Merge branch 'develop' of https://github.com/nlohmann/json into string_view

.github/workflows/macos.yml

@@ -3,15 +3,19 @@ name: macOS
 on: [push, pull_request]
 
 jobs:
-  build:
-
-    runs-on: macos-latest
+  xcode:
+    runs-on: macos-10.15
+    strategy:
+      matrix:
+        xcode: [12.4, 12.3, 12.2, 12.1.1, 12.1, 12, 11.7, 11.6, 11.5, 11.4.1, 11.3.1, 11.2.1, 10.3]
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
 
     steps:
-    - uses: actions/checkout@v2
-    - name: cmake
-      run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
-    - name: build
-      run: cmake --build build --parallel 10
-    - name: test
-      run: cd build ; ctest -j 10 --output-on-failure
+      - uses: actions/checkout@v2
+      - name: cmake
+        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
+      - name: build
+        run: cmake --build build --parallel 10
+      - name: test
+        run: cd build ; ctest -j 10 --output-on-failure

.github/workflows/ubuntu.yml

@@ -17,27 +17,6 @@ jobs:
     - name: build
       run: cmake --build build --target ci_test_clang_cxx20
 
-  ci_clang_analyze:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: install_ninja
-        run: |
-          sudo apt update
-          sudo apt install ninja-build
-        shell: bash
-      - name: install_clang
-        run: |
-          wget https://apt.llvm.org/llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 11
-          sudo apt-get install clang-tools-11
-        shell: bash
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_clang_analyze
-
   ci_test_clang:
     runs-on: ubuntu-latest
     steps:
@@ -69,94 +48,31 @@ jobs:
       - name: build
         run: cmake --build build --target ci_test_gcc
 
-  ci_test_valgrind:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_valgrind
-
-  ci_cppcheck:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_cppcheck
-
-  ci_cpplint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_cpplint
-
-  ci_clang_tidy:
+  ci_static_analysis:
     runs-on: ubuntu-latest
     container: nlohmann/json-ci:latest
+    strategy:
+      matrix:
+        target: [ci_clang_tidy, ci_cppcheck, ci_test_valgrind, ci_test_clang_sanitizer, ci_test_amalgamation, ci_clang_analyze, ci_cpplint]
     steps:
       - uses: actions/checkout@v2
       - name: cmake
         run: cmake -S . -B build -DJSON_CI=On
       - name: build
-        run: cmake --build build --target ci_clang_tidy
+        run: cmake --build build --target ${{ matrix.target }}
 
-  ci_test_amalgamation:
+  ci_cmake_options:
     runs-on: ubuntu-latest
     container: nlohmann/json-ci:latest
+    strategy:
+      matrix:
+        target: [ci_test_diagnostics, ci_test_noexceptions, ci_test_noimplicitconversions]
     steps:
       - uses: actions/checkout@v2
       - name: cmake
         run: cmake -S . -B build -DJSON_CI=On
       - name: build
-        run: cmake --build build --target ci_test_amalgamation
-
-  ci_test_diagnostics:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_diagnostics
-
-  ci_test_noexceptions:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_noexceptions
-
-  ci_test_noimplicitconversions:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_noimplicitconversions
-
-  ci_test_clang_sanitizer:
-    runs-on: ubuntu-latest
-    container: nlohmann/json-ci:latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: cmake
-        run: cmake -S . -B build -DJSON_CI=On
-      - name: build
-        run: cmake --build build --target ci_test_clang_sanitizer
+        run: cmake --build build --target ${{ matrix.target }}
 
   ci_test_coverage:
     runs-on: ubuntu-latest
@@ -177,3 +93,16 @@ jobs:
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: /__w/json/json/build/json.info.filtered.noexcept
+
+  ci_test_compilers:
+    runs-on: ubuntu-latest
+    container: nlohmann/json-ci:latest
+    strategy:
+      matrix:
+        compiler: [g++-4.8, g++-4.9, g++-5, g++-7, g++-8, g++-9, g++-10, clang++-3.5, clang++-3.6, clang++-3.7, clang++-3.8, clang++-3.9, clang++-4.0, clang++-5.0, clang++-6.0, clang++-7, clang++-8, clang++-9, clang++-10]
+    steps:
+      - uses: actions/checkout@v2
+      - name: cmake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: build
+        run: cmake --build build --target ci_test_compiler_${{ matrix.compiler }}
\ No newline at end of file

