dfa: catch endless recursion in Call.toString, better env debug output

tokiwa-software / fuzion

The Fuzion Language Implementation

https://fuzion-lang.dev

GNU General Public License v3.0

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dfa: catch endless recursion in Call.toString, better env debug output #4153

Closed fridis closed 5 days ago

fridis commented 1 week ago

Call.toString could result in endless recursion if debug output calling this is added in code reachable from Call.result. To aovoid this, this patch adds a check for recursion and stop it.

Also improve the error message if an aborted effect is not found.

Both these changes helpd me woking in #4148.