nopanic.yaml

# This CI config checks that  getrandom's backend implementation
# do not contain potential panics.
#
# It is unclear how to implement a no-panic check for esp_idf, fuchsia,
# vxworks, hermit, and solid backends, so we do not check them here,
# but they still should be panic-free. We do not check wasm_js backend
# since glue code generated by wasm-bindgen contains potential panics,
# so resulting WASM files inevitably contain potential panics for any
# code which non-trivially interacts with the JS enviroment.
name: No panic

on:
  push:
    branches: master
  pull_request:
    branches: master

permissions:
  contents: read

defaults:
  run:
    working-directory: nopanic_check

env:
  RUSTFLAGS: "-Dwarnings"

jobs:
  linux:
    name: Linux
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          targets: wasm32-wasip1, wasm32-wasip2
      - uses: Swatinem/rust-cache@v2
      
      - name: Build (linux_android_with_fallback.rs)
        run: cargo build --release
      - name: Check (linux_android_with_fallback.rs)
        run: (exit $( grep -c panic target/release/libgetrandom_wrapper.so ))

      - name: Build (linux_android.rs)
        env:
          RUSTFLAGS: -Dwarnings --cfg getrandom_backend="linux_getrandom"
        run: cargo build --release
      - name: Check (linux_android.rs)
        run: (exit $( grep -c panic target/release/libgetrandom_wrapper.so ))

      - name: Build (linux_rustix.rs)
        env:
          RUSTFLAGS: -Dwarnings --cfg getrandom_backend="linux_rustix"
        run: cargo build --release
      - name: Check (linux_rustix.rs)
        run: (exit $( grep -c panic target/release/libgetrandom_wrapper.so ))

      - name: Build (rdrand.rs)
        env:
          RUSTFLAGS: -Dwarnings --cfg getrandom_backend="rdrand"
        run: cargo build --release
      - name: Check (rdrand.rs)
        run: (exit $( grep -c panic target/release/libgetrandom_wrapper.so ))

      - name: Build (custom.rs)
        env:
          RUSTFLAGS: -Dwarnings --cfg getrandom_backend="custom"
        run: cargo build --release
      - name: Check (custom.rs)
        run: (exit $( grep -c panic target/release/libgetrandom_wrapper.so ))

      - name: Build (wasi.rs, preview 1)
        run: cargo build --release --target wasm32-wasip1
      - name: Check (wasi.rs, preview 1)
        run: (exit $( grep -c panic target/wasm32-wasip1/release/getrandom_wrapper.wasm ))

      - name: Build (wasi.rs, preview 2)
        run: cargo build --release --target wasm32-wasip2
      - name: Check (wasi.rs, preview 2)
        run: (exit $( grep -c panic target/wasm32-wasip2/release/getrandom_wrapper.wasm ))

  cross:
    name: Cross
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          components: rust-src
          targets: aarch64-unknown-linux-gnu,x86_64-unknown-netbsd,x86_64-unknown-freebsd,x86_64-pc-solaris
      - uses: Swatinem/rust-cache@v2
      # TODO: use pre-compiled cross after a new (post-0.2.5) release
      - name: Install cross
        env:
          # Allow compiler warnings during cross installation
          RUSTFLAGS:
        run: cargo install cross --force --git https://github.com/cross-rs/cross

      - name: Build (rndr.rs)
        env:
          RUSTFLAGS: -Dwarnings --cfg getrandom_backend="rndr"
        run: cross build --release --target=aarch64-unknown-linux-gnu
      - name: Check (rndr.rs)
        run: (exit $( grep -c panic target/aarch64-unknown-linux-gnu/release/libgetrandom_wrapper.so ))

      - name: Build (getrandom.rs)
        run: cross build --release --target=x86_64-unknown-freebsd
      - name: Check (getrandom.rs)
        run: (exit $( grep -c panic target/x86_64-unknown-freebsd/release/libgetrandom_wrapper.so ))

      - name: Build (netbsd.rs)
        run: cross build --release --target=x86_64-unknown-netbsd
      - name: Check (netbsd.rs)
        run: (exit $( grep -c panic target/x86_64-unknown-netbsd/release/libgetrandom_wrapper.so ))

      - name: Build (solaris.rs)
        run: cross build --release --target=x86_64-pc-solaris
      - name: Check (solaris.rs)
        run: (exit $( grep -c panic target/x86_64-pc-solaris/release/libgetrandom_wrapper.so ))

  macos:
    name: macOS
    runs-on: macos-14
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          targets: aarch64-apple-ios
      - uses: Swatinem/rust-cache@v2
      
      # We do not need the grep check since linker fails
      # if `panic_nonexistent` can not be eliminated
      - name: Build (getentropy.rs)
        run: cargo build --release --target=aarch64-apple-darwin
      - name: Build (apple-other.rs)
        run: cargo build --release --target=aarch64-apple-ios

  windows:
    name: Windows
    runs-on: windows-2022
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: nightly-2024-10-14
          components: rust-src
      - run: cargo build --release
      - run: cargo build --release --target=x86_64-win7-windows-msvc -Zbuild-std="std,panic_abort"