strange behavior of event iteration

[Lennart Ochel]

model test
  Boolean b[2];
  Boolean vec[2];
  Boolean ac;
equation
  vec = b;
  b[1] = time < 0.25 or time > 0.75;
  b[2] = time < 0.5;
  when ac then
    .Modelica.Utilities.Streams.print("foo\n","");
  end when;
algorithm
  ac := false;
  for i in 1:2 loop
    ac := ac or change(vec[i]);
  end for;
end test;

produces the following error during simulation

assert            | assert  | ERROR: Too many event iterations. System is inconsistent. Simulation terminate.

and prints "foo\n" a lot of times. That is probably because of the wrong event handling for this model.

[Willi Braun]

It's not event handling, it's our code generation for pre-variables in for loop has a wrong index, so that in the example above for $PRE$Pvec values is $PRE$Pac as value taken.

[Willi Braun]

The following model demonstrates the effect, and has a lot wrong memory access,
what could be observed by valgrind.

model t1
  Boolean b[3];
equation
 for i in 2:3 loop
   b[i] = time>0.1+i/10;
  end for;
algorithm
  b[1] := false;
  for i in 2:3 loop
   b[1] := b[1] or change(b[i]);
  end for;
end t1;

[Willi Braun]

Fixed in r15522.