3698. [cleanup] Replaced all uses of memcpy() with memmove().
[RT #35120]
(cherry picked from commit ebe54c7d2221c6a0a4b3d96bcae3280c823a45e6)
(cherry picked from commit 9b950c70f1a6406c0f3dff604822329d06fc4837)
(cherry picked from commit ae5f27d8856436d01f19c958d1a4afe8dc2bedb0)