Rebuild the nested name specifiers in member-pointer declarator chunks when
entering the current instantiation.  Set up a little to preserve type location
information for typename types while we're in there.

Fixes a Boost failure.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102673 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaTemplate/nested-name-spec-template.cpp b/test/SemaTemplate/nested-name-spec-template.cpp
index 1691db7..9d25a05 100644
--- a/test/SemaTemplate/nested-name-spec-template.cpp
+++ b/test/SemaTemplate/nested-name-spec-template.cpp
@@ -51,3 +51,16 @@
   typedef typename N::template B<T>::type type; // expected-error{{'B' following the 'template' keyword does not refer to a template}} \
                                                 // expected-error{{expected member name}}
 };
+
+// Reduced from a Boost failure.
+namespace test1 {
+  template <class T> struct pair {
+    T x;
+    T y;
+
+    static T pair<T>::* const mem_array[2];
+  };
+
+  template <class T>
+  T pair<T>::* const pair<T>::mem_array[2] = { &pair<T>::x, &pair<T>::y };
+}