Drop windows-2019 server from list of GitHub Action runners

Passing the CLI argument '--list-tags' outputs a list like:

```
All available tags:
  11  [mytag]
   4  [myothertag]
2 tags
```

However, the width of the tag-count column was previously hardcoded to 2, such that the formatting broke (with the tag names awkwardly misaligned/displaced) for 3+ digit tag counts. This occurred whenever a tag contains one hundred or more tests, and would result in formatting like:

```
All available tags:
  11  [mytag]
  100  [myjumbotag]
   4  [myothertag]
3 tags
```

This patch pre-computes the maximum number of digits among the tag counts, expanding the padding when there are more than 100 tests in a tag (and handling when tags are empty). It now outputs e.g.

```
All available tags:
   11  [mytag]
  100  [myjumbotag]
    4  [myothertag]
3 tags
```

.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

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 +78,117 @@ 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("${CATCH_WARNING_TARGETS}")
+if(CATCH_DEVELOPMENT_BUILD)
+  add_warnings_to_targets("${CATCH_WARNING_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"
+  )
+  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
+    ${CMAKE_CURRENT_BINARY_DIR}/catch2-with-main.pc
+    @ONLY
+  )
+  install(
+    FILES
+      "${CMAKE_CURRENT_BINARY_DIR}/catch2.pc"
+      "${CMAKE_CURRENT_BINARY_DIR}/catch2-with-main.pc"
+    DESTINATION
+      ${PKGCONFIG_INSTALL_DIR}
+  )
 
-    set(CPACK_PACKAGE_CONTACT "https://github.com/catchorg/Catch2/")
-
-
-    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

@@ -0,0 +1,105 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="104.41245mm"
+   height="120.99883mm"
+   viewBox="0 0 101.59999 117.7396"
+   version="1.1"
+   id="svg1"
+   inkscape:version="1.4-beta (62f545ba5e, 2024-04-22)"
+   sodipodi:docname="catch2-c-logo.svg"
+   xml:space="preserve"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/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/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/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)

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
@@ -74,6 +73,7 @@ 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
@@ -194,7 +194,6 @@ 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 +347,23 @@ 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 +379,97 @@ 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)
 
-
 # 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_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_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_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_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 )
             {}
 

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

@@ -20,7 +20,6 @@
 #include <map>
 #include <string>
 #include <vector>
-#include <iosfwd>
 
 namespace Catch {
 

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_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_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 {

src/catch2/internal/catch_lazy_expr.hpp

@@ -22,13 +22,13 @@ 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;
         }
 

src/catch2/internal/catch_noncopyable.hpp

@@ -13,6 +13,7 @@ namespace Catch {
 
         //! Deriving classes become noncopyable and nonmovable
         class NonCopyable {
+        public:
             NonCopyable( NonCopyable const& ) = delete;
             NonCopyable( NonCopyable&& ) = delete;
             NonCopyable& operator=( NonCopyable const& ) = delete;

src/catch2/internal/catch_random_integer_helpers.hpp

@@ -69,7 +69,7 @@ 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;
             }
         };
@@ -187,6 +187,7 @@ 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(
@@ -207,6 +208,7 @@ namespace Catch {
 
         template <typename OriginalType,
                   typename UnsignedType>
+        constexpr
         std::enable_if_t<std::is_unsigned<OriginalType>::value, UnsignedType>
             transposeToNaturalOrder(UnsignedType in) {
             static_assert(

src/catch2/internal/catch_random_number_generator.cpp

@@ -7,6 +7,12 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/internal/catch_random_number_generator.hpp>
 
+#if defined( __clang__ )
+#    define CATCH2_CLANG_NO_SANITIZE_INTEGER \
+        __attribute__( ( no_sanitize( "unsigned-integer-overflow" ) ) )
+#else
+#    define CATCH2_CLANG_NO_SANITIZE_INTEGER
+#endif
 namespace Catch {
 
 namespace {
@@ -16,6 +22,7 @@ namespace {
 #pragma warning(disable:4146) // we negate uint32 during the rotate
 #endif
         // Safe rotr implementation thanks to John Regehr
+        CATCH2_CLANG_NO_SANITIZE_INTEGER
         uint32_t rotate_right(uint32_t val, uint32_t count) {
             const uint32_t mask = 31;
             count &= mask;
@@ -49,10 +56,11 @@ namespace {
         }
     }
 
+    CATCH2_CLANG_NO_SANITIZE_INTEGER
     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;

src/catch2/internal/catch_result_type.cpp

@@ -1,26 +0,0 @@
-
-//              Copyright Catch2 Authors
-// Distributed under the Boost Software License, Version 1.0.
-//   (See accompanying file LICENSE.txt or copy at
-//        https://www.boost.org/LICENSE_1_0.txt)
-
-// SPDX-License-Identifier: BSL-1.0
-#include <catch2/internal/catch_result_type.hpp>
-
-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

src/catch2/internal/catch_result_type.hpp

@@ -33,8 +33,10 @@ 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
@@ -46,11 +48,18 @@ 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
 

src/catch2/internal/catch_run_context.cpp

@@ -361,7 +361,7 @@ namespace Catch {
         auto& currentTracker = m_trackerContext.currentTracker();
         assert(
             currentTracker.nameAndLocation() != nameAndLoc &&
-            "Trying to create tracker for a genreator that already has one" );
+            "Trying to create tracker for a generator that already has one" );
 
         auto newTracker = Catch::Detail::make_unique<Generators::GeneratorTracker>(
             CATCH_MOVE(nameAndLoc), m_trackerContext, &currentTracker );
@@ -632,13 +632,13 @@ 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 ) };
 

src/catch2/internal/catch_run_context.hpp

@@ -55,7 +55,7 @@ namespace Catch {
         void handleMessage
                 (   AssertionInfo const& info,
                     ResultWas::OfType resultType,
-                    StringRef message,
+                    std::string&& message,
                     AssertionReaction& reaction ) override;
         void handleUnexpectedExceptionNotThrown
                 (   AssertionInfo const& info,

src/catch2/internal/catch_section.hpp

@@ -62,7 +62,7 @@ namespace Catch {
 #else
 
 // These section definitions imply that at most one section at one level
-// will be intered (because only one section's __LINE__ can be equal to
+// will be entered (because only one section's __LINE__ can be equal to
 // the dummy `catchInternalSectionHint` variable from `TEST_CASE`).
 
 namespace Catch {

src/catch2/internal/catch_sharding.hpp

@@ -9,7 +9,6 @@
 #define CATCH_SHARDING_HPP_INCLUDED
 
 #include <cassert>
-#include <cmath>
 #include <algorithm>
 
 namespace Catch {

src/catch2/internal/catch_string_manip.cpp

@@ -74,7 +74,7 @@ namespace Catch {
         std::string origStr = CATCH_MOVE(str);
         str.clear();
         // There is at least one replacement, so reserve with the best guess
-        // we can make without actually counting the number of occurences.
+        // we can make without actually counting the number of occurrences.
         str.reserve(origStr.size() - replaceThis.size() + withThis.size());
         do {
             str.append(origStr, copyBegin, i-copyBegin );