Work around VC++ /analyze internal compiler error

base/tuple.h

Index: base/tuple.h
diff --git a/base/tuple.h b/base/tuple.h
index 885413f7570e980dbc4c4a2caa4108b2594b8f1a..285b7d0807711c0964ebebead3de84727c8f3698 100644
--- a/base/tuple.h
+++ b/base/tuple.h
@@ -40,6 +40,58 @@ struct IndexSequence {};
 template <size_t... Ns>
 struct MakeIndexSequenceImpl;
 
+#if defined(_PREFAST_) && defined(OS_WIN)
+
+// Work around VC++ 2013 /analyze internal compiler error:
+// https://connect.microsoft.com/VisualStudio/feedback/details/1053626
+
+template <>
+struct IndexSequence<0> {};
+
+template <>
+struct IndexSequence<0,1> {};
+
+template <>
+struct IndexSequence<0,1,2> {};
+
+template <>
+struct IndexSequence<0,1,2,3> {};
+
+template <>
+struct IndexSequence<0,1,2,3,4> {};
+
+template <>
+struct MakeIndexSequenceImpl<0> {
+  using Type = IndexSequence<>;
+};
+
+template <>
+struct MakeIndexSequenceImpl<1> {
+  using Type = IndexSequence<0>;
+};
+
+template <>
+struct MakeIndexSequenceImpl<2> {
+  using Type = IndexSequence<0,1>;
+};
+
+template <>
+struct MakeIndexSequenceImpl<3> {
+  using Type = IndexSequence<0,1,2>;
+};
+
+template <>
+struct MakeIndexSequenceImpl<4> {
+  using Type = IndexSequence<0,1,2,3>;
+};
+
+template <>
+struct MakeIndexSequenceImpl<5> {
+  using Type = IndexSequence<0,1,2,3,4>;
+};
+
+#else
+
 template <size_t... Ns>
 struct MakeIndexSequenceImpl<0, Ns...> {
   using Type = IndexSequence<Ns...>;
@@ -49,6 +101,8 @@ template <size_t N, size_t... Ns>
 struct MakeIndexSequenceImpl<N, Ns...>

[mdempsky, 2014/12/15 22:17:55]

I previously wrote this as:

    template <size_t N, size_t... Ns>
    struct MakeIndexSequenceImpl<N, Ns...> {
      using Type = typename MakeIndexSequenceImpl<N - 1, N - 1, Ns...>::Type;
    };

but later changed it to use inheritance just to be a bit more concise.  Did the
old form have problems with /analyze too?  If not, we could just revert to that
maybe?

     : MakeIndexSequenceImpl<N - 1, N - 1, Ns...> {};
 
+#endif
+
 template <size_t N>
 using MakeIndexSequence = typename MakeIndexSequenceImpl<N>::Type;