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Status Not under consideration
Workspace COBOL Compilers
Created by Guest
Created on Mar 28, 2018

RELATED IDEAS

COBOL PARMCHECK Enhancement

6.2 Programming Guide states:


The PARMCHECK option tells the compiler to generate an extra data item following the last item in WORKING-STORAGE. This buffer data item is then used at run time to check whether a called subprogram corrupted data beyond the end of WORKING-STORAGE.

When a calling program is compiled with PARMCHECK, the compiler generates a buffer following the last data item in the WORKING-STORAGE section. At run time, before each call, the buffer is set to ALL x'AA'. After each call, the buffer is checked to see whether it was changed. The PARMCHECK option can help with your migration from COBOL V4 and earlier compilers to COBOL V6 and later compilers, and can also be used to clean up and check for good programming practices.

By only checking that the end of working storage is not breached, IBM appears to be focused on preventing Storage voilations (S0C4) with good programming practices being secondary.


The PARMCHECK feature can improve parameter passing validation by generating validation buffers after each 01 group in Working Storage.

After each CALL the buffer areas owned by the current (CALLER) are validated to ensure they have not been corrupted.

Idea priority Medium
  • Guest
    Reply
    |     Apr 11, 2018

    This is a duplicate of RFE 106128:
    https://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=106128

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