Xcode 12 simulator crash

Question

I'm getting weird crash in Xcode 12 simulator with signal SIGABRT right after launch. it is happening on released version of Xcode 12.0 and Xcode 12.0.1 I have tried with newest beta 12.2.

App is working fine on device.

I can not trace much due to less log. following is stack.

Thread 1

dyld`__abort_with_payload:
0x1194b0ed4 <+0>:  movl   $0x2000209, %eax          ; imm = 0x2000209 
0x1194b0ed9 <+5>:  movq   %rcx, %r10
0x1194b0edc <+8>:  syscall 
->  0x1194b0ede <+10>: jae    0x1194b0ee8               ; <+20>
0x1194b0ee0 <+12>: movq   %rax, %rdi
0x1194b0ee3 <+15>: jmp    0x1194af408               ; cerror_nocancel
0x1194b0ee8 <+20>: retq   
0x1194b0ee9 <+21>: nop    
0x1194b0eea <+22>: nop    
0x1194b0eeb <+23>: nop

EDIT After Adding exception break point, getting following console output

dyld: Library not loaded: /usr/lib/libnfshared.dylib
Referenced from: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreNFC.framework/CoreNFC
Reason: no suitable image found.  Did find:
/usr/lib/libnfshared.dylib: mach-o, but not built for platform iOS-sim

In my project i'm not using CoreNFC. it is not linked and not being used by pods, this i've already checked

This of any help? https://stackoverflow.com/questions/42027601/dyld-abort-with-payload-with-no-error-message — skaak, Sep 28 '20 at 11:42
Yes thread sanitizer if OFF Malloc is OFF Zombies are OFF not using custom framework only Pods and some system frameworks (adSupport, CoreTelephony and iAd) — Arslan Asim, Sep 28 '20 at 11:54
You have entitlements for all these (ad, telephone..)? Also, are you using any arguments to run it? — skaak, Sep 28 '20 at 12:23
most of them are for firebase, and no special argument for them — Arslan Asim, Sep 28 '20 at 12:32
You can try the usual - delete ```~/Library/Developer/Xcode/Derived data```. Also make a backup of ```Developer``` and delete e.g. the ```Caches``` in Core Simulators and anything that looks remotely temporary and give it another go. — skaak, Sep 28 '20 at 13:57
@koen i have updated my question after adding breakpoint exception — Arslan Asim, Sep 28 '20 at 14:16
@ArslanAsim Looks like a bug in iOS 14: https://openradar.appspot.com/FB8699389 — koen, Sep 28 '20 at 14:19

score 4 · Answer 1 · answered Oct 01 '20 at 06:07

My solution: Manually copied libnfshared.dylib from Xcode 12 beta 6 to: Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

This works for me.

If you want to avoid the hassle of downloading 11.25GB Xcode 12.2 beta for a single file. I have the file to share.

You may execute the following command to download and place it inside the Xcode package:

sudo curl https://storage.googleapis.com/mobile-simulator-build/libnfshared.dylib -o /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libnfshared.dylib

Hope it helps

score 1 · Answer 2 · edited Sep 29 '20 at 23:20

I had the same issue where the simulator for iOS14 would crash right after launch. The older iOS simulators and deploying to a device with iOS14 worked fine.

My solution: Manually copied libnfshared.dylib from Xcode 12 beta 6 to:

Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

as it appears this file is missing in release version.

score 0 · Answer 3 · edited Sep 29 '20 at 15:05

0

I hope this helps:

delete "VALID_ARCHS" from Target/App/Build Settings.

If you have Bitrise builds than I suggest adding: arm64 x86_64 to it. Because for some reason Bitrise currently will crash if "VALID_ARCHS" is removed.

Example:

edited Sep 29 '20 at 15:05

koen

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answered Sep 29 '20 at 07:46

Milos

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score 0 · Answer 4 · answered Sep 30 '20 at 10:38

0

This issues gets solved with

Xcode-12.2 beta 2. Released on September 29, 2020.

waiting for stable version to confirm if things work as expected as working in beta.

answered Sep 30 '20 at 10:38

Arslan Asim

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Xcode 12 simulator crash

4 Answers4