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Migration from V1.1.1 to V4.1 (compatibility mode)


IBM Mainframe Forums -> PL/I & Assembler
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Ronald Boon

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Joined: 16 Mar 2011
Posts: 1
Location: netherlands

PostPosted: Wed Mar 23, 2011 4:09 pm
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We want to migrate to the current version of PLI (installed base + 11 million loc) . The old version is running in a compatibility mode already. We would like to switch to ""full function mode"" at the same time. Is there any experience to be able to anticipate on certain consequences?
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prino

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Joined: 07 Feb 2009
Posts: 1306
Location: Vilnius, Lithuania

PostPosted: Wed Mar 23, 2011 5:28 pm
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Enterprise PL/I is a lot stricter with regards to iffy code that worked in older versions, it's not impossible that you get rather a lot more warnings.

One of the better ways to handle migration is to change your compile JCL to use both compilers and copy the 4.1 listing the default-named listing if 4.1 throws up anything of severity >= 8.

Once 4.1 is standard, start tightening the screws using things like:

Code:
rules(noevendec nogoto(strict));
rules(noglobaldo nolaxbif nolaxctl nolaxdcl nolaxdef);
rules(nolaxentry nolaxif nolaxinout nolaxlink);
rules(nolaxmargins(xnumeric) nolaxpunc laxqual laxscale);
rules(nolaxsemi nolaxstg nolaxstrz nomulticlose nopadding);
rules(noprocendonly nostop nounref);

and
Code:
maxgen(2048);
maxnest(block(4) do(4) if(4));

and
Code:
deprecate(builtin(date))
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