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-rw-r--r--include/sha1.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sha1.h b/include/sha1.h
index e476456a9bd..5b4dc5d46ed 100644
--- a/include/sha1.h
+++ b/include/sha1.h
@@ -1,3 +1,6 @@
+#ifndef SHA1_INCLUDED
+#define SHA1_INCLUDED
+
/* Copyright (C) 2002, 2006 MySQL AB
This program is free software; you can redistribute it and/or modify
@@ -64,3 +67,5 @@ int mysql_sha1_input(SHA1_CONTEXT*, const uint8 *, unsigned int);
int mysql_sha1_result(SHA1_CONTEXT* , uint8 Message_Digest[SHA1_HASH_SIZE]);
C_MODE_END
+
+#endif /* SHA__INCLUDED */