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Editorial Team
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Asked: 2026-05-27T02:48:17+00:00

I’m trying to make app with xcode 4.2 and i’m really confused whay happen

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I’m trying to make app with xcode 4.2 and i’m really confused whay happen this.
Could someone help me an explain me why have error in lines when appear &error

Passing address of non-local object to __autoreleasing parameter for write-back

RootViewController.h

RootViewController.m

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  1. Editorial Team

    It would have been easier to diagnose the error without having to guess at the line number on which it occurs, but I think the issue is your use of the error instance variable to pass as the error here:

    30    [audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error: &error];

    also here

    49    [fm removeItemAtPath:[recordedTmpFile path] error:&error];

    The reason is that, if an error occcurs, in setCategory:error: the existing value of error will be overwritten without being released and is thus a potential leak.

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