Created attachment 388439 [details] Stack trace of this crash Visiting http://coastalmap.marine.usgs.gov/ArcIms/Website/usa/eastcoast/atlanticcoast/viewer.htm on sparc, firefox will crash. If jit is disabled, no crash.
Comment on attachment 388440 [details] [diff] [review] patch This is a NPOTB code change. Should be safe to land mozilla-1.9.1 branch. This bug will crash firefox on sparc.
Comment on attachment 388440 [details] [diff] [review] patch Approved for 22.214.171.124. a=NPOTB, aka ss. Please land on mozilla-1.9.1 and use the ".2-fixed" option of the "status1.9.1" flag.