Bug 28295 – Assertion when background-image changes from multiple to single image

• Status: RESOLVED
• Resolution: FIXED
• Component: Layout and Rendering

[Simon Fraser (smfr)]

Created attachment 34810 [details]
Testcase

The attached testcase asserts. It changes the image background from using two images to one image. The assertion is:
ASSERTION FAILED: m_clients.contains(client)
(/Volumes/WebKit/WebKit.git/WebCore/loader/CachedResource.cpp:201 void WebCore::CachedResource::removeClient(WebCore::CachedResourceClient*))

from

#0  0x0000000100da0fe4 in WebCore::CachedResource::removeClient (this=0x11adb5ca0, client=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/loader/CachedResource.cpp:201
#1  0x000000010158b031 in WebCore::StyleCachedImage::removeClient (this=0x118b02440, renderer=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/style/StyleCachedImage.cpp:84
#2  0x00000001014a691f in WebCore::RenderObject::arenaDelete (this=0x11adb6058, arena=0x118b1e660, base=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/RenderObject.cpp:1864
#3  0x00000001014a6bb3 in WebCore::RenderObject::destroy (this=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/RenderObject.cpp:1856
#4  0x0000000101457f3d in WebCore::RenderBoxModelObject::destroy (this=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/RenderBoxModelObject.cpp:75
#5  0x000000010144ef1e in WebCore::RenderBox::destroy (this=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/RenderBox.cpp:95
#6  0x000000010141de57 in WebCore::RenderBlock::destroy (this=0x11adb6058) at /Volumes/WebKit/WebKit.git/WebCore/rendering/RenderBlock.cpp:204
#7  0x00000001013b6ed7 in WebCore::Node::detach (this=0x11adad7e0) at /Volumes/WebKit/WebKit.git/WebCore/dom/Node.cpp:1165
...

[Simon Fraser (smfr)]

Created attachment 34813 [details]
Patch, testcase

[Simon Fraser (smfr)]

http://trac.webkit.org/changeset/47270