.github/workflows/windows.yml

@@ -3,51 +3,119 @@ name: Windows
 on: [push, pull_request]
 
 jobs:
+  mingw:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        architecture: [x64, x86]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up MinGW
+        uses: egor-tensin/setup-mingw@v2
+        with:
+          platform: ${{ matrix.architecture }}
+      - name: cmake
+        run: cmake -S . -B build -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
+      - name: build
+        run: cmake --build build --parallel 10
+      - name: test
+        run: cd build ; ctest -j 10 -C Debug --output-on-failure
+
+  msvc2017:
+    runs-on: windows-2016
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        architecture: [Win32, x64]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 15 2017" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_EXE_LINKER_FLAGS="/STACK:4000000"
+      if: matrix.build_type == 'Release' && matrix.architecture == 'x64'
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 15 2017" -A ${{ matrix.architecture }} -DJSON_BuildTests=On
+      if: matrix.build_type == 'Release' && matrix.architecture != 'x64'
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 15 2017" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON
+      if: matrix.build_type == 'Debug'
+    - name: build
+      run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
+    - name: test
+      run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
+
+  msvc2017_latest:
+    runs-on: windows-2016
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 15 2017" -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4"
+    - name: build
+      run: cmake --build build --config Release --parallel 10
+    - name: test
+      run: cd build ; ctest -j 10 -C Release --output-on-failure
+
   msvc2019:
     runs-on: windows-latest
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        architecture: [Win32, x64]
 
     steps:
     - uses: actions/checkout@v2
     - name: cmake
-      run: cmake -S . -B build -G "Visual Studio 16 2019" -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -DJSON_BuildTests=On
+      if: matrix.build_type == 'Release'
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON
+      if: matrix.build_type == 'Debug'
     - name: build
-      run: cmake --build build --parallel 10
+      run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
     - name: test
-      run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure
+      run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
 
-  clang10:
+  msvc2019_latest:
     runs-on: windows-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: install Clang
-        run: curl -fsSL -o LLVM10.exe https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/LLVM-10.0.0-win64.exe ; 7z x LLVM10.exe -y -o"C:/Program Files/LLVM"
-      - name: cmake
-        run: cmake -S . -B build -DCMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang++.exe" -G"MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
-      - name: build
-        run: cmake --build build --parallel 10
-      - name: test
-        run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure
+    - uses: actions/checkout@v2
+    - name: cmake
+      run: cmake -S . -B build -G "Visual Studio 16 2019" -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4"
+    - name: build
+      run: cmake --build build --config Release --parallel 10
+    - name: test
+      run: cd build ; ctest -j 10 -C Release --output-on-failure
 
-  clang-cl-10-x64:
+  clang:
     runs-on: windows-latest
+    strategy:
+      matrix:
+        version: [10, 11]
 
     steps:
       - uses: actions/checkout@v2
+      - name: install Clang
+        run: curl -fsSL -o LLVM${{ matrix.version }}.exe https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.version }}.0.0/LLVM-${{ matrix.version }}.0.0-win64.exe ; 7z x LLVM${{ matrix.version }}.exe -y -o"C:/Program Files/LLVM"
       - name: cmake
-        run: cmake -S . -B build -G "Visual Studio 16 2019" -A x64 -T ClangCL -DJSON_BuildTests=On
+        run: cmake -S . -B build -DCMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang++.exe" -G"MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
       - name: build
-        run: cmake --build build --config Debug --parallel 10
+        run: cmake --build build --parallel 10
       - name: test
         run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure
 
-  clang-cl-10-x86:
+  clang-cl-11:
     runs-on: windows-latest
+    strategy:
+      matrix:
+        architecture: [Win32, x64]
 
     steps:
       - uses: actions/checkout@v2
       - name: cmake
-        run: cmake -S . -B build -G "Visual Studio 16 2019" -A Win32 -T ClangCL -DJSON_BuildTests=On
+        run: cmake -S . -B build -G "Visual Studio 16 2019" -A ${{ matrix.architecture }} -T ClangCL -DJSON_BuildTests=On
       - name: build
         run: cmake --build build --config Debug --parallel 10
       - name: test

