Not all implementations of wxMDIChildFrame derive from wxFrame

[wxWidgets.git] / include / wx / hash.h

diff --git a/include/wx/hash.h b/include/wx/hash.h
index d9749ef6ad719113b96581fe451e1a7d8e4d135c..247a844637e17be3e90fd919ad516f6c64137ec6 100644 (file)
--- a/include/wx/hash.h
+++ b/include/wx/hash.h
@@ -111,6 +111,10 @@ union wxHashKeyValue
     wxChar *string;
 };
 
+// for some compilers (AIX xlC), defining it as friend inside the class is not
+// enough, so provide a real forward declaration
+class WXDLLIMPEXP_BASE wxHashTableBase;
+
 class WXDLLIMPEXP_BASE wxHashTableBase_Node
 {
     friend class WXDLLIMPEXP_BASE wxHashTableBase;