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
     of test cases from the test executable and when the tests are executed themselves.
     This requires cmake/ctest >= 3.22.
 
-  `DISCOVERY_MODE mode``
+  ``DISCOVERY_MODE mode``
     Provides control over when ``catch_discover_tests`` performs test discovery.
     By default, ``POST_BUILD`` sets up a post-build command to perform test discovery
     at build time. In certain scenarios, like cross-compiling, this ``POST_BUILD``
@@ -144,6 +146,12 @@ same as the Catch name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
     calling ``catch_discover_tests``. This provides a mechanism for globally selecting
     a preferred test discovery behavior without having to modify each call site.
 
+  ``SKIP_IS_FAILURE``
+    Disables skipped test detection.
+
+  ``ADD_TAGS_AS_LABELS``
+    Adds all test tags as CTest labels.
+
 #]=======================================================================]
 
 #------------------------------------------------------------------------------
@@ -151,12 +159,16 @@ function(catch_discover_tests TARGET)
 
   cmake_parse_arguments(
     ""
-    ""
+    "SKIP_IS_FAILURE;ADD_TAGS_AS_LABELS"
     "TEST_PREFIX;TEST_SUFFIX;WORKING_DIRECTORY;TEST_LIST;REPORTER;OUTPUT_DIR;OUTPUT_PREFIX;OUTPUT_SUFFIX;DISCOVERY_MODE"
     "TEST_SPEC;EXTRA_ARGS;PROPERTIES;DL_PATHS;DL_FRAMEWORK_PATHS"
     ${ARGN}
   )
 
+  if(${CMAKE_VERSION} VERSION_LESS "3.19")
+    message(FATAL_ERROR "This script requires JSON support from CMake version 3.19 or greater.")
+  endif()
+
   if(NOT _WORKING_DIRECTORY)
     set(_WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
   endif()
@@ -175,7 +187,7 @@ function(catch_discover_tests TARGET)
     endif()
     set(_DISCOVERY_MODE ${CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE})
   endif()
-  if (NOT _DISCOVERY_MODE MATCHES "^(POST_BUILD|PRE_TEST)$")
+  if(NOT _DISCOVERY_MODE MATCHES "^(POST_BUILD|PRE_TEST)$")
     message(FATAL_ERROR "Unknown DISCOVERY_MODE: ${_DISCOVERY_MODE}")
   endif()
 
@@ -192,6 +204,9 @@ function(catch_discover_tests TARGET)
     TARGET ${TARGET}
     PROPERTY CROSSCOMPILING_EMULATOR
   )
+  if(NOT _SKIP_IS_FAILURE)
+    set(_PROPERTIES ${_PROPERTIES} SKIP_RETURN_CODE 4)
+  endif()
 
   if(_DISCOVERY_MODE STREQUAL "POST_BUILD")
     add_custom_command(
@@ -215,6 +230,7 @@ function(catch_discover_tests TARGET)
               -D "TEST_DL_PATHS=${_DL_PATHS}"
               -D "TEST_DL_FRAMEWORK_PATHS=${_DL_FRAMEWORK_PATHS}"
               -D "CTEST_FILE=${ctest_tests_file}"
+              -D "ADD_TAGS_AS_LABELS=${_ADD_TAGS_AS_LABELS}"
               -P "${_CATCH_DISCOVER_TESTS_SCRIPT}"
       VERBATIM
     )
@@ -260,7 +276,7 @@ function(catch_discover_tests TARGET)
       "      CTEST_FILE"             " [==[" "${ctest_tests_file}"        "]==]"   "\n"
       "      TEST_DL_PATHS"          " [==[" "${_DL_PATHS}"               "]==]"   "\n"
       "      TEST_DL_FRAMEWORK_PATHS" " [==[" "${_DL_FRAMEWORK_PATHS}"     "]==]"   "\n"
-      "      CTEST_FILE"             " [==[" "${CTEST_FILE}"              "]==]"   "\n"
+      "      ADD_TAGS_AS_LABELS"     " [==[" "${_ADD_TAGS_AS_LABELS}"     "]==]"   "\n"
       "    )"                                                                      "\n"
       "  endif()"                                                                  "\n"
       "  include(\"${ctest_tests_file}\")"                                         "\n"
@@ -287,22 +303,10 @@ function(catch_discover_tests TARGET)
     endif()
   endif()
 
-  if(NOT ${CMAKE_VERSION} VERSION_LESS "3.10.0")
-    # Add discovered tests to directory TEST_INCLUDE_FILES
-    set_property(DIRECTORY
-      APPEND PROPERTY TEST_INCLUDE_FILES "${ctest_include_file}"
-    )
-  else()
-    # Add discovered tests as directory TEST_INCLUDE_FILE if possible
-    get_property(test_include_file_set DIRECTORY PROPERTY TEST_INCLUDE_FILE SET)
-    if (NOT ${test_include_file_set})
-      set_property(DIRECTORY
-        PROPERTY TEST_INCLUDE_FILE "${ctest_include_file}"
-      )
-    else()
-      message(FATAL_ERROR "Cannot set more than one TEST_INCLUDE_FILE")
-    endif()
-  endif()
+  # Add discovered tests to directory TEST_INCLUDE_FILES
+  set_property(DIRECTORY
+    APPEND PROPERTY TEST_INCLUDE_FILES "${ctest_include_file}"
+  )
 
 endfunction()
 

extras/CatchAddTests.cmake

@@ -22,10 +22,11 @@ function(catch_discover_tests_impl)
     ""
     ""
     "TEST_EXECUTABLE;TEST_WORKING_DIR;TEST_OUTPUT_DIR;TEST_OUTPUT_PREFIX;TEST_OUTPUT_SUFFIX;TEST_PREFIX;TEST_REPORTER;TEST_SPEC;TEST_SUFFIX;TEST_LIST;CTEST_FILE"
-    "TEST_EXTRA_ARGS;TEST_PROPERTIES;TEST_EXECUTOR;TEST_DL_PATHS;TEST_DL_FRAMEWORK_PATHS"
+    "TEST_EXTRA_ARGS;TEST_PROPERTIES;TEST_EXECUTOR;TEST_DL_PATHS;TEST_DL_FRAMEWORK_PATHS;ADD_TAGS_AS_LABELS"
     ${ARGN}
   )
 
+  set(add_tags "${_ADD_TAGS_AS_LABELS}")
   set(prefix "${_TEST_PREFIX}")
   set(suffix "${_TEST_SUFFIX}")
   set(spec ${_TEST_SPEC})
@@ -72,25 +73,19 @@ function(catch_discover_tests_impl)
   endif()
 
   execute_process(
-    COMMAND ${_TEST_EXECUTOR} "${_TEST_EXECUTABLE}" ${spec} --list-tests --verbosity quiet
-    OUTPUT_VARIABLE output
+    COMMAND ${_TEST_EXECUTOR} "${_TEST_EXECUTABLE}" ${spec} --list-tests --reporter json
+    OUTPUT_VARIABLE listing_output
     RESULT_VARIABLE result
     WORKING_DIRECTORY "${_TEST_WORKING_DIR}"
   )
   if(NOT ${result} EQUAL 0)
     message(FATAL_ERROR
-      "Error running test executable '${_TEST_EXECUTABLE}':\n"
+      "Error listing tests from executable '${_TEST_EXECUTABLE}':\n"
       "  Result: ${result}\n"
-      "  Output: ${output}\n"
+      "  Output: ${listing_output}\n"
     )
   endif()
 
-  # Make sure to escape ; (semicolons) in test names first, because
-  # that'd break the foreach loop for "Parse output" later and create
-  # wrongly splitted and thus failing test cases (false positives)
-  string(REPLACE ";" "\;" output "${output}")
-  string(REPLACE "\n" ";" output "${output}")
-
   # Prepare reporter
   if(reporter)
     set(reporter_arg "--reporter ${reporter}")
@@ -110,7 +105,7 @@ function(catch_discover_tests_impl)
       )
     elseif(NOT ${reporter_check_result} EQUAL 0)
       message(FATAL_ERROR
-        "Error running test executable '${_TEST_EXECUTABLE}':\n"
+        "Error checking for reporter in test executable '${_TEST_EXECUTABLE}':\n"
         "  Result: ${reporter_check_result}\n"
         "  Output: ${reporter_check_output}\n"
       )
@@ -139,46 +134,92 @@ function(catch_discover_tests_impl)
     endforeach()
   endif()
 
-  # Parse output
-  foreach(line ${output})
-    set(test "${line}")
+  # Parse JSON output for list of tests/class names/tags
+  string(JSON version GET "${listing_output}" "version")
+  if(NOT version STREQUAL "1")
+    message(FATAL_ERROR "Unsupported catch output version: '${version}'")
+  endif()
+
+  # Speed-up reparsing by cutting away unneeded parts of JSON.
+  string(JSON test_listing GET "${listing_output}" "listings" "tests")
+  string(JSON num_tests LENGTH "${test_listing}")
+
+  # Exit early if no tests are detected
+  if(num_tests STREQUAL "0")
+    return()
+  endif()
+
+  # CMake's foreach-RANGE is inclusive, so we have to subtract 1
+  math(EXPR num_tests "${num_tests} - 1")
+
+  foreach(idx RANGE ${num_tests})
+    string(JSON single_test GET ${test_listing} ${idx})
+    string(JSON test_tags GET "${single_test}" "tags")
+    string(JSON plain_name GET "${single_test}" "name")
+
     # Escape characters in test case names that would be parsed by Catch2
     # Note that the \ escaping must happen FIRST! Do not change the order.
-    set(test_name "${test}")
-    foreach(char \\ , [ ])
-      string(REPLACE ${char} "\\${char}" test_name "${test_name}")
+    set(escaped_name "${plain_name}")
+    foreach(char \\ , [ ] ;)
+      string(REPLACE ${char} "\\${char}" escaped_name "${escaped_name}")
     endforeach(char)
     # ...add output dir
     if(output_dir)
-      string(REGEX REPLACE "[^A-Za-z0-9_]" "_" test_name_clean "${test_name}")
-      set(output_dir_arg "--out ${output_dir}/${output_prefix}${test_name_clean}${output_suffix}")
+      string(REGEX REPLACE "[^A-Za-z0-9_]" "_" escaped_name_clean "${escaped_name}")
+      set(output_dir_arg "--out ${output_dir}/${output_prefix}${escaped_name_clean}${output_suffix}")
     endif()
 
     # ...and add to script
     add_command(add_test
-      "${prefix}${test}${suffix}"
+      "${prefix}${plain_name}${suffix}"
       ${_TEST_EXECUTOR}
       "${_TEST_EXECUTABLE}"
-      "${test_name}"
+      "${escaped_name}"
       ${extra_args}
       "${reporter_arg}"
       "${output_dir_arg}"
     )
     add_command(set_tests_properties
-      "${prefix}${test}${suffix}"
+      "${prefix}${plain_name}${suffix}"
       PROPERTIES
       WORKING_DIRECTORY "${_TEST_WORKING_DIR}"
       ${properties}
     )
 
+    if(add_tags)
+      string(JSON num_tags LENGTH "${test_tags}")
+      math(EXPR num_tags "${num_tags} - 1")
+      set(tag_list "")
+      if(num_tags GREATER_EQUAL "0")
+        foreach(tag_idx RANGE ${num_tags})
+          string(JSON a_tag GET "${test_tags}" "${tag_idx}")
+          # Catch2's tags can contain semicolons, which are list element separators
+          # in CMake, so we have to escape them. Ideally we could use the [=[...]=]
+          # syntax for this, but CTest currently keeps the square quotes in the label
+          # name. So we add 2 backslashes to escape it instead.
+          # **IMPORTANT**: The number of backslashes depends on how many layers
+          #                of CMake the tag goes. If this script is changed, the
+          #                number of backslashes to escape may change as well.
+          string(REPLACE ";" "\\;" a_tag "${a_tag}")
+          list(APPEND tag_list "${a_tag}")
+        endforeach()
+
+        add_command(set_tests_properties
+          "${prefix}${plain_name}${suffix}"
+          PROPERTIES
+          LABELS "${tag_list}"
+        )
+      endif()
+    endif(add_tags)
+
     if(environment_modifications)
       add_command(set_tests_properties
-        "${prefix}${test}${suffix}"
+        "${prefix}${plain_name}${suffix}"
         PROPERTIES
         ENVIRONMENT_MODIFICATION "${environment_modifications}")
     endif()
 
-    list(APPEND tests "${prefix}${test}${suffix}")
+    list(APPEND tests "${prefix}${plain_name}${suffix}")
   endforeach()
 
   # Create a list of all discovered tests, which users may use to e.g. set
@@ -207,5 +248,6 @@ if(CMAKE_SCRIPT_MODE_FILE)
     TEST_DL_PATHS ${TEST_DL_PATHS}
     TEST_DL_FRAMEWORK_PATHS ${TEST_DL_FRAMEWORK_PATHS}
     CTEST_FILE ${CTEST_FILE}
+    ADD_TAGS_AS_LABELS ${ADD_TAGS_AS_LABELS}
   )
 endif()

extras/CatchShardTests.cmake

@@ -11,7 +11,7 @@
 #  * REPORTER    - reporter spec to use for tests
 #  * TEST_SPEC   - test spec used for filtering tests
 function(catch_add_sharded_tests TARGET)
-  if (${CMAKE_VERSION} VERSION_LESS "3.10.0")
+  if(${CMAKE_VERSION} VERSION_LESS "3.10.0")
     message(FATAL_ERROR "add_sharded_catch_tests only supports CMake versions 3.10.0 and up")
   endif()
 
@@ -23,7 +23,7 @@ function(catch_add_sharded_tests TARGET)
     ${ARGN}
   )
   
-  if (NOT DEFINED _SHARD_COUNT)
+  if(NOT DEFINED _SHARD_COUNT)
     set(_SHARD_COUNT 2)
   endif()
 
@@ -61,8 +61,6 @@ function(catch_add_sharded_tests TARGET)
             -P "${shard_impl_script_file}"
     VERBATIM
   )
-
-
 endfunction()
 
 

extras/CatchShardTestsImpl.cmake

@@ -25,10 +25,10 @@ if(NOT EXISTS "${TEST_BINARY}")
 endif()
 
 set(other_args "")
-if (TEST_SPEC)
+if(TEST_SPEC)
   set(other_args "${other_args} ${TEST_SPEC}")
 endif()
-if (REPORTER_SPEC)
+if(REPORTER_SPEC)
   set(other_args "${other_args} --reporter ${REPORTER_SPEC}")
 endif()
 

extras/ParseAndAddCatchTests.cmake

@@ -56,7 +56,7 @@
 #                                                                                                  #
 #==================================================================================================#
 
-if (CMAKE_MINIMUM_REQUIRED_VERSION VERSION_LESS 2.8.8)
+if(CMAKE_MINIMUM_REQUIRED_VERSION VERSION_LESS 2.8.8)
   message(FATAL_ERROR "ParseAndAddCatchTests requires CMake 2.8.8 or newer")
 endif()
 
@@ -67,9 +67,9 @@ option(PARSE_CATCH_TESTS_ADD_TARGET_IN_TEST_NAME "Add target name to the test na
 option(PARSE_CATCH_TESTS_ADD_TO_CONFIGURE_DEPENDS "Add test file to CMAKE_CONFIGURE_DEPENDS property" OFF)
 
 function(ParseAndAddCatchTests_PrintDebugMessage)
-    if(PARSE_CATCH_TESTS_VERBOSE)
-            message(STATUS "ParseAndAddCatchTests: ${ARGV}")
-    endif()
+  if(PARSE_CATCH_TESTS_VERBOSE)
+    message(STATUS "ParseAndAddCatchTests: ${ARGV}")
+  endif()
 endfunction()
 
 # This removes the contents between
@@ -90,163 +90,161 @@ endfunction()
 
 # Worker function
 function(ParseAndAddCatchTests_ParseFile SourceFile TestTarget)
-    # If SourceFile is an object library, do not scan it (as it is not a file). Exit without giving a warning about a missing file.
-    if(SourceFile MATCHES "\\\$<TARGET_OBJECTS:.+>")
-        ParseAndAddCatchTests_PrintDebugMessage("Detected OBJECT library: ${SourceFile} this will not be scanned for tests.")
-        return()
-    endif()
-    # According to CMake docs EXISTS behavior is well-defined only for full paths.
-    get_filename_component(SourceFile ${SourceFile} ABSOLUTE)
-    if(NOT EXISTS ${SourceFile})
-        message(WARNING "Cannot find source file: ${SourceFile}")
-        return()
-    endif()
-    ParseAndAddCatchTests_PrintDebugMessage("parsing ${SourceFile}")
-    file(STRINGS ${SourceFile} Contents NEWLINE_CONSUME)
+  # If SourceFile is an object library, do not scan it (as it is not a file). Exit without giving a warning about a missing file.
+  if(SourceFile MATCHES "\\\$<TARGET_OBJECTS:.+>")
+    ParseAndAddCatchTests_PrintDebugMessage("Detected OBJECT library: ${SourceFile} this will not be scanned for tests.")
+    return()
+  endif()
+  # According to CMake docs EXISTS behavior is well-defined only for full paths.
+  get_filename_component(SourceFile ${SourceFile} ABSOLUTE)
+  if(NOT EXISTS ${SourceFile})
+    message(WARNING "Cannot find source file: ${SourceFile}")
+    return()
+  endif()
+  ParseAndAddCatchTests_PrintDebugMessage("parsing ${SourceFile}")
+  file(STRINGS ${SourceFile} Contents NEWLINE_CONSUME)
 
