>Number:         34459
>Category:       kern
>Synopsis:       Unconsistant behaviour in the %X flag for printf kernel function
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 03 16:25:00 +0000 2006
>Originator:     Arnaud Degroote
>Release:        current
>Organization:
>Environment:
NetBSD Hermes.at.home 4.99.1 NetBSD 4.99.1 (HERMES) #1: Wed Aug 16 21:26:29 CEST 2006  root@Hermes.at.home:/usr/build/objdir/sys/arch/i386/compile/HERMES i386

>Description:
When we try to port the acx driver from OpenBSD, we have noted that the %X flag doesn't have the expected behaviour ( we have d, and we wait for D ).

Reading the implementation of kprintf, it is clear there is a little bug in the implementation.
>How-To-Repeat:
try to see the result of a snprintf(buf, sizeof buf,"%X",13) ( in kerneland )
>Fix:
this trivial patch must resolve the issue 

 --- /usr/src/sys/kern/subr_prf.c        2006-01-28 15:37:31.000000000 +0100
+++ /home/zul/src/sys/kern/subr_prf.c   2006-09-03 18:23:12.000000000 +0200
@@ -1264,7 +1264,7 @@ reswitch: switch (ch) {
base = DEC;
goto nosign;
case 'X':
-                       xdigs = hexdigits;
+                       xdigs = HEXDIGITS;
goto hex;
case 'x':
xdigs = hexdigits;