Fix possible bug when no args have been provided to the executable

[deliverable/binutils-gdb.git] / libiberty / floatformat.c

diff --git a/libiberty/floatformat.c b/libiberty/floatformat.c
index 789fa05777dd3dc36b799e17cad1b91a228062ef..7e7c4165ecaef203c06d81e54e7dbd4c16b0a72b 100644 (file)
--- a/libiberty/floatformat.c
+++ b/libiberty/floatformat.c
@@ -1,6 +1,5 @@
 /* IEEE floating point support routines, for GDB, the GNU Debugger.
-   Copyright 1991, 1994, 1999, 2000, 2003, 2005, 2006, 2010, 2012
-   Free Software Foundation, Inc.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -19,7 +18,9 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 /* This is needed to pick up the NAN macro on some systems.  */
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"