Bug 175578

Confirmed, debugger crash

Here using:

Qt: 4.4.3
KDE: 4.1.86 (KDE 4.1.86 (KDE 4.2 >= 20081221))
kdelibs svn rev. 901624 / kdebase svn rev. 901624
on ArchLinux x86_64 - Kernel 2.6.27.10

I can reproduce the crash using the testcase HTML when the JS Debugger and Report Errors are enabled.

Backtrace:

Application: Konqueror (konqueror), signal SIGSEGV
0x00007fd728b81fd0 in __nanosleep_nocancel () from /lib/libc.so.6

Thread 1 (Thread 0x7fd72dbfd750 (LWP 5573)):
[KCrash Handler]
#5  KJS::Debugger::reportSourceParsed (this=0x11c8c60, exec=0x1406030, body=0x0, source=<value optimized out>, startingLineNumber=0, errorLine=0, errorMsg=@0x7fff35d3d660)
    at /home/kde-devel/kde/src/KDE/kdelibs/kjs/debugger.cpp:158
#6  0x00007fd71e5b5a76 in KJS::FunctionObjectImp::construct (this=<value optimized out>, exec=0x1406030, args=@0x7fff35d3d810, functionName=@0x7fff35d3d7f0, sourceURL=@0x7fff35d3d7e0, lineNumber=0)
    at /home/kde-devel/kde/src/KDE/kdelibs/kjs/function_object.cpp:194
#7  0x00007fd71ecdc1d6 in KJS::JSLazyEventListener::parseCode (this=0x11d5390) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/ecma/kjs_events.cpp:193
#8  0x00007fd71ecddd99 in KJS::JSLazyEventListener::handleEvent (this=0x11c8c20, evt=@0x1406030) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/ecma/kjs_events.cpp:157
#9  0x00007fd71eac1515 in DOM::NodeImpl::handleLocalEvents (this=<value optimized out>, evt=0x1541270, useCapture=false) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/xml/dom_nodeimpl.cpp:727
#10 0x00007fd71eac1a29 in DOM::NodeImpl::dispatchGenericEvent (this=0x11ed220, evt=0x1541270) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/xml/dom_nodeimpl.cpp:499
#11 0x00007fd71eac1aae in DOM::NodeImpl::dispatchEvent (this=0x11ed220, evt=0x1541270, exceptioncode=@0x7fff35d3dadc, tempEvent=true)
    at /home/kde-devel/kde/src/KDE/kdelibs/khtml/xml/dom_nodeimpl.cpp:451
#12 0x00007fd71ea1cec1 in KHTMLView::dispatchMouseEvent (this=0x130ce30, eventId=3, targetNode=0x11ed220, targetNodeNonShared=<value optimized out>, cancelable=<value optimized out>, detail=1, 
    _mouse=0x7fff35d3dc00, setUnder=true, mouseEventType=1, orient=0) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/khtmlview.cpp:3721
#13 0x00007fd71ea26afc in KHTMLView::mouseReleaseEvent (this=0x130ce30, _mouse=0x7fff35d3e660) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/khtmlview.cpp:1616
#14 0x00007fd72a72dcb4 in QWidget::event (this=0x130ce30, event=0x7fff35d3e660) at kernel/qwidget.cpp:7163
#15 0x00007fd71ea254bd in KHTMLView::widgetEvent (this=0x130ce30, e=0x1406030) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/khtmlview.cpp:2365
#16 0x00007fd71ea25774 in KHTMLView::eventFilter (this=0x130ce30, o=0x1316fc0, e=0x7fff35d3e660) at /home/kde-devel/kde/src/KDE/kdelibs/khtml/khtmlview.cpp:2229
#17 0x00007fd72b3247f7 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1316fc0, event=0x7fff35d3e660) at kernel/qcoreapplication.cpp:694
#18 0x00007fd72a6db07c in QApplicationPrivate::notify_helper (this=0xf0a8d0, receiver=0x1316fc0, e=0x7fff35d3e660) at kernel/qapplication.cpp:3799
#19 0x00007fd72a6e2c65 in QApplication::notify (this=<value optimized out>, receiver=0x1316fc0, e=0x7fff35d3e660) at kernel/qapplication.cpp:3528
#20 0x00007fd72c1446ab in KApplication::notify (this=0x7fff35d3f4d0, receiver=0x1316fc0, event=0x7fff35d3e660) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#21 0x00007fd72b324d90 in QCoreApplication::notifyInternal (this=0x7fff35d3f4d0, receiver=0x1316fc0, event=0x7fff35d3e660) at kernel/qcoreapplication.cpp:583
#22 0x00007fd72a6e1fe2 in QApplicationPrivate::sendMouseEvent (receiver=0x1316fc0, event=0x7fff35d3e660, alienWidget=0x1316fc0, nativeWidget=0x10580d0, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7fd72afcb450) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212
#23 0x00007fd72a73fbec in QETWidget::translateMouseEvent (this=0x10580d0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4044
#24 0x00007fd72a73ed47 in QApplication::x11ProcessEvent (this=0x7c, event=0x7fff35d3ef30) at kernel/qapplication_x11.cpp:3162
#25 0x00007fd72a763724 in x11EventSourceDispatch (s=0xf0e0f0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#26 0x00007fd726d18aa2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#27 0x00007fd726d1c21d in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#28 0x00007fd726d1c3db in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#29 0x00007fd72b34bcdf in QEventDispatcherGlib::processEvents (this=0xee0170, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:319
#30 0x00007fd72a762f7f in QGuiEventDispatcherGlib::processEvents (this=0x11c8c20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:198
#31 0x00007fd72b3239c2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 903082528}) at kernel/qeventloop.cpp:143
#32 0x00007fd72b323b55 in QEventLoop::exec (this=0x7fff35d3f260, flags={i = 903082608}) at kernel/qeventloop.cpp:190
#33 0x00007fd72b3288f7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845
#34 0x00007fd72d8f6ac9 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /home/kde-devel/kde/src/KDE/kdebase/apps/konqueror/src/konqmain.cpp:257
#35 0x00007fd728b01546 in __libc_start_main () from /lib/libc.so.6
#36 0x00000000004007c9 in _start ()

