Bug report #13362

Composer: gridlines on worldmap disappear + exceptions in debug when zoomin out of world + segfault

Added by Richard Duivenvoorde over 8 years ago. Updated about 7 years ago.

Category:Map Composer/Printing
Affected QGIS version:2.18.4 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:not reproducable
Crashes QGIS or corrupts data:Yes Copied to github as #:21415


not sure if it is crs related, but to reproduce:

- create a project in epsg:3857 and load either a world shape file or googlemaps layer with QuickServicesPlugin
- create a composer with only one map item
- on this map create a grit in epsg:4326 with interval units 10 map units
- enable the button 'move item content'
- and zoom in or out using the scroll wheel of your mouse, or just move the map around
- and you will see the artifacts you see in the screendump:

1) some lines disappear (and stay away when you do not move the map anymore), see screendump
2) looking in debug messages, you see crs-transformation exceptions, see screendump
3) as soon as you have had this exceptions, and have saved this project and stop qgis you will see a segmentation fault

I'm aware that I'm looking outside of the crs off course (zooming out too much), but I do not think this should lead to exceptions and segfault

composerissue.png (232 KB) Richard Duivenvoorde, 2015-09-15 04:12 AM


#1 Updated by Giovanni Manghi over 8 years ago

  • Target version deleted (Version 2.12)

#2 Updated by Giovanni Manghi about 7 years ago

  • Priority changed from Normal to High

#3 Updated by Giovanni Manghi about 7 years ago

  • Target version set to Version 2.18
  • Affected QGIS version changed from master to 2.18.4
  • Status changed from Open to Feedback

Hi Richard,
I try the provided workflow, can see the missing lines, zoomed/panned like crazy, saved, closed qgis, no crashes. 2.18.4 on Ubuntu 16.04

Changing the affected version to the latest incarnation of the old "master2" branch.

#4 Updated by Richard Duivenvoorde about 7 years ago

Agreed, I do not see this anymore in current 3/master.

As this was already a corner case, let's just close it.

#5 Updated by Richard Duivenvoorde about 7 years ago

  • Status changed from Feedback to Closed

#6 Updated by Giovanni Manghi about 7 years ago

  • Resolution set to not reproducable

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