-    # Remove block and fullline comments
-    ParseAndAddCatchTests_RemoveComments(Contents)
+  # Remove block and fullline comments
+  ParseAndAddCatchTests_RemoveComments(Contents)
 
-    # Find definition of test names
-    # https://regex101.com/r/JygOND/1
-    string(REGEX MATCHALL "[ \t]*(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)[ \t]*\\([ \t\n]*\"[^\"]*\"[ \t\n]*(,[ \t\n]*\"[^\"]*\")?(,[ \t\n]*[^\,\)]*)*\\)[ \t\n]*\{+[ \t]*(//[^\n]*[Tt][Ii][Mm][Ee][Oo][Uu][Tt][ \t]*[0-9]+)*" Tests "${Contents}")
+  # Find definition of test names
+  # https://regex101.com/r/JygOND/1
+  string(REGEX MATCHALL "[ \t]*(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)[ \t]*\\([ \t\n]*\"[^\"]*\"[ \t\n]*(,[ \t\n]*\"[^\"]*\")?(,[ \t\n]*[^\,\)]*)*\\)[ \t\n]*\{+[ \t]*(//[^\n]*[Tt][Ii][Mm][Ee][Oo][Uu][Tt][ \t]*[0-9]+)*" Tests "${Contents}")
 
-    if(PARSE_CATCH_TESTS_ADD_TO_CONFIGURE_DEPENDS AND Tests)
-      ParseAndAddCatchTests_PrintDebugMessage("Adding ${SourceFile} to CMAKE_CONFIGURE_DEPENDS property")
-      set_property(
-        DIRECTORY
-        APPEND
-        PROPERTY CMAKE_CONFIGURE_DEPENDS ${SourceFile}
-      )
+  if(PARSE_CATCH_TESTS_ADD_TO_CONFIGURE_DEPENDS AND Tests)
+    ParseAndAddCatchTests_PrintDebugMessage("Adding ${SourceFile} to CMAKE_CONFIGURE_DEPENDS property")
+    set_property(
+      DIRECTORY
+      APPEND
+      PROPERTY CMAKE_CONFIGURE_DEPENDS ${SourceFile}
+    )
+  endif()
+
+  # check CMP0110 policy for new add_test() behavior
+  if(POLICY CMP0110)
+    cmake_policy(GET CMP0110 _cmp0110_value) # new add_test() behavior
+  else()
+    # just to be thorough explicitly set the variable
+    set(_cmp0110_value)
+  endif()
+
+  foreach(TestName ${Tests})
+    # Strip newlines
+    string(REGEX REPLACE "\\\\\n|\n" "" TestName "${TestName}")
+
+    # Get test type and fixture if applicable
+    string(REGEX MATCH "(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)[ \t]*\\([^,^\"]*" TestTypeAndFixture "${TestName}")
+    string(REGEX MATCH "(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)" TestType "${TestTypeAndFixture}")
+    string(REGEX REPLACE "${TestType}\\([ \t]*" "" TestFixture "${TestTypeAndFixture}")
+
+    # Get string parts of test definition
+    string(REGEX MATCHALL "\"+([^\\^\"]|\\\\\")+\"+" TestStrings "${TestName}")
+
+    # Strip wrapping quotation marks
+    string(REGEX REPLACE "^\"(.*)\"$" "\\1" TestStrings "${TestStrings}")
+    string(REPLACE "\";\"" ";" TestStrings "${TestStrings}")
+
+    # Validate that a test name and tags have been provided
+    list(LENGTH TestStrings TestStringsLength)
+    if(TestStringsLength GREATER 2 OR TestStringsLength LESS 1)
+      message(FATAL_ERROR "You must provide a valid test name and tags for all tests in ${SourceFile}")
     endif()
 
-    # check CMP0110 policy for new add_test() behavior
-    if(POLICY CMP0110)
-        cmake_policy(GET CMP0110 _cmp0110_value) # new add_test() behavior
+    # Assign name and tags
+    list(GET TestStrings 0 Name)
+    if("${TestType}" STREQUAL "SCENARIO")
+      set(Name "Scenario: ${Name}")
+    endif()
+    if(PARSE_CATCH_TESTS_ADD_FIXTURE_IN_TEST_NAME AND "${TestType}" MATCHES "(CATCH_)?TEST_CASE_METHOD" AND TestFixture)
+      set(CTestName "${TestFixture}:${Name}")
     else()
-        # just to be thorough explicitly set the variable
-        set(_cmp0110_value)
+      set(CTestName "${Name}")
+    endif()
+    if(PARSE_CATCH_TESTS_ADD_TARGET_IN_TEST_NAME)
+      set(CTestName "${TestTarget}:${CTestName}")
+    endif()
+    # add target to labels to enable running all tests added from this target
+    set(Labels ${TestTarget})
+    if(TestStringsLength EQUAL 2)
+      list(GET TestStrings 1 Tags)
+      string(TOLOWER "${Tags}" Tags)
+      # remove target from labels if the test is hidden
+      if("${Tags}" MATCHES ".*\\[!?(hide|\\.)\\].*")
+        list(REMOVE_ITEM Labels ${TestTarget})
+      endif()
+      string(REPLACE "]" ";" Tags "${Tags}")
+      string(REPLACE "[" "" Tags "${Tags}")
+    else()
+      # unset tags variable from previous loop
+      unset(Tags)
     endif()
 
-    foreach(TestName ${Tests})
-        # Strip newlines
-        string(REGEX REPLACE "\\\\\n|\n" "" TestName "${TestName}")
+    list(APPEND Labels ${Tags})
 
-        # Get test type and fixture if applicable
-        string(REGEX MATCH "(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)[ \t]*\\([^,^\"]*" TestTypeAndFixture "${TestName}")
-        string(REGEX MATCH "(CATCH_)?(TEMPLATE_)?(TEST_CASE_METHOD|SCENARIO|TEST_CASE)" TestType "${TestTypeAndFixture}")
-        string(REGEX REPLACE "${TestType}\\([ \t]*" "" TestFixture "${TestTypeAndFixture}")
+    set(HiddenTagFound OFF)
+    foreach(label ${Labels})
+      string(REGEX MATCH "^!hide|^\\." result ${label})
+      if(result)
+        set(HiddenTagFound ON)
+        break()
+      endif()
+    endforeach(label)
+    if(PARSE_CATCH_TESTS_NO_HIDDEN_TESTS AND ${HiddenTagFound} AND ${CMAKE_VERSION} VERSION_LESS "3.9")
+      ParseAndAddCatchTests_PrintDebugMessage("Skipping test \"${CTestName}\" as it has [!hide], [.] or [.foo] label")
+    else()
+      ParseAndAddCatchTests_PrintDebugMessage("Adding test \"${CTestName}\"")
+      if(Labels)
+        ParseAndAddCatchTests_PrintDebugMessage("Setting labels to ${Labels}")
+      endif()
 
-        # Get string parts of test definition
-        string(REGEX MATCHALL "\"+([^\\^\"]|\\\\\")+\"+" TestStrings "${TestName}")
+      # Escape commas in the test spec
+      string(REPLACE "," "\\," Name ${Name})
 
-        # Strip wrapping quotation marks
-        string(REGEX REPLACE "^\"(.*)\"$" "\\1" TestStrings "${TestStrings}")
-        string(REPLACE "\";\"" ";" TestStrings "${TestStrings}")
+      # Work around CMake 3.18.0 change in `add_test()`, before the escaped quotes were necessary,
+      # only with CMake 3.18.0 the escaped double quotes confuse the call. This change is reverted in 3.18.1
+      # And properly introduced in 3.19 with the CMP0110 policy
+      if(_cmp0110_value STREQUAL "NEW" OR ${CMAKE_VERSION} VERSION_EQUAL "3.18")
+        ParseAndAddCatchTests_PrintDebugMessage("CMP0110 set to NEW, no need for add_test(\"\") workaround")
+      else()
+        ParseAndAddCatchTests_PrintDebugMessage("CMP0110 set to OLD adding \"\" for add_test() workaround")
+        set(CTestName "\"${CTestName}\"")
+      endif()
 
-        # Validate that a test name and tags have been provided
-        list(LENGTH TestStrings TestStringsLength)
-        if(TestStringsLength GREATER 2 OR TestStringsLength LESS 1)
-            message(FATAL_ERROR "You must provide a valid test name and tags for all tests in ${SourceFile}")
-        endif()
+      # Handle template test cases
+      if("${TestTypeAndFixture}" MATCHES ".*TEMPLATE_.*")
+        set(Name "${Name} - *")
+      endif()
 
-        # Assign name and tags
-        list(GET TestStrings 0 Name)
-        if("${TestType}" STREQUAL "SCENARIO")
-            set(Name "Scenario: ${Name}")
-        endif()
-        if(PARSE_CATCH_TESTS_ADD_FIXTURE_IN_TEST_NAME AND "${TestType}" MATCHES "(CATCH_)?TEST_CASE_METHOD" AND TestFixture )
-            set(CTestName "${TestFixture}:${Name}")
-        else()
-            set(CTestName "${Name}")
-        endif()
-        if(PARSE_CATCH_TESTS_ADD_TARGET_IN_TEST_NAME)
-            set(CTestName "${TestTarget}:${CTestName}")
-        endif()
-        # add target to labels to enable running all tests added from this target
-        set(Labels ${TestTarget})
-        if(TestStringsLength EQUAL 2)
-            list(GET TestStrings 1 Tags)
-            string(TOLOWER "${Tags}" Tags)
-            # remove target from labels if the test is hidden
-            if("${Tags}" MATCHES ".*\\[!?(hide|\\.)\\].*")
-                list(REMOVE_ITEM Labels ${TestTarget})
-            endif()
-            string(REPLACE "]" ";" Tags "${Tags}")
-            string(REPLACE "[" "" Tags "${Tags}")
-        else()
-          # unset tags variable from previous loop
-          unset(Tags)
-        endif()
-
-        list(APPEND Labels ${Tags})
-
-        set(HiddenTagFound OFF)
-        foreach(label ${Labels})
-            string(REGEX MATCH "^!hide|^\\." result ${label})
-            if(result)
-                set(HiddenTagFound ON)
-                break()
-            endif()
-        endforeach(label)
-        if(PARSE_CATCH_TESTS_NO_HIDDEN_TESTS AND ${HiddenTagFound} AND ${CMAKE_VERSION} VERSION_LESS "3.9")
-            ParseAndAddCatchTests_PrintDebugMessage("Skipping test \"${CTestName}\" as it has [!hide], [.] or [.foo] label")
-        else()
-            ParseAndAddCatchTests_PrintDebugMessage("Adding test \"${CTestName}\"")
-            if(Labels)
-                ParseAndAddCatchTests_PrintDebugMessage("Setting labels to ${Labels}")
-            endif()
-
-            # Escape commas in the test spec
-            string(REPLACE "," "\\," Name ${Name})
-
-            # Work around CMake 3.18.0 change in `add_test()`, before the escaped quotes were necessary,
-            # only with CMake 3.18.0 the escaped double quotes confuse the call. This change is reverted in 3.18.1
-            # And properly introduced in 3.19 with the CMP0110 policy
-            if(_cmp0110_value STREQUAL "NEW" OR ${CMAKE_VERSION} VERSION_EQUAL "3.18")
-                ParseAndAddCatchTests_PrintDebugMessage("CMP0110 set to NEW, no need for add_test(\"\") workaround")
-            else()
-                ParseAndAddCatchTests_PrintDebugMessage("CMP0110 set to OLD adding \"\" for add_test() workaround")
-                set(CTestName "\"${CTestName}\"")
-            endif()
-
-            # Handle template test cases
-            if("${TestTypeAndFixture}" MATCHES ".*TEMPLATE_.*")
-              set(Name "${Name} - *")
-            endif()
-
-            # Add the test and set its properties
-            add_test(NAME "${CTestName}" COMMAND ${OptionalCatchTestLauncher} $<TARGET_FILE:${TestTarget}> ${Name} ${AdditionalCatchParameters})
-            # Old CMake versions do not document VERSION_GREATER_EQUAL, so we use VERSION_GREATER with 3.8 instead
-            if(PARSE_CATCH_TESTS_NO_HIDDEN_TESTS AND ${HiddenTagFound} AND ${CMAKE_VERSION} VERSION_GREATER "3.8")
-                ParseAndAddCatchTests_PrintDebugMessage("Setting DISABLED test property")
-                set_tests_properties("${CTestName}" PROPERTIES DISABLED ON)
-            else()
-                set_tests_properties("${CTestName}" PROPERTIES FAIL_REGULAR_EXPRESSION "No tests ran"
-                                                        LABELS "${Labels}")
-            endif()
-            set_property(
-              TARGET ${TestTarget}
-              APPEND
-              PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
-            set_property(
-              SOURCE ${SourceFile}
-              APPEND
-              PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
-        endif()
-
-
-    endforeach()
+      # Add the test and set its properties
+      add_test(NAME "${CTestName}" COMMAND ${OptionalCatchTestLauncher} $<TARGET_FILE:${TestTarget}> ${Name} ${AdditionalCatchParameters})
+      # Old CMake versions do not document VERSION_GREATER_EQUAL, so we use VERSION_GREATER with 3.8 instead
+      if(PARSE_CATCH_TESTS_NO_HIDDEN_TESTS AND ${HiddenTagFound} AND ${CMAKE_VERSION} VERSION_GREATER "3.8")
+        ParseAndAddCatchTests_PrintDebugMessage("Setting DISABLED test property")
+        set_tests_properties("${CTestName}" PROPERTIES DISABLED ON)
+      else()
+        set_tests_properties("${CTestName}" PROPERTIES FAIL_REGULAR_EXPRESSION "No tests ran"
+                                                LABELS "${Labels}")
+      endif()
+      set_property(
+        TARGET ${TestTarget}
+        APPEND
+        PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
+      set_property(
+        SOURCE ${SourceFile}
+        APPEND
+        PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
+    endif()
+  endforeach()
 endfunction()
 
 # entry point
 function(ParseAndAddCatchTests TestTarget)
-    message(DEPRECATION "ParseAndAddCatchTest: function deprecated because of possibility of missed test cases. Consider using 'catch_discover_tests' from 'Catch.cmake'")
-    ParseAndAddCatchTests_PrintDebugMessage("Started parsing ${TestTarget}")
-    get_target_property(SourceFiles ${TestTarget} SOURCES)
-    ParseAndAddCatchTests_PrintDebugMessage("Found the following sources: ${SourceFiles}")
-    foreach(SourceFile ${SourceFiles})
-        ParseAndAddCatchTests_ParseFile(${SourceFile} ${TestTarget})
-    endforeach()
-    ParseAndAddCatchTests_PrintDebugMessage("Finished parsing ${TestTarget}")
+  message(DEPRECATION "ParseAndAddCatchTest: function deprecated because of possibility of missed test cases. Consider using 'catch_discover_tests' from 'Catch.cmake'")
+  ParseAndAddCatchTests_PrintDebugMessage("Started parsing ${TestTarget}")
+  get_target_property(SourceFiles ${TestTarget} SOURCES)
+  ParseAndAddCatchTests_PrintDebugMessage("Found the following sources: ${SourceFiles}")
+  foreach(SourceFile ${SourceFiles})
+    ParseAndAddCatchTests_ParseFile(${SourceFile} ${TestTarget})
+  endforeach()
+  ParseAndAddCatchTests_PrintDebugMessage("Finished parsing ${TestTarget}")
 endfunction()

extras/catch_amalgamated.cpp

@@ -6,8 +6,8 @@
 
 // SPDX-License-Identifier: BSL-1.0
 
-//  Catch v3.7.0
-//  Generated: 2024-08-14 12:04:53.604337
+//  Catch v3.8.1
+//  Generated: 2025-04-08 12:33:19.863332
 //  ----------------------------------------------------------
 //  This file is an amalgamation of multiple different files.
 //  You probably shouldn't edit it directly.
@@ -332,7 +332,7 @@ namespace Catch {
                                              double diff = b - m;
                                              return a + diff * diff;
                                          } ) /
-                        ( last - first );
+                        static_cast<double>( last - first );
                     return std::sqrt( variance );
                 }
 
@@ -367,7 +367,7 @@ namespace Catch {
                                               double* first,
                                               double* last ) {
                 auto count = last - first;
-                double idx = (count - 1) * k / static_cast<double>(q);
+                double idx = static_cast<double>((count - 1) * k) / static_cast<double>(q);
                 int j = static_cast<int>(idx);
                 double g = idx - j;
                 std::nth_element(first, first + j, last);
@@ -470,10 +470,10 @@ namespace Catch {
 
                 double accel = sum_cubes / ( 6 * std::pow( sum_squares, 1.5 ) );
                 long n = static_cast<long>( resample.size() );
-                double prob_n =
+                double prob_n = static_cast<double>(
                     std::count_if( resample.begin(),
                                    resample.end(),
-                                   [point]( double x ) { return x < point; } ) /
+                                   [point]( double x ) { return x < point; } )) /
                     static_cast<double>( n );
                 // degenerate case with uniform samples
                 if ( Catch::Detail::directCompare( prob_n, 0. ) ) {
@@ -627,7 +627,7 @@ std::string StringMaker<Catch::Approx>::convert(Catch::Approx const& value) {
 
 namespace Catch {
 
-    AssertionResultData::AssertionResultData(ResultWas::OfType _resultType, LazyExpression const & _lazyExpression):
+    AssertionResultData::AssertionResultData(ResultWas::OfType _resultType, LazyExpression const& _lazyExpression):
         lazyExpression(_lazyExpression),
         resultType(_resultType) {}
 
