  It is pointed out that the existence of bare mass terms for matter fields
changes gauge symmetry patterns through the Hosotani mechanism. As a
demonstration, we study an SU(2) gauge model with massive adjoint fermions
defined on $M^4\otimes S^1$. It turns out that the vacuum structure changes at
certain critical values of $mL$, where $m~(L)$ stands for the bare mass (the
circumference of $S^1$). The gauge symmetry breaking patterns are different
from models with massless adjoint fermions. We also consider a supersymmmetric
SU(2) gauge model with adjoint hypermultiplets, in which the supersymmetry is
broken by bare mass terms for the gaugino and squark fields instead of the
Scherk-Schwarz mechanism.
