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-rw-r--r--src/sp-offset.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/sp-offset.h b/src/sp-offset.h
index 35030cfeb..75d42e443 100644
--- a/src/sp-offset.h
+++ b/src/sp-offset.h
@@ -18,7 +18,8 @@
#define SP_TYPE_OFFSET (sp_offset_get_type ())
#define SP_OFFSET(obj) ((SPOffset*)obj)
-#define SP_IS_OFFSET(obj) (obj != NULL && static_cast<const SPObject*>(obj)->typeHierarchy.count(typeid(SPOffset)))
+//#define SP_IS_OFFSET(obj) (obj != NULL && static_cast<const SPObject*>(obj)->typeHierarchy.count(typeid(SPOffset)))
+#define SP_IS_OFFSET(obj) (dynamic_cast<const SPOffset*>((SPObject*)obj))
class COffset;
class SPUseReference;