re PR c++/35097 (ICE with attribute and template specialization)

        PR c++/35097
        * pt.c (tsubst): Don't look up a template typedef in an explicit
        specialization.

From-SVN: r132253

gcc/cp/ChangeLog

+2008-02-11  Jason Merrill  <jason@redhat.com>
+
+	PR c++/35097
+	* pt.c (tsubst): Don't look up a template typedef in an explicit
+	specialization.
+
 2008-02-11  Douglas Gregor  <doug.gregor@gmail.com>
 
        PR c++/35113

gcc/cp/pt.c

@@ -8826,14 +8826,16 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
       tree decl = TYPE_NAME (t);
       
       if (DECL_CLASS_SCOPE_P (decl)
-	  && CLASSTYPE_TEMPLATE_INFO (DECL_CONTEXT (decl)))
+	  && CLASSTYPE_TEMPLATE_INFO (DECL_CONTEXT (decl))
+	  && uses_template_parms (DECL_CONTEXT (decl)))
 	{
 	  tree tmpl = most_general_template (DECL_TI_TEMPLATE (decl));
 	  tree gen_args = tsubst (DECL_TI_ARGS (decl), args, complain, in_decl);
 	  r = retrieve_specialization (tmpl, gen_args, false);
 	}
       else if (DECL_FUNCTION_SCOPE_P (decl)
-	       && DECL_TEMPLATE_INFO (DECL_CONTEXT (decl)))
+	       && DECL_TEMPLATE_INFO (DECL_CONTEXT (decl))
+	       && uses_template_parms (DECL_TI_ARGS (DECL_CONTEXT (decl))))
 	r = retrieve_local_specialization (decl);
       else
 	/* The typedef is from a non-template context.  */

gcc/testsuite/g++.dg/ext/attrib31.C

+// PR c++/35097
+
+template<int> struct A;
+
+template<> struct A<0>
+{
+  typedef int X __attribute((aligned(4)));
+};
+
+template<typename T> void foo(const A<0>::X&, T);
+
+void bar()
+{
+  foo(A<0>::X(), 0);
+}