#3 Segfault on qchat-server version 0.1.1

[Kiswono Prayogo]

======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x45)[0x52e4dd5]
/lib/i386-linux-gnu/libc.so.6(+0xffd8a)[0x52e4d8a]
/usr/bin/qchat-server[0x8056add]
/usr/bin/qchat-server[0x8051557]
/usr/bin/qchat-server[0x805b214]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN11QMetaObject8metacallEP7QObjectNS_4CallEiPPv+0x3d)[0x10e1c9d]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectPKS_iPPv+0x54d)[0x10f19bd]
/usr/bin/qchat-server[0x805b487]
/usr/bin/qchat-server[0x805498a]
/usr/bin/qchat-server[0x805b56c]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN11QMetaObject8metacallEP7QObjectNS_4CallEiPPv+0x3d)[0x10e1c9d]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectPKS_iPPv+0x54d)[0x10f19bd]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN9QIODevice9readyReadEv+0x35)[0x1141b25]
/usr/lib/i386-linux-gnu/libQtNetwork.so.4(+0xc7a83)[0x1e5a83]
/usr/lib/i386-linux-gnu/libQtNetwork.so.4(+0xb58f9)[0x1d38f9]
/usr/lib/i386-linux-gnu/libQtNetwork.so.4(+0xd068b)[0x1ee68b]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN23QCoreApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x89)[0x10dabc9]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN16QCoreApplication6notifyEP7QObjectP6QEvent+0x64)[0x10dac34]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0x8e)[0x10da97e]
/usr/lib/i386-linux-gnu/libQtCore.so.4(+0x1aef48)[0x110cf48]
/lib/i386-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x146)[0x7033d86]
/lib/i386-linux-gnu/libglib-2.0.so.0(+0x47125)[0x7034125]
/lib/i386-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x41)[0x7034201]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x67)[0x110d887]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE+0x4d)[0x10d950d]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0xf9)[0x10d97a9]
/usr/lib/i386-linux-gnu/libQtCore.so.4(_ZN16QCoreApplication4execEv+0x9a)[0x10deeba]
/usr/bin/qchat-server[0x804bcf5]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x51fe4d3]
/usr/bin/qchat-server[0x804cdad]
======= Memory map: ========
00110000-00117000 r-xp 00000000 08:02 228686 /usr/lib/i386-linux-gnu/libSM.so.6.0.1
00117000-00118000 r--p 00006000 08:02 228686 /usr/lib/i386-linux-gnu/libSM.so.6.0.1
00118000-00119000 rw-p 00007000 08:02 228686 /usr/lib/i386-linux-gnu/libSM.so.6.0.1
00119000-0011b000 r-xp 00000000 08:02 230837 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
0011b000-0011c000 r--p 00001000 08:02 230837 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
0011c000-0011d000 rw-p 00002000 08:02 230837 /usr/lib/i386-linux-gnu/libXau.so.6.0.0
0011d000-0011e000 r-xp 00000000 00:00 0 [vdso]
0011e000-00266000 r-xp 00000000 08:02 233875 /usr/lib/i386-linux-gnu/libQtNetwork.so.4.8.1
00266000-00267000 ---p 00148000 08:02 233875 /usr/lib/i386-linux-gnu/libQtNetwork.so.4.8.1
00267000-0026a000 r--p 00148000 08:02 233875 /usr/lib/i386-linux-gnu/libQtNetwork.so.4.8.1
0026a000-0026b000 rw-p 0014b000 08:02 233875 /usr/lib/i386-linux-gnu/libQtNetwork.so.4.8.1
0026b000-00287000 r-xp 00000000 08:02 135578 /lib/i386-linux-gnu/libgcc_s.so.1
