Bug report #10482

QGIS master crashes when loading composer template

Added by Akbar Gumbira about 10 years ago. Updated almost 10 years ago.

Assignee:Nyall Dawson
Category:Map Composer/Printing
Affected QGIS version:master Regression?:No
Operating System:Linux Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:18894


On Master (8c513f9), when we try to load the template on attachment using this snippet below, QGIS will crash.

from PyQt4 import QtCore, QtXml

canvas = iface.mapCanvas() 
renderer = canvas.mapRenderer() 
composition = QgsComposition(renderer)

composer = iface.createNewComposer() 

template_file = QtCore.QFile('/tmp/basic.qpt') 
template_file.open(QtCore.QIODevice.ReadOnly | QtCore.QIODevice.Text) 
template_content = template_file.readAll() 

document = QtXml.QDomDocument() 
status_load = composition.loadFromTemplate(document)

Here is the backtrace of QGIS:

#2  0x000000000055f9b5 in qgisCrash (signal=-1) at /home/gumbia/dev/cpp/QGIS/src/app/main.cpp:303
#3  0x000000000055fb8c in myMessageOutput (type=QtFatalMsg, msg=0x7f1ff28 "ASSERT failure in QVector<T>::operator[]: \\"index out of range\\", file /usr/include/qt4/QtCore/qvector.h, line 355")
    at /home/gumbia/dev/cpp/QGIS/src/app/main.cpp:356
#4  0x00007ffff34f93d0 in qt_message_output(QtMsgType, char const*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007ffff34f9838 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007ffff34f99c4 in qFatal(char const*, ...) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00000000005c5a07 in QVector<QgsFields::Field>::operator[] (this=0x68811d8, i=4) at /usr/include/qt4/QtCore/qvector.h:355
#8  0x00000000005accb8 in QgsFields::operator[] (this=0x68811d8, i=4) at /home/gumbia/dev/cpp/QGIS/src/app/../core/qgsfield.h:207
#9  0x00007ffff4bbfaaf in QgsComposerAttributeTable::setDisplayAttributes (this=0x7f197b0, attr=..., refresh=false) at /home/gumbia/dev/cpp/QGIS/src/core/composer/qgscomposerattributetable.cpp:279
#10 0x00007ffff4bc1eda in QgsComposerAttributeTable::readXML (this=0x7f197b0, itemElem=..., doc=...) at /home/gumbia/dev/cpp/QGIS/src/core/composer/qgscomposerattributetable.cpp:656
#11 0x00007ffff4bfd64d in QgsComposition::addItemsFromXML (this=0x8c79040, elem=..., doc=..., mapsToRestore=0x0, addUndoCommands=false, pos=0x0, pasteInPlace=false) at /home/gumbia/dev/cpp/QGIS/src/core/composer/qgscomposition.cpp:1103
#12 0x00007ffff4bfaa5f in QgsComposition::loadFromTemplate (this=0x8c79040, doc=..., substitutionMap=0x0, addUndoCommands=false) at /home/gumbia/dev/cpp/QGIS/src/core/composer/qgscomposition.cpp:803
#13 0x00007fff86187f2c in meth_QgsComposition_loadFromTemplate (sipSelf=0x6652560, sipArgs=0x5ad8850, sipKwds=0x0) at /home/gumbia/dev/cpp/QGIS/build/python/core/sip_corepart2.cpp:18504

It is OK in QGIS 2.2

basic.qpt (5.7 KB) Akbar Gumbira, 2014-06-06 12:22 AM

Associated revisions

Revision a5c0e7ed
Added by Nyall Dawson about 10 years ago

[composer] Check if attribute index is valid when reading attribute table fields from pre 2.4 projects (refs #10482)


#1 Updated by Tim Sutton about 10 years ago

  • Assignee changed from Tim Sutton to Nyall Dawson

#2 Updated by Giovanni Manghi about 10 years ago

  • Priority changed from Normal to Severe/Regression
  • Target version set to Version 2.4
  • Affected QGIS version changed from 2.2.0 to master

#3 Updated by Nyall Dawson about 10 years ago

I can't reproduce this, but I've pushed a potential fix. Can you please test and confirm? Thanks!

#4 Updated by Nyall Dawson about 10 years ago

  • Status changed from Open to Feedback

#5 Updated by Akbar Gumbira about 10 years ago

Hi, I just tested against 6a17538 (as of today), it is fixed now. Sorry that I forgot to tell that this issue will raise if the legend contains layer that has different CRS with other layers..

#6 Updated by Akbar Gumbira about 10 years ago

  • Status changed from Feedback to Closed

#7 Updated by Amandine Sahl almost 10 years ago

  • Status changed from Closed to Reopened
  • Target version deleted (Version 2.4)

I have the same problem.
The command composer.setComposition(composition) work with python script. But the same code inside a plugin make Qgis Crash.
I work with Qgis 2.4

#8 Updated by Nyall Dawson almost 10 years ago

  • Status changed from Reopened to Closed

Amandine - that's unlikely to be the same bug. Please open a new ticket and include a full python script which demonstrates this so that I can track it down.

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