[libc++] Add missing noexcept on shared_ptr assignment #1237

	# This workflow exercises libc++ tools whose testing doesn't belong in the conformance
	# suite or in `check-cxx` proper.
	#
	# The actual logic lives in `libcxx/utils/ci/run-buildbot test-tools`, which is also how
	# failures can be reproduced locally (after installing libcxx/utils/requirements.txt):
	#
	# CC=clang CXX=clang++ libcxx/utils/ci/run-buildbot test-tools

	name: "[libc++] Test tools"

	on:
	pull_request:
	paths:
	- 'libcxx/**'
	- 'libcxxabi/**'
	- 'libunwind/**'
	- 'runtimes/**'
	- 'cmake/**'
	- '.github/workflows/libcxx-pr-test-tools.yml'
	schedule:
	# Match the main libc++ CI cron
	- cron: '0 8 * * *'

	permissions:
	contents: read # Default everything to read-only

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	test-tools:
	if: github.repository_owner == 'llvm'
	runs-on: llvm-premerge-libcxx-runners
	env:
	CC: clang-23
	CXX: clang++-23
	steps:
	- uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
	with:
	persist-credentials: false
	fetch-depth: 0 # some tools need full git history
	fetch-tags: true

	- name: Set up Python dependencies
	run: \|
	python3 -m venv .venv
	source .venv/bin/activate
	pip install -r libcxx/utils/requirements.txt

	- name: Run the tooling smoke test
	run: \|
	source .venv/bin/activate
	libcxx/utils/ci/run-buildbot test-tools

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