mbstowcs.c\multibyte\src - musl - musl - an implementation of the standard library for Linux-based systems

#include <stdlib.h>
#include <wchar.h>
size_t mbstowcs(wchar_t *restrict ws, const char *restrict s, size_t wn)
{
	return mbsrtowcs(ws, (void*)&s, wn, 0);
}