A fix is available
APAR status
Closed as program error.
Error description
Building a COBOL v5 executable with both RMODE(24) (typically assembler) or AMODE(31) and RMODE(ANY) (COBOL v5 by its default) components leads to a multisegment executable. For such programs the LOAD macro returns a zero length. Due to the zero length, the COBOL v5+ run-time is not properly disposing of the v5+ CLLE (COBOL Load List Entry) when such a program is CANCEL'd, although it is deleting the program from memory. Some time later a call to the CANCEL'd program, which should create a new instance, instead attempts to branch to the deleted program.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Enterprise COBOL V5 users running programs * * in batch that CANCEL V5 programs that were * * linked with RMODE(24) programs, and then * * CALL them again. * * * **************************************************************** * PROBLEM DESCRIPTION: Runtime ABEND 0C4. When a V5 program * * linked with RMODE(24) programs is * * being cancelled, the COBOL runtime * * fails to clean up the internal control * * block associated with the program. * * Subsequently if the program is * * dynamically called again, an 0C4 ABEND * * may occur due to the incorrect * * information in the outdated internal * * control block. * * * **************************************************************** * RECOMMENDATION: Apply the provided PTF. * **************************************************************** When driven for ILC CANCEL, LE is not able to pass the length of the module being cancelled to the COBOL runtime, due to a documented limitation in the MVS LOAD service on multi segment program objects. This causes the COBOL runtime to miss finding the associated CLLE entries to perform program clean up with.
Problem conclusion
The COBOL runtime was corrected to check for zero module length during ILC CANCEL, and changed to using CSVQUERY to determine the correct module length. FIXCAT keyword: COB0501T/K COB0502T/K COB0601T/K
Temporary fix
Comments
APAR Information
APAR number
PI59594
Reported component name
LE ENT COBOL LI
Reported component ID
568819812
Reported release
790
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-03-22
Closed date
2016-04-12
Last modified date
2016-05-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI60674 UI36955 UI36954
Modules/Macros
IGZCEV4 IGZLLIBV IGZXAPI IGZXDMR IGZXD24 IGZXLPIO IGZXLPKA IGZXLPKB IGZXLPKC IGZXLPKD IGZXLPKE IGZXLPKF IGZXLPKG IGZXPK2
Fix information
Fixed component name
LE ENT COBOL LI
Fixed component ID
568819812
Applicable component levels
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:
14 December 2020