Update upstream source from tag 'upstream/1.1.0+dfsg.1'

Update to upstream version '1.1.0+dfsg.1'
with Debian dir 55ab4a7303

.github/workflows/main.yml

@@ -0,0 +1,244 @@
+# Continuous integration and pull request validation builds for the
+# master and maintenance branches.
+name: CI Build
+
+on:
+  push:
+    branches: [ master, maint/* ]
+  pull_request:
+    branches: [ master, maint/* ]
+
+env:
+  docker-registry: docker.pkg.github.com
+  docker-config-path: azure-pipelines/docker
+
+jobs:
+  # Build the docker container images that we will use for our Linux
+  # builds.  This will identify the last commit to the repository that
+  # updated the docker images, and try to download the image tagged with
+  # that sha.  If it does not exist, we'll do a docker build and push
+  # the image up to GitHub Packages for the actual CI/CD runs.  We tag
+  # with both the sha and "latest" so that the subsequent runs need not
+  # know the sha.  Only do this on CI builds (when the event is a "push")
+  # because PR builds from forks lack permission to write packages.
+  build_containers:
+    name: Create docker image
+    strategy:
+      matrix:
+        container:
+        - xenial
+        - bionic
+        - focal
+        - docurium
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+      if: github.event_name == 'push'
+    - name: Download existing container
+      run: azure-pipelines/getcontainer.sh ${{ env.docker-config-path }}/${{ matrix.container }}
+      env:
+        DOCKER_REGISTRY: ${{ env.docker-registry }}
+        GITHUB_TOKEN: ${{ secrets.github_token }}
+      if: github.event_name == 'push'
+    - name: Build and publish image
+      run: |
+        docker build -t ${{ env.docker-registry-container-sha }} --build-arg BASE=${{ matrix.container.base }} -f ${{ matrix.container }} .
+        docker push ${{ env.docker-registry-container-sha }}
+      working-directory: ${{ env.docker-config-path }}
+      if: github.event_name == 'push' && env.docker-container-exists != 'true'
+
+  # Run our CI/CD builds.  We build a matrix with the various build targets
+  # and their details.  Then we build either in a docker container (Linux)
+  # or on the actual hosts (macOS, Windows).
+  build:
+    name: Build
+    needs: [build_containers]
+    strategy:
+      matrix:
+        platform:
+        - # Xenial, GCC, OpenSSL
+          image: xenial
+          env:
+            CC: gcc
+            CMAKE_GENERATOR: Ninja
+            CMAKE_OPTIONS: -DUSE_HTTPS=OpenSSL -DREGEX_BACKEND=builtin -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON
+          os: ubuntu-latest
+        - # Xenial, GCC, mbedTLS
+          image: xenial
+          env:
+            CC: gcc
+            CMAKE_GENERATOR: Ninja
+            CMAKE_OPTIONS: -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON
+          os: ubuntu-latest
+        - # Xenial, Clang, OpenSSL
+          image: xenial
+          env:
+            CC: clang
+            CMAKE_GENERATOR: Ninja
+            CMAKE_OPTIONS: -DUSE_HTTPS=OpenSSL -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON
+          os: ubuntu-latest
+        - # Xenial, Clang, mbedTLS
+          image: xenial
+          env:
+            CC: clang
+            CMAKE_OPTIONS: -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=valgrind -DUSE_GSSAPI=ON
+            CMAKE_GENERATOR: Ninja
+          os: ubuntu-latest
+        - # Focal, Clang 10, mbedTLS, MemorySanitizer
+          image: focal
+          env:
+            CC: clang-10
+            CFLAGS: -fsanitize=memory -fsanitize-memory-track-origins=2 -fsanitize-blacklist=/home/libgit2/source/script/sanitizers.supp -fno-optimize-sibling-calls -fno-omit-frame-pointer
+            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local/msan -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
+            CMAKE_GENERATOR: Ninja
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+            ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
+          os: ubuntu-latest
+        - # Focal, Clang 10, OpenSSL, UndefinedBehaviorSanitizer
+          image: focal
+          env:
+            CC: clang-10
+            CFLAGS: -fsanitize=undefined,nullability -fno-sanitize-recover=undefined,nullability -fsanitize-blacklist=/home/libgit2/source/script/sanitizers.supp -fno-optimize-sibling-calls -fno-omit-frame-pointer
+            CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local -DUSE_HTTPS=OpenSSL -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
+            CMAKE_GENERATOR: Ninja
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+            ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
+          os: ubuntu-latest
+        - # macOS
+          os: macos-10.15
+          env:
+            CC: clang
+            CMAKE_OPTIONS: -DREGEX_BACKEND=regcomp_l -DDEPRECATE_HARD=ON -DUSE_LEAK_CHECKER=leaks -DUSE_GSSAPI=ON
+            CMAKE_GENERATOR: Ninja
+            PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+          setup-script: osx
+        - # Windows amd64 Visual Studio
+          os: windows-2019
+          env:
+            ARCH: amd64
+            CMAKE_GENERATOR: Visual Studio 16 2019
+            CMAKE_OPTIONS: -A x64 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+        - # Windows x86 Visual Studio
+          os: windows-2019
+          env:
+            ARCH: x86
+            CMAKE_GENERATOR: Visual Studio 16 2019
+            CMAKE_OPTIONS: -A Win32 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS -DUSE_BUNDLED_ZLIB=ON
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+        - # Windows amd64 mingw
+          os: windows-2019
+          setup-script: mingw
+          env:
+            ARCH: amd64
+            CMAKE_GENERATOR: MinGW Makefiles
+            CMAKE_OPTIONS: -DDEPRECATE_HARD=ON
+            BUILD_TEMP: D:\Temp
+            BUILD_PATH: D:\Temp\mingw64\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\CMake\bin
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+        - # Windows x86 mingw
+          os: windows-2019
+          setup-script: mingw
+          env:
+            ARCH: x86
+            CMAKE_GENERATOR: MinGW Makefiles
+            CMAKE_OPTIONS: -DDEPRECATE_HARD=ON
+            BUILD_TEMP: D:\Temp
+            BUILD_PATH: D:\Temp\mingw32\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\CMake\bin
+            SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
+      fail-fast: false
+    env: ${{ matrix.platform.env }}
+    runs-on: ${{ matrix.platform.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Set up build environment
+      run: azure-pipelines/setup-${{ matrix.platform.setup-script }}.sh
+      shell: bash
+      if: matrix.platform.setup-script != ''
+    - name: Download container
+      run: azure-pipelines/getcontainer.sh ${{ env.docker-config-path }}/${{ matrix.platform.image }}
+      env:
+        DOCKER_REGISTRY: ${{ env.docker-registry }}
+        GITHUB_TOKEN: ${{ secrets.github_token }}
+      if: matrix.platform.image != ''
+    - name: Create container
+      run: docker build -t ${{ env.docker-registry-container-sha }} -f ${{ matrix.platform.image }} .
+      working-directory: ${{ env.docker-config-path }}
+      if: matrix.platform.image != '' && env.docker-container-exists != 'true'
+    - name: Build and test
+      run: |
+        export GITTEST_NEGOTIATE_PASSWORD="${{ secrets.GITTEST_NEGOTIATE_PASSWORD }}"
+
+        if [ -n "${{ matrix.platform.image }}" ]; then
+          docker run \
+              --rm \
+              -v "$(pwd):/home/libgit2/source" \
+              -w /home/libgit2/source \
+              -e ASAN_SYMBOLIZER_PATH \
+              -e CC \
+              -e CFLAGS \
+              -e CMAKE_GENERATOR \
+              -e CMAKE_OPTIONS \
+              -e GITTEST_NEGOTIATE_PASSWORD \
+              -e PKG_CONFIG_PATH \
+              -e SKIP_NEGOTIATE_TESTS \
+              -e SKIP_SSH_TESTS \
+              ${{ env.docker-registry-container-sha }} \
+              /bin/bash -c "mkdir build && cd build && ../azure-pipelines/build.sh && ../azure-pipelines/test.sh"
+        else
+          mkdir build && cd build
+          ../azure-pipelines/build.sh
+          ../azure-pipelines/test.sh
+        fi
+      shell: bash
+
+  # Generate documentation using docurium.  We'll upload the documentation
+  # as a build artifact so that it can be reviewed as part of a pull
+  # request or in a forked build.  For CI builds in the main repository's
+  # master branch, we'll push the gh-pages branch back up so that it is
+  # published to our documentation site.
+  documentation:
+    name: Generate documentation
+    needs: [build_containers]
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Generate documentation
+      run: |
+        git config user.name 'Documentation Generation'
+        git config user.email 'libgit2@users.noreply.github.com'
+        git branch gh-pages origin/gh-pages
+        docker login https://${{ env.docker-registry }} -u ${{ github.actor }} -p ${{ github.token }}
+        docker run \
+            --rm \
+            -v "$(pwd):/home/libgit2/source" \
+            -w /home/libgit2/source \
+            ${{ env.docker-registry }}/${{ github.repository }}/docurium:latest \
+            cm doc api.docurium
+        git checkout gh-pages
+        zip --exclude .git/\* --exclude .gitignore --exclude .gitattributes -r api-documentation.zip .
+    - uses: actions/upload-artifact@v2
+      name: Upload artifact
+      with:
+        name: api-documentation
+        path: api-documentation.zip
+    - name: Push documentation branch
+      run: git push origin gh-pages
+      if: github.event_name == 'push' && github.repository == 'libgit2/libgit2'

