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Re: malloc was optimized out
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Re: malloc was optimized out


  • Subject: Re: malloc was optimized out
  • From: Dmitry Markman <email@hidden>
  • Date: Mon, 04 Jul 2016 22:13:31 -0400

thanks

unfortunately you started to play with words

I asked for ~250TB of data from my MacBook Pro with 1TB SSD and 16GB of RAM

clearly that amount can’t be given (in any circumstances)

so if compiler returns something that isn’t NULL it’s very troubling

thanks again

dm



> On Jul 4, 2016, at 9:20 PM, Clark Cox <email@hidden> wrote:
>
>
>> On Jul 4, 2016, at 15:53, Dmitry Markman <email@hidden> wrote:
>>
>> Hmm
>>
>> behavior you described is good receipt to un-robust software
>>
>> IMHO, all talks about “effective", “typically" and so on and on is matter of interpretation
>>
>> and are much less important than standard
>
> An implementation of malloc that never returns NULL is still compliant to the standard.
>
>> first of all there is a standard and nothing more. In some cases standard says that behavior is undefined
>>
>> but in case of “malloc" and "operator new” everything is well defined
>
> The standard says that malloc returns NULL in case of failure. It however, says nothing about what constitutes a failure, or *any* situations in which NULL must be returned..
>
>
>
> --
> Clark Smith Cox III
> email@hidden
>

Dmitry Markman


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  • Follow-Ups:
    • Re: malloc was optimized out
      • From: Clark Cox <email@hidden>
    • Re: malloc was optimized out
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References: 
 >malloc was optimized out (From: Dmitry Markman <email@hidden>)
 >Re: malloc was optimized out (From: Clark Cox <email@hidden>)
 >Re: malloc was optimized out (From: Dmitry Markman <email@hidden>)
 >Re: malloc was optimized out (From: Clark Cox <email@hidden>)
 >Re: malloc was optimized out (From: Dmitry Markman <email@hidden>)
 >Re: malloc was optimized out (From: Clark Cox <email@hidden>)

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