Wrong severity on diagnostic for required space after semicolon

[fm-117]

Describe the bug It looks like IBM compiler consider missing space after semicolon as a warning but not as an error.

To Reproduce (Type)Cobol code that cause the bug : (if any)

       IDENTIFICATION DIVISION.
       PROGRAM-ID. TCOFM117.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01 group1.
          05 array1 OCCURS 5.
             10 array2 OCCURS 5.
                15 item PIC X.
       01 a PIC X.
       01 b PIC X.
       PROCEDURE DIVISION.
      * Ok
           DISPLAY item (1 1)
      * Warning: A blank was missing before character"1"in column 28.
      * A blank was assumed.
           DISPLAY item (1;1)
      * Warning: A blank was missing before character"a"in column 17.
      * A blank was assumed.
      * Warning: A blank was missing before character"T"in column 19.
      * A blank was assumed.
      * Warning: A blank was missing before character"b"in column 22.
      * A blank was assumed.
           MOVE;a;TO;b
           GOBACK
           .
       End Program TCOFM117.

Expected behavior 4 warnings instead of 4 errors.

Technical Change the severity of associated diagnostic ? This should have no impact as the scanner produces token of the same length and type regardless of the presence or absence of a space after. Check uses of Scanner.ScanOneCharFollowedBySpaceOrNumericLiteral and Scanner.ScanOneCharFollowedBySpace methods for other chars that may be accepted by IBM compiler without a space after them.

How to test automatically Standard tests are enough.