I ran your test on some machines here.
DECsystem 5400, Ultrix 3.1C:
VAX8600, 4.3 BSD:
Your brk routine is broken!
SparcServer:
Sequent:
MIPS:
Your brk routine works correctly.
--
-IAN! (Ian! D. Allen) idallen at watcgl.uwaterloo.ca idallen at watcgl.waterloo.edu
[129.97.128.64] Computer Graphics Lab/University of Waterloo/Ontario/Canada