* pt.c (lookup_template_class_1): Copy abi_tag.

From-SVN: r213762

gcc/cp/ChangeLog

+2014-08-08  Jason Merrill  <jason@redhat.com>
+
+	* pt.c (lookup_template_class_1): Copy abi_tag.
+
 2014-08-08  Kai Tietz  <ktietz@redhat.com>
 
 	* semantics.c (expand_or_defer_fn_1): Check for keep-inline-dllexport

gcc/cp/pt.c

@@ -7813,6 +7813,12 @@ lookup_template_class_1 (tree d1, tree arglist, tree in_decl, tree context,
 	    }
 	}
 
+      if (OVERLOAD_TYPE_P (t)
+	  && !DECL_ALIAS_TEMPLATE_P (gen_tmpl))
+	if (tree attributes
+	    = lookup_attribute ("abi_tag", TYPE_ATTRIBUTES (template_type)))
+	  TYPE_ATTRIBUTES (t) = attributes;
+
       /* Let's consider the explicit specialization of a member
          of a class template specialization that is implicitly instantiated,
 	 e.g.:

gcc/testsuite/g++.dg/abi/abi-tag8.C

+// { dg-options "-Wabi-tag" }
+
+template<class T>
+struct __attribute ((__abi_tag__("cxx11"))) list // { dg-message "list" }
+{ };
+
+struct X {			// { dg-warning "abi tag" }
+  list<int> l;			// { dg-message "X::l" }
+};