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Diffstat (limited to 'src/multibyte/mbsnrtowcs.c')
-rw-r--r--src/multibyte/mbsnrtowcs.c4
1 files changed, 3 insertions, 1 deletions
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) {