fix error handling that broke the compiler

[kikofernandez]

this closes #494 and fixes the compiler

[supercooldave]

@EliasC We (those of us who eagerly rebase) need this urgently.

[kikofernandez]

anyone can review the PR and merge (if you depend on it)

[EliasC]

I'm on it!

[EliasC]

Pushed an additional check that Main is active. I have checked @kikofernandez changes, so anyone that checked mine can squash and merge this now!

[albertnetymk]

I don't entirely follow the change in isMainClass. Isn't the second part always true if the first part is ture?

[EliasC]

I don't entirely follow the change in isMainClass. Isn't the second part always true if the first part is true?

Not in the following program

passive class Main
  def main() : void
    ()

[albertnetymk]

That should not even compile, right?

[EliasC]

That should not even compile, right?

Exactly! Hence the change in isMainClass :)

[albertnetymk]

I understand it now. Merging now.

It's surprising that it's got in in the first place.