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Re: Strange Warning Message from the Analyzer?
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Re: Strange Warning Message from the Analyzer?


  • Subject: Re: Strange Warning Message from the Analyzer?
  • From: Jens Alfke <email@hidden>
  • Date: Tue, 09 Jun 2015 10:30:03 -0700

> On Jun 9, 2015, at 9:51 AM, Quincey Morris <email@hidden> wrote:
>
> I might be misremembering, but I think this has come up before, and one other way is that malloc is allowed to return NULL if the requested size is 0. (Whether or not it does so is standard-library-implementation-dependent.)

I think I remember that coming up recently. In Darwin, malloc(0) does return a non-NULL pointer. As far as I know it’s a valid heap block that just happens to occupy 0 bytes.

—Jens
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References: 
 >Strange Warning Message from the Analyzer? (From: Dave <email@hidden>)
 >Re: Strange Warning Message from the Analyzer? (From: Steve Mills <email@hidden>)
 >Re: Strange Warning Message from the Analyzer? (From: Dave <email@hidden>)
 >Re: Strange Warning Message from the Analyzer? (From: Quincey Morris <email@hidden>)

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