44629 2010-08-25 11:49:03 -0700 Crash when switching to tiled layer when parent is also a tiled layer 2010-08-26 10:33:06 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) PC Windows 7 RESOLVED FIXED InRadar P2 Normal --- 1 cmarrin cmarrin oldest_to_newest 269407 0 cmarrin 2010-08-25 11:49:03 -0700 There is a case (found with a Bing page) where causing a layer to go from non-tiled to tiled causes a crash when that layer has a tiled layer parent. A test case is forthcoming. 269471 1 65466 cmarrin 2010-08-25 13:29:27 -0700 Created attachment 65466 test showing problem 269533 2 65479 cmarrin 2010-08-25 15:09:12 -0700 Created attachment 65479 Patch with test case 269535 3 cmarrin 2010-08-25 15:12:12 -0700 rdar://problem/8223788 269538 4 65479 simon.fraser 2010-08-25 15:17:03 -0700 Comment on attachment 65479 Patch with test case WebCore/platform/graphics/win/WKCACFLayer.h:65 + ASSERT(CACFLayerGetUserData(layer) != reinterpret_cast<void*>(0xDeadBeef)); I think 0xDeadBeef should be all lower- or uppercase. WebCore/platform/graphics/win/WKCACFLayer.cpp:185 + CACFLayerSetUserData(layer(), reinterpret_cast<void*>(0xDeadBeef)); Only do this in debug builds. Seems like the underlying cause is that we mess with sublayerCount() for tiled layers. It would be nice to find a way to avoid that source of confusion. 269949 5 cmarrin 2010-08-26 10:33:06 -0700 Landed in http://trac.webkit.org/changeset/66050 65466 2010-08-25 13:29:27 -0700 2010-08-25 13:29:27 -0700 test showing problem crash-reparent-tiled-layer.html text/html 1482 cmarrin PCFET0NUWVBFIGh0bWw+CjxodG1sPgogIDxoZWFkPgogICAgPHRpdGxlPlRlc3QgdGhhdCBzd2l0 Y2hpbmcgdG8gdGlsZWQgbGF5ZXJzIHdoZW4gdGhlIHBhcmVudCBpcyBhIHRpbGVkIGxheWVyIGRv ZXMgbm90IGNyYXNoPC90aXRsZT4KCiAgICA8c3R5bGUgdHlwZT0idGV4dC9jc3MiIG1lZGlhPSJz Y3JlZW4iPgoKICAgICNjb250YWluZXIgewogICAgICB3aWR0aDogNTAwcHg7CiAgICAgIGhlaWdo dDogNTAwMHB4OwogICAgICBib3JkZXI6IDFweCBzb2xpZCBibGFjazsKICAgICAgYmFja2dyb3Vu ZC1jb2xvcjogeWVsbG93OwogICAgICAtd2Via2l0LXRyYW5zZm9ybTp0cmFuc2xhdGVaKDApOwog ICAgfQogICAgCiAgICAjYm94IHsKICAgICAgICBwb3NpdGlvbjogYWJzb2x1dGU7CiAgICAgICAg bGVmdDo1MHB4OwogICAgICAgIHdpZHRoOiAyMDBweDsKICAgICAgICBoZWlnaHQ6IDIwMHB4Owog ICAgICAgIC13ZWJraXQtdHJhbnNmb3JtOnRyYW5zbGF0ZVooMCk7CiAgICAgICAgdG9wOiAxMDBw 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