From ef0e389181c0af4fdb70b6c2fa2bf181e3ba8059 Mon Sep 17 00:00:00 2001
From: cxl <cxl@f0d560ea-af0d-0410-9eb7-867de7ffcac7>
Date: Wed, 31 Oct 2018 00:12:13 +0000
Subject: [PATCH] Core: Workaround for MSC issue in Tuple

git-svn-id: svn://ultimatepp.org/upp/trunk@12431 f0d560ea-af0d-0410-9eb7-867de7ffcac7
---
 uppsrc/Core/Tuple.h | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/uppsrc/Core/Tuple.h b/uppsrc/Core/Tuple.h
index 6c5530b2a..ad4c2b04d 100644
--- a/uppsrc/Core/Tuple.h
+++ b/uppsrc/Core/Tuple.h
@@ -97,27 +97,15 @@ struct TupleN<4, A, B, C, D> : public TupleN<3, A, B, C>
 #define GET_FROM_TUPLE(M, I) \
  \
 template <typename T> \
-auto GetFromTuple(const T& t, const IndexI__<I>&) -> const decltype(t.M)& \
+auto GetFromTuple(const T& t, const IndexI__<I>&) -> decltype(t.M)& \
 { \
-	return t.M; \
+	return const_cast<T&>(t).M; \
 } \
  \
 template <typename T> \
-auto GetFromTupleByType(const T& t, decltype(t.M)*, const IndexI__<I>* = NULL) -> const decltype(t.M)& \
+auto GetFromTupleByType(const T& t, decltype(t.M)*, const IndexI__<I>* = NULL) -> decltype(t.M)& \
 { \
-	return t.M; \
-} \
- \
-template <typename T> \
-auto GetFromTuple(T& t, const IndexI__<I>&) -> decltype(t.M)& \
-{ \
-	return t.M; \
-} \
- \
-template <typename T> \
-auto GetFromTupleByType(T& t, decltype(t.M)*, const IndexI__<I>* = NULL) -> decltype(t.M)& \
-{ \
-	return t.M; \
+	return const_cast<T&>(t).M; \
 }
 
 GET_FROM_TUPLE(a, 0)