Bug 15308 – ASSERT when clicking and dragging on SVG clock

• Component: SVG
• Status: RESOLVED FIXED

[Eric Seidel (no email)]

ASSERT when clicking and dragging on SVG clock

I assume this is similar to the bug I solved last week, and will require one of the DOMSVG*Elements to implement the _subresources method in order to play nice with how drag and drop expects the WebArchiver to behave.

ASSERTION FAILED: MimeTypeRegistry::isSupportedImageResourceMIMEType([resource MIMEType])
(/Stuff/Projects/WebKit/WebKit/Misc/WebNSPasteboardExtras.mm:253 -[NSPasteboard(WebExtras) _web_writeImage:element:URL:title:archive:types:])

Date/Time:      2007-09-28 11:20:29.173 -0500
OS Version:     10.4.10 (Build 8R2218)
Report Version: 4

Command: Safari
Path:    /Applications/Safari.app/Contents/MacOS/Safari
Parent:  zsh [18887]

Version:        3.0.3 (522.12.1)
Build Version:  2
Project Name:   WebBrowser
Source Version: 45221201

PID:    1979
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0xbbadbeef

Thread 0 Crashed:
0   com.apple.WebKit         	0x0030ecfa -[NSPasteboard(WebExtras) _web_writeImage:element:URL:title:archive:types:] + 826 (WebNSPasteboardExtras.mm:253)
1   com.apple.WebKit         	0x0030e941 -[NSPasteboard(WebExtras) _web_declareAndWriteDragImageForElement:URL:title:archive:source:] + 375 (WebNSPasteboardExtras.mm:278)
2   com.apple.WebKit         	0x003982c2 WebDragClient::declareAndWriteDragImage(NSPasteboard*, DOMElement*, NSURL*, NSString*, WebCore::Frame*) + 272
3   com.apple.WebCore        	0x010446ba WebCore::ClipboardMac::declareAndWriteDragImage(WebCore::Element*, WebCore::KURL const&, WebCore::String const&, WebCore::Frame*) + 246 (ClipboardMac.mm:336)
4   com.apple.WebCore        	0x01416ed3 WebCore::prepareClipboardForImageDrag(WebCore::Frame*, WebCore::Clipboard*, WebCore::Element*, WebCore::KURL const&, WebCore::KURL const&, WebCore::String const&) + 351 (DragController.cpp:511)
5   com.apple.WebCore        	0x014172fc WebCore::DragController::startDrag(WebCore::Frame*, WebCore::Clipboard*, WebCore::DragOperation, WebCore::PlatformMouseEvent const&, WebCore::IntPoint const&, bool) + 1046 (DragController.cpp:588)
6   com.apple.WebCore        	0x013f0c69 WebCore::EventHandler::handleDrag(WebCore::MouseEventWithHitTestResults const&) + 2079 (EventHandler.cpp:1589)
7   com.apple.WebCore        	0x013f0d4b WebCore::EventHandler::handleMouseDraggedEvent(WebCore::MouseEventWithHitTestResults const&) + 31 (EventHandler.cpp:326)
8   com.apple.WebCore        	0x013f2ac4 WebCore::EventHandler::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&) + 1710 (EventHandler.cpp:970)
9   com.apple.WebCore        	0x010ec525 WebCore::FrameView::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&) + 45 (FrameView.cpp:872)
10  com.apple.WebCore        	0x013eb381 WebCore::EventHandler::mouseDragged(NSEvent*) + 353 (EventHandlerMac.mm:490)
11  com.apple.WebKit         	0x0033dadb -[WebHTMLView mouseDragged:] + 233 (WebHTMLView.mm:2994)
12  com.apple.AppKit         	0x93365be1 -[NSWindow sendEvent:] + 7377
13  com.apple.Safari         	0x0009b10c 0x1000 + 631052
14  com.apple.AppKit         	0x93357350 -[NSApplication sendEvent:] + 5023
15  com.apple.Safari         	0x00014c98 0x1000 + 81048
16  com.apple.AppKit         	0x93281dfe -[NSApplication run] + 547
17  com.apple.AppKit         	0x93275d2f NSApplicationMain + 573
18  com.apple.Safari         	0x00002302 0x1000 + 4866
19  com.apple.Safari         	0x00048ef5 0x1000 + 294645

