IEFBR14 (was Re: IND$FILE)
Sean Conner
spc at conman.org
Mon Nov 19 15:24:35 CST 2018
It was thus said that the Great jim stephens via cctalk once stated:
>
> IFBR14 if you all are not familiar with MVS / MVT batch programming is a
> program which immediately terminates w/o any return codes by doing an
> assembly language return to the caller of the job step via the contents
> of R14 of the processor, which is also the return address.
I've always been amused by IEFBR14 ever since I heard about it. I first
came across it by this quote:
Every program has at least one bug and can be shortened by at least
one instruction---from which, by induction, one can deduce that
every program can be reduced to one instruction which doesn't work.
IEFBR14 was this program---one instruction long, and it contained a bug:
http://en.wikipedia.org/wiki/IEFBR14
-spc (The fix doubled the size of the program---such bloat!)
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