Re: Strange Analyser Warning/Error
Re: Strange Analyser Warning/Error
- Subject: Re: Strange Analyser Warning/Error
- From: Jens Alfke <email@hidden>
- Date: Mon, 08 Feb 2016 08:28:17 -0800
> On Feb 8, 2016, at 8:09 AM, Steve Sisak <email@hidden> wrote:
>
> The nil key pointer is a red herring. -[NSDictionary objectForKey:] can return nil if the dictionary doesn’t contain a value for the key.
>
> The analyser is correctly flagging that the code doesn’t handle this case.
No, it isn’t, because that case doesn’t occur here. The value returned from -objectForKey (myUserInfo) is never used as a method parameter in that code snippet. I think you’re mixing it up with theUserInfo.
I’ve been getting an increasing number of apparently nonsensical analyzer warnings (mostly in C++ code) in the past year or so (since Xcode 6?). They tend to be very complex, with up to a dozen steps going through multiple functions, but end up warning about something useless or impossible.
Anyway, analyzer issues should be discussed on xcode-users…
—Jens
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