http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3119 in Safari 8 in the iOS Simulator of XCode 6 beta 5 shows 'svg' for the first img, and 'image' for the second img.
If sizes support is turned on, expected result is 'image' for the first img and 'svg' for the second img.
If sizes is turned off, yoav says expected result is no image ('w' candidates should be dropped on the floor).
Instead it seems all candidates are interpreted as 1x, so the first one in srcset gets chosen.
Created attachment 236587 [details]
Comment on attachment 236587 [details]
Clearing flags on attachment: 236587
Committed r172600: <http://trac.webkit.org/changeset/172600>
All reviewed patches have been landed. Closing bug.