.travis.yml

@@ -46,164 +46,16 @@ matrix:
   - os: osx
     osx_image: xcode10.2
 
-  - os: osx
-    osx_image: xcode11.2
-
-  - os: osx
-    osx_image: xcode12
-
   # Linux / GCC
 
   - os: linux
     compiler: gcc
-    env: COMPILER=g++-4.8
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-4.8', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
-    env: COMPILER=g++-4.9
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-4.9', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
-    env: COMPILER=g++-5
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-5', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
     env: COMPILER=g++-6
     addons:
       apt:
         sources: ['ubuntu-toolchain-r-test']
         packages: ['g++-6', 'ninja-build']
 
-  - os: linux
-    compiler: gcc
-    env: COMPILER=g++-7
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-7', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
-    env: COMPILER=g++-8
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-8', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
-    env: COMPILER=g++-9
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-9', 'ninja-build']
-
-  - os: linux
-    compiler: gcc
-    env:
-      - COMPILER=g++-9
-      - CXX_STANDARD=17
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-9', 'ninja-build']
-
-  # Linux / Clang
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-3.5
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.5']
-        packages: ['g++-6', 'clang-3.5', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-3.6
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.6']
-        packages: ['g++-6', 'clang-3.6', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-3.7
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.7']
-        packages: ['g++-6', 'clang-3.7', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-3.8
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-6', 'clang-3.8', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-3.9
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test']
-        packages: ['g++-6', 'clang-3.9', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-4.0
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-4.0']
-        packages: ['g++-6', 'clang-4.0', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-5.0
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-5.0']
-        packages: ['g++-6', 'clang-5.0', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-6.0
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-6.0']
-        packages: ['g++-6', 'clang-6.0', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env: COMPILER=clang++-7
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-7']
-        packages: ['g++-6', 'clang-7', 'ninja-build']
-
-  - os: linux
-    compiler: clang
-    env:
-      - COMPILER=clang++-7
-      - CXX_STANDARD=17
-    addons:
-      apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-7']
-        packages: ['g++-7', 'clang-7', 'ninja-build']
-
 ################
 # build script #
 ################

