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POEXC_BAD_ACCESS when setting synthesized (retained) property to nil
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  1. POEXC_BAD_ACCESS when setting synthesized (retained) property to nil
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    copied!<p>I get a bad access (objc_msgsend) when calling this line of code:</p> <pre><code>self.currentGameTeam = nil; </code></pre> <p>Where "currentGameTeam" is defined in the interface for a class called "MCState" as:</p> <pre><code>MNAvailableTeamContext *currentGameTeam; </code></pre> <p>And I synthesize a property for it:</p> <pre><code>@property (retain) MNAvailableTeamContext *currentGameTeam; </code></pre> <p>After setting NSZombieEnabled the console shows:</p> <pre><code>*** -[MNAvailableTeamContext release]: message sent to deallocated instance 0x5b3eba0 </code></pre> <p>And the debugger trace shows that it comes from within the synthesized setter code:</p> <pre><code>#3 0x0001fa96 in -[MCState setCurrentGameTeam:] at MCState.m:44 </code></pre> <p>I've looked at several other questions and threads and I can't find an answer that applies to my case. I don't understand why there would be a bad access if I've synthesized the property and I'm setting it to nil. What is especially odd is that there are at least 3 other properties in MCState which are defined and used in the exact same way as currentGameTeam, with the only difference being that they are different types:</p> <pre><code>MNUserContext *storedUser; MNActiveGameContext *storedGame; MNAvailableUserContext *storedGameUser; MNAvailableTeamContext *storedGameTeam; </code></pre> <p>and</p> <pre><code>@property (retain) MNUserContext *currentUser; @property (retain) MNActiveGameContext *currentGame; @property (retain) MNAvailableUserContext *currentGameUser; @property (retain) MNAvailableTeamContext *currentGameTeam; </code></pre> <p>and</p> <pre><code>@synthesize currentUser; @synthesize currentGame; @synthesize currentGameUser; @synthesize currentGameTeam; </code></pre> <p>finally</p> <pre><code>self.currentUser = userContext; self.currentGame = nil; self.currentGameUser = nil; self.currentGameTeam = nil; // Error occurs here </code></pre> <p>The rest of these all act normally - only currentGameTeam gives me trouble. Any ideas?</p>
 

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