PM74761: OPTIMIZING COMPILER CREATES BAD CODE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When EGL supplies the COBOL compiler with a very large program
  to compile and optimize, the compiler generates bad code.
  In one case an array index defined as PICTURE S9(5)
  COMPUTATIONAL-3 created bad object code.  Changing it to
  COMPUTATIONAL solved it but that's just one symptom.
  

Local fix

• Compile with option NOOPT.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL Version 4          *
  *                 compiling large programs (such as those      *
  *                 sometimes produced by EGL) and use the       *
  *                 compiler option OPTIMIZE.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: The COBOL compiler builds an incorrect  *
  *                      program.                                *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  *                                                              *
  ****************************************************************
  A counter overflowed in the COBOL compiler optimizer phase
  causing it to use a wrong intermediate value.
  

Problem conclusion

• The COBOL compiler optimizer is changed to detect the
  counter overflow an abort with OSRVE-V1.
  If you encounter OSRVE-V1, the compiler is unable to optimize
  this program, so either recompile with compiler option NOOPTMIZE
  or break the program up into smaller parts.
  

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:

  UK83046 UK83047

Modules/Macros

•    IGYOCOMN IGYOCOMP IGYOENV  IGYOPREF IGYOSRVE
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655S7100

Applicable component levels

• R400 PSY UK83046

     UP12/10/30 P F210

• R420 PSY UK83047

     UP12/10/30 P F210

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.