"""Regression tests for pypa/packaging #1147: perf: add __slots__ to Marker

Generated by Breakwater. Each test passed on the base commit and failed on the head commit when
generated; it pins the old behaviour.
"""


def test_1147_p4_base_head_load_0():
    """Breakwater P4: base behaviour pinned (found by differential testing; label: likely-bug)."""
    import base64
    import pickle
    # pickled by the base version (lazy caches warmed first)
    old = pickle.loads(base64.b64decode('gASVlgAAAAAAAACMEXBhY2thZ2luZy5tYXJrZXJzlIwGTWFya2VylJOUKYGUfZSMCF9tYXJrZXJzlF2UjBFwYWNrYWdpbmcuX3BhcnNlcpSMBVZhbHVllJOUKYGUTn2UjAV2YWx1ZZSMAWKUc4aUYmgHjAJPcJSTlCmBlE59lGgMjAE+lHOGlGJoCSmBlE59lGgMjAFhlHOGlGKHlGFzYi4='))
    assert old is not None  # loading must not raise