PI97560: INCORRECT OUTPUT WITH NUMCHECK WHEN PASSING DATA BY CONTENT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• With compiler option NUMCHECK(ZON,PAC,NOBIN,MSG) in effect,
  data being passed to another program BY CONTENT may get
  overlaid, causing data corruption.
  

Local fix

• Pass data via BY REFERENCE
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5.2 compiling     *
  *                 programs at OPT(0) that use                  *
  *                 NUMCHECK(ZON|PAC|BIN) and pass USAGE         *
  *                 DISPLAY/PACKED-DECIMAL/BINARY data BY        *
  *                 CONTENT, or programs that use SSRANGE and    *
  *                 pass reference-modified data or items in a   *
  *                 table BY CONTENT.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: Data being passed to another program    *
  *                      via CALL BY CONTENT may be overwritten  *
  *                      by other data being passed BY CONTENT   *
  *                      on the same CALL.                       *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  In a call BY CONTENT, the compiler creates temporary variables
  to contain the values being passed, so the called program
  doesn't change data in the caller. The compiler has an
  optimization to reuse temporary variables when possible.
  NUMCHECK and SSRANGE checks were changing the compiler's
  internal state so that it no longer identified some temporary
  data items as being used by the CALL. Data for multiple
  parameters might be copied to the same temporary variable,
  giving it an incorrect value.
  

Problem conclusion

• The compiler was fixed to correctly identify when temporary
  variables are used on the same CALL statement even when
  NUMCHECK or SSRANGE checks are generated for parameters being
  passed to other programs.
  

Temporary fix

Comments

APAR Information

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

  PI95934

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

Modules/Macros

• IGY8RWTU IGYCBE   IGYCCBE  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 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 IGYECWI  IGYMSGE  IGYMSGK  IGYMSGT
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655W3200

Applicable component levels

• R520 PSY UI55821

     UP18/05/30 P F805

• R521 PSY UI55822

     UP18/05/31 P F805

• R522 PSY UI55823

     UP18/05/31 P F805

Fix is available

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