[PATCH] C undefined behavior fix

[dewar@gnat.com]

<<According to the minutes of the last WG14 meeting, WG14 have not yet
resolved DR#260.  If you disagree with the conclusions we reached in the
UK C Panel about the provenance of pointer values, you could always go to
the next meeting of your National Body and argue that they should take
some other position on that DR at the next WG14 meeting; but it seems
clear to me that being able to take provenance into account is important
for optimisation in the cases given in that DR.
>>

I certainly agree with this construction of DR#260. Linus, I really think
you should read DR#260. If you want to play language lawyer, you have to
do the homework :-)