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-rw-r--r--crypto/pqueue/pq_compat.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/pqueue/pq_compat.h b/crypto/pqueue/pq_compat.h
index fd36578..7b2c327 100644
--- a/crypto/pqueue/pq_compat.h
+++ b/crypto/pqueue/pq_compat.h
@@ -57,6 +57,9 @@
*
*/
+#ifndef HEADER_PQ_COMPAT_H
+#define HEADER_PQ_COMPAT_H
+
#include <openssl/opensslconf.h>
#include <openssl/bn.h>
@@ -145,3 +148,5 @@
*(x) |= mask; \
} while(0)
#endif /* OPENSSL_SYS_VMS */
+
+#endif
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