Following errors within coroutines

Is there a way to figure out what line an exception is generated in a coroutine?

How can I decode:

Graph+<Start>__58.MoveNext()

Is that instruction 58, line 58, or who knows?

Thank you!
-Jon

 

This is a bug in Mono. Currently Mono is really bad at reporting errors from coroutines.

The reason is that when compiling, the c# compiler creates a new class for every coroutine. (Called something like OuterClass+<MethodName>__NN.)

This class contains the code of the coroutine split up into a big switch statment and a MoveNext method for running the next segment of the coroutine and return the next yield value.

The problem is that the relation to the original source code gets lost at some point, so it is hard to know where the error happened.