@@ -1170,7 +1170,13 @@ namespace Catch {
 namespace Catch {
 
     namespace {
-        const int MaxExitCode = 255;
+        static constexpr int TestFailureExitCode = 42;
+        static constexpr int UnspecifiedErrorExitCode = 1;
+        static constexpr int AllTestsSkippedExitCode = 4;
+        static constexpr int NoTestsRunExitCode = 2;
+        static constexpr int UnmatchedTestSpecExitCode = 3;
+        static constexpr int InvalidTestSpecExitCode = 5;
+
 
         IEventListenerPtr createReporter(std::string const& reporterName, ReporterConfig&& config) {
             auto reporter = Catch::getRegistryHub().getReporterRegistry().create(reporterName, CATCH_MOVE(config));
@@ -1334,8 +1340,7 @@ namespace Catch {
     }
 
     int Session::applyCommandLine( int argc, char const * const * argv ) {
-        if( m_startupExceptions )
-            return 1;
+        if ( m_startupExceptions ) { return UnspecifiedErrorExitCode; }
 
         auto result = m_cli.parse( Clara::Args( argc, argv ) );
 
@@ -1351,7 +1356,7 @@ namespace Catch {
                 << TextFlow::Column( result.errorMessage() ).indent( 2 )
                 << "\n\n";
             errStream->stream() << "Run with -? for usage\n\n" << std::flush;
-            return MaxExitCode;
+            return UnspecifiedErrorExitCode;
         }
 
         if( m_configData.showHelp )
@@ -1421,8 +1426,7 @@ namespace Catch {
     }
 
     int Session::runInternal() {
-        if( m_startupExceptions )
-            return 1;
+        if ( m_startupExceptions ) { return UnspecifiedErrorExitCode; }
 
         if (m_configData.showHelp || m_configData.libIdentify) {
             return 0;
@@ -1433,7 +1437,7 @@ namespace Catch {
                           << ") must be greater than the shard index ("
                           << m_configData.shardIndex << ")\n"
                           << std::flush;
-            return 1;
+            return UnspecifiedErrorExitCode;
         }
 
         CATCH_TRY {
@@ -1456,7 +1460,7 @@ namespace Catch {
                 for ( auto const& spec : invalidSpecs ) {
                     reporter->reportInvalidTestSpec( spec );
                 }
-                return 1;
+                return InvalidTestSpecExitCode;
             }
 
 
@@ -1470,29 +1474,29 @@ namespace Catch {
 
             if ( tests.hadUnmatchedTestSpecs()
                 && m_config->warnAboutUnmatchedTestSpecs() ) {
-                return 3;
+                // UnmatchedTestSpecExitCode
+                return UnmatchedTestSpecExitCode;
             }
 
             if ( totals.testCases.total() == 0
                 && !m_config->zeroTestsCountAsSuccess() ) {
-                return 2;
+                return NoTestsRunExitCode;
             }
 
             if ( totals.testCases.total() > 0 &&
                  totals.testCases.total() == totals.testCases.skipped
                 && !m_config->zeroTestsCountAsSuccess() ) {
-                return 4;
+                return AllTestsSkippedExitCode;
             }
 
-            // Note that on unices only the lower 8 bits are usually used, clamping
-            // the return value to 255 prevents false negative when some multiple
-            // of 256 tests has failed
-            return (std::min) (MaxExitCode, static_cast<int>(totals.assertions.failed));
+            if ( totals.assertions.failed ) { return TestFailureExitCode; }
+            return 0;
+
         }
 #if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
         catch( std::exception& ex ) {
             Catch::cerr() << ex.what() << '\n' << std::flush;
-            return MaxExitCode;
+            return UnspecifiedErrorExitCode;
         }
 #endif
     }
@@ -1528,26 +1532,26 @@ namespace Catch {
         static_assert(sizeof(TestCaseProperties) == sizeof(TCP_underlying_type),
                       "The size of the TestCaseProperties is different from the assumed size");
 
-        TestCaseProperties operator|(TestCaseProperties lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties operator|(TestCaseProperties lhs, TestCaseProperties rhs) {
             return static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) | static_cast<TCP_underlying_type>(rhs)
             );
         }
 
-        TestCaseProperties& operator|=(TestCaseProperties& lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties& operator|=(TestCaseProperties& lhs, TestCaseProperties rhs) {
             lhs = static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) | static_cast<TCP_underlying_type>(rhs)
             );
             return lhs;
         }
 
-        TestCaseProperties operator&(TestCaseProperties lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties operator&(TestCaseProperties lhs, TestCaseProperties rhs) {
             return static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) & static_cast<TCP_underlying_type>(rhs)
             );
         }
 
-        bool applies(TestCaseProperties tcp) {
+        constexpr bool applies(TestCaseProperties tcp) {
             static_assert(static_cast<TCP_underlying_type>(TestCaseProperties::None) == 0,
                           "TestCaseProperties::None must be equal to 0");
             return tcp != TestCaseProperties::None;
@@ -1586,7 +1590,7 @@ namespace Catch {
             return "Anonymous test case " + std::to_string(++counter);
         }
 
-        StringRef extractFilenamePart(StringRef filename) {
+        constexpr StringRef extractFilenamePart(StringRef filename) {
             size_t lastDot = filename.size();
             while (lastDot > 0 && filename[lastDot - 1] != '.') {
                 --lastDot;
@@ -1604,7 +1608,7 @@ namespace Catch {
         }
 
         // Returns the upper bound on size of extra tags ([#file]+[.])
-        size_t sizeOfExtraTags(StringRef filepath) {
+        constexpr size_t sizeOfExtraTags(StringRef filepath) {
             // [.] is 3, [#] is another 3
             const size_t extras = 3 + 3;
             return extractFilenamePart(filepath).size() + extras;
@@ -1765,10 +1769,6 @@ namespace Catch {
         return lhs.tags < rhs.tags;
     }
 
-    TestCaseInfo const& TestCaseHandle::getTestCaseInfo() const {
-        return *m_info;
-    }
-
 } // end namespace Catch
 
 
@@ -1909,7 +1909,7 @@ namespace Catch {
 
     namespace {
         static auto getCurrentNanosecondsSinceEpoch() -> uint64_t {
-            return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
+            return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::steady_clock::now().time_since_epoch()).count();
         }
     } // end unnamed namespace
 
@@ -1926,7 +1926,7 @@ namespace Catch {
         return static_cast<unsigned int>(getElapsedMicroseconds()/1000);
     }
     auto Timer::getElapsedSeconds() const -> double {
-        return getElapsedMicroseconds()/1000000.0;
+        return static_cast<double>(getElapsedMicroseconds())/1000000.0;
     }
 
 
@@ -1946,7 +1946,10 @@ namespace Detail {
         const int hexThreshold = 255;
 
         struct Endianness {
-            enum Arch { Big, Little };
+            enum Arch : uint8_t {
+                Big,
+                Little
+            };
 
             static Arch which() {
                 int one = 1;
@@ -2280,7 +2283,7 @@ namespace Catch {
     }
 
     Version const& libraryVersion() {
-        static Version version( 3, 7, 0, "", 0 );
+        static Version version( 3, 8, 1, "", 0 );
         return version;
     }
 
@@ -2536,8 +2539,8 @@ namespace Catch {
     void AssertionHandler::handleExpr( ITransientExpression const& expr ) {
         m_resultCapture.handleExpr( m_assertionInfo, expr, m_reaction );
     }
-    void AssertionHandler::handleMessage(ResultWas::OfType resultType, StringRef message) {
-        m_resultCapture.handleMessage( m_assertionInfo, resultType, message, m_reaction );
+    void AssertionHandler::handleMessage(ResultWas::OfType resultType, std::string&& message) {
+        m_resultCapture.handleMessage( m_assertionInfo, resultType, CATCH_MOVE(message), m_reaction );
     }
 
     auto AssertionHandler::allowThrows() const -> bool {
@@ -2683,7 +2686,7 @@ namespace Catch {
                                 { TokenType::Argument,
                                   next.substr( delimiterPos + 1, next.size() ) } );
                         } else {
-                            if ( next[1] != '-' && next.size() > 2 ) {
+                            if ( next.size() > 1 && next[1] != '-' && next.size() > 2 ) {
                                 // Combined short args, e.g. "-ab" for "-a -b"
                                 for ( size_t i = 1; i < next.size(); ++i ) {
                                     m_tokenBuffer.push_back(
@@ -3516,7 +3519,7 @@ namespace {
 #endif // Windows/ ANSI/ None
 
 
-#if defined( CATCH_PLATFORM_LINUX ) || defined( CATCH_PLATFORM_MAC )
+#if defined( CATCH_PLATFORM_LINUX ) || defined( CATCH_PLATFORM_MAC ) || defined( __GLIBC__ )
 #    define CATCH_INTERNAL_HAS_ISATTY
 #    include <unistd.h>
 #endif
@@ -3656,12 +3659,6 @@ namespace Catch {
         return *Context::currentContext;
     }
 
-    void Context::setResultCapture( IResultCapture* resultCapture ) {
-        m_resultCapture = resultCapture;
-    }
-
-    void Context::setConfig( IConfig const* config ) { m_config = config; }
-
     SimplePcg32& sharedRng() {
         static SimplePcg32 s_rng;
         return s_rng;
@@ -5264,7 +5261,7 @@ namespace {
     SimplePcg32::result_type SimplePcg32::operator()() {
         // prepare the output value
         const uint32_t xorshifted = static_cast<uint32_t>(((m_state >> 18u) ^ m_state) >> 27u);
-        const auto output = rotate_right(xorshifted, m_state >> 59u);
+        const auto output = rotate_right(xorshifted, static_cast<uint32_t>(m_state >> 59u));
 
         // advance state
         m_state = m_state * 6364136223846793005ULL + s_inc;
@@ -5547,26 +5544,6 @@ ReporterSpec::ReporterSpec(
 
 
 
-namespace Catch {
-
-    bool isOk( ResultWas::OfType resultType ) {
-        return ( resultType & ResultWas::FailureBit ) == 0;
-    }
-    bool isJustInfo( int flags ) {
-        return flags == ResultWas::Info;
-    }
-
-    ResultDisposition::Flags operator | ( ResultDisposition::Flags lhs, ResultDisposition::Flags rhs ) {
-        return static_cast<ResultDisposition::Flags>( static_cast<int>( lhs ) | static_cast<int>( rhs ) );
-    }
-
-    bool shouldContinueOnFailure( int flags )    { return ( flags & ResultDisposition::ContinueOnFailure ) != 0; }
-    bool shouldSuppressFailure( int flags )      { return ( flags & ResultDisposition::SuppressFail ) != 0; }
-
-} // end namespace Catch
-
-
-
 #include <cstdio>
 #include <sstream>
 #include <vector>
@@ -6232,13 +6209,13 @@ namespace Catch {
     void RunContext::handleMessage(
             AssertionInfo const& info,
             ResultWas::OfType resultType,
-            StringRef message,
+            std::string&& message,
             AssertionReaction& reaction
     ) {
         m_lastAssertionInfo = info;
 
         AssertionResultData data( resultType, LazyExpression( false ) );
-        data.message = static_cast<std::string>(message);
+        data.message = CATCH_MOVE( message );
         AssertionResult assertionResult{ m_lastAssertionInfo,
                                          CATCH_MOVE( data ) };
 
@@ -7153,7 +7130,7 @@ namespace Catch {
             TestType m_testAsFunction;
 
         public:
-            TestInvokerAsFunction( TestType testAsFunction ) noexcept:
+            constexpr TestInvokerAsFunction( TestType testAsFunction ) noexcept:
                 m_testAsFunction( testAsFunction ) {}
 
             void invoke() const override { m_testAsFunction(); }
@@ -7888,36 +7865,16 @@ namespace {
         os.flags(f);
     }
 
-    bool shouldNewline(XmlFormatting fmt) {
+    constexpr bool shouldNewline(XmlFormatting fmt) {
         return !!(static_cast<std::underlying_type_t<XmlFormatting>>(fmt & XmlFormatting::Newline));
     }
 
-    bool shouldIndent(XmlFormatting fmt) {
+    constexpr bool shouldIndent(XmlFormatting fmt) {
         return !!(static_cast<std::underlying_type_t<XmlFormatting>>(fmt & XmlFormatting::Indent));
     }
 
 } // anonymous namespace
 
-    XmlFormatting operator | (XmlFormatting lhs, XmlFormatting rhs) {
-        return static_cast<XmlFormatting>(
-            static_cast<std::underlying_type_t<XmlFormatting>>(lhs) |
-            static_cast<std::underlying_type_t<XmlFormatting>>(rhs)
-        );
-    }
-
-    XmlFormatting operator & (XmlFormatting lhs, XmlFormatting rhs) {
-        return static_cast<XmlFormatting>(
-            static_cast<std::underlying_type_t<XmlFormatting>>(lhs) &
-            static_cast<std::underlying_type_t<XmlFormatting>>(rhs)
-        );
-    }
-
-
-    XmlEncode::XmlEncode( StringRef str, ForWhat forWhat )
-    :   m_str( str ),
-        m_forWhat( forWhat )
-    {}
-
     void XmlEncode::encodeTo( std::ostream& os ) const {
         // Apostrophe escaping not necessary if we always use " to write attributes
         // (see: http://www.w3.org/TR/xml/#syntax)
@@ -9154,7 +9111,7 @@ struct RowBreak {};
 struct OutputFlush {};
 
 class Duration {
-    enum class Unit {
+    enum class Unit : uint8_t {
         Auto,
         Nanoseconds,
         Microseconds,
@@ -9226,7 +9183,10 @@ public:
 };
 } // end anon namespace
 
-enum class Justification { Left, Right };
+enum class Justification : uint8_t {
+    Left,
+    Right
+};
 
 struct ColumnInfo {
     std::string name;
@@ -11050,9 +11010,9 @@ namespace Catch {
         if (!rootName.empty())
             name = rootName + '/' + name;
 
-        if ( sectionNode.hasAnyAssertions()
+        if ( sectionNode.stats.assertions.total() > 0
             || !sectionNode.stdOut.empty()
-            ||  !sectionNode.stdErr.empty() ) {
+            || !sectionNode.stdErr.empty() ) {
             XmlWriter::ScopedElement e = xml.scopedElement("testCase");
             xml.writeAttribute("name"_sr, name);
             xml.writeAttribute("duration"_sr, static_cast<long>(sectionNode.stats.durationInSeconds * 1000));

extras/catch_amalgamated.hpp

@@ -6,8 +6,8 @@
 
 // SPDX-License-Identifier: BSL-1.0
 
-//  Catch v3.7.0
-//  Generated: 2024-08-14 12:04:53.220567
+//  Catch v3.8.1
+//  Generated: 2025-04-08 12:33:19.851017
 //  ----------------------------------------------------------
 //  This file is an amalgamation of multiple different files.
 //  You probably shouldn't edit it directly.
@@ -150,7 +150,7 @@
 #    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
          _Pragma( "GCC diagnostic ignored \"-Wshadow\"" )
 
-#    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__)
+#    define CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P
 
 #endif
 
@@ -174,14 +174,45 @@
 // clang-cl defines _MSC_VER as well as __clang__, which could cause the
 // start/stop internal suppression macros to be double defined.
 #if defined(__clang__) && !defined(_MSC_VER)
-
+#    define CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P
 #    define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "clang diagnostic push" )
 #    define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION  _Pragma( "clang diagnostic pop" )
-
 #endif // __clang__ && !_MSC_VER
 
 #if defined(__clang__)
 
+#    define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wexit-time-destructors\"" ) \
+         _Pragma( "clang diagnostic ignored \"-Wglobal-constructors\"")
+
+#    define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wparentheses\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wunused-variable\"" )
+
+#    if (__clang_major__ >= 20)
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
+             _Pragma( "clang diagnostic ignored \"-Wvariadic-macro-arguments-omitted\"" )
+#    elif (__clang_major__ == 19)
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
+	         _Pragma( "clang diagnostic ignored \"-Wc++20-extensions\"" )
+#    else
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS
+             _Pragma( "clang diagnostic ignored \"-Wgnu-zero-variadic-macro-arguments\"" )
+#    endif
+
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wunused-template\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS \
+        _Pragma( "clang diagnostic ignored \"-Wcomma\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
+        _Pragma( "clang diagnostic ignored \"-Wshadow\"" )
+
+#endif // __clang__
+
 // As of this writing, IBM XL's implementation of __builtin_constant_p has a bug
 // which results in calls to destructors being emitted for each temporary,
 // without a matching initialization. In practice, this can result in something
@@ -198,35 +229,11 @@
 // https://developer.nvidia.com/nvidia_bug/3321845.
 //
 // Therefore, `CATCH_INTERNAL_IGNORE_BUT_WARN` is not implemented.
-#  if !defined(__ibmxl__) && !defined(__CUDACC__) && !defined( __NVCOMPILER )
-#    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__) /* NOLINT(cppcoreguidelines-pro-type-vararg, hicpp-vararg) */
-#  endif
+#if defined( __ibmxl__ ) || defined( __CUDACC__ ) || defined( __NVCOMPILER )
+#    define CATCH_INTERNAL_CONFIG_NO_USE_BUILTIN_CONSTANT_P
+#endif
 
 
-#    define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wexit-time-destructors\"" ) \
-         _Pragma( "clang diagnostic ignored \"-Wglobal-constructors\"")
-
-#    define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wparentheses\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wunused-variable\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wgnu-zero-variadic-macro-arguments\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wunused-template\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS \
-        _Pragma( "clang diagnostic ignored \"-Wcomma\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
-        _Pragma( "clang diagnostic ignored \"-Wshadow\"" )
-
-#endif // __clang__
-
 
