On Mon, Aug 18, 2014 at 1:32 PM, Claude Pache <[email protected]> wrote:
> > Le 18 août 2014 à 12:59, Till Schneidereit <[email protected]> a > écrit : > > > > > Note also that, by my reading of the spec at least, all implementations > currently fully adhere to the spec: they "[p]erform an > implementation-dependent sequence of calls to the [[Get]] and [[Set]] > internal methods of obj, to the DeletePropertyOrThrow abstract operation > with obj as the first argument, and to SortCompare". My reading of this is > that "implementation-denendent sequence" refers to all four mentioned > functions, where an implementation might either intermix all of them (like > v8/JSC do) or first do a (sub-)sequence of only [[Get]] calls and then a > second (sub-)sequence intermixing calls to all the other functions (like > Chakra/SpiderMonkey). > > > > Nit: As currently specced, SortCompare includes obligatory calls to > [[HasProperty]] and [[Get]] on some keys before invoking the comparison > function: so, SpiderMonkey/Chakra don't adhere to the specs. Even JSC/V8 > don't fully adhere to the spec on this point, because (as I've observed) > they may omit a call to [[HasProperty]]/[[Get]] when the value is known. > But I think it is a spec bug that can be corrected, in order to make all > current implementations compliant (SortCompare should take the values, not > the keys, as arguments). > Oh, you're right. And I agree: SortCompare should take values.
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