A fix is available
APAR status
Closed as program error.
Error description
When the dividend is redefined as the quotient, a DIVIDE GIVING REMAINDER can give the wrong remainder. This occurs at all optimization levels. Example: When WSCD11-PRODUCT-ACCUM = +0195 and WSDC11-ELEVEN = +011: WORKING-STORAGE SECTION. 01 WS. 05 WSCD11-PRODUCT-ACCUM PIC S9(4) COMP-3. 05 WSCD11-QUOTIENT REDEFINES WSCD11-PRODUCT-ACCUM <== Note the REDEFINES PIC S9(4) COMP-3. 05 WSCD11-REMAINDER PIC S99 COMP-3. 05 WSCD11-ELEVEN PIC S999 COMP-3 VALUE +11. DIVIDE WSCD11-PRODUCT-ACCUM BY WSCD11-ELEVEN, GIVING WSCD11-QUOTIENT REMAINDER WSCD11-REMAINDER. Under COB V4.2, WSCD11-QUOTIENT = +0017 WSCD11-REMAINDER = +08 Under COB V6.1, WSCD11-QUOTIENT = +0017 WSCD11-REMAINDER = -70 <= Incorrect
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of Enterprise COBOL 6.2 compiling and * * running programs containing a DIVIDE * * statement with GIVING and REMAINDER * * phrases, where the data item receiving the * * quotient overlaps in memory with the data * * item containing the dividend or the data * * item containing the divisor, assuming such * * data items exist. * **************************************************************** * PROBLEM DESCRIPTION: Incorrect runtime result. The * * remainder of the DIVIDE statement is * * calculated incorrectly. * **************************************************************** * RECOMMENDATION: Apply the provided PTF. * **************************************************************** When the data item receiving the quotient overlapped with the data item containing the dividend or the data item containing the divisor, the compiler was using incorrect data to calculate the remainder of the DIVIDE statement.
Problem conclusion
The compiler was updated so that for DIVIDE statements with GIVING and REMAINDER phrases, if there is a possibility that the data item receiving the quotient can overlap with the data item containing the dividend or the data item containing the divisor, then the dividend and/or divisor values are stored in a temp so that they can be used later to correctly calculate the remainder of the DIVIDE statement.
Temporary fix
Comments
APAR Information
APAR number
PI97620
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
2018-05-04
Closed date
2018-05-28
Last modified date
2018-06-04
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 IGYCDOPT 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 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 UI56120
UP18/06/01 P F805
R621 PSY UI56121
UP18/06/01 P F805
R622 PSY UI56122
UP18/06/01 P F805
R62H PSY UI56123
UP18/06/01 P F805
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.
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SS6SG3","label":"Enterprise COBOL for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"620","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
12 December 2023