René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Segmentation fault upon print_dict","articleBody":"Requesting help to get past the segmentation fault.\nlibyang: v2.1.148\nlibyang-python: v2.8.4\n\nThe following set of operations result in segmentation fault. Intermediate unrelated steps modifying dtree(play_tree after loading classroom) could be a premonition of the eventual segmentation fault. \nCouldn't see anything wrong with the yangs themselves, given dtree was generated.\n```\n\u003e\u003e\u003e import libyang\n\u003e\u003e\u003e ctx = libyang.Context('poc')\n\u003e\u003e\u003e\n\u003e\u003e\u003e play_mod= ctx.load_module('playroom')\n\u003e\u003e\u003e play_dict={'playroom-container':{'playroom-list': [{'name': 'dodge', 'play': 'gogogo'}]}}\n\u003e\u003e\u003e play_tree = play_mod.parse_data_dict(play_dict, validate=False)\n\u003e\u003e\u003e\n\u003e\u003e\u003e play_tree.print_dict()\n{'playroom-container': {'playroom-list': [{'name': 'dodge', 'play': 'gogogo'}]}}\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e class_mod= ctx.load_module('classroom')\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e play_tree.print_dict()\n{'playroom-container': {}}\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e class_dict={'classroom-container': {'classroom-list': [{'name': 'grade5', 'teacher-present': True, 'shout': 'wohoo'}]}}\n\u003e\u003e\u003e class_tree = class_mod.parse_data_dict(class_dict, validate=False)\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e class_tree.print_dict()\n{'classroom-container': {'classroom-list': [{'name': 'grade5', 'teacher-present': True, 'shout': 'wohoo'}]}}\n\u003e\u003e\u003e\n\u003e\u003e\u003e\n\u003e\u003e\u003e play_tree.print_dict()\nSegmentation fault\n```\n\nThe yang definitions are as below:\n```\nmodule str-types {\n\tnamespace \"http://str-types\";\n\tprefix \"str-types\";\n\ttypedef name-type {\n\t\ttype string;\n\t}\n\tgrouping chaos {\n\t\tleaf shout {\n\t\t\ttype name-type;\n\t\t}\n\t}\n}\n```\n```\nmodule playroom {\n\tnamespace \"http://playroom\";\n\tprefix \"playroom\";\n\timport str-types { prefix str-types; }\n\tcontainer playroom-container {\n\t\tlist playroom-list {\n\t\t\tkey \"name\";\n\t\t\tleaf name {\n\t\t\t\ttype string;\n\t\t\t}\n\n\t\t\tleaf play {\n\t\t\t\ttype str-types:name-type;\n\t\t\t}\n\t\t}\n\t}\n}\n```\n```\nmodule classroom {\n\tnamespace \"http://classroom\";\n\tprefix \"classroom\";\n\timport str-types { prefix str-types; }\n\tcontainer classroom-container {\n\t\tlist classroom-list {\n\t\t\tkey \"name\";\n\t\t\tleaf name {\n\t\t\t\ttype string;\n\t\t\t}\n\t\t\tleaf teacher-present {\n\t\t\t\ttype boolean;\n\t\t\t}\n\n\t\t\tuses str-types:chaos {\n\t\t\t\twhen \"not(./teacher-present) or ./teacher-present = 'false'\";\n\t\t\t}\n\t\t\tleaf study {\n\t\t\t\twhen \"../teacher-present and ../teacher-present = 'true'\";\n\t\t\t\ttype str-types:name-type;\n\t\t\t}\n\t\t}\n\t}\n}\n```","author":{"url":"https://github.com/Unniboy","@type":"Person","name":"Unniboy"},"datePublished":"2025-04-01T03:18:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/136/libyang-python/issues/136"}