--- old/src/share/vm/gc/g1/g1BlockOffsetTable.hpp	2017-02-23 10:24:46.314063967 +0100
+++ new/src/share/vm/gc/g1/g1BlockOffsetTable.hpp	2017-02-23 10:24:46.174058488 +0100
@@ -227,7 +227,7 @@
   }
 
   void set_for_starts_humongous(HeapWord* obj_top, size_t fill_size);
-  void set_object_can_span(bool can_span) PRODUCT_RETURN;
+  void set_object_can_span(bool can_span) NOT_DEBUG_RETURN;
 
   void print_on(outputStream* out) PRODUCT_RETURN;
 };