From 6035da5283f12f7e6a49cda0c21696c8e5a115b7 Mon Sep 17 00:00:00 2001
From: Antonio Sanchez <cantonios@google.com>
Date: Thu, 1 Jul 2021 12:47:52 -0700
Subject: Fix compile issues for gcc 4.8.

- Move constructors can only be defaulted as NOEXCEPT if all members
have NOEXCEPT move constructors.
- gcc 4.8 has some funny parsing bug in `a < b->c`, thinking `b-` is a template parameter.
---
 Eigen/src/Core/DenseStorage.h                       | 8 ++++----
 unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Eigen/src/Core/DenseStorage.h b/Eigen/src/Core/DenseStorage.h
index 8a4cbd4be..08ef6c530 100644
--- a/Eigen/src/Core/DenseStorage.h
+++ b/Eigen/src/Core/DenseStorage.h
@@ -220,7 +220,7 @@ template<typename T, int Size, int _Rows, int _Cols, int _Options> class DenseSt
       EIGEN_INTERNAL_DENSE_STORAGE_CTOR_PLUGIN(Index size = Size)
     }
 #else
-    EIGEN_DEVICE_FUNC DenseStorage(const DenseStorage& other) = default;
+    EIGEN_DEVICE_FUNC DenseStorage(const DenseStorage&) = default;
 #endif
 #if !EIGEN_HAS_CXX11
     EIGEN_DEVICE_FUNC
@@ -230,7 +230,7 @@ template<typename T, int Size, int _Rows, int _Cols, int _Options> class DenseSt
       return *this;
     }
 #else
-    EIGEN_DEVICE_FUNC DenseStorage& operator=(const DenseStorage& other) = default;
+    EIGEN_DEVICE_FUNC DenseStorage& operator=(const DenseStorage&) = default;
 #endif
 #if EIGEN_HAS_RVALUE_REFERENCES
 #if !EIGEN_HAS_CXX11
@@ -245,8 +245,8 @@ template<typename T, int Size, int _Rows, int _Cols, int _Options> class DenseSt
       return *this;
     }
 #else
-    EIGEN_DEVICE_FUNC DenseStorage(DenseStorage&& other) EIGEN_NOEXCEPT = default;
-    EIGEN_DEVICE_FUNC DenseStorage& operator=(DenseStorage&& other) EIGEN_NOEXCEPT = default;
+    EIGEN_DEVICE_FUNC DenseStorage(DenseStorage&&) = default;
+    EIGEN_DEVICE_FUNC DenseStorage& operator=(DenseStorage&&) = default;
 #endif
 #endif
     EIGEN_DEVICE_FUNC DenseStorage(Index size, Index rows, Index cols) {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
index 3b2100ab0..d96303224 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
@@ -372,7 +372,7 @@ template <typename T> struct ArgMaxTupleReducer
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void reduce(const T t, T* accum) const {
     if (t.second < accum->second) {
       return;
-    } else if (t.second > accum->second || t.first < accum->first) {
+    } else if (t.second > accum->second || accum->first > t.first ) {
       *accum = t;
     }
   }
@@ -400,7 +400,7 @@ template <typename T> struct ArgMinTupleReducer
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void reduce(const T& t, T* accum) const {
     if (t.second > accum->second) {
       return;
-    } else if (t.second < accum->second || t.first < accum->first) {
+    } else if (t.second < accum->second || accum->first > t.first) {
       *accum = t;
     }
   }
-- 
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