问题
We have migrated some of our CocoaPod dependencies to be build and linked with Swift Package Manager in Xcode 11. However, whenever we submit application to AppStore Connect and distribute with TestFlight, the app crashes the moment it tries to use API from one of the SPM linked dependencies. Other builds (adhoc and development) are working fine. Some of the SPM dependencies are also linked 2 app extensions.
Did anyone encounter this issue, would you have any idea what is the problem and/or how to fix it?
Attaching stack trace for the crash. This one happens in ObjectMapper dependency.
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x00000000800000d0
Termination Signal: Illegal instruction: 4
Termination Reason: Namespace SIGNAL, Code 0x4
Terminating Process: exc handler [19562]
Triggered by Thread: 0
Thread 0 name:
Thread 0 Crashed:
0 OurAwesomeApp 0x0000000101693d14 nominal type descriptor for EnumTransform + 0
1 OurAwesomeApp 0x000000010108cda0 <- infix<A>(_:_:) + 612 (__hidden#1488_:38)
2 OurAwesomeApp 0x0000000101074434 <- infix<A>(_:_:) + 100 (__hidden#434_:36)
3 OurAwesomeApp 0x0000000100cad360 TWSplitParticipant.mapping(map:) + 1388 (DataClasses.swift:1211)
4 OurAwesomeApp 0x00000001010842cc Mapper.map(JSON:) + 1224 (__hidden#1191_:106)
5 OurAwesomeApp 0x0000000101087c70 _hidden#1144_ + 24 (__hidden#110_:0)
6 libswiftCore.dylib 0x000000018f3cd61c $sSTsE10compactMapySayqd__Gqd__Sg7ElementQzKXEKlF + 732 (SequenceAlgorithms.swift:807)
7 OurAwesomeApp 0x0000000101084a68 Mapper.mapArray(JSONArray:) + 212 (__hidden#1191_:166)
8 OurAwesomeApp 0x0000000101082a8c Mapper.mapArray(JSONObject:) + 192 (__hidden#1191_:156)
9 OurAwesomeApp 0x00000001010753d4 _hidden#461_ + 148 (__hidden#487_:92)
10 OurAwesomeApp 0x0000000101088c8c _hidden#1301_ + 196
11 OurAwesomeApp 0x0000000100cac720 TWSplitRequest.mapping(map:) + 812 (DataClasses.swift:1157)
12 OurAwesomeApp 0x00000001010842cc Mapper.map(JSON:) + 1224 (__hidden#1191_:106)
13 OurAwesomeApp 0x0000000101082988 Mapper.map(JSONObject:) + 160 (__hidden#1191_:89)
14 OurAwesomeApp 0x00000001010752f0 _hidden#459_ + 644 (__hidden#487_:66)
15 OurAwesomeApp 0x000000010108896c <- infix<A>(_:_:) + 152 (__hidden#1307_:116)
16 OurAwesomeApp 0x0000000100ca7248 TWInvoice.mapping(map:) + 4000 (DataClasses.swift:377)
17 OurAwesomeApp 0x00000001010842cc Mapper.map(JSON:) + 1224 (__hidden#1191_:106)
18 OurAwesomeApp 0x0000000101087c70 _hidden#1144_ + 24 (__hidden#110_:0)
19 libswiftCore.dylib 0x000000018f3cd61c $sSTsE10compactMapySayqd__Gqd__Sg7ElementQzKXEKlF + 732 (SequenceAlgorithms.swift:807)
20 OurAwesomeApp 0x0000000101084a68 Mapper.mapArray(JSONArray:) + 212 (__hidden#1191_:166)
21 OurAwesomeApp 0x0000000101082a8c Mapper.mapArray(JSONObject:) + 192 (__hidden#1191_:156)
22 OurAwesomeApp 0x00000001010753d4 _hidden#461_ + 148 (__hidden#487_:92)
23 OurAwesomeApp 0x0000000101088c8c _hidden#1301_ + 196
24 OurAwesomeApp 0x0000000100ca5b88 TWInvoicesByType.mapping(map:) + 328 (DataClasses.swift:266)
