在可快速解码模型对象中添加新属性的App崩溃

Question

下面是我的示例代码。一切都很完美，但是如果试图在PageLoad或TestDetailResponseModel结构中添加一个新的属性，那么应用程序就会崩溃。API响应和解析没有问题。在print语句中获取解析的值。根据崩溃日志，这是与内存有关的东西，但我无法弄清楚。下面是我的示例代码。我的API响应大约是40 KB。请帮帮我。

Note-

1. I并不是只会消耗响应对象。如果将PageLoad从struct更改为class应用程序，则
2. 不会破坏

。

import RxCocoa
import RxSwift

public struct TestDetailViewModel {
    
    private func getTestDetailSuccessResponse() -> Driver<TestDetailResponseModel?> {
        
        //Make API call asynchronously using RxSwift and storing result in testDetailResponseModel
         let testDetailResponseModel: TestDetailResponseModel? = RXNetworkManager.execute(request: MyRequestModel) {

        //Api Response
        //Parse response. Parsing is proper. responseModel prints all the parsed properties with correct values of TestDetailResponseModel and PageLoad objects (detail, and pageNumber)
        print(responseModel)
        }
        return Driver.just(testDetailResponseModel)
    }
    
    private func loadDetail() {
        let isDetailExist = getTestDetailSuccessResponse().compactMap { response -> Bool? in
            print(response) //No Crash
            print(response?.pageLoad) //App crashed here if add pageNumber property in PageLoad object
            return response?.pageLoad != nil
        }
    }
}

public struct TestDetailResponseModel: Decodable {
    public let pageLoad: PageLoad?
    //...
}

public struct PageLoad: Decodable {
    public let detail: String?
    //...
    public let pageNumber: Double? //New property
}

=================Crash same====================报告

Exception Type:  EXC_BAD_ACCESS (SIGABRT)
Exception Subtype: KERN_INVALID_ADDRESS at 0x50a01fb550981f18 -> 0xffff9fb550981f18 (possible pointer authentication failure)
Exception Codes: 0x0000000000000001, 0x50a01fb550981f18
VM Region Info: 0xffff9fb550981f18 is not in any region.  Bytes after previous region: 18446532646169747225
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      MALLOC_NANO (reserved)   600018000000-600020000000 [128.0M] rw-/rwx SM=NUL  ...(unallocated)
--->
      UNUSED SPACE AT END
Exception Note:  EXC_CORPSE_NOTIFY
Triggered by Thread:  0

