Fix string conversion for nulls in arrays. #810

	name: "CodeQL"

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]
	schedule:
	- cron: "33 21 * * 6"

	jobs:
	analyze:
	name: Analyze
	runs-on: ubuntu-latest
	permissions:
	actions: read
	contents: read
	security-events: write

	strategy:
	fail-fast: false
	matrix:
	language: [ python, cpp ]

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Initialize CodeQL
	uses: github/codeql-action/init@v3
	with:
	languages: ${{ matrix.language }}
	queries: +security-and-quality

	# For some reason, this seems to detect neither the configure script or the
	# CMake setup.
	#
	# - name: Autobuild
	# uses: github/codeql-action/autobuild@v3
	#
	# Instead, we'll have to build manually:
	- name: Build
	run: \|
	gcc --version
	sudo apt-get install -y postgresql virtualenv
	sudo service postgresql start
	sudo su postgres -c "createuser --createdb $(whoami)"
	createdb "$(whoami)"
	# Using clang because currently the gcc build fails with an
	# address sanitizer (asan) link error.
	./configure --enable-maintainer-mode --enable-audit --disable-static CXXFLAGS='-O1 -std=c++17' CXX=clang++
	make -j4 check \|\| (cat test-suite.log && exit 1 \|\| true)

	- name: Perform CodeQL Analysis
	uses: github/codeql-action/analyze@v3
	with:
	category: "/language:${{ matrix.language }}"

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