memdup
fun memdup(mem: <Error class: unknown class>? = null, byteSize: <Error class: unknown class>): <Error class: unknown class>?
Allocates @byte_size bytes of memory, and copies @byte_size bytes into it from @mem. If @mem is NULL it returns NULL.
Return
a pointer to the newly-allocated copy of the memory
Parameters
mem
the memory to copy
byteSize
the number of bytes to copy