Turn copier::entry into a value_reference so what_space works on it.

copier::entry is used as a value_reference when an attr_value has a
dangling reference to a DIE not yet built in the output. So make sure
its type matches that usage.

diff --git a/libdw/c++/dwarf_output b/libdw/c++/dwarf_output
index d985253593ba7d1ef00aca260e049b44ab7b068b..970d991a98d23687aaef0148b8aa83f307590372 100644 (file)
--- a/libdw/c++/dwarf_output
+++ b/libdw/c++/dwarf_output
@@ -1511,7 +1511,7 @@ namespace elfutils
        built in the output has one of these in place of a value_reference.
        These all live in the _m_entries map, one per input-side DIE.  */
     struct entry
-      : public value::value_dispatch
+      : public value::value_reference
     {
       ::Dwarf_Off _m_offset; // For debugging and statistics only.
       ::Dwarf_Off _m_cost;   // For statistics only.