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-rw-r--r--stdlib/exit.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/stdlib/exit.h b/stdlib/exit.h
index 27120aeaa1..dcaa85a442 100644
--- a/stdlib/exit.h
+++ b/stdlib/exit.h
@@ -17,6 +17,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef	_EXIT_H
+#define _EXIT_H 1
 
 struct exit_function
   {