PH41165: INCORRECT BRANCH CALCULATION IN COMMON PROGRAM RESULTS IN LOOPING CONDITION, WITH OPT(2)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A called program may return to an incorrect location when it is
  called by multiple programs
  

Local fix

• Compile with OPT(0)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 6.2 compiling      *
  *                 programs as a batch compilation where one    *
  *                 program statically calls another non-nested  *
  *                 program more than once and the called        *
  *                 program contains a GOTO to a paragraph or    *
  *                 section within or PERFORMs a paragraph or    *
  *                 section.                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: Execution within a called program       *
  *                      could incorrectly transfer to another   *
  *                      copy of that called program.            *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF                       *
  ****************************************************************
  The compiler may inline smaller programs into their caller,
  replacing the call statement with the body of the called
  program. This allows for more optimization opportunities and
  increases performance by getting rid of the overhead of calling
  a program. Labels created from paragraph or section names must
  be unique in a program, so if a called program is inlined two
  or more times into the same caller, the compiler created only
  one label for the multiple copies. This meant that branches to
  a paragraph or section name in any of the copies would end up
  at the label in the first copy, changing the program's flow of
  execution.
  

Problem conclusion

• The compiler was fixed to only inline a program into its caller
  once.
  

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:

  PH42023

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 IGYCOB2E IGYCOPI
  IGYCOPT  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 UI77740

     UP21/10/30 P F110

• R621 PSY UI77741

     UP21/10/30 P F110

• R622 PSY UI77742

     UP21/10/30 P F110

• R62H PSY UI77743

     UP21/10/30 P F110

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.