.gitignore

@@ -1,37 +1,7 @@
-/tests/clar.suite
-/tests/clar.suite.rule
-/tests/.clarcache
-/apidocs
-/trash-*.exe
-/libgit2.pc
-/config.mak
-*.o
-*.a
-*.exe
-*.gcda
-*.gcno
-*.gcov
-.lock-wafbuild
-.waf*
 build/
-build-amiga/
-tests/tmp/
-msvc/Debug/
-msvc/Release/
-*.sln
-*.suo
-*.vc*proj*
-*.sdf
-*.opensdf
-*.aps
-*.cmake
-!cmake/Modules/*.cmake
 .DS_Store
 *~
 .*.swp
 tags
-mkmf.log
-*.profdata
-*.profraw
 CMakeSettings.json
 .vs

CMakeLists.txt

@@ -11,21 +11,12 @@
 # Install:
 # > cmake --build . --target install
 
-PROJECT(libgit2 C)
 CMAKE_MINIMUM_REQUIRED(VERSION 3.5.1)
-CMAKE_POLICY(SET CMP0015 NEW)
-IF(POLICY CMP0051)
-	CMAKE_POLICY(SET CMP0051 NEW)
-ENDIF()
-IF(POLICY CMP0042)
-	CMAKE_POLICY(SET CMP0042 NEW)
-ENDIF()
-IF(POLICY CMP0054)
-	CMAKE_POLICY(SET CMP0054 NEW)
-ENDIF()
+
+project(libgit2 VERSION "1.1.0" LANGUAGES C)
 
 # Add find modules to the path
-SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${libgit2_SOURCE_DIR}/cmake/Modules/")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${libgit2_SOURCE_DIR}/cmake/")
 
 INCLUDE(CheckLibraryExists)
 INCLUDE(CheckFunctionExists)
@@ -49,8 +40,6 @@ OPTION(THREADSAFE			"Build libgit2 as threadsafe"				 ON)
 OPTION(BUILD_CLAR			"Build Tests using the Clar suite"			 ON)
 OPTION(BUILD_EXAMPLES			"Build library usage example apps"			OFF)
 OPTION(BUILD_FUZZERS			"Build the fuzz targets"				OFF)
-OPTION(TAGS				"Generate tags"						OFF)
-OPTION(PROFILE				"Generate profiling information"			OFF)
 OPTION(ENABLE_TRACE			"Enables tracing support"				ON)
 OPTION(LIBGIT2_FILENAME			"Name of the produced binary"				OFF)
 OPTION(USE_SSH				"Link with libssh2 to enable SSH support"		 ON)
@@ -104,16 +93,6 @@ IF(MSVC)
 	OPTION(MSVC_CRTDBG 		"Enable CRTDBG memory leak reporting"			OFF)
 ENDIF()
 
-FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
-
-STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"([0-9]+).*$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
-STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_MINOR  "${GIT2_HEADER}")
-STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
-SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
-
-FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER_SOVERSION REGEX "^#define LIBGIT2_SOVERSION \"([0-9.]+)\"$")
-STRING(REGEX REPLACE "^.*LIBGIT2_SOVERSION \"([0-9.]+)\"$" "\\1" LIBGIT2_SOVERSION "${GIT2_HEADER_SOVERSION}")
-
 IF (DEPRECATE_HARD)
 	ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
 ENDIF()
@@ -137,6 +116,11 @@ IF (MSVC)
 	# /Gd - explicitly set cdecl calling convention
 	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gd")
 
+	IF (NOT (MSVC_VERSION LESS 1900))
+		# /guard:cf - Enable Control Flow Guard
+		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /guard:cf")
+	ENDIF()
+
 	IF (STATIC_CRT)
 		SET(CRT_FLAG_DEBUG "/MTd")
 		SET(CRT_FLAG_RELEASE "/MT")
@@ -181,7 +165,12 @@ IF (MSVC)
 	# /NXCOMPAT - Data execution prevention (DEP)
 	# /LARGEADDRESSAWARE - >2GB user address space on x86
 	# /VERSION - Embed version information in PE header
-	SET(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}")
+	SET(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${libgit2_VERSION_MAJOR}.${libgit2_VERSION_MINOR}")
+
+	IF (NOT (MSVC_VERSION LESS 1900))
+		# /GUARD:CF - Enable Control Flow Guard
+		SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /GUARD:CF")
+	ENDIF()
 
 	# /DEBUG - Create a PDB
 	# /LTCG - Link time code generation (whole program optimization)
@@ -232,35 +221,27 @@ ELSE ()
 		ADD_DEFINITIONS(-D__USE_MINGW_ANSI_STDIO=1)
 	ENDIF ()
 
-	ENABLE_WARNINGS(documentation)
-	DISABLE_WARNINGS(missing-field-initializers)
-	ENABLE_WARNINGS(strict-aliasing)
-	ENABLE_WARNINGS(strict-prototypes)
-	ENABLE_WARNINGS(declaration-after-statement)
-	ENABLE_WARNINGS(shift-count-overflow)
-	ENABLE_WARNINGS(unused-const-variable)
-	ENABLE_WARNINGS(unused-function)
-	ENABLE_WARNINGS(int-conversion)
+	enable_warnings(documentation)
+	disable_warnings(documentation-deprecated-sync)
+	disable_warnings(missing-field-initializers)
+	enable_warnings(strict-aliasing)
+	enable_warnings(strict-prototypes)
+	enable_warnings(declaration-after-statement)
+	enable_warnings(shift-count-overflow)
+	enable_warnings(unused-const-variable)
+	enable_warnings(unused-function)
+	enable_warnings(int-conversion)
 
 	# MinGW uses gcc, which expects POSIX formatting for printf, but
 	# uses the Windows C library, which uses its own format specifiers.
 	# Disable format specifier warnings.
-	IF(MINGW)
-		DISABLE_WARNINGS(format)
-		DISABLE_WARNINGS(format-security)
-	ELSE()
-		ENABLE_WARNINGS(format)
-		ENABLE_WARNINGS(format-security)
-	ENDIF()
-
-	IF("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
-		DISABLE_WARNINGS(documentation-deprecated-sync)
-	ENDIF()
-
-	IF (PROFILE)
-		SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")
-		SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")
-	ENDIF ()
+	if(MINGW)
+		disable_warnings(format)
+		disable_warnings(format-security)
+	else()
+		enable_warnings(format)
+		enable_warnings(format-security)
+	endif()
 ENDIF()
 
 # Ensure that MinGW provides the correct header files.
@@ -300,25 +281,6 @@ IF (BUILD_CLAR)
 	ADD_SUBDIRECTORY(tests)
 ENDIF ()
 
-IF (TAGS)
-	FIND_PROGRAM(CTAGS ctags)
-	IF (NOT CTAGS)
-		MESSAGE(FATAL_ERROR "Could not find ctags command")
-	ENDIF ()
-
-	FILE(GLOB_RECURSE SRC_ALL *.[ch])
-
-	ADD_CUSTOM_COMMAND(
-		OUTPUT tags
-		COMMAND ${CTAGS} -a ${SRC_ALL}
-		DEPENDS ${SRC_ALL}
-	)
-	ADD_CUSTOM_TARGET(
-		do_tags ALL
-		DEPENDS tags
-	)
-ENDIF ()
-
 IF (BUILD_EXAMPLES)
 	ADD_SUBDIRECTORY(examples)
 ENDIF ()

README.md

@@ -4,7 +4,7 @@ libgit2 - the Git linkable library
 | Build Status | |
 | ------------ | - |
 | **master** branch CI builds | [![Azure Pipelines Build Status](https://dev.azure.com/libgit2/libgit2/_apis/build/status/libgit2?branchName=master)](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=master)   |
-| **v0.99 branch** CI builds | [![Azure Pipelines Build Status](https://dev.azure.com/libgit2/libgit2/_apis/build/status/libgit2?branchName=maint/v0.99)](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=maint/v0.99) |
+| **v1.0 branch** CI builds | [![Azure Pipelines Build Status](https://dev.azure.com/libgit2/libgit2/_apis/build/status/libgit2?branchName=maint/v1.0)](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=maint/v1.0) |
 | **v0.28 branch** CI builds | [![Azure Pipelines Build Status](https://dev.azure.com/libgit2/libgit2/_apis/build/status/libgit2?branchName=maint/v0.28)](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=7&branchName=maint/v0.28) |
 | **Nightly** builds | [![Azure Pipelines Build Status](https://libgit2.visualstudio.com/libgit2/_apis/build/status/nightly?branchName=master&label=Full+Build)](https://libgit2.visualstudio.com/libgit2/_build/latest?definitionId=9&branchName=master) [![Coverity Build Status](https://dev.azure.com/libgit2/libgit2/_apis/build/status/coverity?branchName=master&label=Coverity+Build)](https://dev.azure.com/libgit2/libgit2/_build/latest?definitionId=21?branchName=master) [![Coverity Scan Build Status](https://scan.coverity.com/projects/639/badge.svg)](https://scan.coverity.com/projects/639) |
 
@@ -47,6 +47,7 @@ Table of Contents
     * [Compiler and linker options](#compiler-and-linker-options)
     * [MacOS X](#macos-x)
     * [Android](#android)
+    * [MinGW](#mingw)
 * [Language Bindings](#language-bindings)
 * [How Can I Contribute?](#how-can-i-contribute)
 * [License](#license)
@@ -304,6 +305,20 @@ with full path to the toolchain):
 Add `-DCMAKE_TOOLCHAIN_FILE={pathToToolchainFile}` to cmake command
 when configuring.
 
