PK81851: warning message 'ambiguous reference to XXXX' when editing Cobol program

APAR status

• Closed as program error.

Error description

• Warning message 'ambiguous reference to XXXX' when editing a
  COBOL program.
  
  Customer opened a COBOL program in a z/OS project and receives
  the following warning message 'ambiguous reference to xxx'.
  
  Recreate Steps:
  
  - Have a COBOL program named c0.cbl.
  
    This program inludes two copybook members :
  
         WORKING-STORAGE SECTION.
  
         COPY c1.
  
         COPY c2.
  
  - Have the two copybook members named c1.cpy and c2.cpy.
  
    They contain two structures A and B with an identical
  definitions:
     01 A.                        01 B.
         02  Y    PICTURE X.          02  Y    PICTURE X.
         02  FILLER REDEFINES Y.      02  FILLER REDEFINES Y.
             03 Z    PICTURE X            03 Z    PICTURE X.
  - Without compiling, if you edit c0.cbl, there is a warning
    displayed on the COPY c1 and COPY c2 clauses :
  
    Copybook contains the following error Ambiguous reference
    to Y.
    This is the problem encountered by customer.
  
  - In fact, there is no error in the code. The program might be
    compiled without error and its execution is correct as soon
    as the fields are correctly referenced.
  
  Notes :
  
  - If for REDEFINES, another name is used instead of FILLER then
    no warning is issued.
  
  - If one of the copybook c1 or c2 is not included then, of
    course, no warning is issued even when name FILLER is used.
  

Local fix

Problem summary

• Redefine statements were not correctly resolving the redefined
  data item if the redefining statement was unnamed or FILLER.
  Additionally unnamed redefining data groups were not being
  populated correctly in content assist.
  

Problem conclusion

• Redefines statements which are unnamed or are FILLER are now
  correctly handled.  The problem listed in this APAR has been
  resolved with IBM Rational Developer for System z V7.5.1.1 Fix
  Pack which is available from the Recommended Fixes support
  download page:
  http://www-1.ibm.com/support/docview.wss?rs=2294&uid=swg27006335
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  RATL DEV FOR SY

• Fixed component ID

  5724T0700

Applicable component levels

• R751 PSY

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