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diff --git a/lib/isc/include/isc/formatcheck.h b/lib/isc/include/isc/formatcheck.h
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+/*
+ * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001 Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: formatcheck.h,v 1.13 2007/06/19 23:47:18 tbox Exp $ */
+
+#ifndef ISC_FORMATCHECK_H
+#define ISC_FORMATCHECK_H 1
+
+/*! \file isc/formatcheck.h */
+
+/*%
+ * ISC_FORMAT_PRINTF().
+ *
+ * \li fmt is the location of the format string parameter.
+ * \li args is the location of the first argument (or 0 for no argument checking).
+ *
+ * Note:
+ * \li The first parameter is 1, not 0.
+ */
+#ifdef __GNUC__
+#define ISC_FORMAT_PRINTF(fmt, args) __attribute__((__format__(__printf__, fmt, args)))
+#else
+#define ISC_FORMAT_PRINTF(fmt, args)
+#endif
+
+#endif /* ISC_FORMATCHECK_H */