209021 2020-03-12 15:02:16 -0700 Crash in TextManipulationController::replace 2020-03-12 16:31:30 -0700 1 1 1 Unclassified WebKit HTML Editing WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 rniwa rniwa cdumez ews-watchlist megan_gardner mifenton wenson_hsieh oldest_to_newest 1629379 0 rniwa 2020-03-12 15:02:16 -0700 TextManipulationController::replace can crash when accessing TextIterator::node and other places. 1629385 1 393421 rniwa 2020-03-12 15:16:30 -0700 Created attachment 393421 Fixes the bug 1629389 2 393421 wenson_hsieh 2020-03-12 15:41:18 -0700 Comment on attachment 393421 Fixes the bug View in context: https://bugs.webkit.org/attachment.cgi?id=393421&action=review > Source/WebCore/editing/TextManipulationController.cpp:580 > + Position insertionPoint = positionBeforeNode(firstContentNode.get()).parentAnchoredEquivalent(); Is it possible `firstContentNode` is null here? That would lead to a debug assertion in positionBeforeNode. (Seems like the answer is no because we’d already bail in the early return above…?) 1629394 3 393421 rniwa 2020-03-12 15:45:56 -0700 Comment on attachment 393421 Fixes the bug View in context: https://bugs.webkit.org/attachment.cgi?id=393421&action=review >> Source/WebCore/editing/TextManipulationController.cpp:580 >> + Position insertionPoint = positionBeforeNode(firstContentNode.get()).parentAnchoredEquivalent(); > > Is it possible `firstContentNode` is null here? That would lead to a debug assertion in positionBeforeNode. > > > (Seems like the answer is no because we’d already bail in the early return above…?) I don't think so because to get here, we must have had at least one token, which means we must have had at least one content node. 1629415 4 rniwa 2020-03-12 16:29:32 -0700 Committed r258371: <https://trac.webkit.org/changeset/258371> 1629416 5 rniwa 2020-03-12 16:29:57 -0700 <rdar://problem/60376855> 393421 2020-03-12 15:16:30 -0700 2020-03-12 16:31:30 -0700 Fixes the bug fix209021.patch text/plain 7763 rniwa SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDI1ODMxNCkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDIzIEBACisyMDIwLTAzLTEyICBSeW9zdWtl IE5pd2EgIDxybml3YUB3ZWJraXQub3JnPgorCisgICAgICAgIENyYXNoIGluIFRleHRNYW5pcHVs YXRpb25Db250cm9sbGVyOjpyZXBsYWNlCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3Jn L3Nob3dfYnVnLmNnaT9pZD0yMDkwMjEKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9P 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