*** Bug 179054 has been marked as a duplicate of this bug. ***

*** Bug 177797 has been marked as a duplicate of this bug. ***

*** Bug 178240 has been marked as a duplicate of this bug. ***

*** Bug 180693 has been marked as a duplicate of this bug. ***

*** Bug 181732 has been marked as a duplicate of this bug. ***

*** Bug 181836 has been marked as a duplicate of this bug. ***

*** Bug 183545 has been marked as a duplicate of this bug. ***

I am wondering: did all of you folks turn the debugger on yourselves, or was it perhaps on by distro defaults (which would be very bad...)?

(will hopefully commit a fix for this today)

I turned it on for one of my own pages and forgot it was enabled...

*** Bug 183580 has been marked as a duplicate of this bug. ***

*** Bug 183929 has been marked as a duplicate of this bug. ***

(In reply to comment #10)
> I am wondering: did all of you folks turn the debugger on yourselves, or was it
> perhaps on by distro defaults (which would be very bad...)?

I don't remember turning it on myself (although I used it a long time ago), so I guess that in Debian it was the default at some point (I just copied my configs from KDE3 to KDE4).

Currently the "Defaults" button turns it off.

SVN commit 926127 by orlovich:

Fix debugger crashes during parse errors. In particular, it means 
reportSourceParsed can't rely on there being an AST; and ditto
for reportException. Also fix the code to report the top-level 
parse errors to the debugger; and adjust the debugger UI to 
handle these cases properly, by just displaying the code (and not 
getting confused trying to stop non-running code)
BUG: 175578


 M  +15 -5     khtml/ecma/debugger/debugwindow.cpp  
 M  +5 -0      khtml/ecma/debugger/interpreter_ctx.cpp  
 M  +2 -0      khtml/ecma/debugger/interpreter_ctx.h  
 M  +7 -4      kjs/debugger.cpp  
 M  +2 -1      kjs/debugger.h  
 M  +1 -1      kjs/function.cpp  
 M  +1 -1      kjs/function_object.cpp  
 M  +9 -4      kjs/interpreter.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=926127

SVN commit 926128 by orlovich:

Merged revision 926127:
Fix debugger crashes during parse errors. In particular, it means 
reportSourceParsed can't rely on there being an AST; and ditto
for reportException. Also fix the code to report the top-level 
parse errors to the debugger; and adjust the debugger UI to 
handle these cases properly, by just displaying the code (and not 
getting confused trying to stop non-running code)
BUG: 175578

 M  +15 -5     khtml/ecma/debugger/debugwindow.cpp  
 M  +5 -0      khtml/ecma/debugger/interpreter_ctx.cpp  
 M  +2 -0      khtml/ecma/debugger/interpreter_ctx.h  
 M  +7 -4      kjs/debugger.cpp  
 M  +2 -1      kjs/debugger.h  
 M  +1 -1      kjs/function.cpp  
 M  +1 -1      kjs/function_object.cpp  
 M  +9 -4      kjs/interpreter.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=926128

*** Bug 184569 has been marked as a duplicate of this bug. ***

*** Bug 185024 has been marked as a duplicate of this bug. ***

*** Bug 185611 has been marked as a duplicate of this bug. ***