From: Thomas Leonard <talex5@gmail.com>
Date: Wed, 1 Jul 2015 09:24:50 +0000 (+0100)
Subject: Accept %z in printf formats
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=e6e91f5c2fac25d5f497efa70e7ffb7bdf4987b0;p=people%2Fliuw%2Flibxenctrl-split%2Fmini-os.git

Accept %z in printf formats

Before, we only supported %Z (upper-case). It seems that the lower-case
version is standard, and this matches the behaviour of Xen's vsprintf.c.

Signed-off-by: Thomas Leonard <talex5@gmail.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
---

diff --git a/lib/printf.c b/lib/printf.c
index 3d02e95..40f92fc 100644
--- a/lib/printf.c
+++ b/lib/printf.c
@@ -346,12 +346,14 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 
         /* get the conversion qualifier */
         qualifier = -1;
-        if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt =='Z') {
+        if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt =='Z' || *fmt == 'z') {
             qualifier = *fmt;
             ++fmt;
             if (qualifier == 'l' && *fmt == 'l') {
                 qualifier = 'L';
                 ++fmt;
+            } else if (qualifier == 'z') {
+                qualifier = 'Z';
             }
         }
         if (*fmt == 'q') {