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-rw-r--r--gcc/tree.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree.h b/gcc/tree.h
index fd8a5596488..856a18d517e 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -19,6 +19,9 @@ along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
+#ifndef GCC_TREE_H
+#define GCC_TREE_H
+
#include "machmode.h"
#include "version.h"
#include "location.h"
@@ -3098,3 +3101,5 @@ extern const char *dump_flag_name PARAMS ((enum tree_dump_index));
extern void fancy_abort PARAMS ((const char *, int, const char *))
ATTRIBUTE_NORETURN;
#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
+
+#endif /* GCC_TREE_H */