70666 2011-10-21 19:49:53 -0700 BitmapImage::dataChanged() does not reset enough incomplete frames 2011-10-31 18:06:21 -0700 1 1 1 Unclassified WebKit Images 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 pkasting pkasting webkit.review.bot oldest_to_newest 488823 0 112060 pkasting 2011-10-21 19:49:53 -0700 Created attachment 112060 Manual testcase BitmapData::dataChanged() assumes (unconditionally!) that the last frame it currently has in |m_frames| is affected when more data arrives, and none of the others are. This is not true for ICO files, where we may have a variety of different frames (due to different parts of the browser asking for different sizes) but any or all of them may be incompletely decoded and may need to have their cached metadata reset. Therefore, this needs to be fixed to iterate through |m_frames| and clear all incomplete ones. Technically, my fix will also save us from unnecessarily clearing the last frame in the list (for any image type) if it was already "complete", although since the underlying decoder often caches this, I doubt that will have any noticeable perf impact. Attached is a manual testcase that repros the problem for me if opened in an incognito Chrome window -- pressing "play" shows a partial Ars Technica logo. I specify an incognito window because this way you can close the window and then open a new one to flush the cache, without which you won't reproduce the bug after one try (unless you manually clear the cache). 488825 1 112061 pkasting 2011-10-21 19:53:34 -0700 Created attachment 112061 patch v1 488826 2 webkit.review.bot 2011-10-21 19:55:49 -0700 Attachment 112061 did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebCore/ChangeLog', u'Source/WebCor..." exit_code: 1 Source/WebCore/platform/graphics/BitmapImage.cpp:198: Should have only a single space after a punctuation in a comment. [whitespace/comments] [5] Source/WebCore/platform/graphics/BitmapImage.cpp:199: Should have only a single space after a punctuation in a comment. [whitespace/comments] [5] Source/WebCore/platform/graphics/BitmapImage.cpp:201: Should have only a single space after a punctuation in a comment. [whitespace/comments] [5] Source/WebCore/platform/graphics/BitmapImage.cpp:213: Should have only a single space after a punctuation in a comment. [whitespace/comments] [5] Total errors found: 4 in 2 files If any of these errors are false positives, please file a bug against check-webkit-style. 488828 3 112062 pkasting 2011-10-21 20:01:36 -0700 Created attachment 112062 patch v2 Hate that style rule 493642 4 112062 jamesr 2011-10-31 17:07:59 -0700 Comment on attachment 112062 patch v2 R=me 493689 5 112062 webkit.review.bot 2011-10-31 18:06:14 -0700 Comment on attachment 112062 patch v2 Clearing flags on attachment: 112062 Committed r98930: <http://trac.webkit.org/changeset/98930> 493690 6 webkit.review.bot 2011-10-31 18:06:21 -0700 All reviewed patches have been landed. Closing bug. 112060 2011-10-21 19:49:53 -0700 2011-10-21 19:49:53 -0700 Manual testcase bar.html text/html 220 pkasting DQo8c2NyaXB0Pg0KdmFyIGltZzsNCmZ1bmN0aW9uIHJ1bigpIHsNCiAgaW1nID0gbmV3IEltYWdl KCk7DQogIGltZy5zcmMgPSAiaHR0cDovL2Fyc3RlY2huaWNhLmNvbS9mYXZpY29uLmljbyI7DQog IGRvY3VtZW50LmJvZHkuYXBwZW5kQ2hpbGQoaW1nKTsNCn0NCjwvc2NyaXB0Pg0KPGlucHV0IHR5 cGU9YnV0dG9uIHZhbHVlPVBsYXkgb25jbGljaz0icnVuKCkiPg0KPGJyPjxicj4NCg== 112061 2011-10-21 19:53:34 -0700 2011-10-21 20:01:36 -0700 patch v1 patch text/plain 3469 pkasting SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDk4MTgzKQorKysgU291cmNlL1dlYkNvcmUvQ2hhbmdl TG9nCSh3b3JraW5nIGNvcHkpCkBAIC0xLDMgKzEsMTYgQEAKKzIwMTEtMTAtMjEgIFBldGVyIEth c3RpbmcgIDxwa2FzdGluZ0Bnb29nbGUuY29tPgorCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJr aXQub3JnL3Nob3dfYnVnLmNnaT9pZD03MDY2NgorICAgICAgICBCaXRtYXBJbWFnZTo6ZGF0YUNo 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