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-rw-r--r--ssl/dtls1.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index 2900d1d8ae..f85acf59d4 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -57,8 +57,14 @@
*
*/
-#ifndef HEADER_DTLS1_H
-#define HEADER_DTLS1_H
+#ifndef HEADER_DTLS1_H
+#define HEADER_DTLS1_H
+
+/* Unless _XOPEN_SOURCE_EXTENDED is defined, struct timeval will not be
+ properly defined with DEC C, at least on VMS */
+#if defined(__DECC) || defined(__DECCXX)
+#define _XOPEN_SOURCE_EXTENDED
+#endif
#include <openssl/buffer.h>
#include <openssl/pqueue.h>