1 files changed, 14 insertions, 0 deletions
diff --git a/src/string/memmove.c b/src/string/memmove.c
new file mode 100644
index 00000000..22bb4b35
--- /dev/null
+++ b/src/string/memmove.c
@@ -0,0 +1,14 @@
+#include <string.h>
+
+void *memmove(void *dest, const void *src, size_t n)
+{
+	char *d = dest;
+	const char *s = src;
+	if (d==s) return d;
+	if ((size_t)(d-s) < n) {
+		while (n--) d[n] = s[n];
+		return dest;
+	}
+	/* Assumes memcpy is overlap-safe when dest < src */
+	return memcpy(d, s, n);
+}