QGIS » QGIS Application

Sorry for the weird Summary, but this is how I reproduce:

1. start qgis
 1. add grass vector layer
 1. edit grass vector layer
 1. close the grass vector layer editing window (w/out touching anything else)
 1. close the main qgis window, w/out saving

Here's a backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000001 in ?? ()
(gdb) bt
#0  0x0000000000000001 in ?? ()
#3905  0x00007ffff5fbd451 in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/libQtCore.so.4
#3906  0x000000000063e9ff in QObject::disconnect(QObject const*, char const*) ()
#3907  0x00007fffe1b0aef7 in [[QgsGrassEdit]]::closeEdit() ()
   from /usr/local/lib/qgis/plugins/libgrassplugin.so
#3908  0x00007fffe1aeaf95 in [[QgsGrassPlugin]]::~QgsGrassPlugin() ()
   from /usr/local/lib/qgis/plugins/libgrassplugin.so
#3909  0x00007ffff5fb5a5c in QObjectPrivate::deleteChildren() ()
   from /usr/lib/libQtCore.so.4
#3910  0x00007ffff53bd2d5 in QWidget::~QWidget() () from /usr/lib/libQtGui.so.4
#3911  0x000000000053ab6a in [[QgisApp]]::~QgisApp() ()
#3912  0x0000000000533d6f in main ()

Sounds like a missing handling of the grass editor window close button.

Note this is from the 1.7.0 branch, commit 2516c38 (there's no 1.7.0 version in trac)