xv6

commit 45854caa93eecc3f80d34940b7cf6a400b640d69
parent d90113b638ce1324544f8aaf75daa0d414907a33
Author: rsc <rsc>
Date:   Wed,  6 Sep 2006 16:38:39 +0000

print "0" for null string

Diffstat:
M
console.c
 | 
10
+++++++---

1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/console.c b/console.c
@@ -129,9 +129,13 @@ cprintf(char *fmt, ...)
       } else if(c == 's'){
         char *s = (char*)*ap;
         ap++;
-        while(*s != 0){
-          cons_putc(*s);
-          s++;
+        if(s == 0){
+          cons_putc('0');
+        }else{
+          while(*s != 0){
+            cons_putc(*s);
+            s++;
+          }
         }
       } else if(c == '%'){
         cons_putc(c);