00287000-00288000 r--p 0001b000 08:02 135578 /lib/i386-linux-gnu/libgcc_s.so.1
00288000-00289000 rw-p 0001c000 08:02 135578 /lib/i386-linux-gnu/libgcc_s.so.1
00289000-002bb000 r-xp 00000000 08:02 232718 /usr/lib/i386-linux-gnu/libfontconfig.so.1.4.4
002bb000-002bc000 r--p 00032000 08:02 232718 /usr/lib/i386-linux-gnu/libfontconfig.so.1.4.4
002bc000-002bd000 rw-p 00033000 08:02 232718 /usr/lib/i386-linux-gnu/libfontconfig.so.1.4.4
002bd000-002d4000 r-xp 00000000 08:02 135548 /lib/i386-linux-gnu/libpthread-2.15.so
002d4000-002d5000 r--p 00016000 08:02 135548 /lib/i386-linux-gnu/libpthread-2.15.so
002d5000-002d6000 rw-p 00017000 08:02 135548 /lib/i386-linux-gnu/libpthread-2.15.so
002d6000-002d8000 rw-p 00000000 00:00 0
002dc000-002fc000 r-xp 00000000 08:02 135531 /lib/i386-linux-gnu/ld-2.15.so
002fc000-002fd000 r--p 0001f000 08:02 135531 /lib/i386-linux-gnu/ld-2.15.so
002fd000-002fe000 rw-p 00020000 08:02 135531 /lib/i386-linux-gnu/ld-2.15.so
002fe000-003d6000 r-xp 00000000 08:02 233567 /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
003d6000-003d7000 ---p 000d8000 08:02 233567 /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
003d7000-003db000 r--p 000d8000 08:02 233567 /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
003db000-003dc000 rw-p 000dc000 08:02 233567 /usr/lib/i386-linux-gnu/libstdc++.so.6.0.16
003dc000-003e3000 rw-p 00000000 00:00 0
003e3000-003fa000 r-xp 00000000 08:02 228832 /usr/lib/i386-linux-gnu/libaudio.so.2.4
003fa000-003fb000 r--p 00016000 08:02 228832 /usr/lib/i386-linux-gnu/libaudio.so.2.4
003fb000-003fc000 rw-p 00017000 08:02 228832 /usr/lib/i386-linux-gnu/libaudio.so.2.4
003fc000-00424000 r-xp 00000000 08:02 135658 /lib/i386-linux-gnu/libpng12.so.0.46.0
00424000-00425000 r--p 00027000 08:02 135658 /lib/i386-linux-gnu/libpng12.so.0.46.0
00425000-00426000 rw-p 00028000 08:02 135658 /lib/i386-linux-gnu/libpng12.so.0.46.0
00426000-0043a000 r-xp 00000000 08:02 135629 /lib/i386-linux-gnu/libz.so.1.2.3.4
0043a000-0043b000 r--p 00013000 08:02 135629 /lib/i386-linux-gnu/libz.so.1.2.3.4
0043b000-0043c000 rw-p 00014000 08:02 135629 /lib/i386-linux-gnu/libz.so.1.2.3.4
0043c000-00489000 r-xp 00000000 08:02 233785 /usr/lib/i386-linux-gnu/libgobject-2.0.so.0.3200.3
00489000-0048a000 r--p 0004c000 08:02 233785 /usr/lib/i386-linux-gnu/libgobject-2.0.so.0.3200.3
0048a000-0048b000 rw-p 0004d000 08:02 233785 /usr/lib/i386-linux-gnu/libgobject-2.0.so.0.3200.3
0048b000-00f35000 r-xp 00000000 08:02 233884 /usr/lib/i386-linux-gnu/libQtGui.so.4.8.1
00f35000-00f57000 r--p 00aa9000 08:02 233884 /usr/lib/i386-linux-gnu/libQtGui.so.4.8.1
00f57000-00f5b000 rw-p 00acb000 08:02 233884 /usr/lib/i386-linux-gnu/libQtGui.so.4.8.1
00f5b000-00f5e000 rw-p 00000000 00:00 0
00f5e000-01232000 r-xp 00000000 08:02 233888 /usr/lib/i386-linux-gnu/libQtCore.so.4.8.1
01232000-01239000 r--p 002d4000 08:02 233888 /usr/lib/i386-linux-gnu/libQtCore.so.4.8.1
01239000-0123a000 rw-p 002db000 08:02 233888 /usr/lib/i386-linux-gnu/libQtCore.so.4.8.1
0123a000-0123b000 rw-p 00000000 00:00 0
01b70000-01b78000 r-xp 00000000 08:02 230178 /usr/lib/i386-linux-gnu/libXrender.so.1.3.0
01b78000-01b79000 r--p 00007000 08:02 230178 /usr/lib/i386-linux-gnu/libXrender.so.1.3.0

