A fix is available
APAR status
Closed as program error.
Error description
USERS AFFECTED: Users of Enterprise COBOL Vx.x compiling programs at OPT(1|2) with a PERFORM UNTIL statement that checks several conditions, where at least two of the conditions compare pairs of data items that are sequential in memory, the paragraph being PERFORMed is PERFORMed from at least two PERFORM statements, and the paragraph being PERFORMed ends with another PERFORM statement. PROBLEM SUMMARY: The optimizer was combining the sequential comparisons for the PERFORM UNTIL test into one larger compare, invalidating the compiler's internal state about which PERFORMed paragraphs could return to which PERFORM statements, causing the compiler to incorrectly conclude that one of the return points wouldn't be reached. CONCLUSION: The optimizer was fixed to not combine sequential comparisons when they were part of a PERFORM UNTIL statement.
Local fix
Compile at OPT(0)
Problem summary
**************************************************************** * USERS AFFECTED: Users of Enterprise COBOL V6.2 compiling * * programs at OPT(1|2) with a PERFORM UNTIL * * statement that checks several conditions, * * where at least two of the conditions * * compare pairs of data items that are * * sequential in memory, the paragraph being * * PERFORMed is PERFORMed from at least two * * PERFORM statements, and the paragraph being * * PERFORMed ends with another PERFORM * * statement. * **************************************************************** * PROBLEM DESCRIPTION: The outer PERFORM may incorrectly * * return to the wrong location. * **************************************************************** * RECOMMENDATION: Apply the provided PTF. * **************************************************************** The optimizer was combining the sequential comparisons for the PERFORM UNTIL test into one larger compare, invalidating the compiler's internal state about which PERFORMed paragraphs could return to which PERFORM statements, causing the compiler to incorrectly conclude that one of the return points wouldn't be reached.
Problem conclusion
The optimizer was fixed to not combine sequential comparisons when they were part of a PERFORM UNTIL statement.
Temporary fix
Comments
APAR Information
APAR number
PH08709
Reported component name
ENT COBOL FOR Z
Reported component ID
5655EC600
Reported release
620
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-02-19
Closed date
2019-03-20
Last modified date
2019-04-08
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
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 IGYCOB2 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 UI62019
UP19/03/29 P F903
R621 PSY UI62020
UP19/03/29 P F903
R622 PSY UI62021
UP19/03/29 P F903
R62H PSY UI62022
UP19/03/29 P F903
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.
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Document Information
Modified date:
12 December 2023