avoid hitting eof in wcstol

[musl] / src / stdlib / wcstol.c

diff --git a/src/stdlib/wcstol.c b/src/stdlib/wcstol.c
index cbdd806..822bcf1 100644 (file)
--- a/src/stdlib/wcstol.c
+++ b/src/stdlib/wcstol.c
@@ -11,6 +11,7 @@ static size_t do_read(FILE *f, unsigned char *buf, size_t len)
        size_t i;
        const wchar_t *wcs = f->cookie;
 
+       if (!wcs[0]) wcs=L"@";
        for (i=0; i<f->buf_size && wcs[i]; i++)
                f->buf[i] = wcs[i] < 128 ? wcs[i] : '@';
        f->rpos = f->buf;
@@ -30,8 +31,8 @@ static unsigned long long wcstox(const wchar_t *s, wchar_t **p, int base, unsign
        FILE f = {0};
        f.flags = 0;
        f.rpos = f.rend = 0;
-       f.buf = buf;
-       f.buf_size = sizeof buf;
+       f.buf = buf + 4;
+       f.buf_size = sizeof buf - 4;
        f.lock = -1;
        f.read = do_read;
        f.cookie = (void *)s;