re PR c++/51620 ([c++0x] [4.6/4.7 Regression] ICE with private destructor)

	PR c++/51620
	* class.c (build_vtbl_initializer): Use __cxa_deleted_virtual.

From-SVN: r183155

gcc/cp/ChangeLog

+2012-01-13  Jason Merrill  <jason@redhat.com>
+
+	PR c++/51620
+	* class.c (build_vtbl_initializer): Use __cxa_deleted_virtual.
+
 2012-01-12  Jason Merrill  <jason@redhat.com>
 
 	PR c++/51714

gcc/cp/class.c

@@ -8352,6 +8352,18 @@ build_vtbl_initializer (tree binfo,
 		  init = abort_fndecl_addr;
 		}
 	    }
+	  /* Likewise for deleted virtuals.  */
+	  else if (DECL_DELETED_FN (fn_original))
+	    {
+	      fn = get_identifier ("__cxa_deleted_virtual");
+	      if (!get_global_value_if_present (fn, &fn))
+		fn = push_library_fn (fn, (build_function_type_list
+					   (void_type_node, NULL_TREE)),
+				      NULL_TREE);
+	      if (!TARGET_VTABLE_USES_DESCRIPTORS)
+		init = fold_convert (vfunc_ptr_type_node,
+				     build_fold_addr_expr (fn));
+	    }
 	  else
 	    {
 	      if (!integer_zerop (delta) || vcall_index)

gcc/testsuite/ChangeLog

+2012-01-13  Jason Merrill  <jason@redhat.com>
+
+	PR c++/51620
+	* g++.dg/cpp0x/defaulted34.C: New.
+	* g++.dg/template/virtual3.C: New.
+
 2012-01-13  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/8081

gcc/testsuite/g++.dg/cpp0x/defaulted34.C

+// { dg-options -std=c++0x }
+// { dg-final { scan-assembler "__cxa_deleted_virtual" } }
+
+struct A
+{
+  virtual void f();
+  virtual ~A() = delete;
+};
+
+void A::f() {}

gcc/testsuite/g++.dg/template/virtual3.C

+// PR c++/51620
+
+template<int> class A
+{
+  virtual ~A();			// { dg-error "non-deleted|private" }
+};
+
+struct B : A<0>, A<1>		// { dg-error "deleted|context" }
+{
+  B() {}			// { dg-error "context" }
+};