PH20254: For an edited display numeric picture MOVE source, a conversion may modify memory after the conversion temporary

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When the source of a MOVE is an edited display decimal and the
  target is computational, a run-time routine is used to convert
  the source to a simple display numeric intermediate result,
  prior to the final conversion to the target.
  
  If DECIMAL-POINT IS COMMA is in effect, (eg. PIC
  Z.ZZZ.ZZZ.ZZZ.ZZ9,99) the run-time routine will erroneously
  perform an AND X'CF' on memory after the intermediate result.
  
  Depending on what's thus modified, there may be no noticeable
  outcome, or some indefinite failure. In the reported case, the
  file status was not correctly updated.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V6 and later       *
  *                 releases compiling and running programs      *
  *                 that MOVE data from numeric-edited data      *
  *                 items to unsigned numeric USAGE DISPLAY      *
  *                 data items, where the source item PICTURE    *
  *                 string has simple insertion editing          *
  *                 symbols (for example, COMMAs).               *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: When the compiler generates code to     *
  *                      MOVE a NUMERIC-EDITED data item to a    *
  *                      NUMERIC data item, the generated        *
  *                      instruction sequence uses a temporary   *
  *                      variable for the COBOL Runtime routine  *
  *                      to use as receiver. This compiler       *
  *                      generated temporary is located on the   *
  *                      stack, along with other temporaries.    *
  *                      When the NUMERIC-EDITED data item's     *
  *                      PICTURE string has simple insertion     *
  *                      editing symbols (e.g. B 0 / ,), the     *
  *                      COBOL runtime routine may calculate the *
  *                      byte location of the sign nibble        *
  *                      incorrectly. The bytes immediately      *
  *                      following the temporary on the stack    *
  *                      could be corrupted.                     *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  The COBOL Runtime routine that performs MOVE processing
  incorrectly calculates the byte location of the byte that
  contains the sign nibble.
  
  COB0601T/K COB0602T/K COB0603T/K
  

Problem conclusion

• The logic in the COBOL Runtime routine has been corrected.
  

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:

  UI67483 PH21259

Modules/Macros

• IGZCEV4  IGZLLIBV IGZXAPI  IGZXCDA  IGZXDMR
  IGZXD24  IGZXLPIO IGZXLPKA IGZXLPKB IGZXLPKC IGZXLPKD IGZXLPKE
  IGZXLPKF IGZXLPKG IGZXPK2
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7A0 PSY UI67483

     UP20/01/24 P F001

Fix is available

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