Got crashes while transitioning from NSLock to Mutex

Using Swift
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1

Granted, the code is modified AI slop.

I asked this on another forum, and they directed me here.

This is a successor to:

https://developer.apple.com/forums/thread/814231

I went into a slightly different direction. I generated more AI slop that use NSLock. Then I had the NSLockusage changed to Mutex usage. Now it crashes with:

Task 13: EXC_BREAKPOINT (code=1, subcode=0x18d29326c)

On one of the mutex closures. With an extended description:

warning: TypeSystemSwiftTypeRef::operator(): had to engage SwiftASTContext fallback for type $s7Combine10PublishersO21LineBreakingPublisherE11SplitAtZeroV12Subscription33_D18F5AAE73662968F407B0A79FBD1F8DLLCy_x_qd__GD

I put the class, a Subscription nested in its corresponding Publisher operator, in the given file

The code is in the “Subscription.txt” attachment in the source post.

2

Could you get a stack/back trace for this code to help find the code that is causing the issue. Also it may be helpful to clarify what Upstream is exactly.