[QGIS-trac] [Quantum GIS] #1742: After two consecutive zooming, QGIS freezes

[Quantum GIS]

#1742: After two consecutive zooming, QGIS freezes
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   Reporter:  trapanator                                 |              Owner:  nobody
       Type:  bug                                        |             Status:  new   
   Priority:  critical: causes crash or data corruption  |          Milestone:        
  Component:  Vectors                                    |            Version:  HEAD  
   Keywords:                                             |   Platform_version:        
   Platform:  Windows                                    |           Must_fix:  No    
Status_info:  0                                          |  
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 Hi, I discovered a problem with QGIS (1.0.2 and 1.1). It's slow when
 zooming big vector layers (either in SHP and Postgis format).

 Reproduce it with:

 1) zoom in to a small region
 2) zoom in another time

 as you can see, QGIS is going to use 100% CPU and remains stuck.

 I've attached the shapefile in this URL, so you can test this:

 [http://webapps.comune.trento.it/base/zone.7z]

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/1742>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats