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-rw-r--r--include/my_bit.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/my_bit.h b/include/my_bit.h
index 2e464e89049..5cbf4f8b83e 100644
--- a/include/my_bit.h
+++ b/include/my_bit.h
@@ -1,3 +1,6 @@
+#ifndef MY_BIT_INCLUDED
+#define MY_BIT_INCLUDED
+
/*
Some useful bit functions
*/
@@ -107,3 +110,5 @@ extern uint my_count_bits(ulonglong v);
extern uint my_count_bits_ushort(ushort v);
#endif /* HAVE_INLINE */
C_MODE_END
+
+#endif /* MY_BIT_INCLUDED */