1 files changed, 5 insertions, 1 deletions
diff --git a/src/post.h b/src/post.h
index c2f77b32..1e5fc569 100644
--- a/src/post.h
+++ b/src/post.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2014, John Wiegley.  All rights reserved.
+ * Copyright (c) 2003-2015, John Wiegley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -205,7 +205,11 @@ public:
   mutable optional<xdata_t> xdata_;
 
   bool has_xdata() const {
+#if BOOST_VERSION >= 105600
+    return xdata_ != NULL;
+#else
     return xdata_;
+#endif
   }
   void clear_xdata() {
     xdata_ = none;