Re: EXC_BAD_ACCESS in NSData
Re: EXC_BAD_ACCESS in NSData
- Subject: Re: EXC_BAD_ACCESS in NSData
- From: Pax <email@hidden>
- Date: Mon, 26 May 2014 15:43:56 +0100
Just to answer my own question, I find that:
bytes=[[datastream subdataWithRange:NSMakeRange(positionCounter, datasize)]bytes];
Works perfectly.
I should, I know, find out what was going wrong initially - but since I'd rather not have a copy anyway, this really is the all-round better solution.
On 26 May 2014, at 15:25, Sandy McGuffog <email@hidden> wrote:
> Well,
>
> I find your code to be a bit confusing, but I’d say that both of those are wrong. I think that what you need is:
>
> unsigned char* databuffer = (unsigned char*)malloc(datasize);
> [datastream getBytes:databuffer range:NSMakeRange(positionCounter, datasize)]; // Packet content
>
>
> On May 26, 2014, at 3:44 PM, Pax <email@hidden> wrote:
>
>> Apologies - the obvious important detail, and I missed it out entirely. I have tried both of the following with the same result:
>>
>> unsigned char* databuffer = (unsigned char*)malloc(datasize);
>> [datastream getBytes:&databuffer range:NSMakeRange(positionCounter, datasize)]; // Packet content
>>
>> and
>>
>> unsigned char* bytes;
>> [datastream getBytes:&bytes range:NSMakeRange(positionCounter, datasize)]; // Packet content
>>
>> Either way, I get the same result.
>>
>>
>>
>> On 26 May 2014, at 14:16, Uli Kusterer <email@hidden> wrote:
>>
>>> On 26 May 2014, at 06:02, Pax <email@hidden> wrote:
>>>> This is my snippet of code:
>>>> [datastream getBytes:&bytes range:NSMakeRange(positionCounter, datasize)]; // Length of packet content
>>>> positionCounter+= datasize;
>>>
>>> What is bytes declared as, and what do you initialize it to?
>>>
>>> Cheers,
>>> -- Uli Kusterer
>>> “The Witnesses of TeachText are everywhere...”
>>> http://zathras.de
>>>
>>
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