refs #12442 - generate a fuzzing corpus by extracting code from `testrunner` #17

	# Syntax reference https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions
	# Environment reference https://help.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners
	name: corpus

	on: [pull_request, push]

	permissions:
	contents: read

	jobs:
	corpus:
	runs-on: ubuntu-22.04
	if: ${{ github.repository_owner == 'danmar' }}

	steps:
	- uses: actions/checkout@v4
	with:
	persist-credentials: false

	- name: ccache
	uses: hendrikmuhs/[email protected]
	with:
	key: ${{ github.workflow }}-${{ runner.os }}

	- name: Install missing software on ubuntu
	run: \|
	sudo apt-get update
	sudo apt-get install -y fdupes

	- name: build testrunner
	run: \|
	store_dir=$(pwd)/store
	mkdir $store_dir
	export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
	make -s -j$(nproc) CXXFLAGS="-w -DSTORE_INPUT_DIR=\"\\\"$store_dir\\\"\"" testrunner

	- name: run testrunner
	run: \|
	./testrunner -q

	- name: de-duplicate files
	run: \|
	ls -l ./store \| wc -l
	echo "removing duplicates"
	fdupes -qdN ./store > /dev/null
	ls -l ./store \| wc -l
	# print biggest size
	ls -l ./store \| cut -d' ' -f5 \| sort -u -n -r \| head -n1

	# TODO: dedup with fuzzer?

	- uses: actions/upload-artifact@v4
	if: success()
	with:
	name: corpus
	path: ./store

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