.\" -*- coding: UTF-8 -*-
'\" t
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\" and Copyright 2015 Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" SPDX-License-Identifier: Linux-man-pages-copyleft
.\"
.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sun Jul 25 10:41:09 1993 by Rik Faith (faith@cs.unc.edu)
.\"*******************************************************************
.\"
.\" This file was generated with po4a. Translate the source file.
.\"
.\"*******************************************************************
.TH memcpy 3 "2023년 7월 20일" "Linux man\-pages 6.05.01" 
.SH 이름
memcpy \- 메모리 영역 복사하기
.SH 라이브러리
표준 C 라이브러리 (\fIlibc\fP, \fI\-lc\fP)
.SH 요약
.nf
\fB#include <string.h>\fP
.PP
\fBvoid *memcpy(void \fP\fIdest\fP\fB[restrict .\fP\fIn\fP\fB], const void \fP\fIsrc\fP\fB[restrict .\fP\fIn\fP\fB],\fP
\fB             size_t \fP\fIn\fP\fB);\fP
.fi
.SH 설명
\fBmemcpy\fP() 함수는 메모리 영역 \fIsrc\fP에서 메모리 영역 \fIdest\fP로 \fIn\fP 바이트를 복사한다.  메모리 영역은
겹쳐지지 않는다.  만일 메모리 영역을 겹쳐 쓰길 원한다면 \fBmemmove\fP(3)를 사용해라.
.SH 반환값
\fBmemcpy\fP() 함수는 포인터 \fIdest\fP를 반환한다.
.SH 속성
이 섹션에서 사용되는 용어에 대한 설명은 \fBattributes\fP(7)을 참조하십시오.
.TS
allbox;
lbx lb lb
l l l.
상호 작용	속성	번호
T{
.na
.nh
\fBmemcpy\fP()
T}	Thread safety	MT\-Safe
.TE
.sp 1
.SH 표준
C11, POSIX.1\-2008.
.SH 이력
POSIX.1\-2001, C89, SVr4, 4.3BSD.
.SH CAVEATS
.\" glibc commit 6fb8cbcb58a29fff73eb2101b34caa19a7f88eba
.\" From forward copying to backward copying
Failure to observe the requirement that the memory areas do not overlap has
been the source of significant bugs.  (POSIX and the C standards are
explicit that employing \fBmemcpy\fP()  with overlapping areas produces
undefined behavior.)  Most notably, in glibc 2.13 a performance optimization
of \fBmemcpy\fP()  on some platforms (including x86\-64) included changing the
order in which bytes were copied from \fIsrc\fP to \fIdest\fP.
.PP
.\" Adobe Flash player was the highest profile example:
.\"   https://bugzilla.redhat.com/show_bug.cgi?id=638477
.\"   Reported: 2010-09-29 02:35 EDT by JCHuynh
.\"   Bug 638477 - Strange sound on mp3 flash website
.\"
.\"   https://sourceware.org/bugzilla/show_bug.cgi?id=12518
.\"   Bug 12518 - memcpy acts randomly (and differently) with overlapping areas
.\"   Reported:       2011-02-25 02:26 UTC by Linus Torvalds
.\"
.\" glibc commit 0354e355014b7bfda32622e0255399d859862fcd
This change revealed breakages in a number of applications that performed
copying with overlapping areas.  Under the previous implementation, the
order in which the bytes were copied had fortuitously hidden the bug, which
was revealed when the copying order was reversed.  In glibc 2.14, a
versioned symbol was added so that old binaries (i.e., those linked against
glibc versions earlier than 2.14)  employed a \fBmemcpy\fP()  implementation
that safely handles the overlapping buffers case (by providing an "older"
\fBmemcpy\fP()  implementation that was aliased to \fBmemmove\fP(3)).
.SH "추가 참조"
\fBbcopy\fP(3), \fBbstring\fP(3), \fBmemccpy\fP(3), \fBmemmove\fP(3), \fBmempcpy\fP(3),
\fBstrcpy\fP(3), \fBstrncpy\fP(3), \fBwmemcpy\fP(3)
.PP
.SH 번역
이 매뉴얼 페이지의 한국어 번역은 다음에 의해 편집되었습니다:
정강훈 <skyeyes@soback.kornet.net>
. 
.PP
이 번역은 무료 문서입니다. 저작권 조건에 대해서는
.UR https://www.gnu.org/licenses/gpl-3.0.html
GNU General Public License 버전 3
.UE
이상을 읽으십시오. 책임이 없습니다.
.PP
이 매뉴얼 페이지의 번역에서 오류를 발견하면
.MT translation-team-ko@googlegroups.com
.ME
로 이메일을 보내주십시오.