@@ -9582,7 +9582,7 @@ tsubst_pack_expansion (tree t, tree args
}
}
- if (saved_local_specializations)
+ if (need_local_specializations)
{
htab_delete (local_specializations);
local_specializations = saved_local_specializations;
@@ -0,0 +1,27 @@
+// PR c++/51852
+// { dg-do compile }
+// { dg-options "-std=gnu++11 --param ggc-min-heapsize=0 --param ggc-min-expand=0" }
+
+template <typename, typename>
+class transformed {};
+
+template <class R, class F>
+transformed<F, R> transform (R r, F f);
+
+template <typename, typename>
+class joined {};
+
+template <typename T, typename U>
+joined<T, U> join (T t, U u);
+
+template <typename T, typename U, typename V, typename... Rest>
+auto join (T t, U u, V v, Rest... rest) -> decltype (join (join (t, u), v, rest...));
+
+template <typename F, typename... Rs>
+auto polymorphic_transform (F f, Rs... rs) -> decltype (join (transform(rs, f)...));
+
+int
+main ()
+{
+ polymorphic_transform (0, 0, 0);
+}