1 files changed, 2 insertions, 0 deletions

diff --git a/lib/libc/stdio/vsscanf.c b/lib/libc/stdio/vsscanf.c
index e776689f9a0e..0d4d05a10a4f 100644
--- a/lib/libc/stdio/vsscanf.c
+++ b/lib/libc/stdio/vsscanf.c
@@ -52,6 +52,7 @@ eofread(cookie, buf, len)
 	return (0);
 }
 
+int
 vsscanf(str, fmt, ap)
 	const char *str;
 	const char *fmt;
@@ -59,6 +60,7 @@ vsscanf(str, fmt, ap)
 {
 	FILE f;
 
+	f._file = -1;
 	f._flags = __SRD;
 	f._bf._base = f._p = (unsigned char *)str;
 	f._bf._size = f._r = strlen(str);