X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmultibyte%2Fmbsnrtowcs.c;h=931192e2d83c4291059a9c6e18ee58d6fdf50592;hb=f9895817321790bef33a56e3b10f3f71d989c23e;hp=cae4caa2a6c74e884f2bccc5698c1d2eaa9e1d24;hpb=6cec7bc57f599f43f4041cec2093e3c9231dbaab;p=musl

diff --git a/src/multibyte/mbsnrtowcs.c b/src/multibyte/mbsnrtowcs.c
index cae4caa2..931192e2 100644
--- a/src/multibyte/mbsnrtowcs.c
+++ b/src/multibyte/mbsnrtowcs.c
@@ -5,6 +5,7 @@ size_t mbsnrtowcs(wchar_t *restrict wcs, const char **restrict src, size_t n, si
 	size_t l, cnt=0, n2;
 	wchar_t *ws, wbuf[256];
 	const char *s = *src;
+	const char *tmp_s;
 
 	if (!wcs) ws = wbuf, wn = sizeof wbuf / sizeof *wbuf;
 	else ws = wcs;
@@ -15,7 +16,7 @@ size_t mbsnrtowcs(wchar_t *restrict wcs, const char **restrict src, size_t n, si
 
 	while ( s && wn && ( (n2=n/4)>=wn || n2>32 ) ) {
 		if (n2>=wn) n2=wn;
-		n -= n2;
+		tmp_s = s;
 		l = mbsrtowcs(ws, &s, n2, st);
 		if (!(l+1)) {
 			cnt = l;
@@ -26,6 +27,7 @@ size_t mbsnrtowcs(wchar_t *restrict wcs, const char **restrict src, size_t n, si
 			ws += l;
 			wn -= l;
 		}
+		n = s ? n - (s - tmp_s) : 0;
 		cnt += l;
 	}
 	if (s) while (wn && n) {