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8a812c3fda
When we try to load an extension multiple times, we still overwrite the type, module number, and handle. If the module number is used to indicate module boundaries (e.g. in reflection and in dom, see e.g. dom_objects_set_class_ex), then all sorts of errors can happen. In the case of ext/dom, OP's error happens because the following happens: - The property handler is set up incorrectly in dom_objects_set_class_ex() because the wrong module number is specified. The class highest in the hierarchy is DOMNode, so the property handler is incorrectly set to that of DOMNode instead of DOMDocument. - The documentElement property doesn't exist on DOMNode, it only exists on DOMDocument, so it tries to read using zend_std_read_property(). As there is no user property called documentElement, that read operation returns an undef value. However, the type is still checked, resulting in the strange exception. Solve this by changing the API such that the data is only overwritten if it's owned data. Closes GH-12246. |
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