+MinGW
+-----
+
+If you want to build the library in MinGW environment with SSH support enabled,
+you may need to pass `-DCMAKE_LIBRARY_PATH="${MINGW_PREFIX}/${MINGW_CHOST}/lib/"` flag
+to CMake when configuring. This is because CMake cannot find the Win32 libraries in
+MinGW folders by default and you might see an error message stating that CMake
+could not resolve `ws2_32` library during configuration.
+
+Another option would be to install `msys2-w32api-runtime` package before configuring.
+This package installs the Win32 libraries into `/usr/lib` folder which is by default
+recognized as the library path by CMake. Please note though that this package is meant
+for MSYS subsystem which is different from MinGW.
+
 Language Bindings
 ==================================
 

azure-pipelines.yml

@@ -96,7 +96,7 @@ jobs:
     parameters:
       environmentVariables:
         CMAKE_GENERATOR: Visual Studio 15 2017
-        CMAKE_OPTIONS: -A x64 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON
+        CMAKE_OPTIONS: -A x64 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
         SKIP_SSH_TESTS: true
         SKIP_NEGOTIATE_TESTS: true
 
@@ -109,7 +109,7 @@ jobs:
     parameters:
       environmentVariables:
         CMAKE_GENERATOR: Visual Studio 15 2017
-        CMAKE_OPTIONS: -A Win32 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS
+        CMAKE_OPTIONS: -A Win32 -DMSVC_CRTDBG=ON -DDEPRECATE_HARD=ON -DUSE_SHA1=HTTPS -DUSE_BUNDLED_ZLIB=ON
         SKIP_SSH_TESTS: true
         SKIP_NEGOTIATE_TESTS: true
 
@@ -151,40 +151,3 @@ jobs:
         CMAKE_OPTIONS: -DDEPRECATE_HARD=ON
         SKIP_SSH_TESTS: true
         SKIP_NEGOTIATE_TESTS: true
-
-- job: documentation
-  displayName: 'Generate Documentation'
-  pool:
-    vmImage: 'ubuntu-18.04'
-  steps:
-  - script: |
-      cd $(Build.SourcesDirectory)/azure-pipelines/docker
-      docker build -t libgit2/docurium --build-arg BASE=ubuntu:trusty -f docurium .
-    displayName: 'Build Docker image'
-  - script: |
-      git config user.name 'Documentation Generation'
-      git config user.email 'libgit2@users.noreply.github.com'
-      git branch gh-pages origin/gh-pages
-      docker run --rm -v $(Build.SourcesDirectory):/home/libgit2/source -w /home/libgit2/source libgit2/docurium:latest cm doc api.docurium
-      git checkout gh-pages
-      cp -R * '$(Build.BinariesDirectory)'
-    displayName: 'Generate Documentation'
-  - task: archivefiles@2
-    displayName: 'Archive Documentation'
-    inputs:
-      rootFolderOrFile: '$(Build.BinariesDirectory)'
-      includeRootFolder: false
-      archiveFile: '$(Build.ArtifactStagingDirectory)/api-documentation.zip'
-  - task: publishbuildartifacts@1
-    displayName: 'Upload Documentation Artifact'
-    inputs:
-      pathToPublish: '$(Build.ArtifactStagingDirectory)'
-      artifactName: 'docs'
-  - script: |
-      git remote -v
-      echo 'machine github.com' > ~/.netrc
-      echo 'login $(GITHUB_USERNAME)' >> ~/.netrc
-      echo 'password $(GITHUB_PAT)' >> ~/.netrc
-      git push origin gh-pages
-    displayName: 'Publish Documentation'
-    condition: and(eq(variables['Build.Repository.Name'], 'libgit2/libgit2'), eq(variables['Build.Reason'], 'IndividualCI'))

azure-pipelines/build.sh

@@ -13,6 +13,10 @@ BUILD_PATH=${BUILD_PATH:=$PATH}
 CMAKE=$(which cmake)
 CMAKE_GENERATOR=${CMAKE_GENERATOR:-Unix Makefiles}
 
+if [[ "$(uname -s)" == MINGW* ]]; then
+	BUILD_PATH=$(cygpath "$BUILD_PATH")
+fi
+
 indent() { sed "s/^/    /"; }
 
 echo "Source directory: ${SOURCE_DIR}"
@@ -33,11 +37,18 @@ echo "Kernel version:"
 uname -a 2>&1 | indent
 
 echo "CMake version:"
-env PATH="$BUILD_PATH" "$CMAKE" --version 2>&1 | indent
+env PATH="${BUILD_PATH}" "${CMAKE}" --version 2>&1 | indent
 
-if test -n "$CC"; then
+if test -n "${CC}"; then
 	echo "Compiler version:"
-	"$CC" --version 2>&1 | indent
+	"${CC}" --version 2>&1 | indent
+fi
+echo "Environment:"
+if test -n "${CC}"; then
+	echo "CC=${CC}" | indent
+fi
+if test -n "${CFLAGS}"; then
+	echo "CFLAGS=${CFLAGS}" | indent
 fi
 echo ""
 
@@ -45,12 +56,12 @@ echo "##########################################################################
 echo "## Configuring build environment"
 echo "##############################################################################"
 
-echo cmake ${SOURCE_DIR} -DENABLE_WERROR=ON -DBUILD_EXAMPLES=ON -DBUILD_FUZZERS=ON -DUSE_STANDALONE_FUZZERS=ON -G \"${CMAKE_GENERATOR}\" ${CMAKE_OPTIONS}
-env PATH="$BUILD_PATH" "$CMAKE" ${SOURCE_DIR} -DENABLE_WERROR=ON -DBUILD_EXAMPLES=ON -DBUILD_FUZZERS=ON -DUSE_STANDALONE_FUZZERS=ON -G "${CMAKE_GENERATOR}" ${CMAKE_OPTIONS}
+echo cmake -DENABLE_WERROR=ON -DBUILD_EXAMPLES=ON -DBUILD_FUZZERS=ON -DUSE_STANDALONE_FUZZERS=ON -G \"${CMAKE_GENERATOR}\" ${CMAKE_OPTIONS} -S \"${SOURCE_DIR}\"
+env PATH="${BUILD_PATH}" "${CMAKE}" -DENABLE_WERROR=ON -DBUILD_EXAMPLES=ON -DBUILD_FUZZERS=ON -DUSE_STANDALONE_FUZZERS=ON -G "${CMAKE_GENERATOR}" ${CMAKE_OPTIONS} -S "${SOURCE_DIR}"
 
 echo ""
 echo "##############################################################################"
 echo "## Building libgit2"
 echo "##############################################################################"
 
-env PATH="$BUILD_PATH" "$CMAKE" --build .
+env PATH="${BUILD_PATH}" "${CMAKE}" --build .

azure-pipelines/docker/bionic

@@ -1,5 +1,4 @@
-ARG BASE
-FROM $BASE AS apt
+FROM ubuntu:bionic AS apt
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
         clang \

azure-pipelines/docker/focal

@@ -0,0 +1,79 @@
+FROM ubuntu:focal AS apt
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+        bzip2 \
+        clang-10 \
+        cmake \
+        curl \
+        gcc-10 \
+        git \
+        krb5-user \
+        libcurl4-gnutls-dev \
+        libgcrypt20-dev \
+        libkrb5-dev \
+        libpcre3-dev \
+        libssl-dev \
+        libz-dev \
+        llvm-10 \
+        make \
+        ninja-build \
+        openjdk-8-jre-headless \
+        openssh-server \
+        openssl \
+        pkgconf \
+        python \
+        sudo \
+        valgrind \
+        && \
+    rm -rf /var/lib/apt/lists/* && \
+    mkdir /usr/local/msan
+
+FROM apt AS mbedtls
+RUN cd /tmp && \
+    curl --location --silent --show-error https://tls.mbed.org/download/mbedtls-2.16.2-apache.tgz | \
+        tar -xz && \
+    cd mbedtls-2.16.2 && \
+    scripts/config.pl unset MBEDTLS_AESNI_C && \
+    scripts/config.pl set MBEDTLS_MD4_C 1 && \
+    mkdir build build-msan && \
+    cd build && \
+    CC=clang-10 CFLAGS="-fPIC" cmake -G Ninja -DENABLE_PROGRAMS=OFF -DENABLE_TESTING=OFF -DUSE_SHARED_MBEDTLS_LIBRARY=ON -DUSE_STATIC_MBEDTLS_LIBRARY=OFF -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH=/usr/local -DCMAKE_INSTALL_PREFIX=/usr/local .. && \
+    ninja install && \
+    cd ../build-msan && \
+    CC=clang-10 CFLAGS="-fPIC" cmake -G Ninja -DENABLE_PROGRAMS=OFF -DENABLE_TESTING=OFF -DUSE_SHARED_MBEDTLS_LIBRARY=ON -DUSE_STATIC_MBEDTLS_LIBRARY=OFF -DCMAKE_BUILD_TYPE=MemSanDbg -DCMAKE_INSTALL_PREFIX=/usr/local/msan .. && \
+    ninja install && \
+    cd .. && \
+    rm -rf mbedtls-2.16.2
+
+FROM mbedtls AS libssh2
+RUN cd /tmp && \
+    curl --insecure --location --silent --show-error https://www.libssh2.org/download/libssh2-1.8.2.tar.gz | \
+        tar -xz && \
+    cd libssh2-1.8.2 && \
+    mkdir build build-msan && \
+    cd build && \
+    CC=clang-10 CFLAGS="-fPIC" cmake -G Ninja -DBUILD_SHARED_LIBS=ON -DCRYPTO_BACKEND=Libgcrypt -DCMAKE_PREFIX_PATH=/usr/local -DCMAKE_INSTALL_PREFIX=/usr/local .. && \
+    ninja install && \
+    cd ../build-msan && \
+    CC=clang-10 CFLAGS="-fPIC -fsanitize=memory -fno-optimize-sibling-calls -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer" LDFLAGS="-fsanitize=memory" cmake -G Ninja -DBUILD_SHARED_LIBS=ON -DCRYPTO_BACKEND=mbedTLS -DCMAKE_PREFIX_PATH=/usr/local/msan -DCMAKE_INSTALL_PREFIX=/usr/local/msan .. && \
+    ninja install && \
+    cd .. && \
+    rm -rf libssh2-1.8.2
+
+FROM libssh2 AS valgrind
+RUN cd /tmp && \
+    curl --insecure --location --silent --show-error https://sourceware.org/pub/valgrind/valgrind-3.15.0.tar.bz2 | \
+        tar -xj && \
+    cd valgrind-3.15.0 && \
+    CC=clang-10 ./configure && \
+    make MAKEFLAGS="-j -l$(grep -c ^processor /proc/cpuinfo)" && \
+    make install && \
+    cd .. && \
+    rm -rf valgrind-3.15.0
+
+FROM valgrind AS configure
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+RUN chmod a+x /usr/local/bin/entrypoint.sh
+RUN mkdir /var/run/sshd
+
+ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

