From b455f601072c1c3a75bbdefb252cf2642822a0a6 Mon Sep 17 00:00:00 2001
From: Rui Liu <rui.liu@mongodb.com>
Date: Wed, 6 Apr 2022 11:59:33 +0000
Subject: SERVER-65115 Fix collation for $lookup pushdown using index join
 strategy

---
 src/mongo/db/storage/key_string.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/mongo/db/storage/key_string.cpp')

diff --git a/src/mongo/db/storage/key_string.cpp b/src/mongo/db/storage/key_string.cpp
index 2bd3934bb03..908bd51908a 100644
--- a/src/mongo/db/storage/key_string.cpp
+++ b/src/mongo/db/storage/key_string.cpp
@@ -366,9 +366,9 @@ void BuilderBase<BufferT>::appendBool(bool val) {
 }
 
 template <class BufferT>
-void BuilderBase<BufferT>::appendString(StringData val) {
+void BuilderBase<BufferT>::appendString(StringData val, const StringTransformFn& f) {
     _verifyAppendingState();
-    _appendString(val, _shouldInvertOnAppend(), nullptr);
+    _appendString(val, _shouldInvertOnAppend(), f);
     _elemCount++;
 }
 
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