don't print null received message, %.0[svq] prints nothing

[ppp.git] / pppd / utils.c

diff --git a/pppd/utils.c b/pppd/utils.c
index 8c818965406e7b2a3e4ec1a7bc3f4739eb1a92b5..131429d59a7081f3efb5e5daaeaed036d3a3b025 100644 (file)
--- a/pppd/utils.c
+++ b/pppd/utils.c
@@ -17,7 +17,7 @@
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 #ifndef lint
-static char rcsid[] = "$Id: utils.c,v 1.5 1999/06/01 01:43:34 paulus Exp $";
+static char rcsid[] = "$Id: utils.c,v 1.6 1999/06/24 00:17:48 paulus Exp $";
 #endif
 
 #include <stdio.h>
@@ -171,7 +171,8 @@ vslprintf(buf, buflen, fmt, args)
        if (*fmt == 0)
            break;
        c = *++fmt;
-       width = prec = 0;
+       width = 0;
+       prec = -1;
        fillch = ' ';
        if (c == '0') {
            fillch = '0';
@@ -192,6 +193,7 @@ vslprintf(buf, buflen, fmt, args)
                prec = va_arg(args, int);
                c = *++fmt;
            } else {
+               prec = 0;
                while (isdigit(c)) {
                    prec = prec * 10 + c - '0';
                    c = *++fmt;
@@ -265,11 +267,11 @@ vslprintf(buf, buflen, fmt, args)
        case 'q':               /* quoted string */
            quoted = c == 'q';
            p = va_arg(args, unsigned char *);
-           if (fillch == '0' && prec > 0) {
+           if (fillch == '0' && prec >= 0) {
                n = prec;
            } else {
                n = strlen((char *)p);
-               if (prec > 0 && prec < n)
+               if (prec >= 0 && n > prec)
                    n = prec;
            }
            while (n > 0 && buflen > 0) {
@@ -354,7 +356,7 @@ vslprintf(buf, buflen, fmt, args)
            len = num + sizeof(num) - 1 - str;
        } else {
            len = strlen(str);
-           if (prec > 0 && len > prec)
+           if (prec >= 0 && len > prec)
                len = prec;
        }
        if (width > 0) {