I would certainly have 6.2 and 6.3 available for a few months of
testing, for sure.  Probably a 3 way compare with 5.2 so you can be
certain of a useable program if you limit to 5.2 / 6.3.

On Mon, Jan 13, 2020 at 5:33 PM Frank Swarbrick
<[email protected]> wrote:
>
> I was wondering what "methodologies" shops have for migrating to a new 
> "release" within the same "version" of a compiler.  Specifically, we 
> currently have Enterprise COBOL 6.2 (V6 R2) and 6.3 is now available.  Our 
> systems group asked if we just wanted to "replace" 6.2 with 6.3.  I'm a bit 
> wary especially of a program having been compiled with V6.2 but then 
> implemented with V6.3.  Am I over thinking this, perhaps because of the large 
> difference in the compiler from V4 to V5?  What is the likelihood of a 
> compiler bug being introduced in V6.3 for code that worked in V6.2?  Perhaps 
> very, very little.  But I'd still like to hear thoughts and opinions.
>
> For what its worth, along with 6.2 we still have 4.2 and 5.2 installed.  But 
> we really should only be using 6.2 at this point any time a program is 
> recompiled.  Anyway, up to this point we've always made sure that the 
> production compile is done with the same version/release as all of the 
> testing.
>
> Thanks,
> Frank
>
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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