libswift_Concurrency.dylib could not be loaded

[ripplek]

How frequently does the bug occur?

Always

Description

dyld: lazy symbol binding failed: can't resolve symbol _$sScMMa in /private/var/containers/Bundle/Application/4B5CDE7E-4EE1-4BD0-AD7B-F8A577D78BB7/BGIM.app/Frameworks/RealmSwift.framework/RealmSwift because dependent dylib /usr/lib/swift/libswift_Concurrency.dylib could not be loaded
dyld: can't resolve symbol _$sScMMa in /private/var/containers/Bundle/Application/4B5CDE7E-4EE1-4BD0-AD7B-F8A577D78BB7/BGIM.app/Frameworks/RealmSwift.framework/RealmSwift because dependent dylib /usr/lib/swift/libswift_Concurrency.dylib could not be loaded

Stacktrace & log output

No response

Can you reproduce the bug?

Always

Reproduction Steps

iOS 18.2 works perfectly fine under the same conditions, but iOS 14.2 does not

In RealmSwift 15.2.1 and iOS 14.2 in the debug environment, this issue also reoccurs, but after the app is packaged and released to the AppStore, it is fine. I recently upgraded RealmSwift to 15.3.1, and in time for the app to be packaged and released to the AppStore, iOS 14.2 isn't working either

Version

10.53.1

What Atlas Services are you using?

Local Database only

Are you using encryption?

Yes

Platform OS and version(s)

iOS 14.2

Build environment

Xcode version: 16.2 (16C5032a)

[ripplek]

[Xcode 16.1] iOS 14.6 crashing with Realm 10.45.1 #8708

[ForAllKid]

using Xcode 16.0 and Realm 20.0.1. Then
In Build Phases -> Link Binary With Libraries, add libswift_Concurrency.tbd and change its status to Optional.
It works for iOS 13, but I want to understand why.

[ripplek]

using Xcode 15.2 and Realm 10.53.1.
It works for iOS 14.2
I think it's probably an Xcode bug @ForAllKid

[z3DD3r]

Versions 10.54.2 and 20.0.1 are affected when building with Xcode 16.1/16.2
Looks like it is an Xcode 16.1/16.2 issue with libswift_Concurrency back deployment on iOS 12.x

There is one workaround which helped me. I've changed the platforms to .iOS(.v13) and .tvOS(.v13) in Package.swift and crash is gone.