2966. [bug] isc_print_vsnprintf() failed to check if there was

                        space available in the buffer when adding a left
                        justified character with a non zero width,
                        (e.g. "%-1c"). [RT #22270]

CHANGES

+2966.	[bug]		isc_print_vsnprintf() failed to check if there was
+			space available in the buffer when adding a left
+			justified character with a non zero width,
+			(e.g. "%-1c"). [RT #22270]
+
 2965.	[func]		Test HMAC functions using test data from RFC 2104 and
 			RFC 4634. [RT #21702]
 

lib/isc/print.c

@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: print.c,v 1.35 2008/02/18 23:46:59 tbox Exp $ */
+/* $Id: print.c,v 1.36 2010/10/18 03:59:05 marka Exp $ */
 
 /*! \file */
 
@@ -468,7 +468,7 @@ isc_print_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
 			if (width > 0) {
 				count += width;
 				width--;
-				if (left) {
+				if (left && size > 1) {
 					*str++ = c;
 					size--;
 				}