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3265 :: procs where you forget to return a value

• jackmott (orginal) [2017-10-21T05:58:20+02:00] view original

  I spent about an hour tonight tracking down a weird bug where it turned out I had a proc with a return value, but I forgot to return a value. This compiled fine, but ran wrong. I assume what happened is that the implicit return value was returned, with the default value for the type. Should it perhaps be a compiler error if no value is returned and the return value is never assigned to anywhere in the proc? Or at least a warning?

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• Arrrrrrrrr (orginal) [2017-10-21T08:39:23+02:00] view original

  In my experience, this is an issue you run into when lacking experience using nim. Then it stop giving you problems. Could be a good idea to warn under these circunstances.

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• leledumbo (orginal) [2017-10-21T09:38:58+02:00] view original

  I agree that a simple code like this:

  proc p: int =
    echo "test"
  
  var x = p()
  
  echo x
  Run

  should issue a warning (like in Pascal). Error is fine, too (like in Java), since it's very seldom an intention to do so.

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• dom96 (orginal) [2017-10-21T19:54:13+02:00] view original

  Please report this as an issue on GitHub.

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• jackmott (orginal) [2017-10-21T20:08:11+02:00] view original

  Thanks Dom, done.

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