Core Data Memory Leak

hi,

fetching data core data , putting array using following code:

code:

/*       fetch existing events.       create fetch request; find event entity , assign request; add sort descriptor; execute fetch.       */      marblebeingdragged=yes;  	nsfetchrequest *request = [[nsfetchrequest alloc] init];  	nsentitydescription *entity = [nsentitydescription entityforname:@"child" inmanagedobjectcontext:_managedobjectcontext];  	[request setentity:entity];  	  	// order events creation date, recent first.  	nssortdescriptor *namedescriptor = [[nssortdescriptor alloc] initwithkey:@"name" ascending:no];      nssortdescriptor *prizedescriptor = [[nssortdescriptor alloc] initwithkey:@"prize" ascending:no];      nssortdescriptor *neededdescriptor = [[nssortdescriptor alloc] initwithkey:@"marblesneeded" ascending:no];      nssortdescriptor *colordescriptor = [[nssortdescriptor alloc] initwithkey:@"color" ascending:no];      nssortdescriptor *reacheddiscriptor = [[nssortdescriptor alloc] initwithkey:@"prizereached" ascending:no];        	nsarray *sortdescriptors = [[nsarray alloc] initwithobjects:namedescriptor,prizedescriptor,neededdescriptor,colordescriptor, nil];  	[request setsortdescriptors:sortdescriptors];  	[namedescriptor release];      [colordescriptor release];      [prizedescriptor release];      [neededdescriptor release];      [reacheddiscriptor release];  	[sortdescriptors release];  	  	// execute fetch -- create copy of result.  	nserror *error = nil;      records = [[self.managedobjectcontext executefetchrequest:request error:&error] retain];            [request release];  

however, when using code however, instruments shows memory leaks associated

code:

 records = [[self.managedobjectcontext executefetchrequest:request error:&error] retain];

if release records after release request, app crashes records called throughout view controller. when , should release records? should use autorelease? if so, how?

 

arc?

nothing seems wrong me. warning go away if enable arc? if not, there more fundamental @ play; if so, it's fixed.

reminds me little bit of diagram on colleague's wall:

universal engineering checklist - answer these 2 questions: move? should it?

• yes , yes: nothing
• no , no: nothing
• yes , no: duct tape
• no , yes: wd-40

​

 

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