warning: '0' flag used with '%p' printf format

[John Breitenbach <breiten at lexmark dot com>]

Hi,
 Upon upgrading to gcc-4.2.0, I have begun to get warnings about using 
"0x%08x" when formatting
pointer arguments for printf-type functions.  I obviously should change 
the %x to %p.  But when I do
this, I haven't been able to find a way to continue to have my leading 
zeros.

gcc warns about asking for leading zeros with %p as in %010p, and 
eliminating warnings is why this subject came
up at all.  However, %010p (leading zeros, 10 chars wide), DOES give me 
the desired output on my RedHat-EL4
workstation.

My questions are 1) is this an appropriate warning? and 2) how 
could/should I get my desired behavior (0x followed
by exactly 8 digits) and still use %p to specify pointers?

PS - all of my data pointers will need all 8 hex digits and thus won't 
have/need leading zeros.  But code pointers won't,
and I'd like things to line up.

Thanks, John