This backport contains 1 patch from gcc main stream tree.
The commit id of these patchs list as following in the order of time.

0001-Fix-interaction-between-aka-changes-and-DR1558.patch
ae83b9deb87787371cd94b4417e160d41dd0322c

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index adc021b2a5c..42afe1bd5cb 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -5759,8 +5759,13 @@ enum auto_deduction_context
 
    STF_USER_VISIBLE: use heuristics to try to avoid stripping user-facing
        aliases of internal details.  This is intended for diagnostics,
-       where it should (for example) give more useful "aka" types.  */
+       where it should (for example) give more useful "aka" types.
+
+   STF_STRIP_DEPENDENT: allow the stripping of aliases with dependent
+       template parameters, relying on code elsewhere to report any
+       appropriate diagnostics.  */
 const unsigned int STF_USER_VISIBLE = 1U;
+const unsigned int STF_STRIP_DEPENDENT = 1U << 1;
 
 /* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
    node.  */
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index ba635d4ddbd..6c39c004b01 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -1488,7 +1488,8 @@ strip_typedefs (tree t, bool *remove_attributes, unsigned int flags)
   if (t == TYPE_CANONICAL (t))
     return t;
 
-  if (dependent_alias_template_spec_p (t))
+  if (!(flags & STF_STRIP_DEPENDENT)
+      && dependent_alias_template_spec_p (t))
     /* DR 1558: However, if the template-id is dependent, subsequent
        template argument substitution still applies to the template-id.  */
     return t;
@@ -1673,7 +1674,8 @@ strip_typedefs (tree t, bool *remove_attributes, unsigned int flags)
 	      && !user_facing_original_type_p (t))
 	    return t;
 	  result = strip_typedefs (DECL_ORIGINAL_TYPE (TYPE_NAME (t)),
-				   remove_attributes, flags);
+				   remove_attributes,
+				   flags | STF_STRIP_DEPENDENT);
 	}
       else
 	result = TYPE_MAIN_VARIANT (t);
diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-1.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-1.C
new file mode 100644
index 00000000000..c3f7b1977db
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-1.C
@@ -0,0 +1,9 @@
+// { dg-require-effective-target c++11 }
+
+template<typename> struct A {};
+template<typename T1, typename T2 = typename T1::value> using alias1 = A<T1>;
+template<typename T> class B {
+  using alias2 = alias1<A<T>>; // { dg-error {no type named 'value'} }
+  A<alias2> a; // { dg-bogus {no type named 'value'} }
+};
+B<int> b;
diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-2.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-2.C
new file mode 100644
index 00000000000..31d73d6bad3
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-2.C
@@ -0,0 +1,14 @@
+// { dg-require-effective-target c++11 }
+
+template <bool> struct A;
+class Vector {
+  template <typename> struct TypeIsGCThing {
+    template <typename T, typename A<T ::value>::Type> using Vector = Vector;
+    struct B;
+    template <typename> class ContainerIter {
+      using Action = B;
+      using ActionVector = Vector<Action, 0>;
+      ContainerIter<ActionVector> a;
+    };
+  };
+};
diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-3.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-3.C
new file mode 100644
index 00000000000..6698a366411
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-pr92206-3.C
@@ -0,0 +1,8 @@
+// { dg-require-effective-target c++11 }
+
+template <typename> void a();
+template <typename> struct b;
+template <bool> using c = int;
+template <typename d, typename e = decltype(a<d>)> using f = e;
+template <typename e> using g = f<e>;
+template <typename h> c<b<g<h>>::i> j;