cp-tree.h (instantiate_type_flags): New enumeration.

	* cp-tree.h (instantiate_type_flags): New enumeration.
	(instantiate_type): Change parameter.
	* class.c (instantiate_type): Adjust prototype. Adjust.
	* call.c (standard_conversion): Adjust instantiate_type call.
	(reference_binding): Likewise.
	(build_op_delete_call): Likewise.
	(convert_like_real): Likewise.
	* cvt.c (cp_convert_to_pointer): Likewise.
	(convert_to_reference): Likewise.
	* pt.c (convert_nontype_argument): Likewise.
	* typeck.c (build_binary_op): Likewise.
	(build_ptrmemfunc): Likewise.
	(convert_for_assignment): Likewise.

From-SVN: r35757

gcc/cp/ChangeLog

 2000-08-17  Nathan Sidwell  <nathan@codesourcery.com>
 
+	* cp-tree.h (instantiate_type_flags): New enumeration.
+	(instantiate_type): Change parameter.
+	* class.c (instantiate_type): Adjust prototype. Adjust.
+	* call.c (standard_conversion): Adjust instantiate_type call.
+	(reference_binding): Likewise.
+	(build_op_delete_call): Likewise.
+	(convert_like_real): Likewise.
+	* cvt.c (cp_convert_to_pointer): Likewise.
+	(convert_to_reference): Likewise.
+	* pt.c (convert_nontype_argument): Likewise.
+	* typeck.c (build_binary_op): Likewise.
+	(build_ptrmemfunc): Likewise.
+	(convert_for_assignment): Likewise.
+
+2000-08-17  Nathan Sidwell  <nathan@codesourcery.com>
+
 	* cp-tree.h (CPTR_AGGR_TAG): New global tree node.
 	(current_aggr): Define.
 	* decl.c (grokdeclarator): Make sure a friend class is an

gcc/cp/call.c

@@ -657,7 +657,7 @@ standard_conversion (to, from, expr)
   if ((TYPE_PTRFN_P (to) || TYPE_PTRMEMFUNC_P (to))
       && expr && type_unknown_p (expr))
     {
-      expr = instantiate_type (to, expr, 0);
+      expr = instantiate_type (to, expr, itf_none);
       if (expr == error_mark_node)
 	return NULL_TREE;
       from = TREE_TYPE (expr);
@@ -1043,7 +1043,7 @@ reference_binding (rto, rfrom, expr, flags)
 
   if (TREE_CODE (to) == FUNCTION_TYPE && expr && type_unknown_p (expr))
     {
-      expr = instantiate_type (to, expr, 0);
+      expr = instantiate_type (to, expr, itf_none);
       if (expr == error_mark_node)
 	return NULL_TREE;
       from = TREE_TYPE (expr);
@@ -3555,7 +3555,7 @@ build_op_delete_call (code, addr, size, flags, placement)
   if (type != TYPE_MAIN_VARIANT (type))
     addr = cp_convert (build_pointer_type (TYPE_MAIN_VARIANT (type)), addr);
 
-  fn = instantiate_type (fntype, fns, 2);
+  fn = instantiate_type (fntype, fns, itf_no_attributes);
 
   if (fn != error_mark_node)
     {
@@ -3575,7 +3575,7 @@ build_op_delete_call (code, addr, size, flags, placement)
 			tree_cons (NULL_TREE, sizetype, void_list_node));
   fntype = build_function_type (void_type_node, argtypes);
 
-  fn = instantiate_type (fntype, fns, 2);
+  fn = instantiate_type (fntype, fns, itf_no_attributes);
 
   if (fn != error_mark_node)
     {
@@ -3694,7 +3694,7 @@ convert_like_real (convs, expr, fn, argnum, inner)
       }
     case IDENTITY_CONV:
       if (type_unknown_p (expr))
-	expr = instantiate_type (TREE_TYPE (convs), expr, 1);
+	expr = instantiate_type (TREE_TYPE (convs), expr, itf_complain);
       return expr;
     case AMBIG_CONV:
       /* Call build_user_type_conversion again for the error.  */

gcc/cp/class.c

@@ -5977,24 +5977,22 @@ resolve_address_of_overloaded_function (target_type,
 
 /* This function will instantiate the type of the expression given in
    RHS to match the type of LHSTYPE.  If errors exist, then return
-   error_mark_node.  We only complain is COMPLAIN is set.  If we are
-   not complaining, never modify rhs, as overload resolution wants to
-   try many possible instantiations, in hopes that at least one will
-   work.
-
-   FLAGS is a bitmask, as we see at the top of the function.
-
+   error_mark_node. FLAGS is a bit mask.  If ITF_COMPLAIN is set, then
+   we complain on errors.  If we are not complaining, never modify rhs,
+   as overload resolution wants to try many possible instantiations, in
+   the hope that at least one will work.
+   
    For non-recursive calls, LHSTYPE should be a function, pointer to
    function, or a pointer to member function.  */
 
 tree
 instantiate_type (lhstype, rhs, flags)
      tree lhstype, rhs;
-     int flags;
+     enum instantiate_type_flags flags;
 {
-  int complain = (flags & 1);
-  int strict = (flags & 2) ? COMPARE_NO_ATTRIBUTES : COMPARE_STRICT;
-  tree r;
+  int complain = (flags & itf_complain);
+  int strict = (flags & itf_no_attributes)
+               ? COMPARE_NO_ATTRIBUTES : COMPARE_STRICT;
 
   if (TREE_CODE (lhstype) == UNKNOWN_TYPE)
     {

gcc/cp/cp-tree.h

@@ -3204,6 +3204,13 @@ typedef enum special_function_kind {
   sfk_conversion           /* A conversion operator.  */
 } special_function_kind;
 
