RE: [MI400] Match program object to source member; CAN'T use source last update timestamp in object

["Dan Bale" <dbale@xxxxxxxxx>]

Scott, using QSCMATPG to materialize two program objects compiled from the
exact same source shows there are some differences, so if this is what you
were talking about calculating a checksum for, this would not work.

However, your idea got me thinking, although a little late in the game I
think.  What if IBM built in a hash value from the live source statements
used to compile the program object and stored it in the program object?
Then provide a separate utility/API to for us users to run on a specified
source member that spits out a hash value.  Match that to the one in the
program object, and you're good to go.  By "live source statements", the
compiler would ignore all comment statements and comment areas within live
statements (i.e., columns 60-80 on a C-spec).

Shoulda thought of that about 13 years ago...

Dan Bale
SAMSA, Inc.
989-790-0507
DBale@SAMSA.com <mailto:DBale@SAMSA.com>
  Quiquid latine dictum sit altum viditur.
  (Whatever is said in Latin seems profound.)


-----Original Message-----
From: mi400-admin@midrange.com [mailto:mi400-admin@midrange.com]On
Behalf Of Scott Klement
Sent: Friday, April 26, 2002 10:57 AM
To: mi400@midrange.com
Cc: midrange-l@midrange.com
Subject: Re: [MI400] Match program object to source member; CAN'T use
source last update timestamp in object



I guess if this were my project, I'd use MI to get the actual executable
code of the program, and create an MD5 checksum of it.   Then I'd compile
the source to QTEMP, and take an MD5 checksum of that, and see if they're
the same.

Slow & ugly, I know. :)