re PR c++/48450 ([C++0x][SFINAE] Hard errors with static_cast expressions)

PR c++/48450
	* tree.c (build_cplus_new, build_aggr_init_expr): Take complain.
	(bot_manip): Adjust.
	* cp-tree.h: Adjust.
	* call.c (convert_like_real, build_cxx_call): Adjust.
	(perform_direct_initialization_if_possible): Adjust.
	* cvt.c (ocp_convert): Adjust.
	* init.c (build_value_init): Adjust.
	* semantics.c (maybe_add_lambda_conv_op): Adjust.
	* typeck.c (unary_complex_lvalue, cp_build_modify_expr): Adjust.
	* typeck2.c (build_functional_cast): Adjust.

From-SVN: r172143

gcc/cp/ChangeLog

@@ -1,5 +1,17 @@
 2011-04-07  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48450
+	* tree.c (build_cplus_new, build_aggr_init_expr): Take complain.
+	(bot_manip): Adjust.
+	* cp-tree.h: Adjust.
+	* call.c (convert_like_real, build_cxx_call): Adjust.
+	(perform_direct_initialization_if_possible): Adjust.
+	* cvt.c (ocp_convert): Adjust.
+	* init.c (build_value_init): Adjust.
+	* semantics.c (maybe_add_lambda_conv_op): Adjust.
+	* typeck.c (unary_complex_lvalue, cp_build_modify_expr): Adjust.
+	* typeck2.c (build_functional_cast): Adjust.
+
 	* init.c (build_value_init_noctor): Handle REFERENCE_TYPE at top
 	level.
 	(perform_member_init): Not here.

gcc/cp/call.c

@@ -5414,7 +5414,7 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
 	   we need to build up a TARGET_EXPR.  */
 	if (DECL_CONSTRUCTOR_P (convfn))
 	  {
-	    expr = build_cplus_new (totype, expr);
+	    expr = build_cplus_new (totype, expr, complain);
 
 	    /* Remember that this was list-initialization.  */
 	    if (convs->check_narrowing)
@@ -5559,7 +5559,7 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
 	  else if (diag_kind == DK_ERROR)
 	    return error_mark_node;
 	}
-      return build_cplus_new (totype, expr);
+      return build_cplus_new (totype, expr, complain);
 
     case ck_ref_bind:
       {
@@ -6476,7 +6476,7 @@ build_cxx_call (tree fn, int nargs, tree *argarray)
     return error_mark_node;
 
   if (MAYBE_CLASS_TYPE_P (TREE_TYPE (fn)))
-    fn = build_cplus_new (TREE_TYPE (fn), fn);
+    fn = build_cplus_new (TREE_TYPE (fn), fn, tf_warning_or_error);
   return convert_from_reference (fn);
 }
 
@@ -8119,7 +8119,7 @@ perform_direct_initialization_if_possible (tree type,
       expr = build_special_member_call (NULL_TREE, complete_ctor_identifier,
 					&args, type, LOOKUP_NORMAL, complain);
       release_tree_vector (args);
-      return build_cplus_new (type, expr);
+      return build_cplus_new (type, expr, complain);
     }
 
   /* Get the high-water mark for the CONVERSION_OBSTACK.  */

gcc/cp/cp-tree.h

@@ -5395,8 +5395,8 @@ extern tree build_min				(enum tree_code, tree, ...);
 extern tree build_min_nt			(enum tree_code, ...);
 extern tree build_min_non_dep			(enum tree_code, tree, ...);
 extern tree build_min_non_dep_call_vec		(tree, tree, VEC(tree,gc) *);
-extern tree build_cplus_new			(tree, tree);
+extern tree build_cplus_new			(tree, tree, tsubst_flags_t);
-extern tree build_aggr_init_expr		(tree, tree);
+extern tree build_aggr_init_expr		(tree, tree, tsubst_flags_t);
 extern tree get_target_expr			(tree);
 extern tree build_cplus_array_type		(tree, tree);
 extern tree build_array_of_n_type		(tree, int);

gcc/cp/cvt.c

@@ -819,7 +819,7 @@ ocp_convert (tree type, tree expr, int convtype, int flags)
 	  release_tree_vector (ctor_vec);
 	}
       if (ctor)
-	return build_cplus_new (type, ctor);
+	return build_cplus_new (type, ctor, tf_warning_or_error);
     }
 
   if (flags & LOOKUP_COMPLAIN)

