René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Possible Regression: RecursionError validating oneOf/allOf schema in 0.7.2 (works in 0.7.1)","articleBody":"## Summary\nAn OpenAPI 3.1 schema that validated fine with **openapi-spec-validator 0.7.1** now fails with a `RecursionError` in **0.7.2**\n\n\n### Environment\n\nopenapi-spec-validator | 0.7.2 ❌  / 0.7.1 ✅\nuv 0.7.3 (3c413f74b 2025-05-07)\n\n\n## Minimal reproduction\n\n```python\n# validate.py\n# /// script\n# requires-python = \"\u003e=3.12\"\n# dependencies = [\n#    \"openapi-spec-validator==0.7.2\" # TODO: test with 0.7.1\n# ]\n# ///\n\n\nimport yaml\nfrom openapi_spec_validator import validate\n\nopenapi_spec = \"\"\"\nopenapi: 3.1.0\ninfo:\n  title: Recursion Bug Demo\n  version: 0.1.0\ncomponents:\n  schemas:\n    PropertyConstraint:\n      type: object\n      oneOf:\n        - $ref: '#/components/schemas/PropertyEqualityConstraint'\n        - $ref: '#/components/schemas/PropertyRangeConstraint'\n      properties:\n        property_id:\n          type: string\n        type:\n          type: string\n      required: [type]\n\n    PropertyEqualityConstraint:\n      allOf:\n        - $ref: '#/components/schemas/PropertyConstraint'\n        - type: object\n          properties:\n            property_id:\n              type: string\n            property_value: {}\n          required: [property_id, property_value]\n\n    PropertyRangeConstraint:\n      allOf:\n        - $ref: '#/components/schemas/PropertyConstraint'\n        - type: object\n          properties:\n            property_id:\n              type: string\n            min: {}\n            max: {}\n          required: [property_id, min, max]\n\"\"\"\n\n\nparsed_spec = yaml.safe_load(openapi_spec)\nvalidate(parsed_spec)\nprint(\"valid\")\n\n``` \n```bash\n\u003e uv run validate.py\nRecursionError: maximum recursion depth exceeded\n```\n\nSet the version to 0.7.1 in the uv script tag at the top.\n\n```bash\n\u003e uv run validate.py\nvalid\n```\n\nHas anyone else observed this behaviour? ","author":{"url":"https://github.com/sammasak","@type":"Person","name":"sammasak"},"datePublished":"2025-06-10T13:04:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/400/openapi-spec-validator/issues/400"}