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-rw-r--r--debug/mbstowcs_chk.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/debug/mbstowcs_chk.c b/debug/mbstowcs_chk.c
new file mode 100644
index 0000000000..2c1c3bb2c1
--- /dev/null
+++ b/debug/mbstowcs_chk.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 2005 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <locale.h>
+#include <string.h>
+#include <wchar.h>
+
+
+size_t
+__mbstowcs_chk (wchar_t *dst, const char **src, size_t len, size_t dstlen)
+{
+ if (__builtin_expect (dstlen < len * sizeof (wchar_t), 0))
+ __chk_fail ();
+
+ mbstate_t state;
+
+ memset (&state, '\0', sizeof state);
+ /* Return how many we wrote (or maybe an error). */
+ return __mbsrtowcs (dst, src, len, &state);
+}