From 7113d6a2697a5626f992a4d84c142022cd85d530 Mon Sep 17 00:00:00 2001
From: Wonchan Lee <wonchanl@nvidia.com>
Date: Wed, 31 Mar 2021 23:37:38 -0700
Subject: [PATCH] Make sure to combine hash values in the same way as the other
 row_hasher does

---
 cpp/include/cudf/table/row_operators.cuh | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/cpp/include/cudf/table/row_operators.cuh b/cpp/include/cudf/table/row_operators.cuh
index b78de25afb1..61d714c5538 100644
--- a/cpp/include/cudf/table/row_operators.cuh
+++ b/cpp/include/cudf/table/row_operators.cuh
@@ -468,16 +468,17 @@ class row_hasher {
 
   __device__ auto operator()(size_type row_index) const
   {
-    auto hash_combiner = [=](hash_value_type lhs, hash_value_type rhs) {
+    auto hash_combiner = [](hash_value_type lhs, hash_value_type rhs) {
       return hash_function<hash_value_type>{}.hash_combine(lhs, rhs);
     };
 
     // Hash the first column w/ the seed
     auto const initial_hash =
-      type_dispatcher(_table.column(0).type(),
-                      element_hasher_with_seed<hash_function, has_nulls>{_seed},
-                      _table.column(0),
-                      row_index);
+      hash_combiner(hash_value_type{0},
+                    type_dispatcher(_table.column(0).type(),
+                                    element_hasher_with_seed<hash_function, has_nulls>{_seed},
+                                    _table.column(0),
+                                    row_index));
 
     // Hashes an element in a column
     auto hasher = [=](size_type column_index) {