PI94623: AT OPT(1/2), THE OFFSETS FROM R8 IN A CLC INSTRUCTION ARE IDENTICAL FOR AN IF STATEMENT WITH MULTIPLE ANDS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• At OPT(1/2), the offsets from R8 in a CLC instruction are
  identical for an IF statement with multiple ANDs, which
  erroneously compares the data item in working storage to itself.
  This problem does not occur at OPT(0).
  

Local fix

• Compile with OPT(0).
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5.2 compiling     *
  *                 programs at OPT(1|2) that MOVE a data item   *
  *                 to another with identical picture clause,    *
  *                 change the value of the sender, and then     *
  *                 compare two or more pairs of data items in   *
  *                 one IF statement, including the receiver of  *
  *                 the MOVE, such that by replacing the         *
  *                 receiver with the sender, the data items     *
  *                 used in the IF statement form two            *
  *                 contiguous sets of data items.               *
  ****************************************************************
  * PROBLEM DESCRIPTION: The compiler was combining comparisons  *
  *                      of several individual contiguous items  *
  *                      (including the receiver of the MOVE)    *
  *                      into one larger compare. It was         *
  *                      replacing the receiver with the         *
  *                      sender, although the value of the       *
  *                      sender had been changed between the     *
  *                      MOVE and IF. The IF statement could     *
  *                      produce an incorrect result.            *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  When combining several comparisons into one, the compiler was
  replacing a receiver with its corresponding sender without
  ensuring that the sender wasn't modified between the MOVE and
  IF.
  

Problem conclusion

• The compiler was fixed to only combine several comparisons into
  one if all senders of previous MOVEs weren't modified before
  the IF statement.
  

Temporary fix

Comments

• ×**** PE18/07/24 FIX IN ERROR. SEE APAR PH00880  FOR DESCRIPTION
  

APAR Information

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

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

  PI96222 PI97625 UI55821 UI55822 UI55823

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

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.