(gdb) catch throw 
Catchpoint 1 (throw) 
(gdb) c 
Continuing. 
Catchpoint 1 (exception thrown), 0x420c5a44 in __cxa_throw () 
from /usr/lib/libstdc++.so.6 
(gdb) bt 
#0 0x420c5a44 in __cxa_throw () from /usr/lib/libstdc++.so.6 
#1 0x000760d4 in ?? () 
#2 0x00076448 in ?? () 
#3 0x00078da0 in ?? () 
#4 0x0004ed28 in ?? () 
#5 0x000830c0 in ?? () 
#6 0x00172b94 in ?? () 
#7 0x41ec7be4 in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4 
#8 0x41edeb88 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 
#9 0x41f47164 in QIODevice::readyRead() () from /usr/lib/libQtCore.so.4 
#10 0x41b91b48 in ?? () from /usr/lib/libQtNetwork.so.4 
#11 0x41b981bc in ?? () from /usr/lib/libQtNetwork.so.4 
#12 0x41b7b030 in ?? () from /usr/lib/libQtNetwork.so.4 
#13 0x41b7c3c4 in ?? () from /usr/lib/libQtNetwork.so.4 
#14 0x410d9198 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () 
---Type <return> to continue, or q <return> to quit--- 
from /usr/lib/libQtGui.so.4 
#15 0x410db8fc in QApplication::notify(QObject*, QEvent*) () 
from /usr/lib/libQtGui.so.4 
#16 0x001e1700 in ?? () 
#17 0x001e1700 in ?? () 
Backtrace stopped: previous frame identical to this frame (corrupt stack?) 
(gdb) c 
Continuing. 

Program received signal SIGABRT, Aborted. 
0x421a6548 in raise () from /lib/libc.so.6 
(gdb)