Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have built QGIS (1.7.4) on Mingw successfully and everythings seems to be alright. My own plugins are also identified and working fine. There is a crash when using identify tool/ attribute table over vector layer. On Raster identify works.

GEOS version : 3.3.8 GDAL version : 1.9.2 Proj4 version : 4.8.0

I have built everything in Debug. When run with gdb ( for identify tool over vector)

Program received signal SIGSEGV, Segmentation fault. 0x70fddf8f in geos::geom::Polygon::computeEnvelopeInternal (this=0x71067038) at Polygon.cpp:249 249 return Envelope::AutoPtr(new Envelope(*(shell->getEnvelopeInternal()))); (gdb)

and for attribute table , it simply crashes away. Please let me know if there are any known issues before I start debugging it.

Thank you.


share|improve this question
Before you start debugging, how about trying QGIS 1.8? – underdark Apr 28 '13 at 6:43
I tried QGIS 1.8, but as I am mingw, I could not compile libspatialindex, hence qgis 1.8 also. So had to go with 1.7.4 which build libspatialindex internally. – Srikanth Apr 28 '13 at 6:58

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.