C++ ptrmemfun break if FUNCTION_BOUNDARY < 2 * BITS_PER_UNIT

[dewar@gnat.com]

are there really architectures where there is no penalty for having
odd-aligned function addresses? Hard to believe! Of course there are
architectures where there is no *hard requirement* for alignment, but
one would almost certainly expect a performance penalty. On the x86
for example, it is quite important to give decent alignment to jump
targets from an efficiency point of view.