A fix is available
APAR status
Closed as program error.
Error description
For some intermediate results involving an unsigned operand, compiled code inadvertently makes the result unsigned, leading to an invalid result.
Local fix
Apply the June 2021 compiler PTF, which doesn't suffer from the problem.
Problem summary
**************************************************************** * USERS AFFECTED: Users of Enterprise COBOL 6.2 compiling and * * running programs compiled with the * * INVDATA(...,NOCLEANSIGN) option in effect, * * and where the program contains a COMPUTE * * statement satisfying the following * * conditions: * * 1) There is a subtraction operation in the * * COMPUTE expression involving operands that * * are either packed or zoned decimal; * * 2) In the COMPUTE expression, the next * * operation to be performed after the * * subtraction is an addition operation; * * 3) One of the operands in the subtraction * * operation is a literal; * * 4) During execution of the COBOL program, * * the subtraction operation produces a * * negative result. * **************************************************************** * PROBLEM DESCRIPTION: Incorrect result. * **************************************************************** * RECOMMENDATION: Apply the IBM-provided PTF. * **************************************************************** The compiler was inadvertently setting the sign nibble of the subtraction operation to x'C' after the intermediate computation.
Problem conclusion
The compiler was updated to ensure that the sign nibble of the subtraction operation in this scenario is not cleaned at intermediate steps.
Temporary fix
Comments
APAR Information
APAR number
PH39556
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
2021-08-04
Closed date
2021-08-19
Last modified date
2021-09-22
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 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 IGYZQDRV IGYZQENU IGYZQJPN
Fix information
Fixed component name
ENT COBOL FOR Z
Fixed component ID
5655EC600
Applicable component levels
R620 PSY UI76842
UP21/08/27 P F108
R621 PSY UI76843
UP21/08/27 P F108
R622 PSY UI76844
UP21/08/27 P F108
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