+/* Bitmask flags to pass to instantiate_type.  */
+typedef enum instantiate_type_flags {
+  itf_none = 0,               /* nothing special */
+  itf_complain = 1 << 0,      /* complain about errors */
+  itf_no_attributes = 1 << 1  /* ignore attributes on comparisons */
+} instantiate_type_flags;
+
 /* Non-zero means that if a label exists, and no other identifier
    applies, use the value of the label.  */
 extern int flag_labels_ok;
@@ -3822,7 +3829,7 @@ extern void push_nested_class			PARAMS ((tree, int));
 extern void pop_nested_class			PARAMS ((void));
 extern void push_lang_context			PARAMS ((tree));
 extern void pop_lang_context			PARAMS ((void));
-extern tree instantiate_type			PARAMS ((tree, tree, int));
+extern tree instantiate_type			PARAMS ((tree, tree, enum instantiate_type_flags));
 extern void print_class_statistics		PARAMS ((void));
 extern int first_vfun_index                     PARAMS ((tree));
 extern void build_self_reference		PARAMS ((void));

gcc/cp/cvt.c

@@ -267,7 +267,7 @@ cp_convert_to_pointer (type, expr)
     }
 
   if (type_unknown_p (expr))
-    return instantiate_type (type, expr, 1);
+    return instantiate_type (type, expr, itf_no_attributes);
 
   cp_error ("cannot convert `%E' from type `%T' to type `%T'",
 	    expr, intype, type);
@@ -464,7 +464,8 @@ convert_to_reference (reftype, expr, convtype, flags, decl)
   if (TREE_CODE (type) == FUNCTION_TYPE && intype == unknown_type_node)
     {
       expr = instantiate_type (type, expr, 
-			       (flags & LOOKUP_COMPLAIN) != 0);
+			       (flags & LOOKUP_COMPLAIN)
+	                       ? itf_complain : itf_none);
       if (expr == error_mark_node)
 	return error_mark_node;
 

gcc/cp/pt.c

@@ -2911,7 +2911,7 @@ convert_nontype_argument (type, expr)
 	    else
 	      fns = expr;
 
-	    fn = instantiate_type (type_pointed_to, fns, 0);
+	    fn = instantiate_type (type_pointed_to, fns, itf_none);
 
 	    if (fn == error_mark_node)
 	      return error_mark_node;
@@ -2976,7 +2976,7 @@ convert_nontype_argument (type, expr)
 	       set (_over.over_).  */
 	    tree fn;
 
-	    fn = instantiate_type (type_referred_to, expr, 0);
+	    fn = instantiate_type (type_referred_to, expr, itf_none);
 
 	    if (fn == error_mark_node)
 	      return error_mark_node;
@@ -3051,7 +3051,7 @@ convert_nontype_argument (type, expr)
 	if (TREE_CODE (expr) != ADDR_EXPR)
 	  return error_mark_node;
 
-	expr = instantiate_type (type, expr, 0);
+	expr = instantiate_type (type, expr, itf_none);
 	
 	if (expr == error_mark_node)
 	  return error_mark_node;

gcc/cp/typeck.c

@@ -3344,7 +3344,7 @@ build_binary_op (code, orig_op0, orig_op1, convert_p)
   /* DTRT if one side is an overloaded function, but complain about it.  */
   if (type_unknown_p (op0))
     {
-      tree t = instantiate_type (TREE_TYPE (op1), op0, 0);
+      tree t = instantiate_type (TREE_TYPE (op1), op0, itf_none);
       if (t != error_mark_node)
 	{
 	  cp_pedwarn ("assuming cast to type `%T' from overloaded function",
@@ -3354,7 +3354,7 @@ build_binary_op (code, orig_op0, orig_op1, convert_p)
     }
   if (type_unknown_p (op1))
     {
-      tree t = instantiate_type (TREE_TYPE (op0), op1, 0);
+      tree t = instantiate_type (TREE_TYPE (op0), op1, itf_none);
       if (t != error_mark_node)
 	{
 	  cp_pedwarn ("assuming cast to type `%T' from overloaded function",
@@ -6199,7 +6199,7 @@ build_ptrmemfunc (type, pfn, force)
     }
 
   if (type_unknown_p (pfn))
-    return instantiate_type (type, pfn, 1);
+    return instantiate_type (type, pfn, itf_complain);
 
   fn = TREE_OPERAND (pfn, 0);
   my_friendly_assert (TREE_CODE (fn) == FUNCTION_DECL, 0);
@@ -6464,7 +6464,7 @@ convert_for_assignment (type, rhs, errtype, fndecl, parmnum)
 	     overloaded function.  Call instantiate_type to get error
 	     messages.  */
 	  if (rhstype == unknown_type_node)
-	    instantiate_type (type, rhs, 1);
+	    instantiate_type (type, rhs, itf_complain);
 	  else if (fndecl)
 	    cp_error ("cannot convert `%T' to `%T' for argument `%P' to `%D'",
 		      rhstype, type, parmnum, fndecl);