designer-qt4 crashed with SIGSEGV in QList()

[Jacco van Schaik]

Adding signal, selected a Sender, then tried to select a Signal and the program crashed.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: qt4-designer 4:4.6.2-0ubuntu5.3
ProcVersionSignature: Ubuntu 2.6.32-36.79-generic 2.6.32.46+drm33.20
Uname: Linux 2.6.32-36-generic x86_64
Architecture: amd64
Date: Thu Nov 24 10:57:33 2011
ExecutablePath: /usr/bin/designer-qt4
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
ProcCmdline: /usr/bin/designer-qt4
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SegvAnalysis:
 Segfault happened at: 0x7f0f2c6a6700 <_ZNK18qdesigner_internal16MetaDataBaseItem11fakeSignalsEv>: mov 0x38(%rsi),%rax
 PC (0x7f0f2c6a6700) ok
 source "0x38(%rsi)" (0x00000038) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: qt4-x11
StacktraceTop:
 qdesigner_internal::MetaDataBaseItem::fakeSignals() const () from /usr/lib/libQtDesigner.so.4
 ?? () from /usr/lib/libQtDesignerComponents.so.4
 ?? () from /usr/lib/libQtDesignerComponents.so.4
 ?? () from /usr/lib/libQtGui.so.4
 ?? () from /usr/lib/libQtGui.so.4
Title: designer-qt4 crashed with SIGSEGV in qdesigner_internal::MetaDataBaseItem::fakeSignals()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (polkit-gnome-authentication-agent-1:2034): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (rhythmbox:2026): Rhythmbox-WARNING **: Unable to initialize mDNS: Daemon not running
 (rhythmbox:2026): Rhythmbox-WARNING **: Unable to start mDNS browsing: mDNS service is not running

[Apport retracing service (apport)]

StacktraceTop:
 QList (l=<optimized out>, this=<optimized out>) at ../../../../include/QtCore/../../src/corelib/tools/qlist.h:114
 QStringList (l=<optimized out>, this=<optimized out>) at ../../../../include/QtCore/../../src/corelib/tools/qstringlist.h:71
 qdesigner_internal::MetaDataBaseItem::fakeSignals (this=0x0) at shared/metadatabase.cpp:135
 memberList<<unnamed>::SignalMatchesSlotPredicate, <unnamed>::ReverseClassesMemberIterator> (it=<optimized out>, predicate=<optimized out>, member_type=<optimized out>, object=<optimized out>, core=<optimized out>, showAll=<optimized out>) at ../signalsloteditor/signalslot_utils.cpp:123
 qdesigner_internal::reverseClassesMemberFunctions (obj_name=<optimized out>, member_type=qdesigner_internal::SignalMember, peer=<optimized out>, form=<optimized out>) at ../signalsloteditor/signalslot_utils.cpp:256

[dino99 (9d9)]

Closing that outdated report as EOL has been reached long time ago