Program: 74260
Project: 74260
Buggy source:
/** 
 * Construct an actor with the given container and name.
 * @param container The container.
 * @param name The name of this actor.
 * @exception IllegalActionException If the actor cannot be containedby the proposed container.
 * @exception NameDuplicationException If the container already has anactor with this name.
 */
public Exec(CompositeEntity container,String name) throws NameDuplicationException, IllegalActionException {
  super(container,name);
  command=new PortParameter(this,"String_Node_Str",new StringToken("String_Node_Str"));
  command.setStringMode(true);
  new Parameter(command.getPort(),"String_Node_Str",BooleanToken.TRUE);
  directory=new FileParameter(this,"String_Node_Str");
  directory.setExpression("String_Node_Str");
  environment=new Parameter(this,"String_Node_Str");
  String[] labels=new String[]{"String_Node_Str","String_Node_Str"};
  Type[] values=new Type[]{BaseType.STRING,BaseType.STRING};
  environment.setTypeEquals(new ArrayType(new RecordType(labels,values)));
  environment.setExpression("String_Node_Str");
  error=new TypedIOPort(this,"String_Node_Str",false,true);
  error.setTypeEquals(BaseType.STRING);
  new Parameter(error,"String_Node_Str",BooleanToken.TRUE);
  input=new TypedIOPort(this,"String_Node_Str",true,false);
  input.setTypeEquals(BaseType.STRING);
  new Parameter(input,"String_Node_Str",BooleanToken.TRUE);
  output.setTypeEquals(BaseType.STRING);
  new Parameter(output,"String_Node_Str",BooleanToken.TRUE);
  exitCode=new TypedIOPort(this,"String_Node_Str",false,true);
  exitCode.setTypeEquals(BaseType.INT);
  new Parameter(exitCode,"String_Node_Str",BooleanToken.TRUE);
  prependPlatformDependentShellCommand=new Parameter(this,"String_Node_Str",BooleanToken.FALSE);
  prependPlatformDependentShellCommand.setTypeEquals(BaseType.BOOLEAN);
  throwExceptionOnNonZeroReturn=new Parameter(this,"String_Node_Str",BooleanToken.TRUE);
  throwExceptionOnNonZeroReturn.setTypeEquals(BaseType.BOOLEAN);
  waitForProcess=new Parameter(this,"String_Node_Str",BooleanToken.TRUE);
  waitForProcess.setTypeEquals(BaseType.BOOLEAN);
}

Fixed version (ground truth):
/** 
 * Construct an actor with the given container and name.
 * @param container The container.
 * @param name The name of this actor.
 * @exception IllegalActionException If the actor cannot be containedby the proposed container.
 * @exception NameDuplicationException If the container already has anactor with this name.
 */
public Exec(CompositeEntity container,String name) throws NameDuplicationException, IllegalActionException {
  super(container,name);
  command=new PortParameter(this,"String_Node_Str",new StringToken("String_Node_Str"));
  command.setStringMode(true);
  new Parameter(command.getPort(),"String_Node_Str",BooleanToken.TRUE);
  directory=new FileParameter(this,"String_Node_Str");
  new Parameter(directory,"String_Node_Str",BooleanToken.FALSE);
  new Parameter(directory,"String_Node_Str",BooleanToken.TRUE);
  directory.setExpression("String_Node_Str");
  environment=new Parameter(this,"String_Node_Str");
  String[] labels=new String[]{"String_Node_Str","String_Node_Str"};
  Type[] values=new Type[]{BaseType.STRING,BaseType.STRING};
  environment.setTypeEquals(new ArrayType(new RecordType(labels,values)));
  environment.setExpression("String_Node_Str");
  error=new TypedIOPort(this,"String_Node_Str",false,true);
  error.setTypeEquals(BaseType.STRING);
  new Parameter(error,"String_Node_Str",BooleanToken.TRUE);
  input=new TypedIOPort(this,"String_Node_Str",true,false);
  input.setTypeEquals(BaseType.STRING);
  new Parameter(input,"String_Node_Str",BooleanToken.TRUE);
  output.setTypeEquals(BaseType.STRING);
  new Parameter(output,"String_Node_Str",BooleanToken.TRUE);
  exitCode=new TypedIOPort(this,"String_Node_Str",false,true);
  exitCode.setTypeEquals(BaseType.INT);
  new Parameter(exitCode,"String_Node_Str",BooleanToken.TRUE);
  prependPlatformDependentShellCommand=new Parameter(this,"String_Node_Str",BooleanToken.FALSE);
  prependPlatformDependentShellCommand.setTypeEquals(BaseType.BOOLEAN);
  throwExceptionOnNonZeroReturn=new Parameter(this,"String_Node_Str",BooleanToken.TRUE);
  throwExceptionOnNonZeroReturn.setTypeEquals(BaseType.BOOLEAN);
  waitForProcess=new Parameter(this,"String_Node_Str",BooleanToken.TRUE);
  waitForProcess.setTypeEquals(BaseType.BOOLEAN);
}