[gcc/objc/ChangeLog]

2005-07-07  Ziemowit Laski  <zlaski@apple.com>

        * objc-act.c (objc_build_struct): Pass in an actual @interface
        instead of its name, and annotate the struct created (and all
        existing variants thereof) with the @interface.
        (objc_compare_types): Treat forward-declared ObjC classes
        as stand-alone (root) classes for purposes of type comparisons.
        (build_private_template): Move some code to objc_build_struct().

[gcc/testsuite/ChangeLog]
2005-07-07  Ziemowit Laski  <zlaski@apple.com>

        * obj-c++.dg/proto-lossage-6.mm: New.
        * objc.dg/proto-lossage-6.m: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101750 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 35 insertions, 9 deletions

diff --git a/gcc/objc/ChangeLog b/gcc/objc/ChangeLog
index 6d7b9a4d9f1..00fa28acd66 100644
--- a/gcc/objc/ChangeLog
+++ b/gcc/objc/ChangeLog
@@ -1,5 +1,14 @@
 2005-07-07  Ziemowit Laski  <zlaski@apple.com>
 
+	* objc-act.c (objc_build_struct): Pass in an actual @interface
+	instead of its name, and annotate the struct created (and all
+	existing variants thereof) with the @interface.
+	(objc_compare_types): Treat forward-declared ObjC classes
+	as stand-alone (root) classes for purposes of type comparisons.
+	(build_private_template): Move some code to objc_build_struct().
+
+2005-07-07  Ziemowit Laski  <zlaski@apple.com>
+
 	PR objc/22274
 	* objc-act.c (objc_build_string_object): For GNU-style constants,
 	use the @interface type rather than the built-in type.
diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c
index 48cf7075863..35d534368de 100644
--- a/gcc/objc/objc-act.c
+++ b/gcc/objc/objc-act.c
@@ -794,12 +794,13 @@ objc_is_class_id (tree type)
   return OBJC_TYPE_NAME (type) == objc_class_id;
 }
 
-/* Construct a C struct with tag NAME, a base struct with tag
+/* Construct a C struct with same name as CLASS, a base struct with tag
    SUPER_NAME (if any), and FIELDS indicated.  */
 
 static tree
-objc_build_struct (tree name, tree fields, tree super_name)
+objc_build_struct (tree class, tree fields, tree super_name)
 {
+  tree name = CLASS_NAME (class);
   tree s = start_struct (RECORD_TYPE, name);
   tree super = (super_name ? xref_tag (RECORD_TYPE, super_name) : NULL_TREE);
   tree t, objc_info = NULL_TREE;
@@ -857,15 +858,26 @@ objc_build_struct (tree name, tree fields, tree super_name)
       = chainon (objc_info,
 		 build_tree_list (NULL_TREE, TYPE_OBJC_INFO (t)));
 
+  /* Point the struct at its related Objective-C class.  */
+  INIT_TYPE_OBJC_INFO (s);
+  TYPE_OBJC_INTERFACE (s) = class;
+
   s = finish_struct (s, fields, NULL_TREE);
 
   for (t = TYPE_NEXT_VARIANT (s); t;
        t = TYPE_NEXT_VARIANT (t), objc_info = TREE_CHAIN (objc_info))
-    TYPE_OBJC_INFO (t) = TREE_VALUE (objc_info);
+    {
+      TYPE_OBJC_INFO (t) = TREE_VALUE (objc_info);
+      /* Replace the IDENTIFIER_NODE with an actual @interface.  */
+      TYPE_OBJC_INTERFACE (t) = class;
+    }
 
   /* Use TYPE_BINFO structures to point at the super class, if any.  */
   objc_xref_basetypes (s, super);
 
+  /* Mark this struct as a class template.  */
+  CLASS_STATIC_TEMPLATE (class) = s;
+
   return s;
 }
 
@@ -1099,6 +1111,16 @@ objc_compare_types (tree ltyp, tree rtyp, int argno, tree callee)
   else
     rcls = rproto = NULL_TREE;
 
+  /* If we could not find an @interface declaration, we must have
+     only seen a @class declaration; for purposes of type comparison,
+     treat it as a stand-alone (root) class.  */
+
+  if (lcls && TREE_CODE (lcls) == IDENTIFIER_NODE)
+    lcls = NULL_TREE;
+
+  if (rcls && TREE_CODE (rcls) == IDENTIFIER_NODE)
+    rcls = NULL_TREE;
+
   /* If either type is an unqualified 'id', we're done.  */
   if ((!lproto && objc_is_object_id (ltyp))
       || (!rproto && objc_is_object_id (rtyp)))
@@ -4109,15 +4131,10 @@ build_private_template (tree class)
 {
   if (!CLASS_STATIC_TEMPLATE (class))
     {
-      tree record = objc_build_struct (CLASS_NAME (class),
+      tree record = objc_build_struct (class,
 				       get_class_ivars (class, false),
 				       CLASS_SUPER_NAME (class));
 
-      /* mark this record as class template - for class type checking */
-      INIT_TYPE_OBJC_INFO (record);
-      TYPE_OBJC_INTERFACE (record) = class;
-      CLASS_STATIC_TEMPLATE (class) = record;
-
       /* Set the TREE_USED bit for this struct, so that stab generator
 	 can emit stabs for this struct type.  */
       if (flag_debug_only_used_symbols && TYPE_STUB_DECL (record))