re PR c++/65687 (Inconsistent behavior for __attribute__((__deprecated__)) between C and C++.)

	PR c++/65687
	* decl.c (type_is_deprecated): Don't look into a typedef.

From-SVN: r232703

gcc/cp/ChangeLog

 2016-01-21  Jason Merrill  <jason@redhat.com>
 
+	PR c++/65687
+	* decl.c (type_is_deprecated): Don't look into a typedef.
+
 	PR c++/40751
 	PR c++/64987
 	* decl.c (copy_type_enum): Respect TYPE_USER_ALIGN.

gcc/cp/decl.c

@@ -11595,9 +11595,13 @@ type_is_deprecated (tree type)
   enum tree_code code;
   if (TREE_DEPRECATED (type))
     return type;
-  if (TYPE_NAME (type)
-      && TREE_DEPRECATED (TYPE_NAME (type)))
-    return type;
+  if (TYPE_NAME (type))
+    {
+      if (TREE_DEPRECATED (TYPE_NAME (type)))
+	return type;
+      else
+	return NULL_TREE;
+    }
 
   /* Do warn about using typedefs to a deprecated class.  */
   if (OVERLOAD_TYPE_P (type) && type != TYPE_MAIN_VARIANT (type))

gcc/testsuite/g++.dg/warn/deprecated-10.C

+// PR c++/65687
+
+typedef struct old_visible_stuff *opaquePointer;
+
+struct old_visible_stuff {
+  int things_we_no_longer;
+  int wish_to_expose;
+} __attribute__((__deprecated__("do not refer to this, the layout might change")));
+
+typedef struct old_visible_stuff *another; // { dg-warning "deprecated" }
+
+opaquePointer runtime_function (opaquePointer someObject);
+
+opaquePointer bad_runtime_call (struct old_visible_stuff *otherObject); // { dg-warning "deprecated" }