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SIZEOF usable on string constants

Compiler version: 10.2017

SIZEOF until now was only usable on type identifiers and on variables. When using it on a constant identified, a syntax error P103 was shown (IDENTIFIER IS NOT OF APPROPRIATE CLASS).

SIZEOF is now usable on const identifiers, too.

For example: 



   procedure INIT ( var SCB : SCAN_BLOCK ) ;

      const MSG1 = 'symbol not known to source program scanner' ;
            MSG2 = 'unexpected end of source file' ;
            MSG3 = 'unexpected char in options string' ;
            MSG4 = 'closing paranthese expected in options string' ;
            MSG5 = 'the rest of the options string will be ignored' ;

      var C : SCAN_ERRCLASS ;
          N : INTEGER ;

      begin (* INIT *)

        ...

        PASSCANF ( SCB , 'S' , 'S' , 1 , MSG1 , SIZEOF ( MSG1 ) ) ;
        PASSCANF ( SCB , 'S' , 'S' , 2 , MSG2 , SIZEOF ( MSG2 ) ) ;
        PASSCANF ( SCB , 'S' , 'S' , 3 , MSG3 , SIZEOF ( MSG3 ) ) ;
        PASSCANF ( SCB , 'S' , 'S' , 4 , MSG4 , SIZEOF ( MSG4 ) ) ;
        PASSCANF ( SCB , 'S' , 'S' , 5 , MSG5 , SIZEOF ( MSG5 ) ) ;
      end (* INIT *) ;

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