Bug in loop optimize (invalid postinc to preinc transformation)

[dewar@gnat.com]

<<Quite.  There's a pointer constant in the offending code.  It's not in
any array.  Do we offer implementation defined behaviour for numerical
pointer constants or not?  They do come in useful occasionally.
>>

It is hard NOT to offer implementation defined behavior :-)

I think you are asking if we provide easily defined useful behavior??