id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
1722,[PATCH] Fix GeoTIFF detection of already computed overview levels,rouault,warmerdam,"Use case :
0) I have a GTiff 121x121 Int16.
1) gdaladdo -r average test.tiff 2 4 8 16
2) gdaladdo -r average test.tiff 2 4 8 16. Yeah, this is stupid...
3) gdaladdo -r average test.tiff 2 4 8 16. Segfault

Currently, the 1/16 overview is wrongly detected as 1/15 when doing 2). This lead to segfault when doing 3).

The following patch simulates the new X size of the requested overview and compares it with the X size of the existing overviews, instead of comparing the reduction ratios.",defect,closed,normal,1.4.3,GDAL_Raster,1.4.2,normal,fixed,geotiff overviews,