Dear all, I am creating an XML chars to transmit over TCP. When an XML is created, I attempt to release some resources. However, I got some weird results.
The XML is simple as follows. <?xml version="1.0" encoding="UTF-8"?> <MessageRoot> <PeerKey>2412432</PeerKey> <PeerName>greatfree</PeerName> <Password>111111</Password> </MessageRoot> The code to create the above XML is as follows. It runs well. + (const char *) CreateSignInMessage: (NSString *)peerKey PN: (NSString *)peerName PW:(NSString *)password { NSXMLElement *root = [NSXMLNode elementWithName:"MessageRoot"]; NSXMLDocument *xmlDoc = [[NSXMLDocument alloc] initWithRootElement:root]; [xmlDoc setVersion:"1.0"]; [xmlDoc setCharacterEncoding:"utf-8"]; NSXMLElement *peerKeyElement = [NSXMLNode elementWithName:"PeerKey"]; [root addChild:peerKeyElement]; [peerKeyElement addChild:[NSXMLNode textWithStringValue:peerKey]]; NSXMLElement *peerNameElement = [NSXMLNode elementWithName:"PeerName"]; [root addChild:peerNameElement]; [peerNameElement addChild:[NSXMLNode textWithStringValue:peerName]]; NSXMLElement *passwordElement = [NSXMLNode elementWithName:"Password"]; [root addChild:passwordElement]; [passwordElement addChild:[NSXMLNode textWithStringValue:password]]; NSData *data = [xmlDoc XMLDataWithOptions:NSXMLNodePrettyPrint]; NSString *xmlStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; const char *xmlChar = [xmlStr UTF8String]; [passwordElement release]; // [peerNameElement release]; // [peerKeyElement release]; [root release]; [xmlDoc release]; [xmlStr release]; [data release]; return xmlChar; } But, if the releasing lines are changed as follows, it gets exceptions. .... [passwordElement release]; [peerNameElement releases]; // The line is added. [root release]; [xmlDoc release]; [xmlStr release]; [data release]; .... Could you please figure out what is the problem? Best regards, Bing _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com