openlayers/ol3 — pull request #1188 by tschaub (2013-10-29 15:43:44+00:00)
Title: Wrong BBOX in url for getFeatureInfo in ol.source.ImageWMS 

In source/imagewmssource.js
for ol.source.ImageWMS.prototype.getFeatureInfoForPixel
Extent is Wrong, ymin and xmax are inverted.

size = map.getSize(),
bottomLeft = map.getCoordinateFromPixel([0, size[1]]),
topRight = map.getCoordinateFromPixel([size[0], 0]),
extent = [bottomLeft[0], topRight[0], bottomLeft[1], topRight[1]],

Must be:
extent = [bottomLeft[0], bottomLeft[1], topRight[0], topRight[1]],

NB: in tiledwmssource.js extent (relative to tile is correctly compute and set in BBOX url part).