gdalwarp -te 0 -5 5 0 -tr 1 1 latlong.tif bug.tif does not set geolocation

[dem]

Hi,

I have found a special hidden bug when trying to create a latlon GeoTIFF starting at (0, 0) and with a pixel size of (1, -1). A gdalinfo on the resulting file does not report any geotransform and then use the default (0,1,0,0,0,1), which is almost the good one except that pixelYSize should be -1. A listgeo reports: "Corner Coordinates:

... unable to transform points between pixel/line and PCS space"

If I try with another origin (1, 1) or pixel size (0.5, 0.5) it works...

Tested using FWTools 1.3.2

Julien