diff options
| -rw-r--r-- | sys/kern/subr_sbuf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/kern/subr_sbuf.c b/sys/kern/subr_sbuf.c index 9e63e8e..80947a4 100644 --- a/sys/kern/subr_sbuf.c +++ b/sys/kern/subr_sbuf.c @@ -399,6 +399,7 @@ sbuf_cpy(struct sbuf *s, const char *str) int sbuf_vprintf(struct sbuf *s, const char *fmt, va_list ap) { + va_list ap_copy; int len; assert_sbuf_integrity(s); @@ -411,8 +412,10 @@ sbuf_vprintf(struct sbuf *s, const char *fmt, va_list ap) return (-1); do { + va_copy(ap_copy, ap); len = vsnprintf(&s->s_buf[s->s_len], SBUF_FREESPACE(s) + 1, - fmt, ap); + fmt, ap_copy); + va_end(ap_copy); } while (len > SBUF_FREESPACE(s) && sbuf_extend(s, len - SBUF_FREESPACE(s)) == 0); |
