major stdio overhaul, using readv/writev, plus other changes

[musl] / src / stdio / vswprintf.c

diff --git a/src/stdio/vswprintf.c b/src/stdio/vswprintf.c
index 2d9f200..8e8f80c 100644 (file)
--- a/src/stdio/vswprintf.c
+++ b/src/stdio/vswprintf.c
@@ -10,6 +10,8 @@ static size_t sw_write(FILE *f, const unsigned char *s, size_t l)
        size_t l0 = l;
        int i = 0;
        struct cookie *c = f->cookie;
+       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) {
                s+=i;
                l-=i;
@@ -41,6 +43,6 @@ int vswprintf(wchar_t *s, size_t n, const wchar_t *fmt, va_list ap)
                return -1;
        }
        r = vfwprintf(&f, fmt, ap);
-       __oflow(&f);
+       sw_write(&f, 0, 0);
        return r>=n ? -1 : r;
 }