Application Specific Information:
=================================================================
==17015==ERROR: AddressSanitizer: SEGV on unknown address 0x50a01fb550981f18 (pc 0x00018f9e1d50 bp 0x00016bbf60c0 sp 0x00016bbf6080 T0)
==17015==The signal is caused by a UNKNOWN memory access.
#0 0x18f9e1d50 in swift::RefCounts<swift::RefCountBitsT<(swift::RefCountInlinedness)1> >::incrementSlow(swift::RefCountBitsT<(swift::RefCountInlinedness)1>, unsigned int)+0x2c (libswiftCore.dylib:arm64+0x302d50)
#1 0x18f9b20bc in _swift_retain_+0x54 (libswiftCore.dylib:arm64+0x2d30bc)
#2 0x10d8d5edc  (liboainject.dylib:arm64+0x5edc)
#3 0x18f9e7958 in swift_bridgeObjectRetain+0x30 (libswiftCore.dylib:arm64+0x308958)
#4 0x1191ab100 in outlined copy of PageLoad?+0x1dc (TestCore:arm64+0x10ff100)
#5 0x1196cf554 in outlined copy of TestDetailResponseModel?+0x6a4 (TestCore:arm64+0x1623554)
#6 0x11a1541bc in TestDetailViewModel.getTestDetailSuccessResponse(response:) TestDetailViewModel+APICalls.swift:69
#7 0x1195240b8 in closure #13 in TestDetailViewModel.transform(input:) TestDetailViewModel.swift:108
#8 0x10e59b30c in CompactMapSink.on(_:) CompactMap.swift:47
#9 0x10e59b550 in protocol witness for ObserverType.on(_:) in conformance CompactMapSink<A, B> <compiler-generated>
#10 0x10e5f91d0 in partial apply for implicit closure #2 in implicit closure #1 in ShareWhileConnectedConnection._synchronized_subscribe<A>(_:) <compiler-generated>
#11 0x10e58d8d8 in thunk for @escaping @callee_guaranteed (@in_guaranteed Event<A>) -> () <compiler-generated>
#12 0x10e5f804c in ShareReplay1WhileConnectedConnection.on(_:)+0x70 (RxSwift:arm64+0x8804c)
#13 0x10e5f7bf4 in protocol witness for ObserverType.on(_:) in conformance ShareReplay1WhileConnectedConnection<A> <compiler-generated>
#14 0x10e5b0514 in Sink.forwardOn(_:) Sink.swift:34
#15 0x10e582398 in SwitchSinkIter._synchronized_on(_:) Switch.swift:160
#16 0x10e5abb68 in SynchronizedOnType.synchronizedOn(_:) SynchronizedOnType.swift:16
#17 0x10e582488 in protocol witness for ObserverType.on(_:) in conformance SwitchSinkIter<A, B, C> <compiler-generated>
#18 0x10e5f91d0 in partial apply for implicit closure #2 in implicit closure #1 in ShareWhileConnectedConnection._synchronized_subscribe<A>(_:) <compiler-generated>
#19 0x10e58d8d8 in thunk for @escaping @callee_guaranteed (@in_guaranteed Event<A>) -> () <compiler-generated>
#20 0x10e5f804c in ShareReplay1WhileConnectedConnection.on(_:)+0x70 (RxSwift:arm64+0x8804c)
#21 0x10e5f7bf4 in protocol witness for ObserverType.on(_:) in conformance ShareReplay1WhileConnectedConnection<A> <compiler-generated>
#22 0x10e5b0514 in Sink.forwardOn(_:) Sink.swift:34
#23 0x10e59d0c8 in CatchSink.on(_:) Catch.swift:131
#24 0x10e59d31c in protocol witness for ObserverType.on(_:) in conformance CatchSink<A> <compiler-generated>
#25 0x10e605534 in closure #1 in ObserveOnSerialDispatchQueueSink.init(scheduler:observer:cancel:) ObserveOn.swift:184
#26 0x10e605d48 in partial apply for thunk for @escaping @callee_guaranteed (@guaranteed ObserveOnSerialDispatchQueueSink<A>, @in_guaranteed Event<A.ObserverType.Element>) -> (@out Disposable) <compiler-generated>
#27 0x10e5904e4 in partial apply for closure #1 in MainScheduler.scheduleInternal<A>(_:action:) <compiler-generated>
#28 0x10e585410 in thunk for @escaping @callee_guaranteed () -> () <compiler-generated>
#29 0x1139f950c in __wrap_dispatch_async_block_invoke+0xb8 (libclang_rt.asan_iossim_dynamic.dylib:arm64+0x3d50c)
#30 0x18010d240 in _dispatch_call_block_and_release+0x14 (libdispatch.dylib:arm64+0x2240)
#31 0x18010ea94 in _dispatch_client_callout+0xc (libdispatch.dylib:arm64+0x3a94)
#32 0x18011c418 in _dispatch_main_queue_drain+0x3cc (libdispatch.dylib:arm64+0x11418)
#33 0x18011c038 in _dispatch_main_queue_callback_4CF+0x24 (libdispatch.dylib:arm64+0x11038)
#34 0x180361c28 in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__+0x8 (CoreFoundation:arm64+0x85c28)
#35 0x18035c0ac in __CFRunLoopRun+0x97c (CoreFoundation:arm64+0x800ac)
#36 0x18035b214 in CFRunLoopRunSpecific+0x238 (CoreFoundation:arm64+0x7f214)
#37 0x18c25f608 in GSEventRunModal+0x9c (GraphicsServices:arm64+0x3608)
#38 0x184d88a94 in -[UIApplication _run]+0x3dc (UIKitCore:arm64+0xc0da94)
#39 0x184d8d630 in UIApplicationMain+0x6c (UIKitCore:arm64+0xc12630)
#40 0x104dc5958 in main AppDelegate.swift:32
#41 0x10b66dcd4 in start_sim+0x10 (dyld_sim:arm64+0x1cd4)
#42 0x10b71d084  (<unknown module>)
#43 0xa777ffffffffffc  (<unknown module>)
==17015==Register values:
x[0] = 0x000000018035ba08   x[1] = 0xaa1403f6aa1303e1   x[2] = 0x0000000000000001   x[3] = 0x0000000000000001
x[4] = 0x0000000000000000   x[5] = 0x0000000000000000   x[6] = 0x0000000000000000   x[7] = 0x0000000000000000
x[8] = 0x50a01fb550981f08   x[9] = 0x000000018035ba00  x[10] = 0xffffffffffffffff  x[11] = 0xaa1403f8aa1303e1
x[12] = 0x0000000000000000  x[13] = 0x0000000000000000  x[14] = 0x0000000000000000  x[15] = 0x0000000000000000
x[16] = 0x00000001cc0ac98c  x[17] = 0x0000000000000000  x[18] = 0x0000000000000000  x[19] = 0x000000016bbf6118
x[20] = 0x000000018035ba00  x[21] = 0x000000010d8dc000  x[22] = 0x000000016bbf60f8  x[23] = 0x000000010d8dc000
x[24] = 0x000000010d8dc000  x[25] = 0x0000000000000000  x[26] = 0x40c1d7097c1bda51  x[27] = 0x4000000153eb88d0
x[28] = 0xc000000000000030     fp = 0x000000016bbf60c0     lr = 0x000000018f9b20c0     sp = 0x000000016bbf6080
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (libswiftCore.dylib:arm64+0x302d50) in swift::RefCounts<swift::RefCountBitsT<(swift::RefCountInlinedness)1> >::incrementSlow(swift::RefCountBitsT<(swift::RefCountInlinedness)1>, unsigned int)+0x2c
==17015==ABORTING
dyld4 config: DYLD_ROOT_PATH=/Applications/Xcode_13.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot DYLD_INSERT_LIBRARIES=/Applications/Xcode_13.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/liboainject.dylib
CoreSimulator 802.6.1 - Device: iPhone 13 Pro Max (********-****-****-****-************) - Runtime: iOS 15.5 (19F70) - DeviceType: iPhone 13 Pro Max
dyld4 config: DYLD_ROOT_PATH=/Applications/Xcode_13.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot DYLD_INSERT_LIBRARIES=/Applications/Xcode_13.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DVTInstrumentsFoundation.framework/liboainject.dylib
abort() called


Kernel Triage:
VM - Compressor failed a blocking pager_get
VM - Compressor failed a blocking pager_get
VM - Compressor failed a blocking pager_get
VM - Compressor failed a blocking pager_get

Answer 1

没有多少信息，但我能猜到问题出在哪里

任何Api调用异步，您都需要对dataTask的句柄结果使用@转义完成。

private func getTestDetailSuccessResponse(completion: @escaping (TestDetailResponseModel>)->Void) {
    var testDetailResponseModel: TestDetailResponseModel?

    // Make api call
    // return result of call into completion as "completion(result)"
}

使用：

private func loadDetail() {
    getTestDetailSuccessResponse { result in
        let detail = result?.pageLoad
    }
}