ringbuffer test: dump failed value to stderr before aborting #141

	name: Clang format
	on: [push, pull_request]
	jobs:
	pre_job:
	name: Prerequisite checks
	runs-on: ubuntu-latest
	outputs:
	should_skip: ${{ steps.skip_check.outputs.should_skip }}
	steps:
	- id: skip_check
	uses: fkirc/skip-duplicate-actions@master
	with:
	concurrent_skipping: 'same_content'
	cancel_others: 'true'
	clang-format-pull:
	name: Clang Format
	needs: pre_job
	if: "needs.pre_job.outputs.should_skip != 'true'"
	runs-on: ubuntu-latest
	steps:
	- name: Define variables
	run: \|
	echo "BASE=$(\
	if [[ ${{ github.event_name }} = 'pull_request' ]]; then \
	echo 'origin/${{ github.base_ref }}'; \
	else \
	echo '${{ github.event.before }}'; \
	fi)" \
	>> $GITHUB_ENV
	- uses: actions/checkout@v3
	- name: Install clang-format
	run: sudo apt-get install clang-format
	- name: Download git-clang-format
	run: wget https://raw.githubusercontent.com/llvm-mirror/clang/master/tools/clang-format/git-clang-format
	- name: Install git-clang-format
	run: sudo install -t /bin git-clang-format
	- name: Fetch origin
	run: git fetch origin
	- name: clang-format
	run: git clang-format ${{ env.BASE }}
	- name: diff
	run: git diff --exit-code

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