Bug 131273

Summary: Crash when zooming Google Map with an editable rectangle
Product: WebKit Reporter: Cheng Lan <lan.chg>
Component: WebKit QtAssignee: Nobody <webkit-unassigned>
Status: RESOLVED INVALID    
Severity: Normal    
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: PC   
OS: Windows 7   
Attachments:
Description Flags
call stack when the crash occurred. none

Description Cheng Lan 2014-04-05 17:14:22 PDT 
Sorry I don't know the exact version number for webkit in Qt 5.2.1.
I opened Google map and drew an editable rectangle in it, then zoomed the map in and in. When I was trying to zoom the map to the maximum zoom level, crash occurred.

Here's the output related to the crash:
QPainter::begin: Paint device returned engine == 0, type: 2
ASSERTION FAILED: m_ptr
c:\work\build\qt5_workdir\w\s\qtwebkit\Source\WTF\wtf/OwnPtr.h(72) : WTF::OwnPtr<class WebCore::ImageBuffer>::operator ->

And the call stack is in the attachment. It seems that the "m_image" in the BitmapTextureImageBuffer class is a null empty.
Comment 1 Cheng Lan 2014-04-05 17:15:34 PDT 
Created attachment 228688 [details]
call stack when the crash occurred.
Comment 2 Alexey Proskuryakov 2022-07-29 10:53:34 PDT 
The Qt port has been removed from WebKit, resolving this bug.