The constructor of FGCondition may throw exceptions of type JSBSim::BaseException when a <condition> element is improperly specified in the XML input files. The constructor of FGCondition is called by FGScript::LoadScript and the constructor of FGDistributor but none of them are handling properly the case where an exception is thrown by FGCondition:

• The method FGScript::LoadScript expects an exception of type std::string and therefore misses the deletion of the variable newEvent when FGCondition throws an exception BaseException.
• The constructor of FGDistributor does not catch any exception thrown by FGCondition so the variable current_case is not deleted when FGCondition throws.

These are 2 potential memory leaks that occur when JSBSim finds an error in a <condition> element.

Fixing these memory leaks have brought an opportunity to avoid the constructor of FGCondition outputting messages in the console. The error messages are now issued by the callers of the constructor of FGCondition which saves passing the instance of FGLogger to the constructor of FGCondition.