always crashes after pressing the right mouse button in GRASS Edit, with most tools

[tutey@…]

1. add a GRASS vector

2. open it in GRASS Edit

3. select one of the tools:

Move vertex
Add vertex
Delete vertex
Move element
Split line
Delete element

3. press right mouse button on the canvas - segfault:

QgsGrassEdit::setCanvasPropmt
mProjectionEnabled = 0
error_routine (fatal = 1): Vect_read_line(): line '0' is not reasonable (max line in map: 1281)

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1242368320 (LWP 8392)]
0xb53cf0fe in V2_read_line_nat ()
   from /usr/local/grass-6.3.cvs/lib/libgrass_vect.so
(gdb) bt
#0  0xb53cf0fe in V2_read_line_nat ()
   from /usr/local/grass-6.3.cvs/lib/libgrass_vect.so
#1  0xb53cec12 in Vect_read_line ()
   from /usr/local/grass-6.3.cvs/lib/libgrass_vect.so
#2  0xb4dc9e3b in QgsGrassProvider::readLine ()
   from /usr/local/qgis08/lib/libqgisgrass.so.1
#3  0xb4e346da in QgsGrassEdit::displayElement ()
   from /usr/local/qgis08/lib/qgis/grassplugin.so
#4  0xb4e4922a in QgsGrassEditMoveVertex::mouseClick ()
   from /usr/local/qgis08/lib/qgis/grassplugin.so
#5  0xb4e47d82 in QgsGrassEditTool::canvasPressEvent ()
   from /usr/local/qgis08/lib/qgis/grassplugin.so
#6  0xb6845d89 in QgsMapCanvas::contentsMousePressEvent ()
   from /usr/local/qgis08/lib/libqgis_gui.so.1
#7  0xb7b29e0b in Q3ScrollView::viewportMousePressEvent (this=0x81d71e8,
    e=0xbff3d98c) at widgets/q3scrollview.cpp:1721
#8  0xb7b2a7d9 in Q3ScrollView::eventFilter (this=0x81d71e8, obj=0x81e7b80,
    e=0xbff3d98c) at widgets/q3scrollview.cpp:1471
#9  0xb73ec731 in QApplicationPrivate::notify_helper (this=0x80661a8,
    receiver=0x81e7b80, e=0xbff3d98c) at kernel/qapplication.cpp:3426
#10 0xb73efecc in QApplication::notify (this=0xbff3e088, receiver=0x81e7b80,
    e=0xbff3d98c) at kernel/qapplication.cpp:3133
#11 0xb7449bcf in QETWidget::translateMouseEvent (this=0x81e7b80,
    event=0xbff3dc8c) at qcoreapplication.h:186
#12 0xb74494c2 in QApplication::x11ProcessEvent (this=0xbff3e088,
    event=0xbff3dc8c) at kernel/qapplication_x11.cpp:2764
#13 0xb746ce72 in x11EventSourceDispatch (s=0x8086450, callback=0,
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:122
#14 0xb64458d6 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#15 0xb6448996 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#16 0xb6448e1e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#17 0xb7ddd4ba in QEventDispatcherGlib::processEvents (this=0x8084b90,
    flags=@0xbff3de98) at kernel/qeventdispatcher_glib.cpp:363
#18 0xb746cb9b in QGuiEventDispatcherGlib::processEvents (this=0x8084b90,
    flags=@0x8500e1a) at kernel/qguieventdispatcher_glib.cpp:178
#19 0xb7db80bd in QEventLoop::processEvents (this=0x8518668, flags=@0x8518668)
    at kernel/qeventloop.cpp:126
#20 0xb7db8238 in QEventLoop::exec (this=0xbff3df40, flags=@0xbff3df48)
    at kernel/qeventloop.cpp:172
#21 0xb7dbaadd in QCoreApplication::exec () at kernel/qcoreapplication.cpp:727
#22 0xb73ec269 in QApplication::exec () at kernel/qapplication.cpp:2927
#23 0x0804bf2f in main ()

BTW: I suggest that the right mouse button always de-selects the active tool. Currently, when "New point" or "New controid" tool is used, right-click acts same as the left-click (digitises a new feature). Also, when the GRASS Edit starts, no tool should be active - currently "New point" is always active at a start.

Maciek

[tutey@…]

P.S.

Using 0.8 SVN 6453.

[timlinux]

Moved to milestone 0.8.2 since we wont be fixing any further issues before the 0.8.1 release

[lubaby]

I can't reproduce it with 0.8.1 (latest svn Release_0_8_0 branch). Right button does nothing. No crash, no error message.

[msieczka]

Replying to lubaby:

I can't reproduce it with 0.8.1 (latest svn Release_0_8_0 branch). Right button does nothing. No crash, no error message.

I confirm. The crash is gone. I'll close the ticket. If the problem returns I'll re-open it. Thanks for the heads-up!

However the defect that right click digitizes point or centroid is still valid. I'll submit it in a separate ticket.

[msieczka]

The bug is back. No segfault, but QGIS 0.8.2 svn 7045 crashes when I do the following:

1. add the any GRASS vector (eg. "archsites" from spearfish60 dataset [1])

2. open it in GRASS Edit

3. select one of the tools:

Move vertex Add vertex Delete vertex Move element Split line Delete element

3. press right mouse button on the canvas - crash, no segfault:

$ gdb /usr/local/qgis08/bin/qgis

(gdb) run
Starting program: /usr/local/qgis08/bin/qgis
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1259514176 (LWP 30022)]
warning: Lowest section in /usr/lib/libicudata.so.34 is .hash at 00000094
[New Thread -1262711888 (LWP 30221)]
[New Thread -1271501904 (LWP 30224)]
[Thread -1271501904 (LWP 30224) exited]
[New Thread -1279894608 (LWP 30225)]
[Thread -1279894608 (LWP 30225) exited]
QgsGrass::vectors()
Warning: QgsSpatialRefSys::createFromSrsId failed :  select srs_id,description,projection_acronym,ellipsoid_acronym,parameters,srid,epsg,is_geo from tbl_srs where srs_id='0'
Warning: QPainter::begin: Painter already active
Warning: QPainter::begin: Painter already active
mProjectionEnabled = 0
QgsGrassEdit::setCanvasPropmt
mProjectionEnabled = 0
QgsGrassEdit::setCanvasPropmt
mProjectionEnabled = 0
error_routine (fatal = 1): Vect_read_line(): line '0' is not reasonable (max line in map: 25)

Program exited with code 01.

[1]​http://grass.itc.it/download/data6.php

[wonder]

Fixed in r7343, also with usability suggestions.

[(none)]

Milestone Version 0.8.2 deleted