It's an entry from 1994 btw.
Worst Abuse of the Rules:
Massachusetts Institute of Technology
305 Memorial Dr., Room 005B
Cambridge, Ma 02139
Nearly every year, one or more people would submit what they claimed
was the world's smallest self reproducing program. While the sizes
of these submissions varied, a quick glance would reveal that they
were too big, until this entry came along.
While strictly speaking, smr.c is not a valid C program, it is
not an invalid C program either! Some C compilers will compile
an empty file into a program that does nothing. But even if your
compiler can't, the build instructions supplied with this entry
will produce an executable file. On most systems, the stdout
from the executable will exactly match original source.
In the future, the contest rules will specify a minimum size
that is one character larger than this entry, forever eliminating
this sort of program from contest. After all, how many variations
can one make on this entry? :-)
Selected notes from the author:
The world's smallest self-replicating program. Guaranteed.
Produces a listing of itself on stdout.
Copyright (c) 1994, Landon Curt Noll & Larry Bassel.
All Rights Reserved. Permission for personal, educational or non-profit use is
granted provided this this copyright and notice are included in its entirety
and remains unaltered. All other uses must receive prior permission in writing
from both Landon Curt Noll and Larry Bassel.