cp-tree.h (tsubst_flags): Remove tf_no_access_control.

	* cp-tree.h (tsubst_flags): Remove tf_no_access_control.
	* call.c (standard_conversion): Don't set it.
	* class.c (resolve_address_of_overloaded_function): Don't check it.
	* decl.c (check_default_argument): Call
	perform_implicit_conversion_flags.

From-SVN: r189850

gcc/cp/ChangeLog

 2012-07-25  Jason Merrill  <jason@redhat.com>
 
+	* cp-tree.h (tsubst_flags): Remove tf_no_access_control.
+	* call.c (standard_conversion): Don't set it.
+	* class.c (resolve_address_of_overloaded_function): Don't check it.
+	* decl.c (check_default_argument): Call
+	perform_implicit_conversion_flags.
+
 	* pt.c (print_candidates_1): Use inform instead of error.
 
 2012-07-24  Paolo Carlini  <paolo.carlini@oracle.com>

gcc/cp/call.c

@@ -1095,8 +1095,6 @@ standard_conversion (tree to, tree from, tree expr, bool c_cast_p,
       && expr && type_unknown_p (expr))
     {
       tsubst_flags_t tflags = tf_conv;
-      if (!(flags & LOOKUP_PROTECT))
-	tflags |= tf_no_access_control;
       expr = instantiate_type (to, expr, tflags);
       if (expr == error_mark_node)
 	return NULL;

gcc/cp/class.c

@@ -6878,9 +6878,8 @@ pop_lang_context (void)
 
    If OVERLOAD is for one or more member functions, then ACCESS_PATH
    is the base path used to reference those member functions.  If
-   TF_NO_ACCESS_CONTROL is not set in FLAGS, and the address is
-   resolved to a member function, access checks will be performed and
-   errors issued if appropriate.  */
+   the address is resolved to a member function, access checks will be
+   performed and errors issued if appropriate.  */
 
 static tree
 resolve_address_of_overloaded_function (tree target_type,
@@ -7143,12 +7142,10 @@ resolve_address_of_overloaded_function (tree target_type,
   /* We could not check access to member functions when this
      expression was originally created since we did not know at that
      time to which function the expression referred.  */
-  if (!(flags & tf_no_access_control) 
-      && DECL_FUNCTION_MEMBER_P (fn))
+  if (DECL_FUNCTION_MEMBER_P (fn))
     {
       gcc_assert (access_path);
-      perform_or_defer_access_check (access_path, fn, fn,
-				     tf_warning_or_error);
+      perform_or_defer_access_check (access_path, fn, fn, flags);
     }
 
   if (TYPE_PTRFN_P (target_type) || TYPE_PTRMEMFUNC_P (target_type))

gcc/cp/cp-tree.h

@@ -4170,8 +4170,6 @@ enum tsubst_flags {
 				    conversion might be permissible,
 				    not actually performing the
 				    conversion.  */
-  tf_no_access_control = 1 << 7, /* Do not perform access checks, even
-				    when issuing other errors.   */
   tf_partial = 1 << 8,		 /* Doing initial explicit argument
 				    substitution in fn_type_unification.  */
   /* Convenient substitution flags combinations.  */

gcc/cp/decl.c

@@ -10602,19 +10602,8 @@ check_default_argument (tree decl, tree arg)
 
      A default argument expression is implicitly converted to the
      parameter type.  */
-  if (!TREE_TYPE (arg)
-      || !can_convert_arg (decl_type, TREE_TYPE (arg), arg, LOOKUP_NORMAL,
-			   tf_warning_or_error))
-    {
-      if (decl)
-	error ("default argument for %q#D has type %qT",
-	       decl, TREE_TYPE (arg));
-      else
-	error ("default argument for parameter of type %qT has type %qT",
-	       decl_type, TREE_TYPE (arg));
-
-      return error_mark_node;
-    }
+  perform_implicit_conversion_flags (decl_type, arg, tf_warning_or_error,
+				     LOOKUP_NORMAL);
 
   if (warn_zero_as_null_pointer_constant
       && c_inhibit_evaluation_warnings == 0

gcc/testsuite/g++.dg/lto/pr51992_0.C

@@ -5,6 +5,7 @@ template<typename Enum>
 class QFlags
 {
     int i;
+public:
     inline QFlags(Enum f) : i(f) {}
 };
 class QString {};

gcc/testsuite/g++.dg/overload/defarg6.C

+class A
+{
+  int i;
+  A(int i): i(i) {}		// { dg-error "private" }
+};
+
+void f (A = 1) { }		// { dg-error "context" }

gcc/testsuite/g++.dg/template/defarg6.C

@@ -8,7 +8,7 @@ enum X{ a, b, c };
 
 struct C
 {
-  static void func (X &ref = a); // { dg-error "default argument" "" }
+  static void func (X &ref = a); // { dg-error "" }
 };
 
 template <typename T>
@@ -21,5 +21,7 @@ void Foo (X & obj)
 {
   D<int>::func (obj);
 
-  D<int>::func (); // { dg-error "default argument" "" }
+  D<int>::func (); // { dg-error "" }
 }
+
+// { dg-prune-output "passing argument" }

gcc/testsuite/g++.old-deja/g++.martin/typedef2.C

@@ -3,5 +3,5 @@
 // Check implicit conversion from string constants into typedefs
 
 typedef char CHAR;
-void f2(CHAR *s="");
+void f2(CHAR *s="");		// { dg-warning "deprecated" }
 

gcc/testsuite/g++.old-deja/g++.warn/impint.C

@@ -16,9 +16,9 @@ struct X
 void foo (int);
 void wibble (int);
 void wibble (int, int);
-void punk (int = 3.5);
+void punk (int = 3.5);		// { dg-warning "" } double to int
 void rock ();
-void rock (int, int = 3.5);
+void rock (int, int = 3.5);	// { dg-warning "" } double to int
 
 void fn ()
 {