musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index 5e7be717..af069d13 100644
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c

@@ -674,9 +674,9 @@ int vfprintf(FILE *restrict f, const char *restrict fmt, va_list ap)

if (f->mode < 1) f->flags &= ~F_ERR;

if (!f->buf_size) {

saved_buf = f->buf;

- f->wpos = f->wbase = f->buf = internal_buf;

+ f->buf = internal_buf;

f->buf_size = sizeof internal_buf;

- f->wend = internal_buf + sizeof internal_buf;

+ f->wpos = f->wbase = f->wend = 0;

}

ret = printf_core(f, fmt, &ap2, nl_arg, nl_type);

if (saved_buf) {