strcat-chk.c revision 1.1.1.1.8.2
1 1.1.1.1.8.2 tls /* Checking strcat. 2 1.1.1.1.8.2 tls Copyright (C) 1991, 1997, 2003, 2004, 2005, 2009 Free Software Foundation, Inc. 3 1.1.1.1.8.2 tls 4 1.1.1.1.8.2 tls This file is part of GCC. 5 1.1.1.1.8.2 tls 6 1.1.1.1.8.2 tls GCC is free software; you can redistribute it and/or modify it under 7 1.1.1.1.8.2 tls the terms of the GNU General Public License as published by the Free 8 1.1.1.1.8.2 tls Software Foundation; either version 3, or (at your option) any later 9 1.1.1.1.8.2 tls version. 10 1.1.1.1.8.2 tls 11 1.1.1.1.8.2 tls In addition to the permissions in the GNU General Public License, the 12 1.1.1.1.8.2 tls Free Software Foundation gives you unlimited permission to link the 13 1.1.1.1.8.2 tls compiled version of this file into combinations with other programs, 14 1.1.1.1.8.2 tls and to distribute those combinations without any restriction coming 15 1.1.1.1.8.2 tls from the use of this file. (The General Public License restrictions 16 1.1.1.1.8.2 tls do apply in other respects; for example, they cover modification of 17 1.1.1.1.8.2 tls the file, and distribution when not linked into a combine 18 1.1.1.1.8.2 tls executable.) 19 1.1.1.1.8.2 tls 20 1.1.1.1.8.2 tls GCC is distributed in the hope that it will be useful, but WITHOUT ANY 21 1.1.1.1.8.2 tls WARRANTY; without even the implied warranty of MERCHANTABILITY or 22 1.1.1.1.8.2 tls FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 23 1.1.1.1.8.2 tls for more details. 24 1.1.1.1.8.2 tls 25 1.1.1.1.8.2 tls Under Section 7 of GPL version 3, you are granted additional 26 1.1.1.1.8.2 tls permissions described in the GCC Runtime Library Exception, version 27 1.1.1.1.8.2 tls 3.1, as published by the Free Software Foundation. 28 1.1.1.1.8.2 tls 29 1.1.1.1.8.2 tls You should have received a copy of the GNU General Public License and 30 1.1.1.1.8.2 tls a copy of the GCC Runtime Library Exception along with this program; 31 1.1.1.1.8.2 tls see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 32 1.1.1.1.8.2 tls <http://www.gnu.org/licenses/>. */ 33 1.1.1.1.8.2 tls 34 1.1.1.1.8.2 tls 35 1.1.1.1.8.2 tls #include "config.h" 36 1.1.1.1.8.2 tls #include <ssp/ssp.h> 37 1.1.1.1.8.2 tls #ifdef HAVE_STRING_H 38 1.1.1.1.8.2 tls # include <string.h> 39 1.1.1.1.8.2 tls #endif 40 1.1.1.1.8.2 tls 41 1.1.1.1.8.2 tls extern void __chk_fail (void) __attribute__((__noreturn__)); 42 1.1.1.1.8.2 tls 43 1.1.1.1.8.2 tls char * 44 1.1.1.1.8.2 tls __strcat_chk (char *__restrict__ dest, const char *__restrict__ src, 45 1.1.1.1.8.2 tls size_t slen) 46 1.1.1.1.8.2 tls { 47 1.1.1.1.8.2 tls char *s1 = dest; 48 1.1.1.1.8.2 tls const char *s2 = src; 49 1.1.1.1.8.2 tls char c; 50 1.1.1.1.8.2 tls 51 1.1.1.1.8.2 tls do 52 1.1.1.1.8.2 tls { 53 1.1.1.1.8.2 tls if (slen-- == 0) 54 1.1.1.1.8.2 tls __chk_fail (); 55 1.1.1.1.8.2 tls c = *s1++; 56 1.1.1.1.8.2 tls } 57 1.1.1.1.8.2 tls while (c != '\0'); 58 1.1.1.1.8.2 tls 59 1.1.1.1.8.2 tls ++slen; 60 1.1.1.1.8.2 tls s1 -= 2; 61 1.1.1.1.8.2 tls 62 1.1.1.1.8.2 tls do 63 1.1.1.1.8.2 tls { 64 1.1.1.1.8.2 tls if (slen-- == 0) 65 1.1.1.1.8.2 tls __chk_fail (); 66 1.1.1.1.8.2 tls c = *s2++; 67 1.1.1.1.8.2 tls *++s1 = c; 68 1.1.1.1.8.2 tls } 69 1.1.1.1.8.2 tls while (c != '\0'); 70 1.1.1.1.8.2 tls 71 1.1.1.1.8.2 tls return dest; 72 1.1.1.1.8.2 tls } 73
Indexes created Thu Apr 09 00:23:28 UTC 2026