README.md

@@ -1232,35 +1232,51 @@ The following compilers are currently used in continuous integration at [Travis]
 | Compiler                                                          | Operating System   | CI Provider    |
 |-------------------------------------------------------------------|--------------------|----------------|
 | Apple Clang 10.0.1 (clang-1001.0.46.4); Xcode 10.2.1              | macOS 10.14.4      | Travis         |
-| Apple Clang 11.0.0 (clang-1100.0.33.12); Xcode 11.2.1             | macOS 10.14.6      | Travis         |
-| Apple Clang 11.0.3 (clang-1103.0.32.59); Xcode 11.4.1             | macOS 10.15.4      | GitHub Actions |
-| Apple Clang 12.0.0 (clang-1200.0.22.7); Xcode 11.4.1              | macOS 10.15.5      | Travis         |
-| Clang 3.5.0 (3.5.0-4ubuntu2\~trusty2)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 3.6.2 (3.6.2-svn240577-1\~exp1)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 3.7.1 (3.7.1-svn253571-1\~exp1)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 3.8.0 (3.8.0-2ubuntu3\~trusty5)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 3.9.1 (3.9.1-4ubuntu3\~14.04.3)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 4.0.1 (4.0.1-svn305264-1\~exp1)                             | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 5.0.2 (version 5.0.2-svn328729-1\~exp1\~20180509123505.100) | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 6.0.1 (6.0.1-svn334776-1\~exp1\~20190309042707.121)         | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 7.1.0 (7.1.0-svn353565-1\~exp1\~20190419134007.64)          | Ubuntu 14.04.5 LTS | Travis         |
-| Clang 7.5.0 (Ubuntu 7.5.0-3ubuntu1\~18.04)                        | Ubuntu 18.04.4 LTS | Travis         |
-| Clang 9.0.0 (x86_64-pc-windows-msvc)                              | Windows-10.0.17763 | GitHub Actions |
-| Clang 10.0.0 (x86_64-pc-windows-msvc)                             | Windows-10.0.17763 | GitHub Actions |
-| GCC 4.8.5 (Ubuntu 4.8.5-4ubuntu8\~14.04.2)                        | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 4.9.4 (Ubuntu 4.9.4-2ubuntu1\~14.04.1)                        | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 5.5.0 (Ubuntu 5.5.0-12ubuntu1\~14.04)                         | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 6.5.0 (Ubuntu 6.5.0-2ubuntu1\~14.04.1)                        | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 7.3.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)     | Windows-6.3.9600   | AppVeyor       |
-| GCC 7.5.0 (Ubuntu 7.5.0-3ubuntu1\~14.04.1)                        | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 7.5.0 (Ubuntu 7.5.0-3ubuntu1\~18.04)                          | Ubuntu 18.04.4 LTS | GitHub Actions |
-| GCC 8.4.0 (Ubuntu 8.4.0-1ubuntu1\~14.04)                          | Ubuntu 14.04.5 LTS | Travis         |
-| GCC 9.3.0 (Ubuntu 9.3.0-11ubuntu0\~14.04)                         | Ubuntu 14.04.5 LTS | Travis         |
-| MSVC 19.0.24241.7 (Build Engine version 14.0.25420.1)             | Windows-6.3.9600   | AppVeyor       |
-| MSVC 19.16.27035.0 (15.9.21+g9802d43bc3 for .NET Framework)       | Windows-10.0.14393 | AppVeyor       |
-| MSVC 19.25.28614.0 (Build Engine version 16.5.0+d4cbfca49 for .NET Framework) | Windows-10.0.17763  | AppVeyor       |
-| MSVC 19.25.28614.0 (Build Engine version 16.5.0+d4cbfca49 for .NET Framework) | Windows-10.0.17763  | GitHub Actions |
-| MSVC 19.25.28614.0 (Build Engine version 16.5.0+d4cbfca49 for .NET Framework) with ClangCL 10.0.0 | Windows-10.0.17763  | GitHub Actions |
+| Apple Clang 10.0.1 (clang-1001.0.46.4); Xcode 10.3                | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.0 (clang-1100.0.33.12); Xcode 11.2.1             | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.0 (clang-1100.0.33.17); Xcode 11.3.1             | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.3 (clang-1103.0.32.59); Xcode 11.4.1             | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.3 (clang-1103.0.32.62); Xcode 11.5               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.3 (clang-1103.0.32.62); Xcode 11.6               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 11.0.3 (clang-1103.0.32.62); Xcode 11.7               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.2); Xcode 12                  | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.21); Xcode 12.1               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.21); Xcode 12.1.1             | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.27); Xcode 12.2               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.28); Xcode 12.3               | macOS 10.15.7      | GitHub Actions |
+| Apple Clang 12.0.0 (clang-1200.0.32.29); Xcode 12.4               | macOS 10.15.7      | GitHub Actions |
+| GCC 4.8.5 (Ubuntu 4.8.5-4ubuntu2)                                 | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 4.9.3 (Ubuntu 4.9.3-13ubuntu2)                                | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12)                        | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 6.5.0 (Ubuntu 6.5.0-2ubuntu1~14.04.1)                         | Ubuntu 14.04.5 LTS | Travis         |
+| GCC 7.5.0 (Ubuntu 7.5.0-6ubuntu2)                                 | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)     | Windows-10.0.17763 | GitHub Actions |
+| GCC 8.1.0 (i686-posix-dwarf-rev0, Built by MinGW-W64 project)     | Windows-10.0.17763 | GitHub Actions |
+| GCC 8.4.0 (Ubuntu 8.4.0-3ubuntu2)                                 | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)                          | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 10.2.0 (Ubuntu 10.2.0-5ubuntu1~20.04)                         | Ubuntu 20.04.2 LTS | GitHub Actions |
+| GCC 11.0.1 20210321 (experimental)                                | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 3.5.2 (3.5.2-3ubuntu1)                                      | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 3.6.2 (3.6.2-3ubuntu2)                                      | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 3.7.1 (3.7.1-2ubuntu2)                                      | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 3.8.0 (3.8.0-2ubuntu4)                                      | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 3.9.1 (3.9.1-4ubuntu3\~16.04.2)                             | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 4.0.0 (4.0.0-1ubuntu1\~16.04.2)                             | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 5.0.0 (5.0.0-3\~16.04.1)                                    | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 6.0.1 (6.0.1-14)                                            | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 7.0.1 (7.0.1-12)                                            | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 8.0.1 (8.0.1-9)                                             | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 9.0.1 (9.0.1-12)                                            | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 10.0.0 (10.0.0-4ubuntu1)                                    | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Clang 10.0.0 with GNU-like command-line                           | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.0.0 with GNU-like command-line                           | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.0.0 with MSVC-like command-line                          | Windows-10.0.17763 | GitHub Actions |
+| Clang 11.1.0 (11.1.0-++20210204121720+1fdec59bffc1-1~exp1~20210203232336.162 | Ubuntu 20.04.2 LTS | GitHub Actions |
+| Visual Studio 14 2015 MSVC 19.0.24241.7 (Build Engine version 14.0.25420.1) | Windows-6.3.9600 | AppVeyor |
+| Visual Studio 15 2017 MSVC 19.16.27035.0 (Build Engine version 15.9.21+g9802d43bc3 for .NET Framework) | Windows-10.0.14393 | AppVeyor |
+| Visual Studio 15 2017 MSVC 19.16.27045.0 (Build Engine version 15.9.21+g9802d43bc3 for .NET Framework) | Windows-10.0.14393 | GitHub Actions |
+| Visual Studio 16 2019 MSVC 19.28.29912.0 (Build Engine version 16.9.0+57a23d249 for .NET Framework) | Windows-10.0.17763 | GitHub Actions |
+| Visual Studio 16 2019 MSVC 19.28.29912.0 (Build Engine version 16.9.0+57a23d249 for .NET Framework) | Windows-10.0.17763 | AppVeyor |
 
