COBCH1664 Perform range:<procedure-name1> thru <procedure-name2>

Overlapping PERFORM ranges have been detected in the source code.
Note: This error message is only applicable to managed COBOL, and then only when compiled with the ILSHOWPERFORMOVERLAP directive.

The error message indicates the beginning and ending procedures of one of the overlapping PERFORM ranges indicated by COBCH1663.

When no section name is present at the beginning of the PROCEDURE DIVISION, <procedure-name1> is displayed as {procedure division entry}. When a PERFORM range extends off the end of a program, <procedure-name-1> is displayed as {end procedure division}. When a PERFORM range begins at an ENTRY statement, <procedure-name-1> is displayed as {entry ""}.

$set ilshowperformoverlap
 perform a thru c.
 perform c thru f.
 perform f.
                               *> errors are displayed as follows:
 a section.
 display "Running section a.". *> COBCH1663E Overlapping perform range: 3 entries
                               *> COBCH1664E    perform range: a thru c
 b section.
 display "Running section b.".
 c section.                    *> COBCH1664E    perform range: c thru f
 display "Running section c.".
 d section.
 display "Running section d.".
 e section.
 display "Running section e.".
 f section.                    *> COBCH1664E    perform range: f thru f
 display "Running section f.".