PI99191: COBOL V6.X PRODUCES UNREACHABLE JUMP FOR CONTINUE AT OPT(0)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The compiler may generate a branch instruction for the CONTINUE
  or EXIT statement that is unreachable from any other
  instruction, causing code coverage tools to incorrectly report
  that the line isn't covered
  

Local fix

• Compile at OPT(1|2)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V6.2 compiling     *
  *                 programs at OPT(0) that have an IF           *
  *                 statement where a CONTINUE or EXIT           *
  *                 statement is the only statement in the body  *
  *                 of an ELSE clause.                           *
  ****************************************************************
  * PROBLEM DESCRIPTION: The compiler may generate a branch      *
  *                      instruction for the CONTINUE or EXIT    *
  *                      statement that is unreachable from any  *
  *                      other instruction, causing code         *
  *                      coverage tools to incorrectly report    *
  *                      that the line isn't covered.            *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  The optimizer was changing a branch to another branch
  instruction, redirecting the first branch to the final
  destination. However, since the compiler guarantees that there
  will be an instruction generated for every line of COBOL code,
  the second branch statement could persist but be unreachable.
  

Problem conclusion

• The optimizer was fixed to not redirect one branch to another
  at OPT(0) unless both branch instructions are generated for the
  same line of COBOL source.
  

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:

  PH00110

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
  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  IGYWIVP1 IGYWIVP2 IGYZQDRV
  IGYZQENU IGYZQJPN
  

Fix information

• Fixed component name

  ENT COBOL FOR Z

• Fixed component ID

  5655EC600

Applicable component levels

• R620 PSY UI57342

     UP18/08/02 P F807

• R621 PSY UI58271

     UP18/10/02 P F809

• R622 PSY UI57344

     UP18/07/31 P F807

• R62H PSY UI58273

     UP18/09/06 P F809

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.