 ## License
 

appveyor.yml

@@ -10,48 +10,6 @@ environment:
       CMAKE_OPTIONS: ""
       GENERATOR: Visual Studio 14 2015
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      configuration: Debug
-      platform: x86
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Visual Studio 15 2017
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      configuration: Debug
-      platform: x86
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Visual Studio 16 2019
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      configuration: Debug
-      platform: x64
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Visual Studio 16 2019
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      configuration: Debug
-      COMPILER: mingw
-      platform: x86
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Ninja
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      configuration: Release
-      COMPILER: mingw
-      platform: x86
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Ninja
-
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       configuration: Release
       platform: x86
@@ -85,14 +43,6 @@ environment:
       CMAKE_OPTIONS: "-DJSON_ImplicitConversions=OFF"
       GENERATOR: Visual Studio 16 2019
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      configuration: Release
-      platform: x64
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Visual Studio 16 2019
-
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       configuration: Release
       platform: x64
@@ -109,31 +59,18 @@ environment:
       CMAKE_OPTIONS: ""
       GENERATOR: Visual Studio 15 2017
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      configuration: Release
-      platform: x64
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      CMAKE_OPTIONS: ""
-      GENERATOR: Visual Studio 16 2019
-
 init:
   - cmake --version
   - msbuild /version
 
 install:
-  - if "%COMPILER%"=="mingw"  appveyor DownloadFile https://github.com/ninja-build/ninja/releases/download/v1.6.0/ninja-win.zip -FileName ninja.zip
-  - if "%COMPILER%"=="mingw"  7z x ninja.zip -oC:\projects\deps\ninja > nul
-  - if "%COMPILER%"=="mingw"  set PATH=C:\projects\deps\ninja;%PATH%
-  - if "%COMPILER%"=="mingw"  set PATH=C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;%PATH%
-  - if "%COMPILER%"=="mingw"  g++ --version
   - if "%platform%"=="x86"    set GENERATOR_PLATFORM=Win32
 
 before_build:
   # for with_win_header build, inject the inclusion of Windows.h to the single-header library
   - ps: if ($env:name -Eq "with_win_header") { $header_path = "single_include\nlohmann\json.hpp" }
   - ps: if ($env:name -Eq "with_win_header") { "#include <Windows.h>`n" + (Get-Content $header_path | Out-String) | Set-Content $header_path }
-  - if "%GENERATOR%"=="Ninja" (cmake . -G "%GENERATOR%" -DCMAKE_BUILD_TYPE="%configuration%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On "%CMAKE_OPTIONS%") else (cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On "%CMAKE_OPTIONS%")
+  - cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin" -DJSON_BuildTests=On "%CMAKE_OPTIONS%"
 
 build_script:
   - cmake --build . --config "%configuration%"

cmake/ci.cmake

@@ -30,7 +30,7 @@ execute_process(COMMAND ${CPPCHECK_TOOL} --version OUTPUT_VARIABLE CPPCHECK_TOOL
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CPPCHECK_TOOL_VERSION "${CPPCHECK_TOOL_VERSION}")
 message(STATUS "🔖 Cppcheck ${CPPCHECK_TOOL_VERSION} (${CPPCHECK_TOOL})")
 
