App crash when dynamically linked with Combine and launched on iOS 12

Question

florentmorin OP

Created Jul ’19

Replies 2

Boosts 0

Views 1.7k

Participants 2

My app uses an embed framework.

This framework has a conditional use of Combine with:

- canImport

- @available.

But, when running on iOS 12, app crashes.

dyld: Library not loaded: /System/Library/Frameworks/Combine.framework/Combine
Referenced from: /Users/.../Library/Developer/Xcode/DerivedData/../Build/Products/Debug-iphonesimulator/XYZ_SDK.framework/XYZ_SDK
Reason: image not found

Same thing on device.

Thanks for your help.

Answered by florentmorin in 676472022

Finally working with this solution, also used with SwiftUI:

#if (arch(arm64) || arch(x86_64))
#if canImport(Combine)

// Combine code

#endif
#endif

Boost

Answer 1

Mark Vader OP

Aug ’20

Are any of your iOS 13 objects implementing a custom hash? I noticed this caused me to crash in iOS 12 and earlier when conditionally linking to Combine

Code Block Swift func hash(into hasher: inout Hasher) {
          hasher.combine(foo)
      }

0

Answer 2

florentmorin OP

May ’21

Accepted Answer

Finally working with this solution, also used with SwiftUI:

#if (arch(arm64) || arch(x86_64))
#if canImport(Combine)

// Combine code

#endif
#endif

0