CFArrayBSearchValues callback functions reversed in lion

Originator:loghound
Number:rdar://9809774 Date Originated:7/20/2011
Status:open Resolved:
Product:Mac OSX Product Version:10.7 "Lion"
Classification: Reproducible:
 
Summary:
The callback function of the CFArrayBSearchValues has the arguments reversed from Snow Leopard -- See the the attached project but in summary from my example Snow leopard is passing them back this way
** Edit ** Actually in Lion the values passed can change order from callback to callback

2011-07-20 13:00:22.646 cfbinarysearch[1886:a0f] val1 class: NSCFString, val2 class NSCFDictionary

while Lion passes them back reversed
7/20/11 1:06:45.737 PM cfbinarysearch: val1 class: __NSCFDictionary, val2 class __NSCFConstantString

This is 100% reproducible (see attached sample project)

Steps to Reproduce:

Make  CFArrayBinarySearch and run it in both and observe said reversal

Expected Results:

I expect consistent behaviour -- the docs actually aren't clear on the values passed but they should, I think, be the same (it's not obvious why they should change!?!)


Actual Results:

They are reversed

Regression:
See attached -- run it in both SL and Lion to enjoy the differences

Notes:

Comments

I'm not sure why you think this is a bug. A comparator takes two objects and compares them. It can't require the callers to pass the arguments in a certain order. Which one is bigger and which one is smaller can not be influenced by order. If A > B is true, then B < A must be true.

By honus87 at July 22, 2011, 5:13 a.m. (reply...)

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