 ////////////////////////////////////////////////////////////////////////////////
 // We know some environments not to support full POSIX signals
@@ -450,6 +457,22 @@
 #endif
 
 
+// The goal of this macro is to avoid evaluation of the arguments, but
+// still have the compiler warn on problems inside...
+#if defined( CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P ) && \
+    !defined( CATCH_INTERNAL_CONFIG_NO_USE_BUILTIN_CONSTANT_P ) && !defined(CATCH_CONFIG_USE_BUILTIN_CONSTANT_P)
+#define CATCH_CONFIG_USE_BUILTIN_CONSTANT_P
+#endif
+
+#if defined( CATCH_CONFIG_USE_BUILTIN_CONSTANT_P ) && \
+    !defined( CATCH_CONFIG_NO_USE_BUILTIN_CONSTANT_P )
+#    define CATCH_INTERNAL_IGNORE_BUT_WARN( ... )                                              \
+        (void)__builtin_constant_p( __VA_ARGS__ ) /* NOLINT(cppcoreguidelines-pro-type-vararg, \
+                                                     hicpp-vararg) */
+#else
+#    define CATCH_INTERNAL_IGNORE_BUT_WARN( ... )
+#endif
+
 // Even if we do not think the compiler has that warning, we still have
 // to provide a macro that can be used by the code.
 #if !defined(CATCH_INTERNAL_START_WARNINGS_SUPPRESSION)
@@ -486,13 +509,6 @@
 #    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS
 #endif
 
-
-// The goal of this macro is to avoid evaluation of the arguments, but
-// still have the compiler warn on problems inside...
-#if !defined(CATCH_INTERNAL_IGNORE_BUT_WARN)
-#   define CATCH_INTERNAL_IGNORE_BUT_WARN(...)
-#endif
-
 #if defined(__APPLE__) && defined(__apple_build_version__) && (__clang_major__ < 10)
 #   undef CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS
 #elif defined(__clang__) && (__clang_major__ < 5)
@@ -555,10 +571,15 @@ namespace Catch {
         friend void cleanUpContext();
 
     public:
-        IResultCapture* getResultCapture() const { return m_resultCapture; }
-        IConfig const* getConfig() const { return m_config; }
-        void setResultCapture( IResultCapture* resultCapture );
-        void setConfig( IConfig const* config );
+        constexpr IResultCapture* getResultCapture() const {
+            return m_resultCapture;
+        }
+        constexpr IConfig const* getConfig() const { return m_config; }
+        constexpr void setResultCapture( IResultCapture* resultCapture ) {
+            m_resultCapture = resultCapture;
+        }
+        constexpr void setConfig( IConfig const* config ) { m_config = config; }
+
     };
 
     Context& getCurrentMutableContext();
@@ -669,7 +690,6 @@ namespace Catch {
 #define CATCH_INTERFACES_CAPTURE_HPP_INCLUDED
 
 #include <string>
-#include <chrono>
 
 
 
@@ -819,8 +839,10 @@ namespace Catch {
 
     }; };
 
-    bool isOk( ResultWas::OfType resultType );
-    bool isJustInfo( int flags );
+    constexpr bool isOk( ResultWas::OfType resultType ) {
+        return ( resultType & ResultWas::FailureBit ) == 0;
+    }
+    constexpr bool isJustInfo( int flags ) { return flags == ResultWas::Info; }
 
 
     // ResultDisposition::Flags enum
@@ -832,11 +854,18 @@ namespace Catch {
         SuppressFail = 0x08         // Failures are reported but do not fail the test
     }; };
 
-    ResultDisposition::Flags operator | ( ResultDisposition::Flags lhs, ResultDisposition::Flags rhs );
+    constexpr ResultDisposition::Flags operator|( ResultDisposition::Flags lhs,
+                                        ResultDisposition::Flags rhs ) {
+        return static_cast<ResultDisposition::Flags>( static_cast<int>( lhs ) |
+                                                      static_cast<int>( rhs ) );
+    }
 
-    bool shouldContinueOnFailure( int flags );
-    inline bool isFalseTest( int flags ) { return ( flags & ResultDisposition::FalseTest ) != 0; }
-    bool shouldSuppressFailure( int flags );
+    constexpr bool isFalseTest( int flags ) {
+        return ( flags & ResultDisposition::FalseTest ) != 0;
+    }
+    constexpr bool shouldSuppressFailure( int flags ) {
+        return ( flags & ResultDisposition::SuppressFail ) != 0;
+    }
 
 } // end namespace Catch
 
@@ -1054,7 +1083,7 @@ namespace Catch {
         virtual void handleMessage
                 (   AssertionInfo const& info,
                     ResultWas::OfType resultType,
-                    StringRef message,
+                    std::string&& message,
                     AssertionReaction& reaction ) = 0;
         virtual void handleUnexpectedExceptionNotThrown
                 (   AssertionInfo const& info,
@@ -1302,7 +1331,7 @@ namespace Catch {
             int high_mild = 0;      // 1.5 to 3 times IQR above Q3
             int high_severe = 0;    // more than 3 times IQR above Q3
 
-            int total() const {
+            constexpr int total() const {
                 return low_severe + low_mild + high_mild + high_severe;
             }
         };
@@ -3037,7 +3066,11 @@ struct ratio_string<std::milli> {
 
 #ifdef _MSC_VER
             std::tm timeInfo = {};
-            gmtime_s(&timeInfo, &converted);
+            const auto err = gmtime_s(&timeInfo, &converted);
+            if ( err ) {
+                return "gmtime from provided timepoint has failed. This "
+                       "happens e.g. with pre-1970 dates using Microsoft libc";
+            }
 #else
             std::tm* timeInfo = std::gmtime(&converted);
 #endif
@@ -3267,13 +3300,13 @@ namespace Catch {
         ITransientExpression const* m_transientExpression = nullptr;
         bool m_isNegated;
     public:
-        LazyExpression( bool isNegated ):
+        constexpr LazyExpression( bool isNegated ):
             m_isNegated(isNegated)
         {}
-        LazyExpression(LazyExpression const& other) = default;
+        constexpr LazyExpression(LazyExpression const& other) = default;
         LazyExpression& operator = ( LazyExpression const& ) = delete;
 
-        explicit operator bool() const {
+        constexpr explicit operator bool() const {
             return m_transientExpression != nullptr;
         }
 
@@ -4012,7 +4045,7 @@ namespace Catch {
     do { \
         Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, Catch::StringRef(), resultDisposition ); \
         catchAssertionHandler.handleMessage( messageType, ( Catch::MessageStream() << __VA_ARGS__ + ::Catch::StreamEndStop() ).m_stream.str() ); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -5272,6 +5305,9 @@ namespace Catch {
         bool m_isBinaryExpression;
         bool m_result;
 
+    protected:
+        ~ITransientExpression() = default;
+
     public:
         constexpr auto isBinaryExpression() const -> bool { return m_isBinaryExpression; }
         constexpr auto getResult() const -> bool { return m_result; }
@@ -5283,17 +5319,13 @@ namespace Catch {
             m_result( result )
         {}
 
-        ITransientExpression() = default;
-        ITransientExpression(ITransientExpression const&) = default;
-        ITransientExpression& operator=(ITransientExpression const&) = default;
+        constexpr ITransientExpression( ITransientExpression const& ) = default;
+        constexpr ITransientExpression& operator=( ITransientExpression const& ) = default;
 
         friend std::ostream& operator<<(std::ostream& out, ITransientExpression const& expr) {
             expr.streamReconstructedExpression(out);
             return out;
         }
-
-    protected:
-        ~ITransientExpression() = default;
     };
 
     void formatReconstructedExpression( std::ostream &os, std::string const& lhs, StringRef op, std::string const& rhs );
@@ -5602,12 +5634,12 @@ namespace Catch {
 
 
         template<typename T>
-        void handleExpr( ExprLhs<T> const& expr ) {
+        constexpr void handleExpr( ExprLhs<T> const& expr ) {
             handleExpr( expr.makeUnaryExpr() );
         }
         void handleExpr( ITransientExpression const& expr );
 
-        void handleMessage(ResultWas::OfType resultType, StringRef message);
+        void handleMessage(ResultWas::OfType resultType, std::string&& message);
 
         void handleExceptionThrownAsExpected();
         void handleUnexpectedExceptionNotThrown();
@@ -5663,8 +5695,6 @@ namespace Catch {
 
 #endif
 
-#define INTERNAL_CATCH_REACT( handler ) handler.complete();
-
 ///////////////////////////////////////////////////////////////////////////////
 #define INTERNAL_CATCH_TEST( macroName, resultDisposition, ... ) \
     do { /* NOLINT(bugprone-infinite-loop) */ \
@@ -5677,7 +5707,7 @@ namespace Catch {
             catchAssertionHandler.handleExpr( Catch::Decomposer() <= __VA_ARGS__ ); /* NOLINT(bugprone-chained-comparison) */ \
             CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
         } INTERNAL_CATCH_CATCH( catchAssertionHandler ) \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( (void)0, (false) && static_cast<const bool&>( !!(__VA_ARGS__) ) ) // the expression here is never evaluated at runtime but it forces the compiler to give it a look
     // The double negation silences MSVC's C4800 warning, the static_cast forces short-circuit evaluation if the type has overloaded &&.
 
@@ -5705,7 +5735,7 @@ namespace Catch {
         catch( ... ) { \
             catchAssertionHandler.handleUnexpectedInflightException(); \
         } \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -5726,7 +5756,7 @@ namespace Catch {
             } \
         else \
             catchAssertionHandler.handleThrowingCallSkipped(); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -5750,7 +5780,7 @@ namespace Catch {
             } \
         else \
             catchAssertionHandler.handleThrowingCallSkipped(); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 
@@ -5774,7 +5804,7 @@ namespace Catch {
             } \
         else \
             catchAssertionHandler.handleThrowingCallSkipped(); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 #endif // CATCH_CONFIG_DISABLE
@@ -5975,7 +6005,8 @@ template<typename C>
 class TestInvokerAsMethod : public ITestInvoker {
     void (C::*m_testAsMethod)();
 public:
-    TestInvokerAsMethod( void (C::*testAsMethod)() ) noexcept : m_testAsMethod( testAsMethod ) {}
+    constexpr TestInvokerAsMethod( void ( C::*testAsMethod )() ) noexcept:
+        m_testAsMethod( testAsMethod ) {}
 
     void invoke() const override {
         C obj;
@@ -5996,7 +6027,8 @@ class TestInvokerFixture : public ITestInvoker {
     Detail::unique_ptr<C> m_fixture = nullptr;
 
 public:
-    TestInvokerFixture( void ( C::*testAsMethod )() const) noexcept : m_testAsMethod( testAsMethod ) {}
+    constexpr TestInvokerFixture( void ( C::*testAsMethod )() const ) noexcept:
+        m_testAsMethod( testAsMethod ) {}
 
     void prepareTestCase() override {
         m_fixture = Detail::make_unique<C>();
@@ -7136,7 +7168,7 @@ namespace Catch {
         TestCaseInfo* m_info;
         ITestInvoker* m_invoker;
     public:
-        TestCaseHandle(TestCaseInfo* info, ITestInvoker* invoker) :
+        constexpr TestCaseHandle(TestCaseInfo* info, ITestInvoker* invoker) :
             m_info(info), m_invoker(invoker) {}
 
         void prepareTestCase() const {
@@ -7151,7 +7183,9 @@ namespace Catch {
             m_invoker->invoke();
         }
 
-        TestCaseInfo const& getTestCaseInfo() const;
+        constexpr TestCaseInfo const& getTestCaseInfo() const {
+            return *m_info;
+        }
     };
 
     Detail::unique_ptr<TestCaseInfo>
@@ -7214,7 +7248,7 @@ namespace Catch {
         class ExceptionTranslator : public IExceptionTranslator {
         public:
 
-            ExceptionTranslator( std::string(*translateFunction)( T const& ) )
+            constexpr ExceptionTranslator( std::string(*translateFunction)( T const& ) )
             : m_translateFunction( translateFunction )
             {}
 
@@ -7315,8 +7349,8 @@ namespace Catch {
 #define CATCH_VERSION_MACROS_HPP_INCLUDED
 
 #define CATCH_VERSION_MAJOR 3
-#define CATCH_VERSION_MINOR 7
-#define CATCH_VERSION_PATCH 0
+#define CATCH_VERSION_MINOR 8
+#define CATCH_VERSION_PATCH 1
 
 #endif // CATCH_VERSION_MACROS_HPP_INCLUDED
 
@@ -8043,7 +8077,7 @@ namespace Catch {
         struct ExtendedMultResult {
             T upper;
             T lower;
-            bool operator==( ExtendedMultResult const& rhs ) const {
+            constexpr bool operator==( ExtendedMultResult const& rhs ) const {
                 return upper == rhs.upper && lower == rhs.lower;
             }
         };
@@ -8161,6 +8195,7 @@ namespace Catch {
          * get by simple casting ([0, ..., INT_MAX, INT_MIN, ..., -1])
          */
         template <typename OriginalType, typename UnsignedType>
+        constexpr
         std::enable_if_t<std::is_signed<OriginalType>::value, UnsignedType>
         transposeToNaturalOrder( UnsignedType in ) {
             static_assert(
@@ -8181,6 +8216,7 @@ namespace Catch {
 
         template <typename OriginalType,
                   typename UnsignedType>
+        constexpr
         std::enable_if_t<std::is_unsigned<OriginalType>::value, UnsignedType>
             transposeToNaturalOrder(UnsignedType in) {
             static_assert(
@@ -8232,24 +8268,24 @@ class uniform_integer_distribution {
     // distribution will be reused many times and this is an optimization.
     UnsignedIntegerType m_rejection_threshold = 0;
 
-    UnsignedIntegerType computeDistance(IntegerType a, IntegerType b) const {
+    static constexpr UnsignedIntegerType computeDistance(IntegerType a, IntegerType b) {
         // This overflows and returns 0 if a == 0 and b == TYPE_MAX.
         // We handle that later when generating the number.
         return transposeTo(b) - transposeTo(a) + 1;
     }
 
-    static UnsignedIntegerType computeRejectionThreshold(UnsignedIntegerType ab_distance) {
+    static constexpr UnsignedIntegerType computeRejectionThreshold(UnsignedIntegerType ab_distance) {
         // distance == 0 means that we will return all possible values from
         // the type's range, and that we shouldn't reject anything.
         if ( ab_distance == 0 ) { return 0; }
         return ( ~ab_distance + 1 ) % ab_distance;
     }
 
-    static UnsignedIntegerType transposeTo(IntegerType in) {
+    static constexpr UnsignedIntegerType transposeTo(IntegerType in) {
         return Detail::transposeToNaturalOrder<IntegerType>(
             static_cast<UnsignedIntegerType>( in ) );
     }
-    static IntegerType transposeBack(UnsignedIntegerType in) {
+    static constexpr IntegerType transposeBack(UnsignedIntegerType in) {
         return static_cast<IntegerType>(
             Detail::transposeToNaturalOrder<IntegerType>(in) );
     }
@@ -8257,7 +8293,7 @@ class uniform_integer_distribution {
 public:
     using result_type = IntegerType;
 
-    uniform_integer_distribution( IntegerType a, IntegerType b ):
+    constexpr uniform_integer_distribution( IntegerType a, IntegerType b ):
         m_a( transposeTo(a) ),
         m_ab_distance( computeDistance(a, b) ),
         m_rejection_threshold( computeRejectionThreshold(m_ab_distance) ) {
@@ -8265,7 +8301,7 @@ public:
     }
 
     template <typename Generator>
-    result_type operator()( Generator& g ) {
+    constexpr result_type operator()( Generator& g ) {
         // All possible values of result_type are valid.
         if ( m_ab_distance == 0 ) {
             return transposeBack( Detail::fillBitsFrom<UnsignedIntegerType>( g ) );
@@ -8283,8 +8319,8 @@ public:
         return transposeBack(m_a + emul.upper);
     }
 
-    result_type a() const { return transposeBack(m_a); }
-    result_type b() const { return transposeBack(m_ab_distance + m_a - 1); }
+    constexpr result_type a() const { return transposeBack(m_a); }
+    constexpr result_type b() const { return transposeBack(m_ab_distance + m_a - 1); }
 };
 
 } // end namespace Catch
@@ -8697,7 +8733,7 @@ public:
 
 template <typename InputIterator,
           typename InputSentinel,
-          typename ResultType = typename std::iterator_traits<InputIterator>::value_type>
+          typename ResultType = std::remove_const_t<typename std::iterator_traits<InputIterator>::value_type>>
 GeneratorWrapper<ResultType> from_range(InputIterator from, InputSentinel to) {
     return GeneratorWrapper<ResultType>(Catch::Detail::make_unique<IteratorGenerator<ResultType>>(from, to));
 }
@@ -9742,6 +9778,7 @@ namespace Catch {
                   typename Sentinel,
                   typename T,
                   typename Comparator>
+        constexpr
         ForwardIter find_sentinel( ForwardIter start,
                                    Sentinel sentinel,
                                    T const& value,
@@ -9757,6 +9794,7 @@ namespace Catch {
                   typename Sentinel,
                   typename T,
                   typename Comparator>
+        constexpr
         std::ptrdiff_t count_sentinel( ForwardIter start,
                                        Sentinel sentinel,
                                        T const& value,
@@ -9770,6 +9808,7 @@ namespace Catch {
         }
 
         template <typename ForwardIter, typename Sentinel>
+        constexpr
         std::enable_if_t<!std::is_same<ForwardIter, Sentinel>::value,
                          std::ptrdiff_t>
         sentinel_distance( ForwardIter iter, const Sentinel sentinel ) {
@@ -9782,8 +9821,8 @@ namespace Catch {
         }
 
         template <typename ForwardIter>
-        std::ptrdiff_t sentinel_distance( ForwardIter first,
-                                          ForwardIter last ) {
+        constexpr std::ptrdiff_t sentinel_distance( ForwardIter first,
+                                                    ForwardIter last ) {
             return std::distance( first, last );
         }
 
