Re: EXC_BAD_ACCESS in NSData
Re: EXC_BAD_ACCESS in NSData
- Subject: Re: EXC_BAD_ACCESS in NSData
- From: Roland King <email@hidden>
- Date: Mon, 26 May 2014 22:54:03 +0800
So you have
unsigned char *bytes;
and then
datasize = (unsigned int)bytes;
which sets datasize to the address of bytes cast to an unsigned integer which has nothing to do with the data in bytes at all and in some cases just truncates the address (OSX for instance)
datasize = *((unsigned int*)bytes);
is a bit closer to what you might want but is endian-unaware.
On 26 May, 2014, at 9:44 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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