1 files changed, 18 insertions, 0 deletions
diff --git a/system/lib/libc/musl/src/multibyte/mbrlen.c b/system/lib/libc/musl/src/multibyte/mbrlen.c
new file mode 100644
index 00000000..c9714ef8
--- /dev/null
+++ b/system/lib/libc/musl/src/multibyte/mbrlen.c
@@ -0,0 +1,18 @@
+/* 
+ * This code was written by Rich Felker in 2010; no copyright is claimed.
+ * This code is in the public domain. Attribution is appreciated but
+ * unnecessary.
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+#include <wchar.h>
+#include <errno.h>
+
+#include "internal.h"
+
+size_t mbrlen(const char *restrict s, size_t n, mbstate_t *restrict st)
+{
+	static unsigned internal;
+	return mbrtowc(0, s, n, st ? st : (mbstate_t *)&internal);
+}