reinit(der(x), ...) should give better error message

[Peter Aronsson]

Validating this model:

model bouncingball
  Real y;
  Real dery13;
initial equation 
  y=5;
  der(y)=0;
equation 
  der(dery13)=-9.81;
  when {y < 0,y > 0} then
    reinit(der(y), (-0.95)*der(y));
  end when;
  dery13=der(y);
end bouncingball;

gives this error message:

Error: No matching function found for reinit in component <NO COMPONENT>
Error: Class reinit not found in scope bouncingball.
Error: Error occured while flattening model bouncingball

A more helpful message would be "Error: The first argument of reinit must be a variable of type Real or an array of such variables."

[Lennart Ochel]

Replying to petar:

A more helpful message would be "Error: The first argument of reinit must be a variable of type Real or an array of such variables."

Or even better:

"Error: The first argument of reinit must be a variable of type Real or an array 
of such variables that must be selected as a state (resp., states) at least when 
the enclosing when clause becomes active"

[Martin Sjölund]

Postponed until 1.9.1

[Martin Sjölund]

This ticket was not closed for 1.9.1, which has now been released. It was batch modified for milestone 1.9.2 (but maybe an empty milestone was more appropriate; feel free to change it).

[Martin Sjölund]

Milestone changed to 1.9.3 since 1.9.2 was released.

[Martin Sjölund]

Moved to new milestone 1.9.4

[Martin Sjölund]

Milestone pushed to 1.9.5

[Martin Sjölund]

Milestone renamed

[Martin Sjölund]

Ticket retargeted after milestone closed

[Martin Sjölund]

Milestone moved to 1.12.0 due to 1.11.0 already being released.

[Francesco Casella]

Replying to lochel:

Replying to petar:

A more helpful message would be "Error: The first argument of reinit must be a variable of type Real or an array of such variables."

Or even better:

"Error: The first argument of reinit must be a variable of type Real or an array 
of such variables that must be selected as a state (resp., states) at least when 
the enclosing when clause becomes active"

The new front end gives:

[1] 02:18:06 Translation Error
[M: 10:5-10:35]: The first argument to reinit must be a variable of type Real or an array of such variables.