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/* Copyright (c) 2007 Corinna Vinschen <corinna@vinschen.de> */
/*
FUNCTION
<<stpcpy>>---copy string returning a pointer to its end
INDEX
stpcpy
SYNOPSIS
#include <string.h>
char *stpcpy(char *restrict <[dst]>, const char *restrict <[src]>);
DESCRIPTION
<<stpcpy>> copies the string pointed to by <[src]>
(including the terminating null character) to the array
pointed to by <[dst]>.
RETURNS
This function returns a pointer to the end of the destination string,
thus pointing to the trailing '\0'.
PORTABILITY
<<stpcpy>> is a GNU extension, candidate for inclusion into POSIX/SUSv4.
<<stpcpy>> requires no supporting OS subroutines.
QUICKREF
stpcpy gnu
*/
#define IN_STPCPY
#define _GNU_SOURCE
#include <string.h>
#include <limits.h>
#include "local.h"
/*SUPPRESS 560*/
/*SUPPRESS 530*/
char *
stpcpy(char * __restrict dst, const char * __restrict src)
{
#if !defined(__PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__) \
&& !defined(_PICOLIBC_NO_OUT_OF_BOUNDS_READS)
long *aligned_dst;
const long *aligned_src;
/* If SRC or DEST is unaligned, then copy bytes. */
if (!UNALIGNED_X_Y(src, dst)) {
aligned_dst = (long *)dst;
aligned_src = (long *)src;
/* SRC and DEST are both "long int" aligned, try to do "long int"
sized copies. */
while (!DETECT_NULL(*aligned_src)) {
*aligned_dst++ = *aligned_src++;
}
dst = (char *)aligned_dst;
src = (char *)aligned_src;
}
#endif /* not __PREFER_SIZE_OVER_SPEED */
while ((*dst++ = *src++))
;
return --dst;
}
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