azure-pipelines/docker/xenial

@@ -1,5 +1,4 @@
-ARG BASE
-FROM $BASE AS apt
+FROM ubuntu:xenial AS apt
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
         bzip2 \

azure-pipelines/getcontainer.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+set -e
+
+DOCKERFILE_PATH=$1
+
+if [ "${DOCKERFILE_PATH}" = "" ]; then
+	echo "usage: $0 dockerfile"
+	exit 1
+fi
+
+if [ "${DOCKER_REGISTRY}" = "" ]; then
+	echo "DOCKER_REGISTRY environment variable is unset."
+	echo "Not running inside GitHub Actions or misconfigured?"
+	exit 1
+fi
+
+DOCKER_CONTAINER="${GITHUB_REPOSITORY}/$(basename ${DOCKERFILE_PATH})"
+DOCKER_REGISTRY_CONTAINER="${DOCKER_REGISTRY}/${DOCKER_CONTAINER}"
+
+echo "::set-env name=docker-container::${DOCKER_CONTAINER}"
+echo "::set-env name=docker-registry-container::${DOCKER_REGISTRY_CONTAINER}"
+
+# Identify the last git commit that touched the Dockerfiles
+# Use this as a hash to identify the resulting docker containers
+DOCKER_SHA=$(git log -1 --pretty=format:"%h" -- "${DOCKERFILE_PATH}")
+echo "::set-env name=docker-sha::${DOCKER_SHA}"
+
+DOCKER_REGISTRY_CONTAINER_SHA="${DOCKER_REGISTRY_CONTAINER}:${DOCKER_SHA}"
+
+echo "::set-env name=docker-registry-container-sha::${DOCKER_REGISTRY_CONTAINER_SHA}"
+echo "::set-env name=docker-registry-container-latest::${DOCKER_REGISTRY_CONTAINER}:latest"
+
+exists="true"
+docker login https://${DOCKER_REGISTRY} -u ${GITHUB_ACTOR} -p ${GITHUB_TOKEN} || exists="false"
+
+if [ "${exists}" != "false" ]; then
+	docker pull ${DOCKER_REGISTRY_CONTAINER_SHA} || exists="false"
+fi
+
+if [ "${exists}" = "true" ]; then
+	echo "::set-env name=docker-container-exists::true"
+else
+	echo "::set-env name=docker-container-exists::false"
+fi

azure-pipelines/setup-mingw.sh

@@ -4,6 +4,9 @@ echo "##########################################################################
 echo "## Downloading mingw"
 echo "##############################################################################"
 
+BUILD_TEMP=${BUILD_TEMP:=$TEMP}
+BUILD_TEMP=$(cygpath $BUILD_TEMP)
+
 case "$ARCH" in
 	amd64)
 		MINGW_URI="https://bintray.com/libgit2/build-dependencies/download_file?file_path=mingw-w64-x86_64-8.1.0-release-win32-seh-rt_v6-rev0.zip";;
@@ -11,5 +14,12 @@ case "$ARCH" in
 		MINGW_URI="https://bintray.com/libgit2/build-dependencies/download_file?file_path=mingw-w64-i686-8.1.0-release-win32-sjlj-rt_v6-rev0.zip";;
 esac
 
-curl -s -L "$MINGW_URI" -o "$TEMP"/mingw-"$ARCH".zip
-unzip -q "$TEMP"/mingw-"$ARCH".zip -d "$TEMP"
+if [ -z "$MINGW_URI" ]; then
+	echo "No URL"
+	exit 1
+fi
+
+mkdir -p "$BUILD_TEMP"
+
+curl -s -L "$MINGW_URI" -o "$BUILD_TEMP"/mingw-"$ARCH".zip
+unzip -q "$BUILD_TEMP"/mingw-"$ARCH".zip -d "$BUILD_TEMP"

cmake/Modules/CheckPrototypeDefinition.c.in

@@ -1,29 +0,0 @@
-@CHECK_PROTOTYPE_DEFINITION_HEADER@
-
-static void cmakeRequireSymbol(int dummy, ...) {
-  (void) dummy;
-}
-
-static void checkSymbol(void) {
-#ifndef @CHECK_PROTOTYPE_DEFINITION_SYMBOL@
-  cmakeRequireSymbol(0, &@CHECK_PROTOTYPE_DEFINITION_SYMBOL@);
-#endif
-}
-
-@CHECK_PROTOTYPE_DEFINITION_PROTO@ {
-  return @CHECK_PROTOTYPE_DEFINITION_RETURN@;
-}
-
-#ifdef __CLASSIC_C__
-int main() {
-  int ac;
-  char*av[];
-#else
-int main(int ac, char *av[]) {
-#endif
-  checkSymbol();
-  if (ac > 1000) {
-    return *av[0];
-  }
-  return 0;
-}

cmake/Modules/CheckPrototypeDefinition.cmake

@@ -1,96 +0,0 @@
-# - Check if the protoype we expect is correct.
-# check_prototype_definition(FUNCTION PROTOTYPE RETURN HEADER VARIABLE)
-#  FUNCTION - The name of the function (used to check if prototype exists)
-#  PROTOTYPE- The prototype to check.
-#  RETURN - The return value of the function.
-#  HEADER - The header files required.
-#  VARIABLE - The variable to store the result.
-# Example:
-#  check_prototype_definition(getpwent_r
-#   "struct passwd *getpwent_r(struct passwd *src, char *buf, int buflen)"
-#   "NULL"
-#   "unistd.h;pwd.h"
-#   SOLARIS_GETPWENT_R)
-# The following variables may be set before calling this macro to
-# modify the way the check is run:
-#
-#  CMAKE_REQUIRED_FLAGS = string of compile command line flags
-#  CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
-#  CMAKE_REQUIRED_INCLUDES = list of include directories
-#  CMAKE_REQUIRED_LIBRARIES = list of libraries to link
-
-#=============================================================================
-# Copyright 2005-2009 Kitware, Inc.
-# Copyright 2010-2011 Andreas Schneider <asn@cryptomilk.org>
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-#  License text for the above reference.)
-#
-
-get_filename_component(__check_proto_def_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
-
-function(CHECK_PROTOTYPE_DEFINITION _FUNCTION _PROTOTYPE _RETURN _HEADER _VARIABLE)
-
-  if ("${_VARIABLE}" MATCHES "^${_VARIABLE}$")
-    set(CHECK_PROTOTYPE_DEFINITION_CONTENT "/* */\n")
-
-    set(CHECK_PROTOTYPE_DEFINITION_FLAGS ${CMAKE_REQUIRED_FLAGS})
-    if (CMAKE_REQUIRED_LIBRARIES)
-      set(CHECK_PROTOTYPE_DEFINITION_LIBS
-        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
-    else(CMAKE_REQUIRED_LIBRARIES)
-      set(CHECK_PROTOTYPE_DEFINITION_LIBS)
-    endif(CMAKE_REQUIRED_LIBRARIES)
-    if (CMAKE_REQUIRED_INCLUDES)
-      set(CMAKE_SYMBOL_EXISTS_INCLUDES
-        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
-    else(CMAKE_REQUIRED_INCLUDES)
-      set(CMAKE_SYMBOL_EXISTS_INCLUDES)
-    endif(CMAKE_REQUIRED_INCLUDES)
-
-    foreach(_FILE ${_HEADER})
-      set(CHECK_PROTOTYPE_DEFINITION_HEADER
-        "${CHECK_PROTOTYPE_DEFINITION_HEADER}#include <${_FILE}>\n")
-    endforeach(_FILE)
-
-    set(CHECK_PROTOTYPE_DEFINITION_SYMBOL ${_FUNCTION})
-    set(CHECK_PROTOTYPE_DEFINITION_PROTO ${_PROTOTYPE})
-    set(CHECK_PROTOTYPE_DEFINITION_RETURN ${_RETURN})
-
-    configure_file("${__check_proto_def_dir}/CheckPrototypeDefinition.c.in"
-      "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c" @ONLY)
-
-    file(READ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c _SOURCE)
-
-    try_compile(${_VARIABLE}
-      ${CMAKE_BINARY_DIR}
-      ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c
-      COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
-      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${CHECK_PROTOTYPE_DEFINITION_FLAGS}
-      "${CHECK_PROTOTYPE_DEFINITION_LIBS}"
-      "${CMAKE_SYMBOL_EXISTS_INCLUDES}"
-      OUTPUT_VARIABLE OUTPUT)
-
-    if (${_VARIABLE})
-      set(${_VARIABLE} 1 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
-      message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - True")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-        "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} passed with the following output:\n"
-        "${OUTPUT}\n\n")
-    else (${_VARIABLE})
-      message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - False")
-      set(${_VARIABLE} 0 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}")
-      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-        "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} failed with the following output:\n"
-        "${OUTPUT}\n\n${_SOURCE}\n\n")
-    endif (${_VARIABLE})
-  endif("${_VARIABLE}" MATCHES "^${_VARIABLE}$")
-
-endfunction(CHECK_PROTOTYPE_DEFINITION)

