Add include files to get prototype declarations, and fix bugs found.

[unix-history] / usr / src / lib / libc / string / strdup.c

/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strdup.c	5.4 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <stddef.h>
#include <stdlib.h>
#include <string.h>

char *
strdup(str)
	const char *str;
{
	int len;
	char *copy;

	len = strlen(str) + 1;
	if (!(copy = malloc((u_int)len)))
		return((char *)NULL);
	bcopy(str, copy, len);
	return(copy);
}