From 6dfe1be2a3d2acdfb5673d66c363a273f617c5a8 Mon Sep 17 00:00:00 2001
From: AntoinePrv <AntoinePrv@users.noreply.github.com>
Date: Thu, 2 Jul 2026 10:33:09 +0200
Subject: [PATCH] Add missing typename

---
 cpp/src/arrow/util/rle_encoding_internal.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/cpp/src/arrow/util/rle_encoding_internal.h b/cpp/src/arrow/util/rle_encoding_internal.h
index 825cd253df9b..5dc94f368d3c 100644
--- a/cpp/src/arrow/util/rle_encoding_internal.h
+++ b/cpp/src/arrow/util/rle_encoding_internal.h
@@ -811,7 +811,8 @@ auto RleBitPackedDecoder<T>::GetBatch(value_type* out,
   }
 
   parser_.ParseWithCallable([&](auto run) {
-    using RunDecoder = RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
+    using RunDecoder =
+        typename RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
 
     ARROW_DCHECK_LT(values_read, batch_size);
     RunDecoder decoder(run, value_bit_width_);
@@ -1124,7 +1125,8 @@ auto RleBitPackedDecoder<T>::GetSpaced(Converter converter,
   }
 
   parser_.ParseWithCallable([&](auto run) {
-    using RunDecoder = RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
+    using RunDecoder =
+        typename RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
 
     RunDecoder decoder(run, value_bit_width_);
 
@@ -1306,7 +1308,8 @@ auto RleBitPackedDecoder<T>::GetBatchWithDict(const V* dictionary,
   }
 
   parser_.ParseWithCallable([&](auto run) {
-    using RunDecoder = RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
+    using RunDecoder =
+        typename RleBitPackedDecoderGetRunDecoder<value_type, decltype(run)>::type;
 
     RunDecoder decoder(run, value_bit_width_);