@@ -9792,11 +9831,11 @@ namespace Catch {
                   typename ForwardIter2,
                   typename Sentinel2,
                   typename Comparator>
-        bool check_element_counts( ForwardIter1 first_1,
-                                   const Sentinel1 end_1,
-                                   ForwardIter2 first_2,
-                                   const Sentinel2 end_2,
-                                   Comparator cmp ) {
+        constexpr bool check_element_counts( ForwardIter1 first_1,
+                                             const Sentinel1 end_1,
+                                             ForwardIter2 first_2,
+                                             const Sentinel2 end_2,
+                                             Comparator cmp ) {
             auto cursor = first_1;
             while ( cursor != end_1 ) {
                 if ( find_sentinel( first_1, cursor, *cursor, cmp ) ==
@@ -9826,11 +9865,11 @@ namespace Catch {
                   typename ForwardIter2,
                   typename Sentinel2,
                   typename Comparator>
-        bool is_permutation( ForwardIter1 first_1,
-                             const Sentinel1 end_1,
-                             ForwardIter2 first_2,
-                             const Sentinel2 end_2,
-                             Comparator cmp ) {
+        constexpr bool is_permutation( ForwardIter1 first_1,
+                                       const Sentinel1 end_1,
+                                       ForwardIter2 first_2,
+                                       const Sentinel2 end_2,
+                                       Comparator cmp ) {
             // TODO: no optimization for stronger iterators, because we would also have to constrain on sentinel vs not sentinel types
             // TODO: Comparator has to be "both sides", e.g. a == b => b == a
             // This skips shared prefix of the two ranges
@@ -10486,7 +10525,7 @@ namespace Catch {
         void handleMessage
                 (   AssertionInfo const& info,
                     ResultWas::OfType resultType,
-                    StringRef message,
+                    std::string&& message,
                     AssertionReaction& reaction ) override;
         void handleUnexpectedExceptionNotThrown
                 (   AssertionInfo const& info,
@@ -11271,16 +11310,25 @@ namespace Catch {
 
 #include <iosfwd>
 #include <vector>
+#include <cstdint>
 
 namespace Catch {
-    enum class XmlFormatting {
+    enum class XmlFormatting : std::uint8_t {
         None = 0x00,
         Indent = 0x01,
         Newline = 0x02,
     };
 
-    XmlFormatting operator | (XmlFormatting lhs, XmlFormatting rhs);
-    XmlFormatting operator & (XmlFormatting lhs, XmlFormatting rhs);
+    constexpr XmlFormatting operator|( XmlFormatting lhs, XmlFormatting rhs ) {
+        return static_cast<XmlFormatting>( static_cast<std::uint8_t>( lhs ) |
+                                           static_cast<std::uint8_t>( rhs ) );
+    }
+
+    constexpr XmlFormatting operator&( XmlFormatting lhs, XmlFormatting rhs ) {
+        return static_cast<XmlFormatting>( static_cast<std::uint8_t>( lhs ) &
+                                           static_cast<std::uint8_t>( rhs ) );
+    }
+
 
     /**
      * Helper for XML-encoding text (escaping angle brackets, quotes, etc)
@@ -11292,7 +11340,9 @@ namespace Catch {
     public:
         enum ForWhat { ForTextNodes, ForAttributes };
 
-        XmlEncode( StringRef str, ForWhat forWhat = ForTextNodes );
+        constexpr XmlEncode( StringRef str, ForWhat forWhat = ForTextNodes ):
+            m_str( str ), m_forWhat( forWhat ) {}
+
 
         void encodeTo( std::ostream& os ) const;
 
@@ -11455,7 +11505,7 @@ namespace Catch {
         ArgT && m_arg;
         MatcherT const& m_matcher;
     public:
-        MatchExpr( ArgT && arg, MatcherT const& matcher )
+        constexpr MatchExpr( ArgT && arg, MatcherT const& matcher )
         :   ITransientExpression{ true, matcher.match( arg ) }, // not forwarding arg here on purpose
             m_arg( CATCH_FORWARD(arg) ),
             m_matcher( matcher )
@@ -11485,7 +11535,8 @@ namespace Catch {
     void handleExceptionMatchExpr( AssertionHandler& handler, StringMatcher const& matcher );
 
     template<typename ArgT, typename MatcherT>
-    auto makeMatchExpr( ArgT && arg, MatcherT const& matcher ) -> MatchExpr<ArgT, MatcherT> {
+    constexpr MatchExpr<ArgT, MatcherT>
+    makeMatchExpr( ArgT&& arg, MatcherT const& matcher ) {
         return MatchExpr<ArgT, MatcherT>( CATCH_FORWARD(arg), matcher );
     }
 
@@ -11499,7 +11550,7 @@ namespace Catch {
         INTERNAL_CATCH_TRY { \
             catchAssertionHandler.handleExpr( Catch::makeMatchExpr( arg, matcher ) ); \
         } INTERNAL_CATCH_CATCH( catchAssertionHandler ) \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 
@@ -11509,7 +11560,10 @@ namespace Catch {
         Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, CATCH_INTERNAL_STRINGIFY(__VA_ARGS__) ", " CATCH_INTERNAL_STRINGIFY(exceptionType) ", " CATCH_INTERNAL_STRINGIFY(matcher), resultDisposition ); \
         if( catchAssertionHandler.allowThrows() ) \
             try { \
+                CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
+                CATCH_INTERNAL_SUPPRESS_USELESS_CAST_WARNINGS \
                 static_cast<void>(__VA_ARGS__ ); \
+                CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
                 catchAssertionHandler.handleUnexpectedExceptionNotThrown(); \
             } \
             catch( exceptionType const& ex ) { \
@@ -11520,7 +11574,7 @@ namespace Catch {
             } \
         else \
             catchAssertionHandler.handleThrowingCallSkipped(); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 
@@ -12589,12 +12643,14 @@ namespace Catch {
 
         public:
             template <typename TargetRangeLike2, typename Equality2>
+            constexpr
             RangeEqualsMatcher( TargetRangeLike2&& range,
                                 Equality2&& predicate ):
                 m_desired( CATCH_FORWARD( range ) ),
                 m_predicate( CATCH_FORWARD( predicate ) ) {}
 
             template <typename RangeLike>
+            constexpr
             bool match( RangeLike&& rng ) const {
                 auto rng_start = begin( rng );
                 const auto rng_end = end( rng );
@@ -12627,12 +12683,14 @@ namespace Catch {
 
         public:
             template <typename TargetRangeLike2, typename Equality2>
+            constexpr
             UnorderedRangeEqualsMatcher( TargetRangeLike2&& range,
                                          Equality2&& predicate ):
                 m_desired( CATCH_FORWARD( range ) ),
                 m_predicate( CATCH_FORWARD( predicate ) ) {}
 
             template <typename RangeLike>
+            constexpr
             bool match( RangeLike&& rng ) const {
                 using std::begin;
                 using std::end;
@@ -12653,52 +12711,65 @@ namespace Catch {
          * Creates a matcher that checks if all elements in a range are equal
          * to all elements in another range.
          *
-         * Uses `std::equal_to` to do the comparison
+         * Uses the provided predicate `predicate` to do the comparisons
+         * (defaulting to `std::equal_to`)
          */
-        template <typename RangeLike>
-        std::enable_if_t<!Detail::is_matcher<RangeLike>::value,
-                         RangeEqualsMatcher<RangeLike, std::equal_to<>>>
-        RangeEquals( RangeLike&& range ) {
-            return { CATCH_FORWARD( range ), std::equal_to<>{} };
-        }
-
-        /**
-         * Creates a matcher that checks if all elements in a range are equal
-         * to all elements in another range.
-         *
-         * Uses to provided predicate `predicate` to do the comparisons
-         */
-        template <typename RangeLike, typename Equality>
+        template <typename RangeLike,
+                  typename Equality = decltype( std::equal_to<>{} )>
+        constexpr
         RangeEqualsMatcher<RangeLike, Equality>
-        RangeEquals( RangeLike&& range, Equality&& predicate ) {
+        RangeEquals( RangeLike&& range,
+                     Equality&& predicate = std::equal_to<>{} ) {
             return { CATCH_FORWARD( range ), CATCH_FORWARD( predicate ) };
         }
 
         /**
          * Creates a matcher that checks if all elements in a range are equal
-         * to all elements in another range, in some permutation
+         * to all elements in an initializer list.
          *
-         * Uses `std::equal_to` to do the comparison
+         * Uses the provided predicate `predicate` to do the comparisons
+         * (defaulting to `std::equal_to`)
          */
-        template <typename RangeLike>
-        std::enable_if_t<
-            !Detail::is_matcher<RangeLike>::value,
-            UnorderedRangeEqualsMatcher<RangeLike, std::equal_to<>>>
-        UnorderedRangeEquals( RangeLike&& range ) {
-            return { CATCH_FORWARD( range ), std::equal_to<>{} };
+        template <typename T,
+                  typename Equality = decltype( std::equal_to<>{} )>
+        constexpr
+        RangeEqualsMatcher<std::initializer_list<T>, Equality>
+        RangeEquals( std::initializer_list<T> range,
+                     Equality&& predicate = std::equal_to<>{} ) {
+            return { range, CATCH_FORWARD( predicate ) };
         }
 
         /**
          * Creates a matcher that checks if all elements in a range are equal
          * to all elements in another range, in some permutation.
          *
-         * Uses to provided predicate `predicate` to do the comparisons
+         * Uses the provided predicate `predicate` to do the comparisons
+         * (defaulting to `std::equal_to`)
          */
-        template <typename RangeLike, typename Equality>
+        template <typename RangeLike,
+                  typename Equality = decltype( std::equal_to<>{} )>
+        constexpr
         UnorderedRangeEqualsMatcher<RangeLike, Equality>
-        UnorderedRangeEquals( RangeLike&& range, Equality&& predicate ) {
+        UnorderedRangeEquals( RangeLike&& range,
+                              Equality&& predicate = std::equal_to<>{} ) {
             return { CATCH_FORWARD( range ), CATCH_FORWARD( predicate ) };
         }
+
+        /**
+         * Creates a matcher that checks if all elements in a range are equal
+         * to all elements in an initializer list, in some permutation.
+         *
+         * Uses the provided predicate `predicate` to do the comparisons
+         * (defaulting to `std::equal_to`)
+         */
+        template <typename T,
+                  typename Equality = decltype( std::equal_to<>{} )>
+        constexpr
+        UnorderedRangeEqualsMatcher<std::initializer_list<T>, Equality>
+        UnorderedRangeEquals( std::initializer_list<T> range,
+                              Equality&& predicate = std::equal_to<>{} ) {
+            return { range, CATCH_FORWARD( predicate ) };
+        }
     } // namespace Matchers
 } // namespace Catch
 
@@ -13869,7 +13940,7 @@ namespace Catch {
         : CumulativeReporterBase(CATCH_MOVE(config))
         , xml(m_stream) {
             m_preferences.shouldRedirectStdOut = true;
-            m_preferences.shouldReportAllAssertions = true;
+            m_preferences.shouldReportAllAssertions = false;
             m_shouldStoreSuccesfulAssertions = false;
         }
 

fuzzing/CMakeLists.txt

@@ -15,6 +15,6 @@ target_compile_features(fuzzhelper PUBLIC cxx_std_17)
 target_link_options(fuzzhelper PUBLIC "-fsanitize=fuzzer")
 
 foreach(fuzzer TestSpecParser XmlWriter textflow)
-add_executable(fuzz_${fuzzer} fuzz_${fuzzer}.cpp)
-target_link_libraries(fuzz_${fuzzer} PRIVATE fuzzhelper)
+  add_executable(fuzz_${fuzzer} fuzz_${fuzzer}.cpp)
+  target_link_libraries(fuzz_${fuzzer} PRIVATE fuzzhelper)
 endforeach()

fuzzing/NullOStream.h

@@ -16,7 +16,7 @@ class NullStreambuf : public std::streambuf {
   char dummyBuffer[64];
 
 protected:
-  virtual int overflow(int c) override final;
+  virtual int overflow(int c) final;
 };
 
 class NullOStream final : private NullStreambuf, public std::ostream {

meson.build

@@ -8,7 +8,7 @@
 project(
   'catch2',
   'cpp',
-  version: '3.7.0', # CML version placeholder, don't delete
+  version: '3.8.1', # CML version placeholder, don't delete
   license: 'BSL-1.0',
   meson_version: '>=0.54.1',
 )

meson_options.txt

@@ -1 +1,2 @@
 option('tests', type: 'boolean', value: true, description: 'Build the unit tests')
+option('install', type: 'boolean', value: true, description: 'Install the library')

src/CMakeLists.txt

@@ -40,7 +40,6 @@ set(BENCHMARK_SOURCES
 )
 set(BENCHMARK_FILES ${BENCHMARK_HEADERS} ${BENCHMARK_SOURCES})
 
-
 set(IMPL_HEADERS
  "${PROJECT_BINARY_DIR}/generated-includes/catch2/catch_user_config.hpp"
   ${SOURCES_DIR}/catch_user_config.hpp.in
@@ -59,6 +58,7 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/catch_template_test_macros.hpp
   ${SOURCES_DIR}/catch_test_case_info.hpp
   ${SOURCES_DIR}/catch_test_macros.hpp
+  ${SOURCES_DIR}/catch_test_run_info.hpp
   ${SOURCES_DIR}/catch_test_spec.hpp
   ${SOURCES_DIR}/catch_timer.hpp
   ${SOURCES_DIR}/catch_tostring.hpp
@@ -74,6 +74,7 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/internal/catch_compiler_capabilities.hpp
   ${SOURCES_DIR}/internal/catch_config_android_logwrite.hpp
   ${SOURCES_DIR}/internal/catch_config_counter.hpp
+  ${SOURCES_DIR}/internal/catch_config_prefix_messages.hpp
   ${SOURCES_DIR}/internal/catch_config_static_analysis_support.hpp
   ${SOURCES_DIR}/internal/catch_config_uncaught_exceptions.hpp
   ${SOURCES_DIR}/internal/catch_config_wchar.hpp
@@ -135,7 +136,6 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/internal/catch_test_failure_exception.hpp
   ${SOURCES_DIR}/internal/catch_test_macro_impl.hpp
   ${SOURCES_DIR}/internal/catch_test_registry.hpp
-  ${SOURCES_DIR}/internal/catch_test_run_info.hpp
   ${SOURCES_DIR}/internal/catch_test_spec_parser.hpp
   ${SOURCES_DIR}/internal/catch_textflow.hpp
   ${SOURCES_DIR}/internal/catch_to_string.hpp
@@ -144,6 +144,7 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/internal/catch_uniform_integer_distribution.hpp
   ${SOURCES_DIR}/internal/catch_unique_name.hpp
   ${SOURCES_DIR}/internal/catch_unique_ptr.hpp
+  ${SOURCES_DIR}/internal/catch_unreachable.hpp
   ${SOURCES_DIR}/internal/catch_void_type.hpp
   ${SOURCES_DIR}/internal/catch_wildcard_pattern.hpp
   ${SOURCES_DIR}/internal/catch_windows_h_proxy.hpp
@@ -194,7 +195,6 @@ set(IMPL_SOURCES
   ${SOURCES_DIR}/internal/catch_random_seed_generation.cpp
   ${SOURCES_DIR}/internal/catch_reporter_registry.cpp
   ${SOURCES_DIR}/internal/catch_reporter_spec_parser.cpp
-  ${SOURCES_DIR}/internal/catch_result_type.cpp
   ${SOURCES_DIR}/internal/catch_reusable_string_stream.cpp
   ${SOURCES_DIR}/internal/catch_run_context.cpp
   ${SOURCES_DIR}/internal/catch_section.cpp
@@ -348,25 +348,23 @@ source_group("generated headers"
 )
 
 add_library(Catch2 ${ALL_FILES})
-if (CATCH_ENABLE_REPRODUCIBLE_BUILD)
-    add_build_reproducibility_settings(Catch2)
+if(CATCH_ENABLE_REPRODUCIBLE_BUILD)
+  add_build_reproducibility_settings(Catch2)
 endif()
 add_library(Catch2::Catch2 ALIAS Catch2)
 
-if (ANDROID)
-    target_link_libraries(Catch2 PRIVATE log)
+if(ANDROID)
+  target_link_libraries(Catch2 PRIVATE log)
 endif()
 
 set_target_properties(Catch2 PROPERTIES
-                          DEBUG_POSTFIX "d"
-                                VERSION ${PROJECT_VERSION}
-                              SOVERSION ${PROJECT_VERSION})
+  DEBUG_POSTFIX "d"
+  VERSION ${PROJECT_VERSION}
+  SOVERSION ${PROJECT_VERSION}
+)
 
