Module buses cannot be used in DEFINITIONS (without explicitly passing by argument)

[5nizza]

See the comment 2b270f4#commitcomment-46270780

[kleinreact]

Thanks for the indication. Unfortunately, there is no quick fix to the problem. The tricky part about busses is that they can intertwine the evaluation order, which may cause jumps between definition evaluations and the evaluation of the bus sizes. To give an example, consider:

INFO
{
  TITLE:       ""
  DESCRIPTION: ""
  SEMANTICS:   Mealy
  TARGET:      Mealy
}

GLOBAL
{
  PARAMETERS
  {
    n = 2;
  }
    
  DEFINITIONS
  {
    last = a[SIZE a - 1];
    m =
      n > 0:     n
      otherwise: 1;
  }
}
MAIN
{
  INPUTS {}
  OUTPUTS { a[m]; }
  GUARANTEES { last }
}

Resolving the possible dependencies therefore needs some more advanced dependency tracking. However, the costs are questionable, since the problem can always be avoided by passing the bus as a function argument instead.