gbx3 crashed with SIGSEGV in QGtkStyle::drawComplexControl()

[Pixel]

Crash during an application development

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: gambas3-runtime 3.1.1-2ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-10.10-generic 3.5.1
Uname: Linux 3.5.0-10-generic i686
ApportVersion: 2.4-0ubuntu8
Architecture: i386
CrashCounter: 1
Date: Fri Aug 17 22:41:25 2012
ExecutablePath: /usr/bin/gbx3
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120724.2)
ProcCmdline: gbr3 /usr/bin/gambas3
SegvAnalysis:
 Segfault happened at: 0xb5dee7cc <_ZNK9QGtkStyle18drawComplexControlEN6QStyle14ComplexControlEPK19QStyleOptionComplexP8QPainterPK7QWidget+5884>: mov 0x18(%eax),%esi
 PC (0xb5dee7cc) ok
 source "0x18(%eax)" (0x00000018) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gambas3
StacktraceTop:
 QGtkStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const () from /usr/lib/i386-linux-gnu/libQtGui.so.4
 QScrollBar::paintEvent(QPaintEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
 QWidget::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
 QAbstractSlider::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
 QScrollBar::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
Title: gbx3 crashed with SIGSEGV in QGtkStyle::drawComplexControl()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 QGtkStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const () from /tmp/tmpbkfR8Y/usr/lib/i386-linux-gnu/libQtGui.so.4
 QScrollBar::paintEvent(QPaintEvent*) () from /tmp/tmpbkfR8Y/usr/lib/i386-linux-gnu/libQtGui.so.4
 QWidget::event(QEvent*) () from /tmp/tmpbkfR8Y/usr/lib/i386-linux-gnu/libQtGui.so.4
 QAbstractSlider::event(QEvent*) () from /tmp/tmpbkfR8Y/usr/lib/i386-linux-gnu/libQtGui.so.4
 QScrollBar::event(QEvent*) () from /tmp/tmpbkfR8Y/usr/lib/i386-linux-gnu/libQtGui.so.4