cmake/SelectGSSAPI.cmake

@@ -1,35 +1,27 @@
-# Select the backend to use
-
-# We try to find any packages our backends might use
-
 INCLUDE(SanitizeBool)
 
+# We try to find any packages our backends might use
 FIND_PACKAGE(GSSAPI)
 IF (CMAKE_SYSTEM_NAME MATCHES "Darwin")
 	INCLUDE(FindGSSFramework)
 ENDIF()
 
-# Auto-select GSS backend
-SanitizeBool(USE_GSSAPI)
-IF (USE_GSSAPI STREQUAL ON)
+IF(USE_GSSAPI)
+	# Auto-select GSS backend
+	SanitizeBool(USE_GSSAPI)
+	IF (USE_GSSAPI STREQUAL ON)
 		IF (GSSFRAMEWORK_FOUND)
-		SET(GSS_BACKEND "GSS.framework")
+			SET(USE_GSSAPI "GSS.framework")
 		ELSEIF(GSSAPI_FOUND)
-		SET(GSS_BACKEND "gssapi")
+			SET(USE_GSSAPI "gssapi")
 		ELSE()
 			MESSAGE(FATAL_ERROR "Unable to autodetect a usable GSS backend."
 				"Please pass the backend name explicitly (-DUSE_GSS=backend)")
 		ENDIF()
-ELSEIF(USE_GSSAPI)
-	# Backend was explicitly set
-	SET(GSS_BACKEND ${USE_GSSAPI})
-ELSE()
-	SET(GSS_BACKEND NO)
-ENDIF()
+	ENDIF()
 
-IF(GSS_BACKEND)
 	# Check that we can find what's required for the selected backend
-	IF (GSS_BACKEND STREQUAL "GSS.framework")
+	IF (USE_GSSAPI STREQUAL "GSS.framework")
 		IF (NOT GSSFRAMEWORK_FOUND)
 			MESSAGE(FATAL_ERROR "Asked for GSS.framework backend, but it wasn't found")
 		ENDIF()
@@ -37,8 +29,8 @@ IF(GSS_BACKEND)
 		LIST(APPEND LIBGIT2_LIBS ${GSSFRAMEWORK_LIBRARIES})
 
 		SET(GIT_GSSFRAMEWORK 1)
-		ADD_FEATURE_INFO(SPNEGO GIT_GSSFRAMEWORK "SPNEGO authentication support (${GSS_BACKEND})")
-	ELSEIF (GSS_BACKEND STREQUAL "gssapi")
+		ADD_FEATURE_INFO(SPNEGO GIT_GSSFRAMEWORK "SPNEGO authentication support (${USE_GSSAPI})")
+	ELSEIF (USE_GSSAPI STREQUAL "gssapi")
 		IF (NOT GSSAPI_FOUND)
 			MESSAGE(FATAL_ERROR "Asked for gssapi GSS backend, but it wasn't found")
 		ENDIF()
@@ -46,9 +38,9 @@ IF(GSS_BACKEND)
 		LIST(APPEND LIBGIT2_LIBS ${GSSAPI_LIBRARIES})
 
 		SET(GIT_GSSAPI 1)
-		ADD_FEATURE_INFO(SPNEGO GIT_GSSAPI "SPNEGO authentication support (${GSS_BACKEND})")
+		ADD_FEATURE_INFO(SPNEGO GIT_GSSAPI "SPNEGO authentication support (${USE_GSSAPI})")
 	ELSE()
-		MESSAGE(FATAL_ERROR "Asked for backend ${GSS_BACKEND} but it wasn't found")
+		MESSAGE(FATAL_ERROR "Asked for backend ${USE_GSSAPI} but it wasn't found")
 	ENDIF()
 ELSE()
 	SET(GIT_GSSAPI 0)

cmake/SelectHTTPSBackend.cmake

@@ -1,5 +1,3 @@
-# Select the backend to use
-
 INCLUDE(SanitizeBool)
 
 # We try to find any packages our backends might use
@@ -10,36 +8,31 @@ IF (CMAKE_SYSTEM_NAME MATCHES "Darwin")
 	FIND_PACKAGE(CoreFoundation)
 ENDIF()
 
-# Auto-select TLS backend
-SanitizeBool(USE_HTTPS)
-IF (USE_HTTPS STREQUAL ON)
+IF(USE_HTTPS)
+	# Auto-select TLS backend
+	SanitizeBool(USE_HTTPS)
+	IF (USE_HTTPS STREQUAL ON)
 		IF (SECURITY_FOUND)
 			IF (SECURITY_HAS_SSLCREATECONTEXT)
-			SET(HTTPS_BACKEND "SecureTransport")
+				SET(USE_HTTPS "SecureTransport")
 			ELSE()
 				MESSAGE(STATUS "Security framework is too old, falling back to OpenSSL")
-			SET(HTTPS_BACKEND "OpenSSL")
+				SET(USE_HTTPS "OpenSSL")
 			ENDIF()
 		ELSEIF (WINHTTP)
-		SET(HTTPS_BACKEND "WinHTTP")
+			SET(USE_HTTPS "WinHTTP")
 		ELSEIF(OPENSSL_FOUND)
-		SET(HTTPS_BACKEND "OpenSSL")
+			SET(USE_HTTPS "OpenSSL")
 		ELSEIF(MBEDTLS_FOUND)
-		SET(HTTPS_BACKEND "mbedTLS")
+			SET(USE_HTTPS "mbedTLS")
 		ELSE()
 			MESSAGE(FATAL_ERROR "Unable to autodetect a usable HTTPS backend."
 				"Please pass the backend name explicitly (-DUSE_HTTPS=backend)")
 		ENDIF()
-ELSEIF(USE_HTTPS)
-	# HTTPS backend was explicitly set
-	SET(HTTPS_BACKEND ${USE_HTTPS})
-ELSE()
-	SET(HTTPS_BACKEND NO)
-ENDIF()
+	ENDIF()
 
-IF(HTTPS_BACKEND)
 	# Check that we can find what's required for the selected backend
-	IF (HTTPS_BACKEND STREQUAL "SecureTransport")
+	IF (USE_HTTPS STREQUAL "SecureTransport")
 		IF (NOT COREFOUNDATION_FOUND)
 			MESSAGE(FATAL_ERROR "Cannot use SecureTransport backend, CoreFoundation.framework not found")
 		ENDIF()
@@ -54,7 +47,7 @@ IF(HTTPS_BACKEND)
 		LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${SECURITY_INCLUDE_DIR})
 		LIST(APPEND LIBGIT2_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS})
 		LIST(APPEND LIBGIT2_PC_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS})
-	ELSEIF (HTTPS_BACKEND STREQUAL "OpenSSL")
+	ELSEIF (USE_HTTPS STREQUAL "OpenSSL")
 		IF (NOT OPENSSL_FOUND)
 			MESSAGE(FATAL_ERROR "Asked for OpenSSL TLS backend, but it wasn't found")
 		ENDIF()
@@ -64,7 +57,7 @@ IF(HTTPS_BACKEND)
 		LIST(APPEND LIBGIT2_LIBS ${OPENSSL_LIBRARIES})
 		LIST(APPEND LIBGIT2_PC_LIBS ${OPENSSL_LDFLAGS})
 		LIST(APPEND LIBGIT2_PC_REQUIRES "openssl")
-	ELSEIF(HTTPS_BACKEND STREQUAL "mbedTLS")
+	ELSEIF(USE_HTTPS STREQUAL "mbedTLS")
 		IF (NOT MBEDTLS_FOUND)
 			MESSAGE(FATAL_ERROR "Asked for mbedTLS backend, but it wasn't found")
 		ENDIF()
@@ -113,14 +106,14 @@ IF(HTTPS_BACKEND)
 		# https://github.com/ARMmbed/mbedtls/issues/228
 		# For now, pass its link flags as our own
 		LIST(APPEND LIBGIT2_PC_LIBS ${MBEDTLS_LIBRARIES})
-	ELSEIF (HTTPS_BACKEND STREQUAL "WinHTTP")
+	ELSEIF (USE_HTTPS STREQUAL "WinHTTP")
 		# WinHTTP setup was handled in the WinHTTP-specific block above
 	ELSE()
-		MESSAGE(FATAL_ERROR "Asked for backend ${HTTPS_BACKEND} but it wasn't found")
+		MESSAGE(FATAL_ERROR "Asked for backend ${USE_HTTPS} but it wasn't found")
 	ENDIF()
 
