fix wide scanf's handling of input failure on %c, and simplify %[

[musl] / src / stdio / vfprintf.c

diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index 928c8c1..91c6b93 100644 (file)
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c
@@ -652,8 +652,9 @@ int vfprintf(FILE *f, const char *fmt, va_list ap)
        FLOCK(f);
        if (!f->buf_size) {
                saved_buf = f->buf;
-               f->buf = internal_buf;
+               f->wpos = f->wbase = f->buf = internal_buf;
                f->buf_size = sizeof internal_buf;
+               f->wend = internal_buf + sizeof internal_buf;
        }
        ret = printf_core(f, fmt, &ap2, nl_arg, nl_type);
        if (saved_buf) {