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-rw-r--r--include/stdbool.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/stdbool.h b/include/stdbool.h
index c0d6459cc029..099549cbfbe9 100644
--- a/include/stdbool.h
+++ b/include/stdbool.h
@@ -29,6 +29,7 @@
#ifndef _STDBOOL_H_
#define _STDBOOL_H_
+#ifndef __bool_true_false_are_defined
#define __bool_true_false_are_defined 1
#ifndef __cplusplus
@@ -42,5 +43,6 @@ typedef int _Bool;
#endif
#endif /* !__cplusplus */
+#endif /* __bool_true_false_are_defined */
#endif /* !_STDBOOL_H_ */