Thread 1:
0   libSystem.B.dylib        	0x9001a1cc select + 12
1   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 2:
0   libSystem.B.dylib        	0x900248c7 semaphore_wait_signal_trap + 7
1   com.apple.Foundation     	0x9284a26c -[NSConditionLock lockWhenCondition:] + 39
2   com.apple.Syndication    	0x9ae9d052 -[AsyncDB _run:] + 181
3   com.apple.Foundation     	0x927f42e0 forkThreadForFunction + 123
4   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 3:
0   libSystem.B.dylib        	0x90009cd7 mach_msg_trap + 7
1   com.apple.CoreFoundation 	0x9082d2b3 CFRunLoopRunSpecific + 2014
2   com.apple.CoreFoundation 	0x9082cace CFRunLoopRunInMode + 61
3   com.apple.Foundation     	0x92829a0f +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] + 259
4   com.apple.Foundation     	0x927f42e0 forkThreadForFunction + 123
5   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 4:
0   libSystem.B.dylib        	0x90009cd7 mach_msg_trap + 7
1   com.apple.CoreFoundation 	0x9082d2b3 CFRunLoopRunSpecific + 2014
2   com.apple.CoreFoundation 	0x9082cace CFRunLoopRunInMode + 61
3   com.apple.Foundation     	0x92850bc2 +[NSURLCache _diskCacheSyncLoop:] + 206
4   com.apple.Foundation     	0x927f42e0 forkThreadForFunction + 123
5   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 5:
0   libSystem.B.dylib        	0x900248c7 semaphore_wait_signal_trap + 7
1   com.apple.Foundation     	0x9284a26c -[NSConditionLock lockWhenCondition:] + 39
2   com.apple.AppKit         	0x9335f270 -[NSUIHeartBeat _heartBeatThread:] + 377
3   com.apple.Foundation     	0x927f42e0 forkThreadForFunction + 123
4   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 6:
0   libSystem.B.dylib        	0x90009cd7 mach_msg_trap + 7
1   com.apple.opengl         	0x931dd6d8 glcDebugListener + 338
2   libSystem.B.dylib        	0x90024227 _pthread_body + 84

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0xbbadbeef  ebx: 0x0030e9ce  ecx: 0xa0001e80  edx: 0x00000000
  edi: 0x18c6b090  esi: 0x00000001  ebp: 0xbfffe788  esp: 0xbfffe720
   ss: 0x0000001f  efl: 0x00010286  eip: 0x0030ecfa   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x00000000   gs: 0x00000037

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0x949bf000 - 0x949cefff libsasl2.2.dylib 	/usr/lib/libsasl2.2.dylib
0x949d2000 - 0x949f7fff libssl.0.9.7.dylib 	/usr/lib/libssl.0.9.7.dylib
0x94a03000 - 0x94a20fff libresolv.9.dylib 	/usr/lib/libresolv.9.dylib
0x95a95000 - 0x95a9afff com.apple.agl 2.5.9 (AGL-2.5.9)	/System/Library/Frameworks/AGL.framework/Versions/A/AGL
0x95a9e000 - 0x95ac1fff libxslt.1.dylib 	/usr/lib/libxslt.1.dylib
0x95e39000 - 0x95eb9fff com.apple.QTKit 7.2	/System/Library/Frameworks/QTKit.framework/Versions/A/QTKit
0x95f27000 - 0x95f5ffff com.apple.PDFKit 1.0.4	/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/PDFKit.framework/Versions/A/PDFKit
0x96e94000 - 0x96e94fff com.apple.vecLib 3.3.1 (vecLib 3.3.1)	/System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x9740a000 - 0x974e1fff libGLProgrammability.dylib 	/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLProgrammability.dylib
0x974fc000 - 0x974fdfff libGLSystem.dylib 	/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLSystem.dylib
0x97e78000 - 0x97f4ffff com.apple.QuartzComposer 1.2.6 (32.25)	/System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/QuartzComposer.framework/Versions/A/QuartzComposer
0x97fd8000 - 0x97fd8fff com.apple.quartzframework 1.0	/System/Library/Frameworks/Quartz.framework/Versions/A/Quartz
0x98f04000 - 0x99d68fff com.apple.QuickTimeComponents.component 7.2	/System/Library/QuickTime/QuickTimeComponents.component/Contents/MacOS/QuickTimeComponents
0x9ae9a000 - 0x9aed1fff com.apple.Syndication 1.0.6 (54)	/System/Library/PrivateFrameworks/Syndication.framework/Versions/A/Syndication
0x9aeed000 - 0x9aefffff com.apple.SyndicationUI 1.0.6 (54)	/System/Library/PrivateFrameworks/SyndicationUI.framework/Versions/A/SyndicationUI

Model: MacBookPro1,1, BootROM MBP11.0055.B08, 2 processors, Intel Core Duo, 2.16 GHz, 2 GB
Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 1 GB, DDR2 SDRAM, 667 MHz
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x86), 1.1.8.5
Bluetooth: Version 1.9.0f8, 2 service, 0 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST9100824AS, 93.16 GB
Parallel ATA Device: MATSHITADVD-R   UJ-857
USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA
USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA

[Eric Seidel (no email)]

This bug in fact appears identical to the one I fixed last week.  There must still be something wrong in how DOMSVGImageElement is behaving.

[Eric Seidel (no email)]

This is the same bug as bug 15281, but it appears it's not quite fixed (at least not for all examples).

[Eric Seidel (no email)]

Well, this is the problem:
2007-09-28 21:06:41.521 Safari[3227] Creating wrapper for: svg image http://www.w3.org/2000/svg, using class: DOMSVGElement

Now the question is just *why* is it creating the wrong DOM wrapper.

[Eric Seidel (no email)]

Ok, the problem is:

typedef HashMap<const QualifiedName::QualifiedNameImpl*, Class> ObjCClassMap;
static ObjCClassMap* elementClassMap;

It's doing a default pointer-compare between QualifiedNameImpls, which is wrong.  We don't care what the .prefix() is, only that the localName and namespaceURI are identical.  I expect we have this bug other places in WebKit!

[Eric Seidel (no email)]

Created attachment 16443 [details]
the fix

[Eric Seidel (no email)]

landed as r25802 on feature-branch

[Sam Weinig]

Comment on attachment 16443 [details]
the fix

r=me for the Feature branch with the test that Eric showed me.