Re: More 10.1 backward compatibility

FROM : Philip George
DATE : Mon Dec 16 20:06:52 2002

What happens when you compile on 10.1?

- Philip



On Monday, December 16, 2002, at 08:40  PM, Drew McCormack wrote:

> As much as everyone is probably sick to death of this topic, I still
> haven't found a satisfactory answer in the archives, so I will ask
> anyway.
>
> My program, compiled on 10.2 with gcc3.1, crashes without any warning
> on 10.1, and leaves nothing behind in terms of logs etc. I think I
> know which section of code is at fault: I recently made changes there
> which broke the backward-compatibility. I want to keep the changes, so
> going back to the old code is not an option.
>
> I have setup the availability macros described in Apple's doc to
> compile for 10.1, and determined that there are no methods  being
> called that were not supported in 10.1.
>
> I have checked the code to see if there are any "extern" variables
> from the frameworks, but cannot see any.
>
> Someone mentioned in the archives that "Class" objects could cause
> problems, but I don't really understand this. Is this true, and if so,
> in what circumstances? My code makes use of NSStringFromClass,
> NSClassFromString, and also "Class" objects. Could this be the
> problem, and if so, why?
>
> Drew McCormack
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