EXC_BAD_ACCESS (SIGSEGV)，Help!

[qixin1106]

Device Info

pod 'MQTTClient', '~> 0.15.3'
Xcode Version 12.5 (12E262)
MacOS 11.3 (20E232)

Crash Info

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x000003d290848018
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [11573]

-[MQTTSSLSecurityPolicyEncoder stream:handleEvent:] (in XiaoP) (MQTTSSLSecurityPolicyEncoder.m:58)
-[MQTTDecoder close] (in XiaoP) (MQTTDecoder.m:87)
-[MQTTDecoder dealloc] (in XiaoP) (MQTTDecoder.m:31)
-[MQTTSession connect] (in XiaoP) (MQTTSession.m:1547)
-[XYMQTTManager _connectAndResetRetryInterval:] (in XiaoP) (XYMQTTManager.m:565)
__22-[XYMQTTManager start]_block_invoke (in XiaoP) (XYMQTTManager.m:163)
-[ReconnectTimer reconnect] (in XiaoP) (ReconnectTimer.m:64)

I found that there is a corresponding fix in MQTTDecoder，But there is no such fix in MQTTCFSocketDecoder and MQTTCFSocketEncoder

MQTTDecoder.m

- (void)stream:(NSStream *)sender handleEvent:(NSStreamEvent)eventCode {
    // We contact our delegate, MQTTSession at some point in this method
    // This call can cause MQTTSession to dealloc and thus, MQTTDecoder to dealloc
    // So we end up with invalid object in the middle of the method
    // To prevent this we retain self for duration of this method call
    MQTTDecoder *strongDecoder = self;
    (void)strongDecoder;
    .....
}