Cobol v6 Migration Challenges

Created on Sept. 15, 2020, 3:23 p.m. - by CobolJim, CobolJim


Who's migrating to Cobol v6 and what difficulties have you encountered?


Comments (3)


Srinivasan
Sept. 16, 2020, 9:16 a.m.

I think, there are a few small source code changes, but many of the changes will be outside your COBOL source code.

Refer https://www.ibm.com/support/pages/migrating-cobol-v5-and-v6-compiler-different


Revathy, Sambathraj
Dec. 2, 2020, 9:22 a.m.

Migrating to COBOL 6 might result in us encountering a slew of problems as a result of COBOL 6 programs treating invalid code or data differently at run time. listed a few things which we encountered, 

1. Invalid data in Numeric USAGE DISPLAY data items. 
2. Over-populated binary data items. 
3. Parameter/Argument size mismatch between the caller and called program. 
4. Data items referenced before value assignment.


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