 	SET(GIT_HTTPS 1)
-	ADD_FEATURE_INFO(HTTPS GIT_HTTPS "using ${HTTPS_BACKEND}")
+	ADD_FEATURE_INFO(HTTPS GIT_HTTPS "using ${USE_HTTPS}")
 ELSE()
 	SET(GIT_HTTPS 0)
 	ADD_FEATURE_INFO(HTTPS NO "")

cmake/SelectHashes.cmake

@@ -5,37 +5,28 @@ INCLUDE(SanitizeBool)
 # USE_SHA1=CollisionDetection(ON)/HTTPS/Generic/OFF
 
 SanitizeBool(USE_SHA1)
-IF(USE_SHA1 STREQUAL ON OR USE_SHA1 STREQUAL "CollisionDetection")
-	SET(SHA1_BACKEND "CollisionDetection")
+IF(USE_SHA1 STREQUAL ON)
+	SET(USE_SHA1 "CollisionDetection")
 ELSEIF(USE_SHA1 STREQUAL "HTTPS")
-	message(STATUS "Checking HTTPS backend… ${HTTPS_BACKEND}")
-	IF(HTTPS_BACKEND STREQUAL "SecureTransport")
-		SET(SHA1_BACKEND "CommonCrypto")
-	ELSEIF(HTTPS_BACKEND STREQUAL "WinHTTP")
-		SET(SHA1_BACKEND "Win32")
-	ELSEIF(HTTPS_BACKEND)
-		SET(SHA1_BACKEND ${HTTPS_BACKEND})
+	IF(USE_HTTPS STREQUAL "SecureTransport")
+		SET(USE_SHA1 "CommonCrypto")
+	ELSEIF(USE_HTTPS STREQUAL "WinHTTP")
+		SET(USE_SHA1 "Win32")
+	ELSEIF(USE_HTTPS)
+		SET(USE_SHA1 ${USE_HTTPS})
 	ELSE()
+		SET(USE_SHA1 "CollisionDetection")
 	ENDIF()
-	IF(NOT HTTPS_BACKEND)
-		SET(SHA1_BACKEND "CollisionDetection")
-	ENDIF()
-	message(STATUS "Using SHA1 backend ${SHA1_BACKEND}")
-ELSEIF(USE_SHA1 STREQUAL "Generic")
-	SET(SHA1_BACKEND "Generic")
-# ELSEIF(NOT USE_SHA1)
-ELSE()
-	MESSAGE(FATAL_ERROR "Invalid value for USE_SHA1: ${USE_SHA1}")
 ENDIF()
 
-IF(SHA1_BACKEND STREQUAL "CollisionDetection")
+IF(USE_SHA1 STREQUAL "CollisionDetection")
 	SET(GIT_SHA1_COLLISIONDETECT 1)
 	ADD_DEFINITIONS(-DSHA1DC_NO_STANDARD_INCLUDES=1)
 	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_SHA1_C=\"common.h\")
 	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C=\"common.h\")
 	FILE(GLOB SRC_SHA1 hash/sha1/collisiondetect.* hash/sha1/sha1dc/*)
-ELSEIF(SHA1_BACKEND STREQUAL "OpenSSL")
-	# OPENSSL_FOUND should already be set, we're checking HTTPS_BACKEND
+ELSEIF(USE_SHA1 STREQUAL "OpenSSL")
+	# OPENSSL_FOUND should already be set, we're checking USE_HTTPS
 
 	SET(GIT_SHA1_OPENSSL 1)
 	IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
@@ -44,10 +35,10 @@ ELSEIF(SHA1_BACKEND STREQUAL "OpenSSL")
 		LIST(APPEND LIBGIT2_PC_REQUIRES "openssl")
 	ENDIF()
 	FILE(GLOB SRC_SHA1 hash/sha1/openssl.*)
-ELSEIF(SHA1_BACKEND STREQUAL "CommonCrypto")
+ELSEIF(USE_SHA1 STREQUAL "CommonCrypto")
 	SET(GIT_SHA1_COMMON_CRYPTO 1)
 	FILE(GLOB SRC_SHA1 hash/sha1/common_crypto.*)
-ELSEIF(SHA1_BACKEND STREQUAL "mbedTLS")
+ELSEIF(USE_SHA1 STREQUAL "mbedTLS")
 	SET(GIT_SHA1_MBEDTLS 1)
 	FILE(GLOB SRC_SHA1 hash/sha1/mbedtls.*)
 	LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${MBEDTLS_INCLUDE_DIR})
@@ -56,14 +47,15 @@ ELSEIF(SHA1_BACKEND STREQUAL "mbedTLS")
 	# https://github.com/ARMmbed/mbedtls/issues/228
 	# For now, pass its link flags as our own
 	LIST(APPEND LIBGIT2_PC_LIBS ${MBEDTLS_LIBRARIES})
-ELSEIF(SHA1_BACKEND STREQUAL "Win32")
+ELSEIF(USE_SHA1 STREQUAL "Win32")
 	SET(GIT_SHA1_WIN32 1)
 	FILE(GLOB SRC_SHA1 hash/sha1/win32.*)
-ELSEIF(SHA1_BACKEND STREQUAL "Generic")
+ELSEIF(USE_SHA1 STREQUAL "Generic")
 	FILE(GLOB SRC_SHA1 hash/sha1/generic.*)
-# ELSEIF(NOT USE_SHA1)
 ELSE()
-	MESSAGE(FATAL_ERROR "Asked for unknown SHA1 backend: ${SHA1_BACKEND}")
+	MESSAGE(FATAL_ERROR "Asked for unknown SHA1 backend: ${USE_SHA1}")
 ENDIF()
 
-ADD_FEATURE_INFO(SHA ON "using ${SHA1_BACKEND}")
+list(SORT SRC_SHA1)
+
+ADD_FEATURE_INFO(SHA ON "using ${USE_SHA1}")

docs/changelog.md

@@ -1,3 +1,62 @@
+v1.1
+----
+
+This is release v1.1, "Fernweh".
+
+### Changes or improvements
+
+* Our bundled PCRE dependency has been updated to 8.44.
+
+* The `refs/remotes/origin/HEAD` file will be created at clone time to
+  point to the origin's default branch.
+
+* libgit2 now uses the `__atomic_` intrinsics instead of `__sync_`
+  intrinsics on supported gcc and clang versions.
+
+* The `init.defaultBranch` setting is now respected and `master` is
+  no longer the hardcoded as the default branch name.
+
+* Patch files that do not contain an `index` line can now be parsed.
+
+* Configuration files with multi-line values can now contain quotes
+  split across multiple lines.
+
+* Windows clients now attempt to use TLS1.3 when available.
+
+* Servers that request an upgrade to a newer HTTP version are
+  silently ignored instead of erroneously failing.
+
+* Users can pass `NULL` to the options argument to
+  `git_describe_commit`.
+
+* Clones and fetches of very large packfiles now succeeds on 32-bit
+  platforms.
+
+* Custom reference database backends can now handle the repository's
+  `HEAD` correctly.
+
+* Repositories with a large number of packfiles no longer exhaust the
+  number of file descriptors.
+
+* The test framework now supports TAP output when the `-t` flag is
+  specified.
+
+* The test framework can now specify an exact match to a test
+  function using a trailing `$`.
+
+* All checkout types support `GIT_CHECKOUT_DISABLE_PATHSPEC_MATCH`.
+
+* `git_blame` now can ignore whitespace changes using the option
+  `GIT_BLAME_IGNORE_WHITESPACE`.
+
+* Several new examples have been created, including an examples for
+  commit, add and push.
+
+* Mode changes during rename are now supported in patch application.
+
+* `git_checkout_head` now correctly removes untracked files in a
+  subdirectory when the `FORCE | REMOVE_UNTRACKED` options are specified.
+
 v1.0.1
 ------
 