gcc/cp/init.c

@@ -342,7 +342,8 @@ build_value_init (tree type, tsubst_flags_t complain)
 	  (type,
 	   build_special_member_call (NULL_TREE, complete_ctor_identifier,
 				      NULL, type, LOOKUP_NORMAL,
-				      complain));
+				      complain),
+	   complain);
       else if (TREE_CODE (type) != UNION_TYPE && TYPE_NEEDS_CONSTRUCTING (type))
 	{
 	  /* This is a class that needs constructing, but doesn't have
@@ -354,7 +355,7 @@ build_value_init (tree type, tsubst_flags_t complain)
 	     NULL, type, LOOKUP_NORMAL, complain);
 	  if (ctor != error_mark_node)
 	    {
-	      ctor = build_aggr_init_expr (type, ctor);
+	      ctor = build_aggr_init_expr (type, ctor, complain);
 	      AGGR_INIT_ZERO_FIRST (ctor) = 1;
 	    }
 	  return ctor;

gcc/cp/semantics.c

@@ -8429,7 +8429,7 @@ maybe_add_lambda_conv_op (tree type)
 		       VEC_address (tree, argvec));
   CALL_FROM_THUNK_P (call) = 1;
   if (MAYBE_CLASS_TYPE_P (TREE_TYPE (call)))
-    call = build_cplus_new (TREE_TYPE (call), call);
+    call = build_cplus_new (TREE_TYPE (call), call, tf_warning_or_error);
   call = convert_from_reference (call);
   finish_return_stmt (call);
 

gcc/cp/tree.c

@@ -373,7 +373,7 @@ build_aggr_init_array (tree return_type, tree fn, tree slot, int nargs,
    callable.  */
 
 tree
-build_aggr_init_expr (tree type, tree init)
+build_aggr_init_expr (tree type, tree init, tsubst_flags_t complain)
 {
   tree fn;
   tree slot;
@@ -382,7 +382,9 @@ build_aggr_init_expr (tree type, tree init)
 
   /* Make sure that we're not trying to create an instance of an
      abstract class.  */
-  abstract_virtuals_error (NULL_TREE, type);
+  if (abstract_virtuals_error_sfinae (NULL_TREE, type, complain)
+      && !(complain & tf_error))
+    return error_mark_node;
 
   if (TREE_CODE (init) == CALL_EXPR)
     fn = CALL_EXPR_FN (init);
@@ -437,9 +439,9 @@ build_aggr_init_expr (tree type, tree init)
    and language-specific expression expanders.  */
 
 tree
-build_cplus_new (tree type, tree init)
+build_cplus_new (tree type, tree init, tsubst_flags_t complain)
 {
-  tree rval = build_aggr_init_expr (type, init);
+  tree rval = build_aggr_init_expr (type, init, complain);
   tree slot;
 
   if (TREE_CODE (rval) == AGGR_INIT_EXPR)
@@ -1805,7 +1807,8 @@ bot_manip (tree* tp, int* walk_subtrees, void* data)
       tree u;
 
       if (TREE_CODE (TREE_OPERAND (t, 1)) == AGGR_INIT_EXPR)
-	u = build_cplus_new (TREE_TYPE (t), TREE_OPERAND (t, 1));
+	u = build_cplus_new (TREE_TYPE (t), TREE_OPERAND (t, 1),
+			     tf_warning_or_error);
       else
 	u = build_target_expr_with_type (TREE_OPERAND (t, 1), TREE_TYPE (t));
 

gcc/cp/typeck.c

@@ -5320,7 +5320,7 @@ unary_complex_lvalue (enum tree_code code, tree arg)
 	if (TREE_CODE (arg) == SAVE_EXPR)
 	  targ = arg;
 	else
-	  targ = build_cplus_new (TREE_TYPE (arg), arg);
+	  targ = build_cplus_new (TREE_TYPE (arg), arg, tf_warning_or_error);
 	return build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (arg)), targ);
       }
 
@@ -6742,7 +6742,7 @@ cp_build_modify_expr (tree lhs, enum tree_code modifycode, tree rhs,
     {
       if (TREE_CODE (newrhs) == CALL_EXPR
 	  && TYPE_NEEDS_CONSTRUCTING (lhstype))
-	newrhs = build_cplus_new (lhstype, newrhs);
+	newrhs = build_cplus_new (lhstype, newrhs, complain);
 
       /* Can't initialize directly from a TARGET_EXPR, since that would
 	 cause the lhs to be constructed twice, and possibly result in

gcc/cp/typeck2.c

@@ -1614,7 +1614,7 @@ build_functional_cast (tree exp, tree parms, tsubst_flags_t complain)
   if (exp == error_mark_node)
     return error_mark_node;
 
-  return build_cplus_new (type, exp);
+  return build_cplus_new (type, exp, complain);
 }