X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstdio%2Fvswprintf.c;fp=src%2Fstdio%2Fvswprintf.c;h=fc223cf2b8c5853565407b1f8a7d6bc9bd8297df;hb=1d5750b95c06913a1f18a995481276d698d20fae;hp=7f98c5c9690e46c604674a9d6afa527cebca4d37;hpb=0e5234807dcdc76c43f9313c6ba9e2b7da408d8c;p=musl

diff --git a/src/stdio/vswprintf.c b/src/stdio/vswprintf.c
index 7f98c5c9..fc223cf2 100644
--- a/src/stdio/vswprintf.c
+++ b/src/stdio/vswprintf.c
@@ -18,6 +18,7 @@ static size_t sw_write(FILE *f, const unsigned char *s, size_t l)
 	if (s!=f->wbase && sw_write(f, f->wbase, f->wpos-f->wbase)==-1)
 		return -1;
 	while (c->l && l && (i=mbtowc(c->ws, (void *)s, l))>=0) {
+		if (!i) i=1;
 		s+=i;
 		l-=i;
 		c->l--;