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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"af.features.Features crashes when its __del__ method is called","articleBody":"When using a `Features()` object, arrayfire crashes silently when calling the object's `__del__()` method if the object's `get_xpos()` method has already been deleted (or has fallen out of scope).\r\n\r\nPotentially due to a similar root case as mentioned in #169 (or due to the changes made as a result of this in commit a9031fb5e0db371bc88c958f0b8d43efd7fe8f45)\r\n\r\nRunning on Windows; using arrayfire 3.8.0.\r\n\r\nMinimum working example:\r\n```python\r\nimport arrayfire as af\r\n\r\ndef get_feature_locations(features):\r\n    # Get x and y positions of features\r\n    x_pos = features.get_xpos()\r\n    y_pos = features.get_ypos()\r\n    \r\n    # If this is uncommented, the code works as intended\r\n    # return x_pos, y_pos\r\n\r\nimg = af.randn(d0=500, d1=500)\r\nfeatures, descriptors = af.orb(img, threshold=1, max_features=10, num_levels=1)\r\nfeature_locations = get_feature_locations(features)\r\n\r\nprint(\"Before delete\")\r\ndel features\r\nprint(\"After delete\")\r\n```\r\n\r\nWhich outputs:\r\n```\r\nBefore delete\r\n```\r\n\r\nUncommenting line 10 (`return x_pos, y_pos`) outputs:\r\n```\r\nBefore delete\r\nAfter delete\r\n```\r\n\r\nThanks!","author":{"url":"https://github.com/dan-nf","@type":"Person","name":"dan-nf"},"datePublished":"2024-09-20T07:43:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/268/arrayfire-python/issues/268"}