Fix GH-22570: stack overflow serializing a deeply nested Dom\XMLDocument#22576
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iliaal wants to merge 1 commit into
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Fix GH-22570: stack overflow serializing a deeply nested Dom\XMLDocument#22576iliaal wants to merge 1 commit into
iliaal wants to merge 1 commit into
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…cument The new-DOM XML serializer recurses through dom_xml_serialization_algorithm() for every element child, so a document nested deeply enough overflows the C stack and crashes during saveXml() or innerHTML. Add a stack-limit check at the dispatcher, throwing an Error on overflow, mirroring bd724bd. Gate the "Could not save document" warning and the innerHTML not-well-formed exception with !EG(exception) so the thrown Error propagates cleanly instead of being accompanied by a warning or replaced with the wrong exception type. Fixes phpGH-22570
devnexen
approved these changes
Jul 3, 2026
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The test seems to fail frequently in nightly. Can you please check? https://github.com/php/php-src/actions/runs/28725922777/job/85183280824 |
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A deeply nested
Dom\XMLDocumentoverflows the C stack when serialized, since the XML serializer recurses per element child. Adds a stack-limit check at the dispatcher (throwing anErroron overflow, like bd724bd forvarserialization) and gates thesaveXmlwarning andinnerHTMLexception with!EG(exception)so the thrownErrorisn't masked or replaced.Fixes #22570