 # require C++14
-target_compile_features(Catch2
-  PUBLIC
-    cxx_std_14
-)
+target_compile_features(Catch2 PUBLIC cxx_std_14)
 
 configure_file(
   "${SOURCES_DIR}/catch_user_config.hpp.in"
@@ -382,105 +380,97 @@ target_include_directories(Catch2
 
 
 add_library(Catch2WithMain
-    ${SOURCES_DIR}/internal/catch_main.cpp
+  ${SOURCES_DIR}/internal/catch_main.cpp
 )
-if (CATCH_ENABLE_REPRODUCIBLE_BUILD)
-    add_build_reproducibility_settings(Catch2WithMain)
+if(CATCH_ENABLE_REPRODUCIBLE_BUILD)
+  add_build_reproducibility_settings(Catch2WithMain)
 endif()
 add_library(Catch2::Catch2WithMain ALIAS Catch2WithMain)
 target_link_libraries(Catch2WithMain PUBLIC Catch2)
 set_target_properties(Catch2WithMain
   PROPERTIES
     OUTPUT_NAME "Catch2Main"
-        VERSION ${PROJECT_VERSION}
-      SOVERSION ${PROJECT_VERSION}
+    VERSION ${PROJECT_VERSION}
+    SOVERSION ${PROJECT_VERSION}
 )
 set_target_properties(Catch2WithMain PROPERTIES DEBUG_POSTFIX "d")
 
-if (NOT_SUBPROJECT)
-    # create and install an export set for catch target as Catch2::Catch
-    install(
-      TARGETS
-        Catch2
-        Catch2WithMain
-      EXPORT
-        Catch2Targets
-      LIBRARY DESTINATION
-        ${CMAKE_INSTALL_LIBDIR}
-      ARCHIVE DESTINATION
-        ${CMAKE_INSTALL_LIBDIR}
-      RUNTIME DESTINATION
-        ${CMAKE_INSTALL_BINDIR}
-    )
+if(NOT_SUBPROJECT)
+  # create and install an export set for catch target as Catch2::Catch
+  install(
+    TARGETS
+      Catch2
+      Catch2WithMain
+    EXPORT
+      Catch2Targets
+    LIBRARY DESTINATION
+      ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION
+      ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION
+      ${CMAKE_INSTALL_BINDIR}
+  )
 
-
-    install(
-      EXPORT
-        Catch2Targets
-      NAMESPACE
-        Catch2::
-      DESTINATION
-        ${CATCH_CMAKE_CONFIG_DESTINATION}
-    )
-    # Install the headers
-    install(
-      DIRECTORY
-        "${SOURCES_DIR}"
-        "${PROJECT_BINARY_DIR}/generated-includes/catch2" # Also install the generated header
-      DESTINATION
-        "${CMAKE_INSTALL_INCLUDEDIR}"
-      FILES_MATCHING
-        PATTERN "*.hpp"
-    )
+  install(
+    EXPORT
+      Catch2Targets
+    NAMESPACE
+      Catch2::
+    DESTINATION
+      ${CATCH_CMAKE_CONFIG_DESTINATION}
+  )
+  # Install the headers
+  install(
+    DIRECTORY
+      "${SOURCES_DIR}"
+      "${PROJECT_BINARY_DIR}/generated-includes/catch2" # Also install the generated header
+    DESTINATION
+      "${CMAKE_INSTALL_INCLUDEDIR}"
+    FILES_MATCHING
+      PATTERN "*.hpp"
+  )
 endif()
 
 # Some tests require a full recompilation of Catch2 lib with different
 # compilation flags. They can link against this target to recompile all
 # the sources into the binary.
-if (CATCH_BUILD_EXAMPLES OR CATCH_BUILD_EXTRA_TESTS)
-    add_library(Catch2_buildall_interface INTERFACE)
-    target_sources(Catch2_buildall_interface INTERFACE
-      ${ALL_FILES}
-      # Also include main entry point
-      ${SOURCES_DIR}/internal/catch_main.cpp
-    )
-    target_include_directories(Catch2_buildall_interface
-      INTERFACE
-        $<BUILD_INTERFACE:${SOURCES_DIR}/..>
-        $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/generated-includes>
-        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-    )
-    target_compile_definitions(Catch2_buildall_interface
-      INTERFACE
-        CATCH_CONFIG_STATIC
-    )
-    target_compile_features(Catch2_buildall_interface
-      INTERFACE
-        cxx_std_14
-    )
+if(CATCH_BUILD_EXAMPLES OR CATCH_BUILD_EXTRA_TESTS)
+  add_library(Catch2_buildall_interface INTERFACE)
+  target_sources(Catch2_buildall_interface INTERFACE
+    ${ALL_FILES}
+    # Also include main entry point
+    ${SOURCES_DIR}/internal/catch_main.cpp
+  )
+  target_include_directories(Catch2_buildall_interface
+    INTERFACE
+      $<BUILD_INTERFACE:${SOURCES_DIR}/..>
+      $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/generated-includes>
+      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  )
+  target_compile_definitions(Catch2_buildall_interface INTERFACE CATCH_CONFIG_STATIC)
+  target_compile_features(Catch2_buildall_interface INTERFACE cxx_std_14)
 endif()
 
-list(APPEND CATCH_WARNING_TARGETS Catch2 Catch2WithMain)
-set(CATCH_WARNING_TARGETS ${CATCH_WARNING_TARGETS} PARENT_SCOPE)
-
+list(APPEND CATCH_IMPL_TARGETS Catch2 Catch2WithMain)
+set(CATCH_IMPL_TARGETS ${CATCH_IMPL_TARGETS} PARENT_SCOPE)
 
 # We still do not support building dynamic library with hidden visibility
 # so we want to check & warn users if they do this. However, we won't abort
 # the configuration step so that we don't have to also provide an override.
-if (BUILD_SHARED_LIBS)
+if(BUILD_SHARED_LIBS)
+  set_target_properties(Catch2 Catch2WithMain
+    PROPERTIES
+      WINDOWS_EXPORT_ALL_SYMBOLS ON
+  )
+
+  get_target_property(_VisPreset Catch2 CXX_VISIBILITY_PRESET)
+  if(NOT MSVC AND _VisPreset STREQUAL "hidden")
     set_target_properties(Catch2 Catch2WithMain
       PROPERTIES
-        WINDOWS_EXPORT_ALL_SYMBOLS ON
+        CXX_VISIBILITY_PRESET "default"
+        VISIBILITY_INLINES_HIDDEN OFF
     )
-
-    get_target_property(_VisPreset Catch2 CXX_VISIBILITY_PRESET)
-    if (NOT MSVC AND _VisPreset STREQUAL "hidden")
-        set_target_properties(Catch2 Catch2WithMain
-          PROPERTIES
-            CXX_VISIBILITY_PRESET "default"
-            VISIBILITY_INLINES_HIDDEN OFF
-        )
-        message(WARNING "Setting Catch2's visibility to default."
-                        " Hidden visibility is not supported.")
-    endif()
+    message(WARNING "Setting Catch2's visibility to default."
+                    " Hidden visibility is not supported.")
+  endif()
 endif()

src/catch2/benchmark/catch_benchmark.hpp

@@ -97,7 +97,7 @@ namespace Catch {
             }
 
             // sets lambda to be used in fun *and* executes benchmark!
-            template <typename Fun, std::enable_if_t<!Detail::is_related<Fun, Benchmark>::value, int> = 0>
+            template <typename Fun, std::enable_if_t<!Detail::is_related_v<Fun, Benchmark>, int> = 0>
                 Benchmark & operator=(Fun func) {
                 auto const* cfg = getCurrentContext().getConfig();
                 if (!cfg->skipBenchmarks()) {

src/catch2/benchmark/catch_outlier_classification.hpp

@@ -19,7 +19,7 @@ namespace Catch {
             int high_mild = 0;      // 1.5 to 3 times IQR above Q3
             int high_severe = 0;    // more than 3 times IQR above Q3
 
-            int total() const {
+            constexpr int total() const {
                 return low_severe + low_mild + high_mild + high_severe;
             }
         };

src/catch2/benchmark/detail/catch_benchmark_function.hpp

@@ -21,8 +21,7 @@ namespace Catch {
     namespace Benchmark {
         namespace Detail {
             template <typename T, typename U>
-            struct is_related
-                : std::is_same<std::decay_t<T>, std::decay_t<U>> {};
+            static constexpr bool is_related_v = std::is_same<std::decay_t<T>, std::decay_t<U>>::value;
 
             /// We need to reinvent std::function because every piece of code that might add overhead
             /// in a measurement context needs to have consistent performance characteristics so that we
@@ -63,7 +62,7 @@ namespace Catch {
                 BenchmarkFunction();
 
                 template <typename Fun,
-                    std::enable_if_t<!is_related<Fun, BenchmarkFunction>::value, int> = 0>
+                    std::enable_if_t<!is_related_v<Fun, BenchmarkFunction>, int> = 0>
                     BenchmarkFunction(Fun&& fun)
                     : f(new model<std::decay_t<Fun>>(CATCH_FORWARD(fun))) {}
 

src/catch2/benchmark/detail/catch_estimate_clock.hpp

@@ -15,7 +15,6 @@
 #include <catch2/benchmark/detail/catch_stats.hpp>
 #include <catch2/benchmark/detail/catch_measure.hpp>
 #include <catch2/benchmark/detail/catch_run_for_at_least.hpp>
-#include <catch2/benchmark/catch_clock.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>
 
 #include <algorithm>

src/catch2/benchmark/detail/catch_stats.cpp

@@ -178,7 +178,7 @@ namespace Catch {
                                              double diff = b - m;
                                              return a + diff * diff;
                                          } ) /
-                        ( last - first );
+                        static_cast<double>( last - first );
                     return std::sqrt( variance );
                 }
 
@@ -213,7 +213,7 @@ namespace Catch {
                                               double* first,
                                               double* last ) {
                 auto count = last - first;
-                double idx = (count - 1) * k / static_cast<double>(q);
+                double idx = static_cast<double>((count - 1) * k) / static_cast<double>(q);
                 int j = static_cast<int>(idx);
                 double g = idx - j;
                 std::nth_element(first, first + j, last);
@@ -316,10 +316,10 @@ namespace Catch {
 
                 double accel = sum_cubes / ( 6 * std::pow( sum_squares, 1.5 ) );
                 long n = static_cast<long>( resample.size() );
-                double prob_n =
+                double prob_n = static_cast<double>(
                     std::count_if( resample.begin(),
                                    resample.end(),
-                                   [point]( double x ) { return x < point; } ) /
+                                   [point]( double x ) { return x < point; } )) /
                     static_cast<double>( n );
                 // degenerate case with uniform samples
                 if ( Catch::Detail::directCompare( prob_n, 0. ) ) {

src/catch2/benchmark/detail/catch_timing.hpp

@@ -13,8 +13,6 @@
 #include <catch2/benchmark/catch_clock.hpp>
 #include <catch2/benchmark/detail/catch_complete_invoke.hpp>
 
-#include <type_traits>
-
 namespace Catch {
     namespace Benchmark {
         template <typename Result>

src/catch2/catch_all.hpp

@@ -37,6 +37,7 @@
 #include <catch2/catch_template_test_macros.hpp>
 #include <catch2/catch_test_case_info.hpp>
 #include <catch2/catch_test_macros.hpp>
+#include <catch2/catch_test_run_info.hpp>
 #include <catch2/catch_test_spec.hpp>
 #include <catch2/catch_timer.hpp>
 #include <catch2/catch_tostring.hpp>
@@ -117,7 +118,6 @@
 #include <catch2/internal/catch_test_failure_exception.hpp>
 #include <catch2/internal/catch_test_macro_impl.hpp>
 #include <catch2/internal/catch_test_registry.hpp>
-#include <catch2/internal/catch_test_run_info.hpp>
 #include <catch2/internal/catch_test_spec_parser.hpp>
 #include <catch2/internal/catch_textflow.hpp>
 #include <catch2/internal/catch_to_string.hpp>
@@ -126,6 +126,7 @@
 #include <catch2/internal/catch_uniform_integer_distribution.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>
+#include <catch2/internal/catch_unreachable.hpp>
 #include <catch2/internal/catch_void_type.hpp>
 #include <catch2/internal/catch_wildcard_pattern.hpp>
 #include <catch2/internal/catch_xmlwriter.hpp>

src/catch2/catch_assertion_result.cpp

@@ -11,7 +11,7 @@
 
 namespace Catch {
 
-    AssertionResultData::AssertionResultData(ResultWas::OfType _resultType, LazyExpression const & _lazyExpression):
+    AssertionResultData::AssertionResultData(ResultWas::OfType _resultType, LazyExpression const& _lazyExpression):
         lazyExpression(_lazyExpression),
         resultType(_resultType) {}
 

src/catch2/catch_config.hpp

@@ -76,7 +76,7 @@ namespace Catch {
         WarnAbout::What warnings = WarnAbout::Nothing;
         ShowDurations showDurations = ShowDurations::DefaultForReporter;
         double minDuration = -1;
-        TestRunOrder runOrder = TestRunOrder::Declared;
+        TestRunOrder runOrder = TestRunOrder::Randomized;
         ColourMode defaultColourMode = ColourMode::PlatformDefault;
         WaitForKeypress::When waitForKeypress = WaitForKeypress::Never;
 

src/catch2/catch_message.hpp

@@ -94,7 +94,7 @@ namespace Catch {
     do { \
         Catch::AssertionHandler catchAssertionHandler( macroName##_catch_sr, CATCH_INTERNAL_LINEINFO, Catch::StringRef(), resultDisposition ); \
         catchAssertionHandler.handleMessage( messageType, ( Catch::MessageStream() << __VA_ARGS__ + ::Catch::StreamEndStop() ).m_stream.str() ); \
-        INTERNAL_CATCH_REACT( catchAssertionHandler ) \
+        catchAssertionHandler.complete(); \
     } while( false )
 
 ///////////////////////////////////////////////////////////////////////////////

src/catch2/catch_session.cpp

@@ -25,7 +25,6 @@
 #include <catch2/internal/catch_stdstreams.hpp>
 #include <catch2/internal/catch_istream.hpp>
 
-#include <algorithm>
 #include <cassert>
 #include <exception>
 #include <iomanip>
@@ -34,8 +33,6 @@
 namespace Catch {
 
     namespace {
-        const int MaxExitCode = 255;
-
         IEventListenerPtr createReporter(std::string const& reporterName, ReporterConfig&& config) {
             auto reporter = Catch::getRegistryHub().getReporterRegistry().create(reporterName, CATCH_MOVE(config));
             CATCH_ENFORCE(reporter, "No reporter registered with name: '" << reporterName << '\'');
@@ -198,8 +195,7 @@ namespace Catch {
     }
 
     int Session::applyCommandLine( int argc, char const * const * argv ) {
-        if( m_startupExceptions )
-            return 1;
+        if ( m_startupExceptions ) { return UnspecifiedErrorExitCode; }
 
         auto result = m_cli.parse( Clara::Args( argc, argv ) );
 
@@ -215,7 +211,7 @@ namespace Catch {
                 << TextFlow::Column( result.errorMessage() ).indent( 2 )
                 << "\n\n";
             errStream->stream() << "Run with -? for usage\n\n" << std::flush;
-            return MaxExitCode;
+            return UnspecifiedErrorExitCode;
         }
 
         if( m_configData.showHelp )
@@ -285,8 +281,7 @@ namespace Catch {
     }
 
     int Session::runInternal() {
-        if( m_startupExceptions )
-            return 1;
+        if ( m_startupExceptions ) { return UnspecifiedErrorExitCode; }
 
         if (m_configData.showHelp || m_configData.libIdentify) {
             return 0;
@@ -297,7 +292,7 @@ namespace Catch {
                           << ") must be greater than the shard index ("
                           << m_configData.shardIndex << ")\n"
                           << std::flush;
-            return 1;
+            return UnspecifiedErrorExitCode;
         }
 
         CATCH_TRY {
@@ -320,7 +315,7 @@ namespace Catch {
                 for ( auto const& spec : invalidSpecs ) {
                     reporter->reportInvalidTestSpec( spec );
                 }
-                return 1;
+                return InvalidTestSpecExitCode;
             }
 
 
@@ -334,29 +329,29 @@ namespace Catch {
 
             if ( tests.hadUnmatchedTestSpecs()
                 && m_config->warnAboutUnmatchedTestSpecs() ) {
-                return 3;
+                // UnmatchedTestSpecExitCode
+                return UnmatchedTestSpecExitCode;
             }
 
             if ( totals.testCases.total() == 0
                 && !m_config->zeroTestsCountAsSuccess() ) {
-                return 2;
+                return NoTestsRunExitCode;
             }
 
             if ( totals.testCases.total() > 0 &&
                  totals.testCases.total() == totals.testCases.skipped
                 && !m_config->zeroTestsCountAsSuccess() ) {
-                return 4;
+                return AllTestsSkippedExitCode;
             }
 