docs/coding-style.md

@@ -0,0 +1,364 @@
+# libgit2 Coding Style
+
+This documentation describes the preferred coding style for the libgit2 project.
+While not all parts of our code base conform to this coding style, the outlined
+rules are what we aim for.
+
+Note that in no case do we accept changes that convert huge parts of the code
+base to use our coding style. Instead, it is encouraged to modernize small parts
+of code you're going to modify anyway for a given change you want to introduce.
+A good rule to follow is the Boy Scout Rule: "Leave the campground cleaner than
+you found it."
+
+## C Coding Style
+
+The following sections define the coding style for all code files and headers.
+
+### Indentation and Alignment
+
+Code is indented by tabs, where a tab is 8 spaces. Each opening scope increases
+the indentation level.
+
+```c
+int foobar(int void)
+{
+	if (condition)
+		doit();
+	/* Body */
+}
+```
+
+Switch statements have their `case`s aligned with the `switch` keyword. Case
+bodies are indented by an additional level. Case bodies should not open their
+own scope to declare variables.
+
+```c
+switch (c) {
+case 'a':
+case 'b':
+	return 0;
+default:
+	return -1;
+}
+```
+
+Multi-line conditions should be aligned with the opening brace of the current
+statement:
+
+```c
+if (one_very_long_condition(c) &&
+    another_very_long_condition(c))
+	doit();
+```
+
+### Spaces
+
+There must be no space between the function and its arguments, arguments must be
+separated by a space:
+
+```c
+int doit(int first_arg, int second_arg);
+doit(1, 2);
+```
+
+For any binary or ternary operators, the arguments and separator must be
+separated by a space:
+
+```c
+1 + 2;
+x ? x : NULL;
+```
+
+Unary operators do not have a space between them and the argument they refer to:
+
+```c
+*c
+&c
+```
+
+The `sizeof` operator always must not have a space and must use braces around
+the type:
+
+```
+sizeof(int)
+```
+
+There must be a space after the keywords `if`, `switch`, `case`, `do` and
+`while`.
+
+### Braces
+
+Functions must have their opening brace on the following line:
+
+```c
+void foobar(void)
+{
+	doit();
+}
+```
+
+For conditions, braces should be placed on the same line as the condition:
+
+```c
+if (condition(c)) {
+	doit();
+	dothat();
+}
+
+while (true) {
+	doit();
+}
+```
+
+In case a condition's body has a single line, only, it's allowed to omit braces,
+except if any of its `else if` or `else` branches has more than one line:
+
+```c
+if (condition(c))
+	doit();
+
+if (condition(c))
+	doit();
+else if (other_condition(c))
+	doit();
+
+/* This example must use braces as the `else if` requires them. */
+if (condition(c)) {
+	doit();
+} else if (other_condition(c)) {
+	doit();
+	dothat();
+} else {
+	abort();
+}
+```
+
+### Comments
+
+Comments must use C-style `/* */` comments. C++-style `// `comments are not
+allowed in our codebase. This is a strict requirement as libgit2 tries to be
+compliant with the ISO C90 standard, which only allows C-style comments.
+
+Single-line comments may have their opening and closing tag on the same line:
+
+```c
+/* This is a short comment. */
+```
+
+For multi-line comments, the opening and closing tag should be empty:
+
+```c
+/*
+ * This is a rather long and potentially really unwiedly but informative
+ * multiline comment that helps quite a lot.
+ */
+```
+
+Public functions must have documentation that explain their usage, internal
+functions should have a comment. We use Docurium to generate documentation
+derived from these comments, which uses syntax similar to Doxygen. The first
+line should be a short summary of what the function does. More in-depth
+explanation should be separated from that first line by an empty line.
+Parameters and return values should be documented via `@return` and `@param`
+tags:
+
+```c
+/*
+ * Froznicate the string.
+ *
+ * Froznicate the string by foobaring its internal structure into a more obvious
+ * translation. Note that the returned string is a newly allocated string that
+ * shall be `free`d by the caller.
+ *
+ * @param s String to froznicate
+ * @return A newly allocated string or `NULL` in case an error occurred.
+ * /
+char *froznicate(const char *s);
+```
+
+### Variables
+
+Variables must be declared at the beginning of their scope. This is a strict
+requirement as libgit2 tries to be compliant with the ISO C90 standard, which
+forbids mixed declarations and code:
+
+```c
+void foobar(void)
+{
+	char *c = NULL;
+	int a, b;
+
+	a = 0;
+	b = 1;
+
+	return c;
+}
+```
+
+### Naming
+
+Variables must have all-lowercase names. In case a variable name has multiple
+words, words should be separated by an underscore `_` character. While
+recommended to use descriptive naming, common variable names like `i` for
+indices are allowed.
+
+All public functions must have a `git` prefix as well as a prefix indicating
+their respective subsystem. E.g. a function that opens a repository should be
+called `git_repository_open()`. Functions that are not public but declared in
+an internal header file for use by other subsystems should follow the same
+naming pattern. File-local static functions must not have a `git` prefix, but
+should have a prefix indicating their respective subsystem.
+
+All structures declared in the libgit2 project must have a `typedef`, we do not
+use `struct type` variables. Type names follow the same schema as functions.
+
+### Error Handling
+
+The libgit2 project mostly uses error codes to indicate errors. Error codes are
+always of type `int`, where `0` indicates success and a negative error code
+indicates an error case. In some cases, positive error codes may be used to
+indicate special cases. Returned values that are not an error code should be
+returned via an out parameter. Out parameters must always come first in the list
+of arguments.
+
+```c
+int doit(const char **out, int arg)
+{
+	if (!arg)
+		return -1;
+	*out = "Got an argument";
+	return 0;
+}
+```
+
+To avoid repetitive and fragile error handling in case a function has resources
+that need to be free'd, we use `goto out`s:
+
+```c
+int doit(char **out, int arg)
+{
+	int error = 0;
+	char *c;
+
+	c = malloc(strlen("Got an argument") + 1);
+	if (!c) {
+		error = -1;
+		goto out;
+	}
+
+	if (!arg) {
+		error = -1;
+		goto out;
+	}
+
+	strcpy(c, "Got an argument")
+	*out = c;
+
+out:
+	if (error)
+		free(c);
+	return error;
+}
+```
+
+When calling functions that return an error code, you should assign the error
+code to an `error` variable and, in case an error case is indicated and no
+custom error handling is required, return that error code:
+
+```c
+int foobar(void)
+{
+	int error;
+
+	if ((error = doit()) < 0)
+		return error;
+
+	return 0;
+}
+```
+
+When doing multiple function calls where all of the functions return an error
+code, it's common practice to chain these calls together:
+
+```c
+int doit(void)
+{
+	int error;
+
+	if ((error = dothis()) < 0 ||
+	    (error = dothat()) < 0)
+		return error;
+
+	return 0;
+}
+```
+
+## CMake Coding Style
+
+The following section defines the coding style for our CMake build system.
+
+### Indentation
+
+Code is indented by tabs, where a tab is 8 spaces. Each opening scope increases
+the indentation level.
+
+```cmake
+if(CONDITION)
+	doit()
+endif()
+```
+
+### Spaces
+
+There must be no space between keywords and their opening brace. While this is
+the same as in our C codebase for function calls, this also applies to
+conditional keywords. This is done to avoid the awkward-looking `else ()`
+statement.
+
+```cmake
+if(CONDITION)
+	doit()
+else()
+	dothat()
+endif()
+```
+
+### Case
+
+While CMake is completely case-insensitive when it comes to function calls, we
+want to agree on a common coding style for this. To reduce the danger of
+repetitive strain injuries, all function calls should be lower-case (NB: this is
+not currently the case yet, but introduced as a new coding style by this
+document).
+
+Variables are written all-uppercase. In contrast to functions, variables are
+case-sensitive in CMake. As CMake itself uses upper-case variables in all
+places, we should follow suit and do the same.
+
+Control flow keywords must be all lowercase. In contrast to that, test keywords
+must be all uppercase:
+
+```cmake
+if(NOT CONDITION)
+        doit()
+elseif(FOO AND BAR)
+        dothat()
+endif()
+```
+
+### Targets
+
+CMake code should not use functions that modify the global scope but prefer
+their targeted equivalents, instead. E.g. instead of using
+`include_directories()`, you must use `target_include_directories()`. An
+exception to this rule is setting up global compiler flags like warnings or
+flags required to set up the build type.
+
+### Dependencies
+
+Dependencies should not be discovered or set up in the main "CMakeLists.txt"
+module. Instead, they should either have their own module in our top-level
+"cmake/" directory or have a "CMakeLists.txt" in their respective "deps/"
+directory in case it is a vendored library. All dependencies should expose
+interface library targets that can be linked against with
+`target_link_libraries()`.

examples/add.c

@@ -48,9 +48,11 @@ int lg2_add(git_repository *repo, int argc, char **argv)
 	git_index_matched_path_cb matched_cb = NULL;
 	git_index *index;
 	git_strarray array = {0};
-	struct index_options options;
+	struct index_options options = {0};
 	struct args_info args = ARGS_INFO_INIT;
 
+	options.mode = INDEX_ADD;
+
 	/* Parse the options & arguments. */
 	parse_opts(NULL, &options, &args);
 	strarray_from_args(&array, &args);

examples/checkout.c

@@ -239,7 +239,7 @@ next:
 
 out:
 	git_reference_free(remote_ref);
-	git_strarray_free(&remotes);
+	git_strarray_dispose(&remotes);
 	return error;
 }
 