-find_program(GCC_TOOL NAMES g++-HEAD g++-11 g++-10 g++)
+find_program(GCC_TOOL NAMES g++-HEAD g++-11 g++-latest)
 execute_process(COMMAND ${GCC_TOOL} --version OUTPUT_VARIABLE GCC_TOOL_VERSION ERROR_VARIABLE GCC_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GCC_TOOL_VERSION "${GCC_TOOL_VERSION}")
 message(STATUS "🔖 GCC ${GCC_TOOL_VERSION} (${GCC_TOOL})")
@@ -85,7 +85,7 @@ find_program(SCAN_BUILD_TOOL NAMES scan-build-11 scan-build)
 file(GLOB_RECURSE SRC_FILES ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp)
 
 ###############################################################################
-# Different C++ Standards.
+# Thorough check with recent compilers
 ###############################################################################
 
 set(CLANG_CXXFLAGS "-std=c++11                        \
@@ -785,6 +785,26 @@ add_custom_target(ci_cmake_flags
 )
 
 ###############################################################################
+# Use more installed compilers.
+###############################################################################
+
+foreach(COMPILER g++-4.8 g++-4.9 g++-5 g++-7 g++-8 g++-9 g++-10 clang++-3.5 clang++-3.6 clang++-3.7 clang++-3.8 clang++-3.9 clang++-4.0 clang++-5.0 clang++-6.0 clang++-7 clang++-8 clang++-9 clang++-10 clang++-11)
+    find_program(COMPILER_TOOL NAMES ${COMPILER})
+    if (COMPILER_TOOL)
+        add_custom_target(ci_test_compiler_${COMPILER}
+            COMMAND CXX=${COMPILER} ${CMAKE_COMMAND}
+                -DCMAKE_BUILD_TYPE=Debug -GNinja
+                -DJSON_BuildTests=ON -DJSON_FastTests=ON
+                -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
+            COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER}
+            COMMAND cd ${PROJECT_BINARY_DIR}/build_compiler_${COMPILER} && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode" --output-on-failure
+            COMMENT "Compile and test with ${COMPILER}"
+        )
+    endif()
+    unset(COMPILER_TOOL CACHE)
+endforeach()
+
+###############################################################################
 # Clean up all generated files.
 ###############################################################################
 

test/CMakeLists.txt

@@ -2,6 +2,7 @@ option(JSON_Sanitizer "Build test suite with Clang sanitizer" OFF)
 option(JSON_Valgrind "Execute test suite with Valgrind" OFF)
 option(JSON_NoExceptions "Build test suite without exceptions" OFF)
 option(JSON_Coverage "Build test suite with coverage information" OFF)
+option(JSON_FastTests "Whether to skip expensive tests" OFF)
 
 # download test data
 include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/download_test_data.cmake)
@@ -112,10 +113,17 @@ foreach(file ${files})
         target_link_libraries(${testcase} PRIVATE --coverage)
     endif()
 
-    add_test(NAME "${testcase}"
-        COMMAND ${testcase} ${DOCTEST_TEST_FILTER} --no-skip
-        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-    )
+    if (JSON_FastTests)
+        add_test(NAME "${testcase}"
+            COMMAND ${testcase} ${DOCTEST_TEST_FILTER}
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    else()
+        add_test(NAME "${testcase}"
+            COMMAND ${testcase} ${DOCTEST_TEST_FILTER} --no-skip
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        )
+    endif()
     set_tests_properties("${testcase}" PROPERTIES LABELS "all" FIXTURES_REQUIRED TEST_DATA)
 
     if(JSON_Valgrind)

test/thirdparty/doctest/LICENSE.txt

 The MIT License (MIT)
 
-Copyright (c) 2016-2020 Viktor Kirilov
+Copyright (c) 2016-2021 Viktor Kirilov
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -18,4 +18,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.
\ No newline at end of file