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Re: NSData dataWithBytes problem on Intel

Subject: Re: NSData dataWithBytes problem on Intel
From: Scott Stevenson <email@hidden>
Date: Tue, 20 Mar 2007 20:08:05 -0700
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On Mar 20, 2007, at 6:04 PM, Sam Waters wrote:

I've found that if I do this:
NSData * dTempData = [NSData dataWithBytes:pBytes length:iLen];
and later on do this:
NSData * dTempData2 = [NSData dataWithBytes:pOtherBytes length:iOtherLen];

then everything is fine for both Intel and PPC, but am worried I'm doing something fundamentally wrong. PLEASE let me know if I'm doing something terribly wrong here, I'm new at this!

I think the bug is probably outside of the code you're showing us because there's no way for NSData to know which variable you're assigning object pointer to.

Try something like this:

NSData * dTempData = [NSData dataWithBytes:pBytes length:iLen];
pOtherBytes = pBytes;
iOtherLen = iLen;
dTempData = [NSData dataWithBytes:pOtherBytes length:iOtherLen];

If that works, then it's probably a problem with the way either pOtherBytes or iOtherLen is being set up. On the other hand, if it still crashes, then it might have something to do with the way dTempData is being used after the second assignment.

As for why you see problems on Intel and not PowerPC, it's hard to say without knowing seeing the context of the rest of the code.

    - Scott
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