re PR c++/28558 (Trouble with __attribute__ and non-PODs)

        PR c++/28558
        * cp/decl.c (groktypename): Ignore attributes applied to class type.
        * testsuite/g++.dg/ext/attrib28.C: New test.

From-SVN: r127859

gcc/cp/ChangeLog

+2007-08-27  Jason Merrill  <jason@redhat.com>
+
+	PR c++/28558
+	* decl.c (groktypename): Ignore attributes applied to class type.
+
 2007-08-28  Richard Guenther  <rguenther@suse.de>
 
 	* decl.c (duplicate_decls): Merge DECL_DISREGARD_INLINE_LIMITS.

gcc/cp/decl.c

@@ -3877,7 +3877,13 @@ groktypename (cp_decl_specifier_seq *type_specifiers,
   type_specifiers->attributes = NULL_TREE;
   type = grokdeclarator (declarator, type_specifiers, TYPENAME, 0, &attrs);
   if (attrs)
-    cplus_decl_attributes (&type, attrs, 0);
+    {
+      if (CLASS_TYPE_P (type))
+	warning (OPT_Wattributes, "ignoring attributes applied to class type "
+		 "outside of definition");
+      else
+	cplus_decl_attributes (&type, attrs, 0);
+    }
   return type;
 }
 

gcc/testsuite/ChangeLog

+2007-08-28  Jason Merrill  <jason@redhat.com>
+
+	PR c++/28558
+	* g++.dg/ext/attrib28.C: New test.
+
 2007-08-28  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/32661

gcc/testsuite/g++.dg/ext/attrib28.C

+// PR c++/28558
+// { dg-options "" }
+
+struct A
+{
+  A(int) { }
+};
+
+int main()
+{
+  A a = (A __attribute__((unused)))0; // { dg-warning "attribute" }
+}