Mercurial > hg > xemacs-beta
diff src/strcat.c @ 428:3ecd8885ac67 r21-2-22
Import from CVS: tag r21-2-22
author | cvs |
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date | Mon, 13 Aug 2007 11:28:15 +0200 |
parents | |
children | abe6d1db359e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/strcat.c Mon Aug 13 11:28:15 2007 +0200 @@ -0,0 +1,61 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* Synched up with: Not in FSF. */ + +# include <config.h> +# ifndef REGISTER /* Strictly enforced in 20.3 */ +# define REGISTER +# endif + +/* In HPUX 10 the strcat function references memory past the last byte of + the string! This will core dump if the memory following the last byte is + not mapped. + + Here is a correct version from glibc 1.09. +*/ + +char *strcat (char *dest, const char *src); + +/* Append SRC on the end of DEST. */ +/* CONST IS LOSING, but const is part of the interface of strcat */ +char * +strcat (char *dest, const char *src) +{ + REGISTER char *s1 = dest; + REGISTER CONST char *s2 = src; + char c; + + /* Find the end of the string. */ + do + c = *s1++; + while (c != '\0'); + + /* Make S1 point before the next character, so we can increment + it while memory is read (wins on pipelined cpus). */ + s1 -= 2; + + do + { + c = *s2++; + *++s1 = c; + } + while (c != '\0'); + + return dest; +}