avogelsgesang added a comment.

> I don't know much about coroutines, but it seems like your goal is to format 
> them like a linked list

Yes, and no. Coroutines are a compiler-provided type-erasure mechanism which 
(among other things) erase the type of the contained promise.
One common use case is that the library types (`std::generator`, the upcoming 
`std::lazy`, user-defined types, ...) store a "next"/"continuation" pointer 
inside that promise.

> so maybe the (synthetic) object which represents the "next" coroutine 
> (promise?) in the list should be of a pointer type, forcing the lldb (and 
> user) to do an actual dereference operation before viewing the next element. 
> Maybe that could be achieved by changing the type of 
> __promise.continuation.promise (I'm using the example from your patch 
> description) from std::...::promise_type to std::...::promise_type * ?

Good idea. That should work!

I will prepare a separate review which uses this approach. I would prefer to 
still first land this patch, then D132735 <https://reviews.llvm.org/D132735>, 
because I want to reuse helper functions from those two commits for making the 
proposed change


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D132624/new/

https://reviews.llvm.org/D132624

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