Firebase-ios-sdk: [NSProcessInfo isiOSAppOnMac] crash

[shanksGuo]

[REQUIRED] Step 1: Describe your environment

• Xcode version: 12.0
• Firebase SDK version: master branch
• Installation method: CocoaPods
• Firebase Component: GoogleUtilities
• iOS version: 14.0

[REQUIRED] Step 2: Describe the problem

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSProcessInfo isiOSAppOnMac]: unrecognized selector sent to instance 0x2834ac5d0'

Steps to reproduce:

It was generated from users, I have not find reproduce steps. I thinks the pic above will help.

Relevant Code:

//GULAppEnvironmentUtil.m
+ (NSString *)applePlatform {
  NSString *applePlatform = @"unknown";

  ...
#if defined(__IPHONE_14_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000
  if (@available(iOS 14.0, *)) {
    applePlatform = [NSProcessInfo processInfo].isiOSAppOnMac ? @"ios_on_mac" : @"ios";
  } else {
    applePlatform = @"ios";
  }
...
}

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[paulb777]

@shanksGuo Thanks for the report. Do you have device information for the crashes? And can you confirm that the crash occurs on iOS 14 and only iOS 14?

[shanksGuo]

So far, according to our owner crash collection system, this crash only happened only on iOS14. We are trying to reproduce this locally.

[ksloginov]

Experiencing the same crash - 100% on iPhone (0 crashes on iPad for some reason) w/ iOS14 (we got plenty of them). Can't repro it locally though :-/

[paulb777]

Could it be that the isiOSAppOnMac API wasn't available in the early iOS 14 betas?

[ryanwilson]

@paulb777 that's my guess as well, I think I recall seeing something similar. I'm not sure if the @available check allows, but if so we could check for 14.0.1 and that could resolve it? Or we wrap in a respondsToSelector

[shanksGuo]

so far, I've only dicovered limited users of this type of crash, and cannot reproduce locally.

[Ekko-System]

Could it be that the isiOSAppOnMac API wasn't available in the early iOS 14 betas?

I confirm your idea, I have a phone with first beta and the crash occure 100% on this device. But not on device without beta

[warpling]

Seeing this on an iPad running an older beta. Updating it now.

[paulb777]

Planning to release the fix in GoogleUtilities 7.1.1 to CocoaPods in the next few days. The other Firebase distributions will pick this up in 7.2.0

[paulb777]

Run pod update to get Google Utilities 7.1.1 that just published to CocoaPods

[shanksGuo]

Thanks, I will update this.

[qinzhe]

Run pod update to get Google Utilities 7.1.1 that just published to CocoaPods

thank you