-            // Note that on unices only the lower 8 bits are usually used, clamping
-            // the return value to 255 prevents false negative when some multiple
-            // of 256 tests has failed
-            return (std::min) (MaxExitCode, static_cast<int>(totals.assertions.failed));
+            if ( totals.assertions.failed ) { return TestFailureExitCode; }
+            return 0;
+
         }
 #if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
         catch( std::exception& ex ) {
             Catch::cerr() << ex.what() << '\n' << std::flush;
-            return MaxExitCode;
+            return UnspecifiedErrorExitCode;
         }
 #endif
     }

src/catch2/catch_session.hpp

@@ -16,6 +16,14 @@
 
 namespace Catch {
 
+    // TODO: Use C++17 `inline` variables
+    constexpr int UnspecifiedErrorExitCode = 1;
+    constexpr int NoTestsRunExitCode = 2;
+    constexpr int UnmatchedTestSpecExitCode = 3;
+    constexpr int AllTestsSkippedExitCode = 4;
+    constexpr int InvalidTestSpecExitCode = 5;
+    constexpr int TestFailureExitCode = 42;
+
     class Session : Detail::NonCopyable {
     public:
 

src/catch2/catch_tag_alias_autoregistrar.hpp

@@ -23,7 +23,7 @@ namespace Catch {
 #define CATCH_REGISTER_TAG_ALIAS( alias, spec ) \
     CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
     CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
-    namespace{ Catch::RegistrarForTagAliases INTERNAL_CATCH_UNIQUE_NAME( AutoRegisterTagAlias )( alias, spec, CATCH_INTERNAL_LINEINFO ); } \
+    namespace{ const Catch::RegistrarForTagAliases INTERNAL_CATCH_UNIQUE_NAME( AutoRegisterTagAlias )( alias, spec, CATCH_INTERNAL_LINEINFO ); } \
     CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION
 
 #endif // CATCH_TAG_ALIAS_AUTOREGISTRAR_HPP_INCLUDED

src/catch2/catch_test_case_info.cpp

@@ -22,26 +22,26 @@ namespace Catch {
         static_assert(sizeof(TestCaseProperties) == sizeof(TCP_underlying_type),
                       "The size of the TestCaseProperties is different from the assumed size");
 
-        TestCaseProperties operator|(TestCaseProperties lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties operator|(TestCaseProperties lhs, TestCaseProperties rhs) {
             return static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) | static_cast<TCP_underlying_type>(rhs)
             );
         }
 
-        TestCaseProperties& operator|=(TestCaseProperties& lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties& operator|=(TestCaseProperties& lhs, TestCaseProperties rhs) {
             lhs = static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) | static_cast<TCP_underlying_type>(rhs)
             );
             return lhs;
         }
 
-        TestCaseProperties operator&(TestCaseProperties lhs, TestCaseProperties rhs) {
+        constexpr TestCaseProperties operator&(TestCaseProperties lhs, TestCaseProperties rhs) {
             return static_cast<TestCaseProperties>(
                 static_cast<TCP_underlying_type>(lhs) & static_cast<TCP_underlying_type>(rhs)
             );
         }
 
-        bool applies(TestCaseProperties tcp) {
+        constexpr bool applies(TestCaseProperties tcp) {
             static_assert(static_cast<TCP_underlying_type>(TestCaseProperties::None) == 0,
                           "TestCaseProperties::None must be equal to 0");
             return tcp != TestCaseProperties::None;
@@ -80,7 +80,7 @@ namespace Catch {
             return "Anonymous test case " + std::to_string(++counter);
         }
 
-        StringRef extractFilenamePart(StringRef filename) {
+        constexpr StringRef extractFilenamePart(StringRef filename) {
             size_t lastDot = filename.size();
             while (lastDot > 0 && filename[lastDot - 1] != '.') {
                 --lastDot;
@@ -98,7 +98,7 @@ namespace Catch {
         }
 
         // Returns the upper bound on size of extra tags ([#file]+[.])
-        size_t sizeOfExtraTags(StringRef filepath) {
+        constexpr size_t sizeOfExtraTags(StringRef filepath) {
             // [.] is 3, [#] is another 3
             const size_t extras = 3 + 3;
             return extractFilenamePart(filepath).size() + extras;
@@ -259,8 +259,4 @@ namespace Catch {
         return lhs.tags < rhs.tags;
     }
 
-    TestCaseInfo const& TestCaseHandle::getTestCaseInfo() const {
-        return *m_info;
-    }
-
 } // end namespace Catch

src/catch2/catch_test_case_info.hpp

@@ -109,7 +109,7 @@ namespace Catch {
         TestCaseInfo* m_info;
         ITestInvoker* m_invoker;
     public:
-        TestCaseHandle(TestCaseInfo* info, ITestInvoker* invoker) :
+        constexpr TestCaseHandle(TestCaseInfo* info, ITestInvoker* invoker) :
             m_info(info), m_invoker(invoker) {}
 
         void prepareTestCase() const {
@@ -124,7 +124,9 @@ namespace Catch {
             m_invoker->invoke();
         }
 
-        TestCaseInfo const& getTestCaseInfo() const;
+        constexpr TestCaseInfo const& getTestCaseInfo() const {
+            return *m_info;
+        }
     };
 
     Detail::unique_ptr<TestCaseInfo>

src/catch2/catch_test_macros.hpp

@@ -14,6 +14,7 @@
 #include <catch2/internal/catch_section.hpp>
 #include <catch2/internal/catch_test_registry.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
+#include <catch2/internal/catch_unreachable.hpp>
 
 
 // All of our user-facing macros support configuration toggle, that
@@ -47,10 +48,16 @@
   #define CATCH_REGISTER_TEST_CASE( Function, ... ) INTERNAL_CATCH_REGISTER_TESTCASE( Function, __VA_ARGS__ )
   #define CATCH_SECTION( ... ) INTERNAL_CATCH_SECTION( __VA_ARGS__ )
   #define CATCH_DYNAMIC_SECTION( ... ) INTERNAL_CATCH_DYNAMIC_SECTION( __VA_ARGS__ )
-  #define CATCH_FAIL( ... ) INTERNAL_CATCH_MSG( "CATCH_FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+  #define CATCH_FAIL( ... ) do { \
+           INTERNAL_CATCH_MSG("CATCH_FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ );  \
+           Catch::Detail::Unreachable(); \
+         } while ( false )
   #define CATCH_FAIL_CHECK( ... ) INTERNAL_CATCH_MSG( "CATCH_FAIL_CHECK", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
   #define CATCH_SUCCEED( ... ) INTERNAL_CATCH_MSG( "CATCH_SUCCEED", Catch::ResultWas::Ok, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
-  #define CATCH_SKIP( ... ) INTERNAL_CATCH_MSG( "SKIP", Catch::ResultWas::ExplicitSkip, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+  #define CATCH_SKIP( ... ) do { \
+           INTERNAL_CATCH_MSG( "CATCH_SKIP", Catch::ResultWas::ExplicitSkip, Catch::ResultDisposition::Normal, __VA_ARGS__ ); \
+           Catch::Detail::Unreachable(); \
+         } while (false)
 
 
   #if !defined(CATCH_CONFIG_RUNTIME_STATIC_REQUIRE)
@@ -148,10 +155,16 @@
   #define REGISTER_TEST_CASE( Function, ... ) INTERNAL_CATCH_REGISTER_TESTCASE( Function, __VA_ARGS__ )
   #define SECTION( ... ) INTERNAL_CATCH_SECTION( __VA_ARGS__ )
   #define DYNAMIC_SECTION( ... ) INTERNAL_CATCH_DYNAMIC_SECTION( __VA_ARGS__ )
-  #define FAIL( ... ) INTERNAL_CATCH_MSG( "FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+  #define FAIL( ... ) do { \
+           INTERNAL_CATCH_MSG( "FAIL", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::Normal, __VA_ARGS__ ); \
+           Catch::Detail::Unreachable(); \
+         } while (false)
   #define FAIL_CHECK( ... ) INTERNAL_CATCH_MSG( "FAIL_CHECK", Catch::ResultWas::ExplicitFailure, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
   #define SUCCEED( ... ) INTERNAL_CATCH_MSG( "SUCCEED", Catch::ResultWas::Ok, Catch::ResultDisposition::ContinueOnFailure, __VA_ARGS__ )
-  #define SKIP( ... ) INTERNAL_CATCH_MSG( "SKIP", Catch::ResultWas::ExplicitSkip, Catch::ResultDisposition::Normal, __VA_ARGS__ )
+  #define SKIP( ... ) do { \
+           INTERNAL_CATCH_MSG( "SKIP", Catch::ResultWas::ExplicitSkip, Catch::ResultDisposition::Normal, __VA_ARGS__ ); \
+           Catch::Detail::Unreachable(); \
+         } while (false)
 
 
   #if !defined(CATCH_CONFIG_RUNTIME_STATIC_REQUIRE)

src/catch2/catch_timer.cpp

@@ -13,7 +13,7 @@ namespace Catch {
 
     namespace {
         static auto getCurrentNanosecondsSinceEpoch() -> uint64_t {
-            return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
+            return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::steady_clock::now().time_since_epoch()).count();
         }
     } // end unnamed namespace
 
@@ -30,7 +30,7 @@ namespace Catch {
         return static_cast<unsigned int>(getElapsedMicroseconds()/1000);
     }
     auto Timer::getElapsedSeconds() const -> double {
-        return getElapsedMicroseconds()/1000000.0;
+        return static_cast<double>(getElapsedMicroseconds())/1000000.0;
     }
 
 

src/catch2/catch_tostring.cpp

@@ -11,7 +11,6 @@
 #include <catch2/internal/catch_context.hpp>
 #include <catch2/internal/catch_polyfills.hpp>
 
-#include <cmath>
 #include <iomanip>
 
 namespace Catch {
@@ -22,7 +21,10 @@ namespace Detail {
         const int hexThreshold = 255;
 
         struct Endianness {
-            enum Arch { Big, Little };
+            enum Arch : uint8_t {
+                Big,
+                Little
+            };
 
             static Arch which() {
                 int one = 1;

src/catch2/catch_tostring.hpp

@@ -64,18 +64,14 @@ namespace Catch {
           return rawMemoryToString( &object, sizeof(object) );
         }
 
-        template<typename T>
-        class IsStreamInsertable {
-            template<typename Stream, typename U>
-            static auto test(int)
-                -> decltype(std::declval<Stream&>() << std::declval<U>(), std::true_type());
+        template<typename T,typename = void>
+        static constexpr bool IsStreamInsertable_v = false;
 
-            template<typename, typename>
-            static auto test(...)->std::false_type;
-
-        public:
-            static const bool value = decltype(test<std::ostream, const T&>(0))::value;
-        };
+        template <typename T>
+        static constexpr bool IsStreamInsertable_v<
+            T,
+            decltype( void( std::declval<std::ostream&>() << std::declval<T>() ) )> =
+            true;
 
         template<typename E>
         std::string convertUnknownEnumToString( E e );
@@ -120,7 +116,7 @@ namespace Catch {
     struct StringMaker {
         template <typename Fake = T>
         static
-        std::enable_if_t<::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>
+        std::enable_if_t<::Catch::Detail::IsStreamInsertable_v<Fake>, std::string>
             convert(const Fake& value) {
                 ReusableStringStream rss;
                 // NB: call using the function-like syntax to avoid ambiguity with
@@ -131,7 +127,7 @@ namespace Catch {
 
         template <typename Fake = T>
         static
-        std::enable_if_t<!::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>
+        std::enable_if_t<!::Catch::Detail::IsStreamInsertable_v<Fake>, std::string>
             convert( const Fake& value ) {
 #if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
             return Detail::convertUnstreamable(value);
@@ -523,7 +519,7 @@ namespace Catch {
     }
 
     template<typename R>
-    struct StringMaker<R, std::enable_if_t<is_range<R>::value && !::Catch::Detail::IsStreamInsertable<R>::value>> {
+    struct StringMaker<R, std::enable_if_t<is_range<R>::value && !::Catch::Detail::IsStreamInsertable_v<R>>> {
         static std::string convert( R const& range ) {
             return rangeToString( range );
         }
@@ -634,7 +630,11 @@ struct ratio_string<std::milli> {
 
 #ifdef _MSC_VER
             std::tm timeInfo = {};
-            gmtime_s(&timeInfo, &converted);
+            const auto err = gmtime_s(&timeInfo, &converted);
+            if ( err ) {
+                return "gmtime from provided timepoint has failed. This "
+                       "happens e.g. with pre-1970 dates using Microsoft libc";
+            }
 #else
             std::tm* timeInfo = std::gmtime(&converted);
 #endif

src/catch2/catch_translate_exception.hpp

@@ -25,7 +25,7 @@ namespace Catch {
         class ExceptionTranslator : public IExceptionTranslator {
         public:
 
-            ExceptionTranslator( std::string(*translateFunction)( T const& ) )
+            constexpr ExceptionTranslator( std::string(*translateFunction)( T const& ) )
             : m_translateFunction( translateFunction )
             {}
 
@@ -65,7 +65,7 @@ namespace Catch {
     static std::string translatorName( signature ); \
     CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
     CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
-    namespace{ Catch::ExceptionTranslatorRegistrar INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionRegistrar )( &translatorName ); } \
+    namespace{ const Catch::ExceptionTranslatorRegistrar INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionRegistrar )( &translatorName ); } \
     CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
     static std::string translatorName( signature )
 

src/catch2/catch_user_config.hpp.in

@@ -178,6 +178,15 @@
 #endif
 
 
+#cmakedefine CATCH_CONFIG_USE_BUILTIN_CONSTANT_P
+#cmakedefine CATCH_CONFIG_NO_USE_BUILTIN_CONSTANT_P
+
+#if defined( CATCH_CONFIG_USE_BUILTIN_CONSTANT_P ) && \
+    defined( CATCH_CONFIG_NO_USE_BUILTIN_CONSTANT_P )
+#    error Cannot force USE_BUILTIN_CONSTANT_P to both ON and OFF
+#endif
+
+
 // ------
 // Simple toggle defines
 // their value is never used and they cannot be overridden

src/catch2/catch_version.cpp

@@ -36,7 +36,7 @@ namespace Catch {
     }
 
     Version const& libraryVersion() {
-        static Version version( 3, 7, 0, "", 0 );
+        static Version version( 3, 8, 1, "", 0 );
         return version;
     }
 

src/catch2/catch_version_macros.hpp

@@ -9,7 +9,7 @@
 #define CATCH_VERSION_MACROS_HPP_INCLUDED
 
 #define CATCH_VERSION_MAJOR 3
-#define CATCH_VERSION_MINOR 7
-#define CATCH_VERSION_PATCH 0
+#define CATCH_VERSION_MINOR 8
+#define CATCH_VERSION_PATCH 1
 
 #endif // CATCH_VERSION_MACROS_HPP_INCLUDED

src/catch2/generators/catch_generator_exception.hpp

@@ -23,7 +23,7 @@ namespace Catch {
             m_msg(msg)
         {}
 
-        const char* what() const noexcept override final;
+        const char* what() const noexcept final;
     };
 
 } // end namespace Catch

src/catch2/generators/catch_generators_range.hpp

@@ -91,7 +91,7 @@ public:
 
 template <typename InputIterator,
           typename InputSentinel,
-          typename ResultType = typename std::iterator_traits<InputIterator>::value_type>
+          typename ResultType = std::remove_const_t<typename std::iterator_traits<InputIterator>::value_type>>
 GeneratorWrapper<ResultType> from_range(InputIterator from, InputSentinel to) {
     return GeneratorWrapper<ResultType>(Catch::Detail::make_unique<IteratorGenerator<ResultType>>(from, to));
 }

src/catch2/interfaces/catch_interfaces_capture.hpp

@@ -9,7 +9,6 @@
 #define CATCH_INTERFACES_CAPTURE_HPP_INCLUDED
 
 #include <string>
-#include <chrono>
 
 #include <catch2/internal/catch_stringref.hpp>
 #include <catch2/internal/catch_result_type.hpp>
@@ -77,7 +76,7 @@ namespace Catch {
         virtual void handleMessage
                 (   AssertionInfo const& info,
                     ResultWas::OfType resultType,
-                    StringRef message,
+                    std::string&& message,
                     AssertionReaction& reaction ) = 0;
         virtual void handleUnexpectedExceptionNotThrown
                 (   AssertionInfo const& info,

src/catch2/interfaces/catch_interfaces_config.hpp

@@ -12,7 +12,6 @@
 #include <catch2/internal/catch_stringref.hpp>
 
 #include <chrono>
-#include <iosfwd>
 #include <string>
 #include <vector>
 

src/catch2/interfaces/catch_interfaces_reporter.hpp

@@ -9,18 +9,17 @@
 #define CATCH_INTERFACES_REPORTER_HPP_INCLUDED
 
 #include <catch2/catch_section_info.hpp>
+#include <catch2/catch_test_run_info.hpp>
 #include <catch2/catch_totals.hpp>
 #include <catch2/catch_assertion_result.hpp>
 #include <catch2/internal/catch_message_info.hpp>
 #include <catch2/internal/catch_stringref.hpp>
-#include <catch2/internal/catch_test_run_info.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>
 #include <catch2/benchmark/detail/catch_benchmark_stats.hpp>
 
 #include <map>
 #include <string>
 #include <vector>
-#include <iosfwd>
 
 namespace Catch {
 
@@ -116,6 +115,11 @@ namespace Catch {
         //! Catch2 should call `Reporter::assertionEnded` even for passing
         //! assertions
         bool shouldReportAllAssertions = false;
+        //! Catch2 should call `Reporter::assertionStarting` for all assertions
+        // Defaults to true for backwards compatibility, but none of our current
+        // reporters actually want this, and it enables a fast path in assertion
+        // handling.
+        bool shouldReportAllAssertionStarts = true;
     };
 
