From 26239ee580e5ffbdcad657c291bf4f49e6b297cf Mon Sep 17 00:00:00 2001
From: Benoit Steiner <benoit.steiner.goog@gmail.com>
Date: Mon, 13 Aug 2018 11:05:51 -0700
Subject: [PATCH] Use NULL instead of nullptr to avoid adding a cxx11
 requirement.

---
 unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h           | 2 +-
 unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h | 4 ++--
 unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h         | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h b/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
index f1f877c16..bcaf5c97f 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorAssign.h
@@ -187,7 +187,7 @@ struct TensorEvaluator<const TensorAssignOp<LeftArgType, RightArgType>, Device>
 
   EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void evalBlock(TensorBlock* block) {
     if (TensorEvaluator<LeftArgType, Device>::RawAccess &&
-        m_leftImpl.data() != nullptr) {
+        m_leftImpl.data() != NULL) {
       TensorBlock left_block(block->first_coeff_index(), block->block_sizes(),
                              block->tensor_strides(), block->tensor_strides(),
                              m_leftImpl.data() + block->first_coeff_index());
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
index cc134228a..3e3665efb 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
@@ -102,7 +102,7 @@ class Allocator {
 // Build a thread pool device on top the an existing pool of threads.
 struct ThreadPoolDevice {
   // The ownership of the thread pool remains with the caller.
-  ThreadPoolDevice(ThreadPoolInterface* pool, int num_cores, Allocator* allocator = nullptr)
+  ThreadPoolDevice(ThreadPoolInterface* pool, int num_cores, Allocator* allocator = NULL)
       : pool_(pool), num_threads_(num_cores), allocator_(allocator) { }
 
   EIGEN_STRONG_INLINE void* allocate(size_t num_bytes) const {
@@ -282,7 +282,7 @@ struct ThreadPoolDevice {
   // Convenience wrapper for parallelFor that does not align blocks.
   void parallelFor(Index n, const TensorOpCost& cost,
                    std::function<void(Index, Index)> f) const {
-    parallelFor(n, cost, nullptr, std::move(f));
+    parallelFor(n, cost, NULL, std::move(f));
   }
 
   // Thread pool accessor.
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
index 3f3b5685d..0294aa62e 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorExecutor.h
@@ -227,7 +227,7 @@ class TensorExecutor<Expression, ThreadPoolDevice, Vectorizable, Tileable> {
     typedef EvalRange<Evaluator, StorageIndex, Vectorizable> EvalRange;
 
     Evaluator evaluator(expr, device);
-    const bool needs_assign = evaluator.evalSubExprsIfNeeded(nullptr);
+    const bool needs_assign = evaluator.evalSubExprsIfNeeded(NULL);
     if (needs_assign) {
       const StorageIndex PacketSize =
           Vectorizable
@@ -271,7 +271,7 @@ class TensorExecutor<Expression, ThreadPoolDevice, Vectorizable, /*Tileable*/ tr
       return;
     }
 
-    const bool needs_assign = evaluator.evalSubExprsIfNeeded(nullptr);
+    const bool needs_assign = evaluator.evalSubExprsIfNeeded(NULL);
     if (needs_assign) {
       TensorBlockShapeType block_shape = TensorBlockShapeType::kSkewedInnerDims;
       Index block_total_size = 0;