re PR c++/49507 (ICE because of defaulted template destructor)

	PR c++/49507
	* decl2.c (mark_used): Don't call synthesize_method for
	functions defaulted outside the class.

From-SVN: r175342

gcc/cp/ChangeLog

 2011-06-23  Jason Merrill  <jason@redhat.com>
 
+	PR c++/49507
+	* decl2.c (mark_used): Don't call synthesize_method for
+	functions defaulted outside the class.
+
 	* optimize.c (maybe_clone_body): Set linkage flags before
 	cgraph_same_body_alias.
 

gcc/cp/decl2.c

@@ -4297,6 +4297,9 @@ mark_used (tree decl)
   if (TREE_CODE (decl) == FUNCTION_DECL
       && DECL_NONSTATIC_MEMBER_FUNCTION_P (decl)
       && DECL_DEFAULTED_FN (decl)
+      /* A function defaulted outside the class is synthesized either by
+	 cp_finish_decl or instantiate_decl.  */
+      && !DECL_DEFAULTED_OUTSIDE_CLASS_P (decl)
       && ! DECL_INITIAL (decl))
     {
       /* Remember the current location for a function we will end up

gcc/testsuite/ChangeLog

 2011-06-23  Jason Merrill  <jason@redhat.com>
 
+	PR c++/49507
+	* g++.dg/cpp0x/defaulted30.C: New.
+
 	PR c++/49440
 	* g++.dg/rtti/anon-ns1.C: New.
 

gcc/testsuite/g++.dg/cpp0x/defaulted30.C

+// PR c++/49507
+// { dg-options -std=c++0x }
+
+template<typename T>
+struct ConcretePoolKey
+{
+        virtual ~ConcretePoolKey();
+};
+
+template<typename T>
+ConcretePoolKey<T>::~ConcretePoolKey() = default;
+
+int main()
+{
+        ConcretePoolKey<int> foo;
+}