strdup.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
1da2e3ebchin/***********************************************************************
2da2e3ebchin*                                                                      *
3da2e3ebchin*               This software is part of the ast package               *
4da2e3ebchin*           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
5da2e3ebchin*                      and is licensed under the                       *
6da2e3ebchin*                  Common Public License, Version 1.0                  *
7da2e3ebchin*                      by AT&T Knowledge Ventures                      *
8da2e3ebchin*                                                                      *
9da2e3ebchin*                A copy of the License is available at                 *
10da2e3ebchin*            http://www.opensource.org/licenses/cpl1.0.txt             *
11da2e3ebchin*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12da2e3ebchin*                                                                      *
13da2e3ebchin*              Information and Software Systems Research               *
14da2e3ebchin*                            AT&T Research                             *
15da2e3ebchin*                           Florham Park NJ                            *
16da2e3ebchin*                                                                      *
17da2e3ebchin*                 Glenn Fowler <gsf@research.att.com>                  *
18da2e3ebchin*                  David Korn <dgk@research.att.com>                   *
19da2e3ebchin*                   Phong Vo <kpv@research.att.com>                    *
20da2e3ebchin*                                                                      *
21da2e3ebchin***********************************************************************/
22da2e3ebchin#pragma prototyped
23da2e3ebchin
24da2e3ebchin#undef	VMDEBUG
25da2e3ebchin#define	VMDEBUG		0
26da2e3ebchin
27da2e3ebchin#include <ast.h>
28da2e3ebchin
29da2e3ebchin/*
30da2e3ebchin * return a copy of s using malloc
31da2e3ebchin */
32da2e3ebchin
33da2e3ebchin#if defined(__EXPORT__)
34da2e3ebchin#define extern	__EXPORT__
35da2e3ebchin#endif
36da2e3ebchin
37da2e3ebchinextern char*
38da2e3ebchinstrdup(register const char* s)
39da2e3ebchin{
40da2e3ebchin	register char*	t;
41da2e3ebchin	register int	n;
42da2e3ebchin
43da2e3ebchin	return (s && (t = newof(0, char, n = strlen(s) + 1, 0))) ? (char*)memcpy(t, s, n) : (char*)0;
44da2e3ebchin}
45