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040000 tree 55a581eeb7d00936b74791a5e7fb340e8db1c58d	obj_validation
040000 tree eda376b74ec12254a3e055939691f2cd09a36045	protection
040000 tree 5449551c26635291114dd9555f4c37d62a80b381	stackprot
040000 tree 32594cf9160178f199fbef7a4d79d5fcc1cecaa7	userspace