Missing SentryCrashExceptionApplication Implementation for non-MacOS Builds Causes Linker Error

[phunkeler]

Platform

iOS

Environment

Production

Installed

Manually

Version

8.41.0

Xcode Version

16.2

Did it work on previous versions?

8.39.0

Steps to Reproduce

On Mac:

1. Clone sentry-dotnet
2. Change version in modules/sentry-cocoa.properties from 8.39.0 to 8.41.0
3. Build the samples/Sentry.Samples.Maui app

Expected Result

Build completed successfully.

Actual Result

Mac (Intel):

Xamarin.Shared.Sdk.targets(1663,3): Error: clang++ exited with code 1:
Undefined symbols for architecture x86_64:
“OBJC_CLASS$_SentryCrashExceptionApplication”, referenced from:
initial-undefines
Id: symbol(s) not found for architecture x86_64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

Mac (M3):

Xamarin.Shared.Sdk.targets(1663,3): Error: clang++ exited with code 1:
Undefined symbols for architecture arm64:
“OBJC_CLASS$_SentryCrashExceptionApplication”, referenced from:
initial-undefines
Id: symbol(s) not found for architecture arm64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

Are you willing to submit a PR?

No response

[phunkeler]

For non-macOS platforms (when TARGET_OS_OSX is false), the header declares SentryCrashExceptionApplication as a subclass of NSObject, but there's no implementation provided for this case.

If SentryCrashExceptionApplication is truly only meant for macOS, shouldn't the header file reflect that? Otherwise, an "empty" implementation should be provided for non-macOS platforms (like it was before #4471)?

This affects sentry-dotnet/pull/3786 and ultimately, something that can be circumvented on the dotnet-side, if need be.

[brustolin]

Thanks for reaching out @phunkeler. We will release a fix soon.