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" Warning: 'otherwise' can never be used"

This warning message is displayed when one of the following occurs:

• otherwise is used in a variant record but all the possible values of the variant selector have already been linked to a variant, and therefore the variant linked to otherwise can never become active. For example

   t = record case a : boolean of
       true : ( x : integer);
       false: ( y : char);
       otherwise
        (z : boolean)
   end;

  will generate this warning, because the variant selector a can have only two values (true and false), and these values are linked to the first two variants ( x : integer) and ( y : char), and therefore the third variant (z : boolean) can never become active.

• otherwise is used in a case statement but all the possible values of the case index have already been linked to one of the case list element, and therefore the case list element linked to otherwise can never be executed.

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