examples/commit.c

@@ -0,0 +1,84 @@
+/*
+ * libgit2 "commit" example - shows how to create a git commit
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#include "common.h"
+
+/**
+ * This example demonstrates the libgit2 commit APIs to roughly
+ * simulate `git commit` with the commit message argument.
+ *
+ * This does not have:
+ *
+ * - Robust error handling
+ * - Most of the `git commit` options
+ *
+ * This does have:
+ *
+ * - Example of performing a git commit with a comment
+ * 
+ */
+int lg2_commit(git_repository *repo, int argc, char **argv)
+{
+	const char *opt = argv[1];
+	const char *comment = argv[2];
+	int error;
+
+	git_oid commit_oid,tree_oid;
+	git_tree *tree;
+	git_index *index;	
+	git_object *parent = NULL;
+	git_reference *ref = NULL;
+	git_signature *signature;	
+
+	/* Validate args */
+	if (argc < 3 || strcmp(opt, "-m") != 0) {
+		printf ("USAGE: %s -m <comment>\n", argv[0]);
+		return -1;
+	}
+
+	error = git_revparse_ext(&parent, &ref, repo, "HEAD");
+	if (error == GIT_ENOTFOUND) {
+		printf("HEAD not found. Creating first commit\n");
+		error = 0;
+	} else if (error != 0) {
+		const git_error *err = git_error_last();
+		if (err) printf("ERROR %d: %s\n", err->klass, err->message);
+		else printf("ERROR %d: no detailed info\n", error);
+	}
+
+	check_lg2(git_repository_index(&index, repo), "Could not open repository index", NULL);
+	check_lg2(git_index_write_tree(&tree_oid, index), "Could not write tree", NULL);;
+	check_lg2(git_index_write(index), "Could not write index", NULL);;
+
+	check_lg2(git_tree_lookup(&tree, repo, &tree_oid), "Error looking up tree", NULL);
+	
+	check_lg2(git_signature_default(&signature, repo), "Error creating signature", NULL);
+	
+	check_lg2(git_commit_create_v(
+		&commit_oid,
+		repo,
+		"HEAD",
+		signature,
+		signature,
+		NULL,
+		comment,
+		tree,
+		parent ? 1 : 0, parent), "Error creating commit", NULL);
+
+	git_index_free(index);
+	git_signature_free(signature);
+	git_tree_free(tree);	
+
+	return error;
+}

examples/common.h

@@ -59,6 +59,7 @@ extern int lg2_blame(git_repository *repo, int argc, char **argv);
 extern int lg2_cat_file(git_repository *repo, int argc, char **argv);
 extern int lg2_checkout(git_repository *repo, int argc, char **argv);
 extern int lg2_clone(git_repository *repo, int argc, char **argv);
+extern int lg2_commit(git_repository *repo, int argc, char **argv);
 extern int lg2_config(git_repository *repo, int argc, char **argv);
 extern int lg2_describe(git_repository *repo, int argc, char **argv);
 extern int lg2_diff(git_repository *repo, int argc, char **argv);
@@ -71,6 +72,7 @@ extern int lg2_log(git_repository *repo, int argc, char **argv);
 extern int lg2_ls_files(git_repository *repo, int argc, char **argv);
 extern int lg2_ls_remote(git_repository *repo, int argc, char **argv);
 extern int lg2_merge(git_repository *repo, int argc, char **argv);
+extern int lg2_push(git_repository *repo, int argc, char **argv);
 extern int lg2_remote(git_repository *repo, int argc, char **argv);
 extern int lg2_rev_list(git_repository *repo, int argc, char **argv);
 extern int lg2_rev_parse(git_repository *repo, int argc, char **argv);

examples/general.c

@@ -707,7 +707,7 @@ static void reference_listing(git_repository *repo)
 		git_reference_free(ref);
 	}
 
-	git_strarray_free(&ref_list);
+	git_strarray_dispose(&ref_list);
 }
 
 /**

examples/lg2.c

@@ -15,6 +15,7 @@ struct {
 	{ "cat-file",     lg2_cat_file,     1 },
 	{ "checkout",     lg2_checkout,     1 },
 	{ "clone",        lg2_clone,        0 },
+	{ "commit",       lg2_commit,       1 },
 	{ "config",       lg2_config,       1 },
 	{ "describe",     lg2_describe,     1 },
 	{ "diff",         lg2_diff,         1 },
@@ -27,6 +28,7 @@ struct {
 	{ "ls-files",     lg2_ls_files,     1 },
 	{ "ls-remote",    lg2_ls_remote,    1 },
 	{ "merge",        lg2_merge,        1 },
+	{ "push",         lg2_push,        1  },
 	{ "remote",       lg2_remote,       1 },
 	{ "rev-list",     lg2_rev_list,     1 },
 	{ "rev-parse",    lg2_rev_parse,    1 },

examples/log.c

@@ -434,21 +434,28 @@ static int parse_options(
 		else if (!strcmp(a, "--reverse"))
 			set_sorting(s, GIT_SORT_REVERSE);
 		else if (match_str_arg(&opt->author, &args, "--author"))
-			/** Found valid --author */;
+			/** Found valid --author */
+			;
 		else if (match_str_arg(&opt->committer, &args, "--committer"))
-			/** Found valid --committer */;
+			/** Found valid --committer */
+			;
 		else if (match_str_arg(&opt->grep, &args, "--grep"))
-			/** Found valid --grep */;
+			/** Found valid --grep */
+			;
 		else if (match_str_arg(&s->repodir, &args, "--git-dir"))
-			/** Found git-dir. */;
+			/** Found git-dir. */
+			;
 		else if (match_int_arg(&opt->skip, &args, "--skip", 0))
-			/** Found valid --skip. */;
+			/** Found valid --skip. */
+			;
 		else if (match_int_arg(&opt->limit, &args, "--max-count", 0))
-			/** Found valid --max-count. */;
+			/** Found valid --max-count. */
+			;
 		else if (a[1] >= '0' && a[1] <= '9')
 			is_integer(&opt->limit, a + 1, 0);
 		else if (match_int_arg(&opt->limit, &args, "-n", 0))
-			/** Found valid -n. */;
+			/** Found valid -n. */
+			;
 		else if (!strcmp(a, "--merges"))
 			opt->min_parents = 2;
 		else if (!strcmp(a, "--no-merges"))
@@ -458,9 +465,11 @@ static int parse_options(
 		else if (!strcmp(a, "--no-max-parents"))
 			opt->max_parents = -1;
 		else if (match_int_arg(&opt->max_parents, &args, "--max-parents=", 1))
-			/** Found valid --max-parents. */;
+			/** Found valid --max-parents. */
+			;
 		else if (match_int_arg(&opt->min_parents, &args, "--min-parents=", 0))
-			/** Found valid --min_parents. */;
+			/** Found valid --min_parents. */
+			;
 		else if (!strcmp(a, "-p") || !strcmp(a, "-u") || !strcmp(a, "--patch"))
 			opt->show_diff = 1;
 		else if (!strcmp(a, "--log-size"))

examples/push.c

@@ -0,0 +1,56 @@
+/*
+ * libgit2 "push" example - shows how to push to remote
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#include "common.h"
+
+/**
+ * This example demonstrates the libgit2 push API to roughly
+ * simulate `git push`.
+ *
+ * This does not have:
+ *
+ * - Robust error handling
+ * - Any of the `git push` options
+ *
+ * This does have:
+ *
+ * - Example of push to origin/master
+ * 
+ */
+
+/** Entry point for this command */
+int lg2_push(git_repository *repo, int argc, char **argv) {
+	git_push_options options;
+	git_remote* remote = NULL;
+	char *refspec = "refs/heads/master";
+	const git_strarray refspecs = {
+		&refspec,
+		1
+	};
+
+    /* Validate args */
+	if (argc > 1) {
+		printf ("USAGE: %s\n\nsorry, no arguments supported yet\n", argv[0]);
+		return -1;
+	}
+
+	check_lg2(git_remote_lookup(&remote, repo, "origin" ), "Unable to lookup remote", NULL);
+	
+	check_lg2(git_push_options_init(&options, GIT_PUSH_OPTIONS_VERSION ), "Error initializing push", NULL);
+
+	check_lg2(git_remote_push(remote, &refspecs, &options), "Error pushing", NULL);
+
+	printf("pushed\n");
+	return 0;
+}

examples/remote.c

@@ -129,7 +129,7 @@ static int cmd_rename(git_repository *repo, struct remote_opts *o)
 		puts(problems.strings[0]);
 	}
 
-	git_strarray_free(&problems);
+	git_strarray_dispose(&problems);
 
 	return retval;
 }
@@ -207,7 +207,7 @@ static int cmd_show(git_repository *repo, struct remote_opts *o)
 		git_remote_free(remote);
 	}
 
-	git_strarray_free(&remotes);
+	git_strarray_dispose(&remotes);
 
 	return 0;
 }

examples/tag.c

@@ -162,7 +162,7 @@ static void action_list_tags(tag_state *state)
 		each_tag(tag_names.strings[i], state);
 	}
 
-	git_strarray_free(&tag_names);
+	git_strarray_dispose(&tag_names);
 }
 
 static void action_delete_tag(tag_state *state)

fuzzers/corpora/midx/054ee2c82bdb6a170106eb5d35f21bde2119d584

@@ -0,0 +1 @@
+絎<02>綢

fuzzers/corpora/midx/0903e378a493c596298074d6bff8de7f9ac25aa7

@@ -0,0 +1 @@
+腋7

fuzzers/corpora/midx/09144a846f90f894049ef8a0ed0cc7ab4588dc6c

@@ -0,0 +1 @@
+ÃØseed

fuzzers/corpora/midx/0e02deca2b16d71f8637933bd56dc8592ed9fdff

@@ -0,0 +1 @@
+<EFBFBD>H

fuzzers/corpora/midx/0f6c5fc9b6a68835364bbef8937560ee5a481938

@@ -0,0 +1 @@
+<EFBFBD>*

fuzzers/corpora/midx/118735f7786ae6b4c2f6b36314ab1f2cafe9c3c8

@@ -0,0 +1 @@
+聟ﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛ丸ﾛﾛﾛﾛﾛﾛﾛﾛﾛﾋﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾋﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛﾛ

fuzzers/corpora/midx/1c9599ce00978780519272be279f508c402e3268

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>蕨蕨蕨蕨蕨蕨蕨蕨蕨蕨蕨蕨蕨蕨<EFBFBD>