re PR c++/39153 (virtual default dtor not defined)

        PR c++/39153
        * decl2.c (cp_write_global_declarations):
        Check DECL_DEFAULTED_FN, not DECL_ARTIFICIAL.

From-SVN: r144119

gcc/cp/ChangeLog

 2009-02-11  Jason Merrill  <jason@redhat.com>
 
+	PR c++/39153
+	* decl2.c (cp_write_global_declarations): 
+	Check DECL_DEFAULTED_FN, not DECL_ARTIFICIAL.
+
 	PR c++/30111
 	* init.c (build_value_init_noctor): Split out from...
 	(build_value_init): ...here.

gcc/cp/decl2.c

@@ -3487,7 +3487,7 @@ cp_write_global_declarations (void)
       for (i = 0; VEC_iterate (tree, deferred_fns, i, decl); ++i)
 	{
 	  /* Does it need synthesizing?  */
-	  if (DECL_ARTIFICIAL (decl) && ! DECL_INITIAL (decl)
+	  if (DECL_DEFAULTED_FN (decl) && ! DECL_INITIAL (decl)
 	      && (! DECL_REALLY_EXTERN (decl) || possibly_inlined_p (decl)))
 	    {
 	      /* Even though we're already at the top-level, we push

gcc/testsuite/ChangeLog

 2009-02-11  Jason Merrill  <jason@redhat.com>
 
+	PR c++/39153
+	* g++.dg/cpp0x/defaulted9.C: New test.
+
 	PR c++/30111
 	* g++.dg/init/value7.C: New test.
 

gcc/testsuite/g++.dg/cpp0x/defaulted9.C

+// PR c++/39153
+
+struct _Impl_base
+{
+  _Impl_base() = default;
+  virtual ~_Impl_base() = default;
+};
+
+template<typename _Tp>
+class _Impl : public _Impl_base
+{ };
+
+int main()
+{
+  _Impl<int> i;
+  return 0;
+}