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-rw-r--r--ace/Signal.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/ace/Signal.h b/ace/Signal.h
index aef142e6360..541b78e81e9 100644
--- a/ace/Signal.h
+++ b/ace/Signal.h
@@ -20,6 +20,10 @@
#include "ace/Synch.h"
#include "ace/Event_Handler.h"
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+#pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
// This worksaround a horrible bug with HP/UX C++...
typedef struct sigaction ACE_SIGACTION;