math-partial-sums.js spends all its time looking up the Math object At least I think that's the object it's looking up. It sure is beating the darn global variable hash to death, regardless. Maciej suggested that making Math and the global constructor objects ReadOnly and DontDelete like Mozilla has should help a lot. This bug is requesting that we do just that. :)
We did just that. :-) We actually need undo that for spec compliance at some point; but that's tangential, the problem this bug is tracking ("math-partial-sums.js spends all its time looking up the Math object") is not longer true.
I love that you're finally resolving all these ancient JSC bugs of mine. :)