Releasing objects causes BAD_ACCESS
-
Dear all,
according to the document
http://developer.apple.com/documentation/Cocoa/Conceptual/URLLoadingSystem/
Tasks/UsingNSURLConnection.html
the connection object as well as the receivedData object are released
in the connectionDidFinishLoading delegate. However, while debugging,
I receive an BAD_ACCESS violation doing the release. Can anyone please
give me some insight on why this is happening? Is there any strategy/
debugging tool that helps me to find objects that should have been
released or should I just rely on GC?
Thanks so much
Best regards
Meik -
On Mon, Jul 7, 2008 at 10:38 PM, Meik Schuetz <cocoa...> wrote:
> Dear all,
>
> according to the document
>
> http://developer.apple.com/documentation/Cocoa/Conceptual/URLLoadingSystem/
Tasks/UsingNSURLConnection.html
>
> the connection object as well as the receivedData object are released in the
> connectionDidFinishLoading delegate. However, while debugging, I receive an
> BAD_ACCESS violation doing the release. Can anyone please give me some
> insight on why this is happening? Is there any strategy/ debugging tool that
> helps me to find objects that should have been released or should I just
> rely on GC?
>
NSZombieEnabled is a good start -
http://developer.apple.com/technotes/tn2004/tn2124.html#SECFOUNDATION -
On Jul 7, 2008, at 3:44 PM, Jonathan del Strother wrote:
> On Mon, Jul 7, 2008 at 10:38 PM, Meik Schuetz <cocoa...>
> wrote:
>> according to the document
>>
>> http://developer.apple.com/documentation/Cocoa/Conceptual/URLLoadingSystem/
Tasks/UsingNSURLConnection.html
>>
>> the connection object as well as the receivedData object are
>> released in the
>> connectionDidFinishLoading delegate. However, while debugging, I
>> receive an
>> BAD_ACCESS violation doing the release. Can anyone please give me
>> some
>> insight on why this is happening? Is there any strategy/ debugging
>> tool that
>> helps me to find objects that should have been released or should I
>> just
>> rely on GC?
>
> NSZombieEnabled is a good start -
> http://developer.apple.com/technotes/tn2004/tn2124.html#SECFOUNDATION
See also "Technical Note TN2124 - Mac OS X Debugging Magic":
<http://developer.apple.com/technotes/tn2004/tn2124.html> -
On Jul 7, 2008, at 3:49 PM, Randall Meadows wrote:
>> NSZombieEnabled is a good start -
>> http://developer.apple.com/technotes/tn2004/tn2124.html#SECFOUNDATION
>
> See also "Technical Note TN2124 - Mac OS X Debugging Magic":
> <http://developer.apple.com/technotes/tn2004/tn2124.html>
Heh, which now I see was the aforementioned link...I just saw the
tn2004 and didn't read the URL further. -
> the connection object as well as the receivedData object are released
> in the connectionDidFinishLoading delegate
The sample also retains receivedData after creating the connection. Did you
do that? And did you create the connection using alloc initxxx?
--
Scott Ribe
<scott_ribe...>
http://www.killerbytes.com/
(303) 722-0567 voice
