X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fstdio%2Fvswscanf.c;h=4c39f80655ddccc8e3599008427710a4da864b16;hb=a34b0465ba14c70532b8eaba650a9eac228fce57;hp=4396d7df644d85c9749701bc4e3c2b2f4d361c33;hpb=73ec1d0495bb676012fd69491900ca8beb989ef7;p=musl

diff --git a/src/stdio/vswscanf.c b/src/stdio/vswscanf.c
index 4396d7df..4c39f806 100644
--- a/src/stdio/vswscanf.c
+++ b/src/stdio/vswscanf.c
@@ -17,7 +17,7 @@ static size_t wstring_read(FILE *f, unsigned char *buf, size_t len)
 	f->rend = f->buf + k;
 	f->cookie = (void *)src;
 
-	if (!len) return 0;
+	if (!len || !k) return 0;
 
 	*buf = *f->rpos++;
 	return 1;