25 OurAwesomeApp 0x00000001010842cc Mapper.map(JSON:) + 1224 (__hidden#1191_:106)
26 OurAwesomeApp 0x0000000101082988 Mapper.map(JSONObject:) + 160 (__hidden#1191_:89)
27 OurAwesomeApp 0x00000001010752f0 _hidden#459_ + 644 (__hidden#487_:66)
28 OurAwesomeApp 0x000000010108896c <- infix<A>(_:_:) + 152 (__hidden#1307_:116)
29 OurAwesomeApp 0x0000000100ca3adc TWAccount.mapping(map:) + 104 (DataClasses.swift:81)
30 OurAwesomeApp 0x00000001010842cc Mapper.map(JSON:) + 1224 (__hidden#1191_:106)
31 OurAwesomeApp 0x0000000101082988 Mapper.map(JSONObject:) + 160 (__hidden#1191_:89)
32 OurAwesomeApp 0x0000000100c47c18 closure #1 in DataServer.getAccountInfo(_:) + 492 (DataServer.swift:949)
33 OurAwesomeApp 0x00000001011d7888 _hidden#2846_ + 164
34 OurAwesomeApp 0x00000001011db76c _hidden#2893_ + 52 (__hidden#578_:0)
35 OurAwesomeApp 0x00000001011b55e0 _hidden#996_ + 28 (__hidden#578_:0)
36 libdispatch.dylib 0x0000000181e29610 _dispatch_call_block_and_release + 24 (init.c:1408)
37 libdispatch.dylib 0x0000000181e2a184 _dispatch_client_callout + 16 (object.m:495)
38 libdispatch.dylib 0x0000000181e0d35c _dispatch_main_queue_callback_4CF$VARIANT$armv81 + 996 (inline_internal.h:2487)
39 CoreFoundation 0x00000001820da3c4 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12 (CFRunLoop.c:1749)
40 CoreFoundation 0x00000001820d53b8 __CFRunLoopRun + 2004 (CFRunLoop.c:3069)
41 CoreFoundation 0x00000001820d48bc CFRunLoopRunSpecific + 464 (CFRunLoop.c:3192)
42 GraphicsServices 0x000000018bf40328 GSEventRunModal + 104 (GSEvent.c:2246)
43 UIKitCore 0x000000018616a6d4 UIApplicationMain + 1936 (UIApplication.m:4753)
44 OurAwesomeApp 0x0000000100c1048c main + 68 (OurAwesomeFactoryFactory.swift:25)
45 libdyld.dylib 0x0000000181f5f460 start + 4
回答1:
2019-11-27 update
In the related Swift bug post, somebody has found a workaround:
Setting DEAD_CODE_STRIPPING = NO in our app’s target fixes the crash.
original post
First of all, it is a compiling issue of SPM. Simply just rollback to CocoaPods.
Until Xcode 11.2.1, Apple has not yet fixed this issue.
Delete all the derived files, clean the project. And then try running your project with the release configuration. Now you should be able to reproduce the crash.
I was using two libs named Moya and Parchment in an iOS project, with Swift Package Manager, migrated from CocoaPods. And the app downloaded from TestFlight crashes when the logic referencing the two libs is executed.
And the crash log looks completely like nonsense, pointing to a memory alignment issue of the method descriptor of a method.
Apple mentioned a known issue in Xcode release note, I don't know if it is related:
If an iOS, tvOS, or watchOS app uses a Swift Package that builds a dynamic library, it cannot be submitted to the App Store. (55564324)
Workaround: Modify the Package manifest to build a static library.
来源：https://stackoverflow.com/questions/58801669/testflight-installed-app-crash-with-swift-package-manager-dependencies