     /**

src/catch2/internal/catch_assertion_handler.cpp

@@ -28,8 +28,8 @@ namespace Catch {
     void AssertionHandler::handleExpr( ITransientExpression const& expr ) {
         m_resultCapture.handleExpr( m_assertionInfo, expr, m_reaction );
     }
-    void AssertionHandler::handleMessage(ResultWas::OfType resultType, StringRef message) {
-        m_resultCapture.handleMessage( m_assertionInfo, resultType, message, m_reaction );
+    void AssertionHandler::handleMessage(ResultWas::OfType resultType, std::string&& message) {
+        m_resultCapture.handleMessage( m_assertionInfo, resultType, CATCH_MOVE(message), m_reaction );
     }
 
     auto AssertionHandler::allowThrows() const -> bool {

src/catch2/internal/catch_assertion_handler.hpp

@@ -42,12 +42,12 @@ namespace Catch {
 
 
         template<typename T>
-        void handleExpr( ExprLhs<T> const& expr ) {
+        constexpr void handleExpr( ExprLhs<T> const& expr ) {
             handleExpr( expr.makeUnaryExpr() );
         }
         void handleExpr( ITransientExpression const& expr );
 
-        void handleMessage(ResultWas::OfType resultType, StringRef message);
+        void handleMessage(ResultWas::OfType resultType, std::string&& message);
 
         void handleExceptionThrownAsExpected();
         void handleUnexpectedExceptionNotThrown();

src/catch2/internal/catch_clara.cpp

@@ -76,7 +76,7 @@ namespace Catch {
                                 { TokenType::Argument,
                                   next.substr( delimiterPos + 1, next.size() ) } );
                         } else {
-                            if ( next[1] != '-' && next.size() > 2 ) {
+                            if ( next.size() > 1 && next[1] != '-' && next.size() > 2 ) {
                                 // Combined short args, e.g. "-ab" for "-a -b"
                                 for ( size_t i = 1; i < next.size(); ++i ) {
                                     m_tokenBuffer.push_back(

src/catch2/internal/catch_clara.hpp

@@ -66,15 +66,13 @@ namespace Catch {
             };
 
             template <typename F, typename = void>
-            struct is_unary_function : std::false_type {};
+            static constexpr bool is_unary_function_v = false;
 
             template <typename F>
-            struct is_unary_function<
+            static constexpr bool is_unary_function_v<
                 F,
-                Catch::Detail::void_t<decltype(
-                    std::declval<F>()( fake_arg() ) )
-                >
-            > : std::true_type {};
+                Catch::Detail::void_t<decltype( std::declval<F>()(
+                    fake_arg() ) )>> = true;
 
             // Traits for extracting arg and return type of lambdas (for single
             // argument lambdas)
@@ -507,14 +505,14 @@ namespace Catch {
 
                 template <typename T,
                           typename = typename std::enable_if_t<
-                              !Detail::is_unary_function<T>::value>>
+                              !Detail::is_unary_function_v<T>>>
                 ParserRefImpl( T& ref, StringRef hint ):
                     m_ref( std::make_shared<BoundValueRef<T>>( ref ) ),
                     m_hint( hint ) {}
 
                 template <typename LambdaT,
                           typename = typename std::enable_if_t<
-                              Detail::is_unary_function<LambdaT>::value>>
+                              Detail::is_unary_function_v<LambdaT>>>
                 ParserRefImpl( LambdaT const& ref, StringRef hint ):
                     m_ref( std::make_shared<BoundLambda<LambdaT>>( ref ) ),
                     m_hint( hint ) {}
@@ -581,7 +579,7 @@ namespace Catch {
 
             template <typename LambdaT,
                       typename = typename std::enable_if_t<
-                          Detail::is_unary_function<LambdaT>::value>>
+                          Detail::is_unary_function_v<LambdaT>>>
             Opt( LambdaT const& ref, StringRef hint ):
                 ParserRefImpl( ref, hint ) {}
 
@@ -591,7 +589,7 @@ namespace Catch {
 
             template <typename T,
                       typename = typename std::enable_if_t<
-                          !Detail::is_unary_function<T>::value>>
+                          !Detail::is_unary_function_v<T>>>
             Opt( T& ref, StringRef hint ):
                 ParserRefImpl( ref, hint ) {}
 

src/catch2/internal/catch_compiler_capabilities.hpp

@@ -62,7 +62,7 @@
 #    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
          _Pragma( "GCC diagnostic ignored \"-Wshadow\"" )
 
-#    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__)
+#    define CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P
 
 #endif
 
@@ -86,14 +86,45 @@
 // clang-cl defines _MSC_VER as well as __clang__, which could cause the
 // start/stop internal suppression macros to be double defined.
 #if defined(__clang__) && !defined(_MSC_VER)
-
+#    define CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P
 #    define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "clang diagnostic push" )
 #    define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION  _Pragma( "clang diagnostic pop" )
-
 #endif // __clang__ && !_MSC_VER
 
 #if defined(__clang__)
 
+#    define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wexit-time-destructors\"" ) \
+         _Pragma( "clang diagnostic ignored \"-Wglobal-constructors\"")
+
+#    define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wparentheses\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wunused-variable\"" )
+
+#    if (__clang_major__ >= 20)
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
+             _Pragma( "clang diagnostic ignored \"-Wvariadic-macro-arguments-omitted\"" )
+#    elif (__clang_major__ == 19)
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
+	         _Pragma( "clang diagnostic ignored \"-Wc++20-extensions\"" )
+#    else
+#        define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS
+             _Pragma( "clang diagnostic ignored \"-Wgnu-zero-variadic-macro-arguments\"" )
+#    endif
+
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS \
+         _Pragma( "clang diagnostic ignored \"-Wunused-template\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS \
+        _Pragma( "clang diagnostic ignored \"-Wcomma\"" )
+
+#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
+        _Pragma( "clang diagnostic ignored \"-Wshadow\"" )
+
+#endif // __clang__
+
 // As of this writing, IBM XL's implementation of __builtin_constant_p has a bug
 // which results in calls to destructors being emitted for each temporary,
 // without a matching initialization. In practice, this can result in something
@@ -110,35 +141,11 @@
 // https://developer.nvidia.com/nvidia_bug/3321845.
 //
 // Therefore, `CATCH_INTERNAL_IGNORE_BUT_WARN` is not implemented.
-#  if !defined(__ibmxl__) && !defined(__CUDACC__) && !defined( __NVCOMPILER )
-#    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__) /* NOLINT(cppcoreguidelines-pro-type-vararg, hicpp-vararg) */
-#  endif
+#if defined( __ibmxl__ ) || defined( __CUDACC__ ) || defined( __NVCOMPILER )
+#    define CATCH_INTERNAL_CONFIG_NO_USE_BUILTIN_CONSTANT_P
+#endif
 
 
-#    define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wexit-time-destructors\"" ) \
-         _Pragma( "clang diagnostic ignored \"-Wglobal-constructors\"")
-
-#    define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wparentheses\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wunused-variable\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wgnu-zero-variadic-macro-arguments\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS \
-         _Pragma( "clang diagnostic ignored \"-Wunused-template\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS \
-        _Pragma( "clang diagnostic ignored \"-Wcomma\"" )
-
-#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
-        _Pragma( "clang diagnostic ignored \"-Wshadow\"" )
-
-#endif // __clang__
-
 
 ////////////////////////////////////////////////////////////////////////////////
 // We know some environments not to support full POSIX signals
@@ -362,6 +369,22 @@
 #endif
 
 
+// The goal of this macro is to avoid evaluation of the arguments, but
+// still have the compiler warn on problems inside...
+#if defined( CATCH_INTERNAL_CONFIG_USE_BUILTIN_CONSTANT_P ) && \
+    !defined( CATCH_INTERNAL_CONFIG_NO_USE_BUILTIN_CONSTANT_P ) && !defined(CATCH_CONFIG_USE_BUILTIN_CONSTANT_P)
+#define CATCH_CONFIG_USE_BUILTIN_CONSTANT_P
+#endif
+
+#if defined( CATCH_CONFIG_USE_BUILTIN_CONSTANT_P ) && \
+    !defined( CATCH_CONFIG_NO_USE_BUILTIN_CONSTANT_P )
+#    define CATCH_INTERNAL_IGNORE_BUT_WARN( ... )                                              \
+        (void)__builtin_constant_p( __VA_ARGS__ ) /* NOLINT(cppcoreguidelines-pro-type-vararg, \
+                                                     hicpp-vararg) */
+#else
+#    define CATCH_INTERNAL_IGNORE_BUT_WARN( ... )
+#endif
+
 // Even if we do not think the compiler has that warning, we still have
 // to provide a macro that can be used by the code.
 #if !defined(CATCH_INTERNAL_START_WARNINGS_SUPPRESSION)
@@ -398,13 +421,6 @@
 #    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS
 #endif
 
-
-// The goal of this macro is to avoid evaluation of the arguments, but
-// still have the compiler warn on problems inside...
-#if !defined(CATCH_INTERNAL_IGNORE_BUT_WARN)
-#   define CATCH_INTERNAL_IGNORE_BUT_WARN(...)
-#endif
-
 #if defined(__APPLE__) && defined(__apple_build_version__) && (__clang_major__ < 10)
 #   undef CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS
 #elif defined(__clang__) && (__clang_major__ < 5)

src/catch2/internal/catch_console_colour.cpp

@@ -161,7 +161,7 @@ namespace {
 #endif // Windows/ ANSI/ None
 
 
-#if defined( CATCH_PLATFORM_LINUX ) || defined( CATCH_PLATFORM_MAC )
+#if defined( CATCH_PLATFORM_LINUX ) || defined( CATCH_PLATFORM_MAC ) || defined( __GLIBC__ )
 #    define CATCH_INTERNAL_HAS_ISATTY
 #    include <unistd.h>
 #endif

src/catch2/internal/catch_context.cpp

@@ -27,12 +27,6 @@ namespace Catch {
         return *Context::currentContext;
     }
 
-    void Context::setResultCapture( IResultCapture* resultCapture ) {
-        m_resultCapture = resultCapture;
-    }
-
-    void Context::setConfig( IConfig const* config ) { m_config = config; }
-
     SimplePcg32& sharedRng() {
         static SimplePcg32 s_rng;
         return s_rng;

src/catch2/internal/catch_context.hpp

@@ -26,10 +26,15 @@ namespace Catch {
         friend void cleanUpContext();
 
     public:
-        IResultCapture* getResultCapture() const { return m_resultCapture; }
-        IConfig const* getConfig() const { return m_config; }
-        void setResultCapture( IResultCapture* resultCapture );
-        void setConfig( IConfig const* config );
+        constexpr IResultCapture* getResultCapture() const {
+            return m_resultCapture;
+        }
+        constexpr IConfig const* getConfig() const { return m_config; }
+        constexpr void setResultCapture( IResultCapture* resultCapture ) {
+            m_resultCapture = resultCapture;
+        }
+        constexpr void setConfig( IConfig const* config ) { m_config = config; }
+
     };
 
     Context& getCurrentMutableContext();

src/catch2/internal/catch_decomposer.hpp

@@ -45,7 +45,7 @@
  *    when the compiler handles `ExprLhs<T> == b`, it also tries to resolve
  *    the overload set for `b == ExprLhs<T>`.
  *
- * To accomodate these use cases, decomposer ended up rather complex.
+ * To accommodate these use cases, decomposer ended up rather complex.
  *
  * 1) These types are handled by adding SFINAE overloads to our comparison
  *    operators, checking whether `T == U` are comparable with the given
@@ -157,10 +157,13 @@ namespace Catch {
         bool m_isBinaryExpression;
         bool m_result;
 
+    protected:
+        ~ITransientExpression() = default;
+
     public:
         constexpr auto isBinaryExpression() const -> bool { return m_isBinaryExpression; }
         constexpr auto getResult() const -> bool { return m_result; }
-        //! This function **has** to be overriden by the derived class.
+        //! This function **has** to be overridden by the derived class.
         virtual void streamReconstructedExpression( std::ostream& os ) const;
 
         constexpr ITransientExpression( bool isBinaryExpression, bool result )
@@ -168,17 +171,13 @@ namespace Catch {
             m_result( result )
         {}
 
-        ITransientExpression() = default;
-        ITransientExpression(ITransientExpression const&) = default;
-        ITransientExpression& operator=(ITransientExpression const&) = default;
+        constexpr ITransientExpression( ITransientExpression const& ) = default;
+        constexpr ITransientExpression& operator=( ITransientExpression const& ) = default;
 
         friend std::ostream& operator<<(std::ostream& out, ITransientExpression const& expr) {
             expr.streamReconstructedExpression(out);
             return out;
         }
-
-    protected:
-        ~ITransientExpression() = default;
     };
 
     void formatReconstructedExpression( std::ostream &os, std::string const& lhs, StringRef op, std::string const& rhs );

src/catch2/internal/catch_enforce.hpp

@@ -12,7 +12,7 @@
 #include <catch2/internal/catch_compiler_capabilities.hpp>
 #include <catch2/internal/catch_reusable_string_stream.hpp>
 
-#include <exception>
+#include <exception> // for `std::exception` in no-exception configuration
 
 namespace Catch {
 #if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)

src/catch2/internal/catch_exception_translator_registry.hpp

@@ -11,7 +11,6 @@
 #include <catch2/interfaces/catch_interfaces_exception.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>
 
-#include <vector>
 #include <string>
 
 namespace Catch {

src/catch2/internal/catch_fatal_condition_handler.cpp

@@ -79,7 +79,7 @@ namespace Catch {
     // There is no 1-1 mapping between signals and windows exceptions.
     // Windows can easily distinguish between SO and SigSegV,
     // but SigInt, SigTerm, etc are handled differently.
-    static SignalDefs signalDefs[] = {
+    static constexpr SignalDefs signalDefs[] = {
         { EXCEPTION_ILLEGAL_INSTRUCTION,  "SIGILL - Illegal instruction signal" },
         { EXCEPTION_STACK_OVERFLOW, "SIGSEGV - Stack overflow" },
         { EXCEPTION_ACCESS_VIOLATION, "SIGSEGV - Segmentation violation signal" },
@@ -150,7 +150,7 @@ namespace Catch {
         const char* name;
     };
 
-    static SignalDefs signalDefs[] = {
+    static constexpr SignalDefs signalDefs[] = {
         { SIGINT,  "SIGINT - Terminal interrupt signal" },
         { SIGILL,  "SIGILL - Illegal instruction signal" },
         { SIGFPE,  "SIGFPE - Floating point error signal" },

src/catch2/internal/catch_is_permutation.hpp

@@ -8,8 +8,8 @@
 #ifndef CATCH_IS_PERMUTATION_HPP_INCLUDED
 #define CATCH_IS_PERMUTATION_HPP_INCLUDED
 
-#include <algorithm>
 #include <iterator>
+#include <type_traits>
 
 namespace Catch {
     namespace Detail {
@@ -18,6 +18,7 @@ namespace Catch {
                   typename Sentinel,
                   typename T,
                   typename Comparator>
+        constexpr
         ForwardIter find_sentinel( ForwardIter start,
                                    Sentinel sentinel,
                                    T const& value,
@@ -33,6 +34,7 @@ namespace Catch {
                   typename Sentinel,
                   typename T,
                   typename Comparator>
+        constexpr
         std::ptrdiff_t count_sentinel( ForwardIter start,
                                        Sentinel sentinel,
                                        T const& value,
@@ -46,6 +48,7 @@ namespace Catch {
         }
 
         template <typename ForwardIter, typename Sentinel>
+        constexpr
         std::enable_if_t<!std::is_same<ForwardIter, Sentinel>::value,
                          std::ptrdiff_t>
         sentinel_distance( ForwardIter iter, const Sentinel sentinel ) {
@@ -58,8 +61,8 @@ namespace Catch {
         }
 
         template <typename ForwardIter>
-        std::ptrdiff_t sentinel_distance( ForwardIter first,
-                                          ForwardIter last ) {
+        constexpr std::ptrdiff_t sentinel_distance( ForwardIter first,
+                                                    ForwardIter last ) {
             return std::distance( first, last );
         }
 
@@ -68,11 +71,11 @@ namespace Catch {
                   typename ForwardIter2,
                   typename Sentinel2,
                   typename Comparator>
-        bool check_element_counts( ForwardIter1 first_1,
-                                   const Sentinel1 end_1,
-                                   ForwardIter2 first_2,
-                                   const Sentinel2 end_2,
-                                   Comparator cmp ) {
+        constexpr bool check_element_counts( ForwardIter1 first_1,
+                                             const Sentinel1 end_1,
+                                             ForwardIter2 first_2,
+                                             const Sentinel2 end_2,
+                                             Comparator cmp ) {
             auto cursor = first_1;
             while ( cursor != end_1 ) {
                 if ( find_sentinel( first_1, cursor, *cursor, cmp ) ==
@@ -102,11 +105,11 @@ namespace Catch {
                   typename ForwardIter2,
                   typename Sentinel2,
                   typename Comparator>
-        bool is_permutation( ForwardIter1 first_1,
-                             const Sentinel1 end_1,
-                             ForwardIter2 first_2,
-                             const Sentinel2 end_2,
-                             Comparator cmp ) {
+        constexpr bool is_permutation( ForwardIter1 first_1,
+                                       const Sentinel1 end_1,
+                                       ForwardIter2 first_2,
+                                       const Sentinel2 end_2,
+                                       Comparator cmp ) {
             // TODO: no optimization for stronger iterators, because we would also have to constrain on sentinel vs not sentinel types
             // TODO: Comparator has to be "both sides", e.g. a == b => b == a
             // This skips shared prefix of the two ranges

src/catch2/internal/catch_istream.cpp

@@ -14,8 +14,6 @@
 
 #include <cstdio>
 #include <fstream>
-#include <sstream>
-#include <vector>
 
 namespace Catch {
 

src/catch2/internal/catch_istream.hpp

@@ -12,8 +12,6 @@
 #include <catch2/internal/catch_unique_ptr.hpp>
 
 #include <iosfwd>
-#include <cstddef>
-#include <ostream>
 #include <string>
 
 namespace Catch {