C union problems (or is a pointer a pointer?)

[Doug Gwyn]

In article <2700 at tekcae.CAX.TEK.COM> kurtk at tekcae.CAX.TEK.COM (Kurt Krueger) writes:
>Casting a pointer is really a NOP

No!  This is a common misconception.  Pointer casting can involve change
in representation, and when converting between pointer to char and
pointers to wider types it often does.