Require C++20 and update to C++20 #1894

	name: sanitizers

	on:
	push:
	branches:
	- master
	pull_request:
	workflow_dispatch:

	jobs:
	build-and-test:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	compiler: [gcc13, clang16]
	# Since Leak is usually part of Address, we do not run it separately in
	# CI. Keeping Address and Undefined separate for easier debugging
	sanitizer: [Thread,
	Address,
	Undefined]
	# Memory sanitizer triggers on almost anything and some of the things
	# are outside our control. Additionally, there seem to be
	# inconsistencies between local and CI runs, so disabling this for now
	#
	# include:
	# # Memory sanitizer is not available for gcc
	# - compiler: clang10
	# sanitizer: MemoryWithOrigin
	steps:
	- uses: actions/checkout@v4
	- uses: cvmfs-contrib/github-action-cvmfs@v4
	- uses: aidasoft/run-lcg-view@v4
	with:
	release-platform: LCG_105/x86_64-el9-${{ matrix.compiler }}-opt
	run: \|
	echo "::group::Run CMake"
	mkdir build
	cd build
	cmake -DCMAKE_BUILD_TYPE=Debug \
	-DUSE_SANITIZER=${{ matrix.sanitizer }} \
	-DCMAKE_CXX_STANDARD=20 \
	-DCMAKE_CXX_FLAGS=" -fdiagnostics-color=always " \
	-DUSE_EXTERNAL_CATCH2=OFF \
	-DENABLE_SIO=ON \
	-DENABLE_JULIA=ON \
	-DENABLE_RNTUPLE=ON \
	-G Ninja ..
	echo "::endgroup::"
	echo "::group::Build"
	ninja -k0
	echo "::endgroup::"
	echo "::group::Julia StaticArrays Package Install"
	julia -e 'import Pkg; Pkg.add("StaticArrays")'
	echo "::endgroup"
	echo "::group::Run tests"
	ctest --output-on-failure
	echo "::endgroup::"

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