The Pascal compiler company
The Pascal compiler company
6.7.3 It is an error if the result of an activation of a function is undefined upon completion of the algorithm of the activation.
In other words, it is an error if the result of a function call is undefined.
This error is reported if checking for undefined values is enabled and the type of the function's result is one of the supported types (see Run-Time Project Options in the Irie Pascal User's Manual).