Dave Gibney's anxieties about how a module that should be AC(1) came to be
shipped as something else are entirely understandable; but with more experience
he will come to be more cynical.
Modules designed only for a reentramt environment can lose that attribute;
those that should be AC(1) can lose that attributre, etc., etc., ad nauseam.
Moreover, the vendor, be it IBM or an ISV, is very often not the culprit.
Instead, some apparently innocuous move/copy operation or the like turns out
to be. (One can abjure young sysprogs, over and over again, to use only the
Binder or, anciently, the Linkage Editor to move program objects/load modules
around; but in my experience they dismiss such advice as avuncular nonsense
until, finally, they have a really unfortunate experience that drives the
lesson home.)
Facility in the use of the Binder to change|restore the proper attributes of a
program object is a skill that every sysprog should have.
John Gilmore Ashland, MA 01721-1817 USA
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