The memcpy() function shall copy n bytes from the object
pointed to by s2 into the object pointed to by
s1. If copying takes place between objects that overlap, the
behavior is undefined.
The memcpy() function shall return s1; no return value
is reserved to indicate an error.
No errors are defined.
The following sections are informative.
The memcpy() function does not check for the overflow of the
receiving memory area.
The Base Definitions volume of IEEE Std 1003.1-2001, <string.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at