159367 2016-07-01 13:31:37 -0700 Null cached image for certain uses of -webkit-image-set 2016-07-05 08:43:59 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=159288 https://bugs.webkit.org/show_bug.cgi?id=159373 InRadar P2 Normal --- 1 bfulgham webkit-unassigned bfulgham dino hyatt simon.fraser webkit-bug-importer oldest_to_newest 1207235 0 282572 bfulgham 2016-07-01 13:31:37 -0700 Created attachment 282572 Test case showing the null image Certain web content results in the 'cachedImage' member of the HTMLImageElement's Renderer being set to nullptr. The attached test case illustrates this problem. It seems to be related to the specific use of "-webkit-image-set". There might be some relationship between the size of the containing div and the native size of the images used in this test case. 1207244 1 webkit-bug-importer 2016-07-01 13:48:31 -0700 <rdar://problem/27138301> 1207249 2 bfulgham 2016-07-01 13:51:38 -0700 This markup shows the problem: <div style="width: 572px; height: 572px"> <img id="target" src="resources/test_image.jpg" style="content: -webkit-image-set(url(resources/test_image_1x.jpg) 1x); width: 100%; height: 100%;"> </div> 1207268 3 bfulgham 2016-07-01 14:11:13 -0700 (In reply to comment #2) > This markup shows the problem: > > <div style="width: 572px; height: 572px"> > <img id="target" src="resources/test_image.jpg" style="content: > -webkit-image-set(url(resources/test_image_1x.jpg) 1x); width: 100%; height: > 100%;"> > </div> The scaling is not needed. This is sufficient to trigger the bug: <!DOCTYPE html> <html> <body> <img src="resources/test_image.jpg" style="content: -webkit-image-set(url(resources/test_image_1x.jpg) 1x); width: 100%; height: 100%;"> </body> </html> 1207351 4 bfulgham 2016-07-01 17:06:33 -0700 I think this might only happen when you have an "image-set" that only contains a 1x image, and you attempt to do the copy on a retina system. 1207466 5 simon.fraser 2016-07-02 17:25:44 -0700 Is this actually a crash? 1207849 6 bfulgham 2016-07-05 08:43:59 -0700 (In reply to comment #5) > Is this actually a crash? Yes, although I fixed the specific crash that caused me to notice this problem in Bug 159288. Now we do not crash, but attempts to copy the image result in a blank pasteboard buffer. 282572 2016-07-01 13:31:37 -0700 2016-07-01 13:31:37 -0700 Test case showing the null image Image_Copy_Crash.zip application/zip 6287 bfulgham UEsDBAoAAAAAAG5M4UgAAAAAAAAAAAAAAAARABAASW1hZ2VfQ29weV9DcmFzaC9VWAwAFrV1V9Cb dlf1ARQAUEsDBBQACAAIAHtr3kgAAAAAAAAAAAAAAAAmABAASW1hZ2VfQ29weV9DcmFzaC9pbWFn ZV9jb3B5X2NyYXNoLmh0bWxVWAwAH7V1V8qAdVf1ARQAbY8/D4IwFMR3P0VtYgIDAibGRAqLOuvg 4kQEXtoq/9I+BL69FWpcfMvLJXeX37Hl8Xy43i4nIrAqkwWzL2uKMVkQc6yQL6JxLCGmvSxQ7Ml2 t2mHiAiQXKCVdHZPCVlxolUeUwW66VQO2kfQmMrqzmH9aDn9FuZNjVCbDq+H7CnRmyyeBnQ6VTr/ 8mk4fCpcEg5uRCxRGASrH9CkLBDzDb8Z5M+LmD8PfANQSwcIAxVsWqoAAAD4AAAAUEsDBAoAAAAA AHBM4UgAAAAAAAAAAAAAAAAJABAAX19NQUNPU1gvVVgMANObdlfTm3ZX9QEUAFBLAwQKAAAAAABw TOFIAAAAAAAAAAAAAAAAGgAQAF9fTUFDT1NYL0ltYWdlX0NvcHlfQ3Jhc2gvVVgMANObdlfTm3ZX 9QEUAFBLAwQUAAgACAB7a95IAAAAAAAAAAAAAAAAMQAQAF9fTUFDT1NYL0ltYWdlX0NvcHlfQ3Jh 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