[Webkit-unassigned] [Bug 30490] New: [Qt] Plugins : QtWebKit crashes if page is not deleted

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=30490

           Summary: [Qt] Plugins : QtWebKit crashes if page is not deleted
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Plug-ins
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: girish at forwardbias.in


If you open a page with plugins and the QWebPage is not deleted, the program
will crash on exit.

Problem with QWebView or QWeb
int main(int argc, char** argv)
{
    QApplication app(argc, argv);
    QWebSettings::globalSettings()->setAttribute(QWebSettings::PluginsEnabled,
true);
    QWebPage *page = new QWebPage;
    page->mainFrame()->setUrl(app.arguments()[1]);
    QWidget w; w.show();
    app.exec();
    // delete page; // uncomment to not crash
    return 0;
}

The backtrace points to flash (useless, afaict):
#0  0xb605e9e0 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#1  0xb2694d42 in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#2  0xb26e2f92 in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#3  0xb2563a4d in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#4  0xb254d0d0 in ?? () from /usr/lib/adobe-flashplugin/libflashplayer.so
#5  0xb5dfdbb9 in exit () from /lib/tls/i686/cmov/libc.so.6
#6  0xb5de577d in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#7  0x08048b41 in _start () at ../sysdeps/i386/elf/start.S:119

I debugging a little, it appears that if that if page's mainFrame->setView(0)
is the key piece of code that makes it not crash.

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