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-rw-r--r--debug/printf_chk.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/debug/printf_chk.c b/debug/printf_chk.c
new file mode 100644
index 0000000000..d2b387323d
--- /dev/null
+++ b/debug/printf_chk.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
+ 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 <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+
+
+/* Write formatted output to stdout from the format string FORMAT. */
+int
+__printf_chk (int flag, const char *format, ...)
+{
+ va_list ap;
+ int done;
+
+ _IO_acquire_lock (stdout);
+ if (flag > 0)
+ stdout->_flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ va_start (ap, format);
+ done = vfprintf (stdout, format, ap);
+ va_end (ap);
+
+ if (flag > 0)
+ stdout->_flags2 &= ~_IO_FLAGS2_CHECK_PERCENT_N;
+ _IO_release_lock (stdout);
+
+ return done;
+}