Initial import from mustang.

.github/workflows/main.yml

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+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  rustfmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - run: rustup update --no-self-update
+    - run: cargo fmt --all -- --check
+
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}
+    env:
+      QEMU_BUILD_VERSION: 8.1.0
+    strategy:
+      matrix:
+        build: [ubuntu, i686-linux, aarch64-linux, riscv64-linux]
+        include:
+          - build: ubuntu
+            os: ubuntu-latest
+            host_target: x86_64-unknown-linux-gnu
+          - build: i686-linux
+            os: ubuntu-latest
+            target: i686-unknown-linux-gnu
+            gcc_package: gcc-i686-linux-gnu
+            gcc: i686-linux-gnu-gcc
+            libc_package: libc-dev-i386-cross
+            host_target: i686-unknown-linux-gnu
+          - build: aarch64-linux
+            os: ubuntu-latest
+            target: aarch64-unknown-linux-gnu
+            gcc_package: gcc-aarch64-linux-gnu
+            gcc: aarch64-linux-gnu-gcc
+            qemu: qemu-aarch64 -L /usr/aarch64-linux-gnu
+            qemu_target: aarch64-linux-user
+            host_target: aarch64-unknown-linux-gnu
+          - build: riscv64-linux
+            os: ubuntu-latest
+            target: riscv64gc-unknown-linux-gnu
+            gcc_package: gcc-riscv64-linux-gnu
+            gcc: riscv64-linux-gnu-gcc
+            qemu: qemu-riscv64 -L /usr/riscv64-linux-gnu
+            qemu_target: riscv64-linux-user
+            host_target: riscv64gc-unknown-linux-gnu
+    steps:
+    - uses: actions/checkout@v3
+    - name: Configure Cargo target
+      run: |
+        echo CARGO_BUILD_TARGET=${{ matrix.target }} >> $GITHUB_ENV
+        rustup target add ${{ matrix.target }}
+      if: matrix.target != ''
+
+    - uses: actions/cache@v3
+      with:
+        path: ${{ runner.tool_cache }}/qemu
+        key: qemu-${{ matrix.target }}-${{ env.QEMU_BUILD_VERSION }}-patched
+      if: matrix.target != '' && matrix.os == 'ubuntu-latest'
+
+    - name: Install cross-compilation tools
+      run: |
+        set -ex
+        sudo apt-get update
+        sudo apt-get install -y ${{ matrix.gcc_package }} ninja-build
+        upcase=$(echo ${{ matrix.host_target }} | awk '{ print toupper($0) }' | sed 's/-/_/g')
+        echo CARGO_TARGET_${upcase}_LINKER=${{ matrix.gcc }} >> $GITHUB_ENV
+        echo CC_${{ matrix.target }}=${{ matrix.gcc }} >> $GITHUB_ENV
+      if: matrix.gcc_package != '' && matrix.os == 'ubuntu-latest'
+
+    - name: Install cross-compilation libraries
+      run: |
+        set -ex
+        sudo apt-get update
+        sudo apt-get install -y ${{ matrix.libc_package }}
+      if: matrix.libc_package != '' && matrix.os == 'ubuntu-latest'
+
+    - name: Install qemu
+      run: |
+        set -ex
+
+        # Configure Cargo for cross compilation and tell it how it can run
+        # cross executables
+        upcase=$(echo ${{ matrix.host_target }} | awk '{ print toupper($0) }' | sed 's/-/_/g')
+        echo CARGO_TARGET_${upcase}_RUNNER=${{ runner.tool_cache }}/qemu/bin/${{ matrix.qemu }} >> $GITHUB_ENV
+
+        # See if qemu is already in the cache
+        if [ -f ${{ runner.tool_cache }}/qemu/bin/${{ matrix.qemu }} ]; then
+          exit 0
+        fi
+
+        # Download and build qemu from source since the most recent release is
+        # way faster at arm emulation than the current version github actions'
+        # ubuntu image uses. Disable as much as we can to get it to build
+        # quickly.
+        cd
+        curl https://download.qemu.org/qemu-$QEMU_BUILD_VERSION.tar.xz | tar xJf -
+        cd qemu-$QEMU_BUILD_VERSION
+        patch -p1 < $GITHUB_WORKSPACE/ci/translate-errno.patch
+        patch -p1 < $GITHUB_WORKSPACE/ci/getsockopt-timeouts.patch
+        ./configure --target-list=${{ matrix.qemu_target }} --prefix=${{ runner.tool_cache }}/qemu --disable-tools --disable-slirp --disable-fdt --disable-capstone --disable-docs
+        ninja -C build install
+      if: matrix.qemu != '' && matrix.os == 'ubuntu-latest'
+
+    - name: cargo test
+      run: |
+        cargo test
+      env:
+        RUST_BACKTRACE: 1

.gitignore

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+target
+Cargo.lock

.rustfmt.toml

@@ -0,0 +1 @@
+# This file tells tools we use rustfmt. We use the default settings.

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+*Note*: this Code of Conduct pertains to individuals' behavior. Please also see the [Organizational Code of Conduct][OCoC].
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the Bytecode Alliance CoC team at [report@bytecodealliance.org](mailto:report@bytecodealliance.org). The CoC team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The CoC team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the Bytecode Alliance's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[OCoC]: https://github.com/sunfishcode/c-ward/blob/main/ORG_CODE_OF_CONDUCT.md
+[homepage]: https://www.contributor-covenant.org
+[version]: https://www.contributor-covenant.org/version/1/4/

COPYRIGHT

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+Short version for non-lawyers:
+
+`c-ward` is triple-licensed under Apache 2.0 with the LLVM Exception,
+Apache 2.0, and MIT terms.
+
+
+Longer version:
+
+Copyrights in the `c-ward` project are retained by their contributors.
+No copyright assignment is required to contribute to the `c-ward`
+project.
+
+Some files include code derived from Rust's `libstd`; see the comments in
+the code for details.
+
+Except as otherwise noted (below and/or in individual files), `c-ward`
+is licensed under:
+
+ - the Apache License, Version 2.0, with the LLVM Exception
+   <LICENSE-Apache-2.0_WITH_LLVM-exception> or
+   <http://llvm.org/foundation/relicensing/LICENSE.txt>
+ - the Apache License, Version 2.0
+   <LICENSE-APACHE> or
+   <http://www.apache.org/licenses/LICENSE-2.0>,
+ - or the MIT license
+   <LICENSE-MIT> or
+   <http://opensource.org/licenses/MIT>,
+
+at your option.

Cargo.toml

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+[package]
+name = "c-ward"
+version = "0.11.0"
+authors = [
+    "Dan Gohman <dev@sunfishcode.online>",
+]
+description = "Rust programs written entirely in Rust"
+license = "Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT"
+repository = "https://github.com/sunfishcode/c-ward"
+edition = "2021"
+exclude = ["/.github"]
+publish = false
+
+[dev-dependencies]
+assert_cmd = "2.0.12"
+libc = "0.2.147"
+
+[workspace]
+members = [
+  "c-scape",
+  "c-gull",
+]