da/d6f/memmove_8c_source.html

 #include <string.h>

 void* __attribute__((weak)) memmove(void* s1, const void* s2, size_t n)
 {
     return memcpy(s1, s2, n);
 }
string.h

memmove
void * memmove(void *dest, const void *src, size_t n)
Copies n characters from the object pointed to by src to the object pointed to by dest.

memcpy
void * memcpy(void *__restrict dest, const void *__restrict src, size_t n)
Copies n characters from the object pointed to by src to the object pointed to by dest.

__attribute__
void * __attribute__((weak))
Definition: memmove.c:3