happened when first client disconnecting..
client using qchat 0.3 (37)
server using ii qchat 0.3-0ubuntu0~rzr2 a crossplatform LAN chat written using Qt4
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

[Kiswono Prayogo]

qt version on server

ii libqt4-core 4:4.8.1-0ubuntu4.2 transitional package for Qt 4 core non-GUI runtime libraries
ii libqt4-dbus 4:4.8.1-0ubuntu4.2 Qt 4 D-Bus module
ii libqt4-declarative 4:4.8.1-0ubuntu4.2 Qt 4 Declarative module
ii libqt4-designer 4:4.8.1-0ubuntu4.2 Qt 4 designer module
ii libqt4-dev 4:4.8.1-0ubuntu4.2 Qt 4 development files
ii libqt4-gui 4:4.8.1-0ubuntu4.2 transitional package for Qt 4 GUI runtime libraries
ii libqt4-help 4:4.8.1-0ubuntu4.2 Qt 4 help module
rc libqt4-multimedia 4:4.6.2-0ubuntu5.4 Qt 4 Multimedia module
ii libqt4-network 4:4.8.1-0ubuntu4.2 Qt 4 network module
ii libqt4-opengl 4:4.8.1-0ubuntu4.2 Qt 4 OpenGL module
ii libqt4-opengl-dev 4:4.8.1-0ubuntu4.2 Qt 4 OpenGL library development files
ii libqt4-qt3support 4:4.8.1-0ubuntu4.2 Qt 3 compatibility library for Qt 4
ii libqt4-script 4:4.8.1-0ubuntu4.2 Qt 4 script module
ii libqt4-scripttools 4:4.8.1-0ubuntu4.2 Qt 4 script tools module
ii libqt4-sql 4:4.8.1-0ubuntu4.2 Qt 4 SQL module
ii libqt4-sql-mysql 4:4.8.1-0ubuntu4.2 Qt 4 MySQL database driver
ii libqt4-sql-sqlite 4:4.8.1-0ubuntu4.2 Qt 4 SQLite 3 database driver
ii libqt4-svg 4:4.8.1-0ubuntu4.2 Qt 4 SVG module
ii libqt4-test 4:4.8.1-0ubuntu4.2 Qt 4 test module
ii libqt4-xml 4:4.8.1-0ubuntu4.2 Qt 4 XML module
ii libqt4-xmlpatterns 4:4.8.1-0ubuntu4.2 Qt 4 XML patterns module
rc libqtassistantclient4 4.6.3-3ubuntu2 Qt Assistant client library (runtime)
ii libqtcore4 4:4.8.1-0ubuntu4.2 Qt 4 core module
ii libqtgui4 4:4.8.1-0ubuntu4.2 Qt 4 GUI module
rc libqtwebkit4 2.2.1-1ubuntu4 Web content engine library for Qt
ii qt4-linguist-tools 4:4.8.1-0ubuntu4.2 Qt 4 Linguist tools
ii qt4-qmake 4:4.8.1-0ubuntu4.2 Qt 4 qmake Makefile generator tool

qt version on client

ii libqt4-core 4:4.8.1-0ubuntu4.1 transitional package for Qt 4 core non-GUI runtime libraries
ii libqt4-dbg 4:4.8.1-0ubuntu4.1 Qt 4 library debugging symbols
ii libqt4-dbus 4:4.8.1-0ubuntu4.1 Qt 4 D-Bus module
ii libqt4-declarative 4:4.8.1-0ubuntu4.1 Qt 4 Declarative module
ii libqt4-declarative-particles 4:4.8.1-0ubuntu4.1 Qt 4 particles QML plugin
ii libqt4-designer 4:4.8.1-0ubuntu4.1 Qt 4 designer module
ii libqt4-dev 4:4.8.1-0ubuntu4.1 Qt 4 development files
ii libqt4-gui 4:4.8.1-0ubuntu4.1 transitional package for Qt 4 GUI runtime libraries
ii libqt4-help 4:4.8.1-0ubuntu4.1 Qt 4 help module
ii libqt4-network 4:4.8.1-0ubuntu4.1 Qt 4 network module
ii libqt4-opengl 4:4.8.1-0ubuntu4.1 Qt 4 OpenGL module
ii libqt4-opengl-dev 4:4.8.1-0ubuntu4.1 Qt 4 OpenGL library development files
ii libqt4-qt3support 4:4.8.1-0ubuntu4.1 Qt 3 compatibility library for Qt 4
ii libqt4-script 4:4.8.1-0ubuntu4.1 Qt 4 script module
ii libqt4-scripttools 4:4.8.1-0ubuntu4.1 Qt 4 script tools module
ii libqt4-sql 4:4.8.1-0ubuntu4.1 Qt 4 SQL module
ii libqt4-sql-mysql 4:4.8.1-0ubuntu4.1 Qt 4 MySQL database driver
ii libqt4-sql-psql 4:4.8.1-0ubuntu4.1 Qt 4 PostgreSQL database driver
ii libqt4-sql-sqlite 4:4.8.1-0ubuntu4.1 Qt 4 SQLite 3 database driver
ii libqt4-svg 4:4.8.1-0ubuntu4.1 Qt 4 SVG module
ii libqt4-test 4:4.8.1-0ubuntu4.1 Qt 4 test module
ii libqt4-xml 4:4.8.1-0ubuntu4.1 Qt 4 XML module
ii libqt4-xmlpatterns 4:4.8.1-0ubuntu4.1 Qt 4 XML patterns module
ii libqt4pas-dev 2.5-1 Development files for Qt4Pas
ii libqt4pas5 2.5-1 Qt4 interface bindings for Pascal
ii libqwt5-qt4 5.2.2-1ubuntu2 Qt4 widgets library for technical applications (runtime)
ii python-qt4 4.9.1-2ubuntu1 Python bindings for Qt4
ii python-qt4-dbus 4.9.1-2ubuntu1 DBus Support for PyQt4
ii qt4-designer 4:4.8.1-0ubuntu4.1 graphical designer for Qt 4 applications
ii qt4-dev-tools 4:4.8.1-0ubuntu4.1 Qt 4 development tools
ii qt4-doc 4:4.8.1-0ubuntu4.1 Qt 4 API documentation
ii qt4-linguist-tools 4:4.8.1-0ubuntu4.1 Qt 4 Linguist tools
ii qt4-qmake 4:4.8.1-0ubuntu4.1 Qt 4 qmake Makefile generator tool