PH24413: ENHANCEMENT TO THE INITCHECK OPTION TO FIND ALL POSSIBLE "USED WITHOUT BEING INITIALIZED" FIELD

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• Enhancement to the INITCHECK option to find all possible "used
  without being initialized" field
  

Local fix

• New Function
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the Enterprise COBOL V6.2       *
  *                 compiler who are compiling programs with the *
  *                 INITCHECK compiler option and who would      *
  *                 like to expand the scope of data items that  *
  *                 are flagged as uninitialized.                *
  ****************************************************************
  * PROBLEM DESCRIPTION: New function: The current version of    *
  *                      the INITCHECK compiler option will only *
  *                      issue a warning message for data items  *
  *                      that are uninitialized on any and all   *
  *                      logic paths in the source program,      *
  *                      where it is referenced.                 *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  The way that the INITCHECK option is implemented in the
  compiler, it will not identify a data item that may be
  initialized on one path in a logic statement, but not on other
  paths, as uninitialized.  Customers have requested that this
  function be enhanced to allow for flagging data items that may
  be initialized on one path in a given logic, but not on another
  path, as being uninitialized.
  

Problem conclusion

Temporary fix

Comments

• The INITCHECK compiler option has been improved to
  support two new sub options LAX and STRICK.
  
  INITCHECK or INITCHECK(LAX)
      If INITCHECK or INITCHECK(LAX) is in effect, the compiler
  will check for uninitialized data items and issue a warning
  message when a data item is used without being initialized.
  However, if a data item is initialized on at least one logical
  path to a statement, no warning message will be issued.
  
  INITCHECK(STRICT)
      The compiler will still check for uninitialized data items
  and issue a warning message if a data item is used without
  being initialized.  However, unlike INITCHECK(LAX),
  INITCHECK(STRICT) will issue a warning message about
  uninitialized data for a data item used in a statement
  unless the data item is initialized on all logical paths to
  the statement.
  
  Here is a simple example program to illustrate the differences
  in behavior between specifying LAX versus STRICT:
  
      Y and Z represent some data items, with no value clauses
  
      PROCEDURE DIVISION
      IF Y > 5
        MOVE 2 TO Z
      END-IF
      DISPLAY Z
  
  Z is initialized on one path to the DISPLAY statement but not
  the other, so LAX mode should display an INITCHECK warning
  message for Y only, while STRICT will also display an INITCHECK
  warning message for Z.
  

APAR Information

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

  PH22581

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

  UI69122 UI69123 UI69124

Modules/Macros

• IGY8RWTU IGYCASMB IGYCCBE  IGYCCCRT IGYCCICS IGYCCSRV IGYCDGEN
  IGYCDIAG IGYCDMAP IGYCEN$0 IGYCEN$1 IGYCEN$2 IGYCEN$3 IGYCEN$4
  IGYCEN$5 IGYCEN$8 IGYCEN$D IGYCEN$R IGYCFGEN IGYCFREE IGYCINIT
  IGYCJA$0 IGYCJA$1 IGYCJA$2 IGYCJA$3 IGYCJA$4 IGYCJA$5 IGYCJA$8
  IGYCJA$D IGYCJA$R IGYCLIBH IGYCLIBO IGYCLIBR IGYCLSTR IGYCLVL0
  IGYCLVL1 IGYCLVL2 IGYCLVL3 IGYCLVL8 IGYCMALL IGYCOPI  IGYCOSCN
  IGYCPGEN IGYCRCTL IGYCRDPR IGYCRDSC IGYCREAL IGYCRWT  IGYCSCAN
  IGYCSIMD IGYCUE$0 IGYCUE$1 IGYCUE$2 IGYCUE$3 IGYCUE$4 IGYCUE$5
  IGYCUE$8 IGYCUE$D IGYCUE$R IGYCXREF IGYDRV   IGYEQCWI IGYMSGE
  IGYMSGK  IGYMSGT  IGYQCBE  IGYZQDRV IGYZQENU IGYZQJPN
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R620 PSY UI69122

     UP20/04/25 P F004

• R621 PSY UI69123

     UP20/04/25 P F004

• R622 PSY UI69124

     UP20/04/25 P F004

Fix is available

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