From b2ae509030ec50fc8e4245c9a1e64a8eeebff1a8 Mon Sep 17 00:00:00 2001
From: chertus <chertus@gmail.com>
Date: Mon, 11 Nov 2019 21:02:44 +0300
Subject: [PATCH] fix gcc9 build

---
 dbms/src/Functions/GatherUtils/Algorithms.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dbms/src/Functions/GatherUtils/Algorithms.h b/dbms/src/Functions/GatherUtils/Algorithms.h
index fd77d52ece6..9904d0619f1 100644
--- a/dbms/src/Functions/GatherUtils/Algorithms.h
+++ b/dbms/src/Functions/GatherUtils/Algorithms.h
@@ -431,7 +431,10 @@ bool sliceHasImpl(const FirstSliceType & first, const SecondSliceType & second,
 }
 
 template <typename T, typename U>
-bool sliceEqualElements(const NumericArraySlice<T> & first, const NumericArraySlice<U> & second, size_t first_ind, size_t second_ind)
+bool sliceEqualElements(const NumericArraySlice<T> & first [[maybe_unused]],
+                        const NumericArraySlice<U> & second [[maybe_unused]],
+                        size_t first_ind [[maybe_unused]],
+                        size_t second_ind [[maybe_unused]])
 {
     /// TODO: Decimal scale
     if constexpr (IsDecimalNumber<T> && IsDecimalNumber<U>)