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-rw-r--r--REORG.TODO/debug/strcat_chk.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/REORG.TODO/debug/strcat_chk.c b/REORG.TODO/debug/strcat_chk.c
new file mode 100644
index 0000000000..610c6bc358
--- /dev/null
+++ b/REORG.TODO/debug/strcat_chk.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1991-2017 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+#include <memcopy.h>
+
+
+/* Append SRC on the end of DEST. */
+char *
+__strcat_chk (char *dest, const char *src, size_t destlen)
+{
+ char *s1 = dest;
+ const char *s2 = src;
+ char c;
+
+ /* Find the end of the string. */
+ do
+ {
+ if (__glibc_unlikely (destlen-- == 0))
+ __chk_fail ();
+ 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). */
+ ++destlen;
+ s1 -= 2;
+
+ do
+ {
+ if (__glibc_unlikely (destlen-- == 0))
+ __chk_fail ();
+ c = *s2++;
+ *++s1 = c;
+ }
+ while (c != '\0');
+
+ return dest;
+}