kou commented on PR #41487:
URL: https://github.com/apache/arrow/pull/41487#issuecomment-2096941070
You're right... I missed "not"... Sorry...
Could you try this whether we can detect these warnings in our build?
```diff
diff --git a/cpp/cmake_modules/SetupCxxFlags.cmake
b/cpp/cmake_modules/SetupCxxFlags.cmake
index ea357b4779..a7001d6774 100644
--- a/cpp/cmake_modules/SetupCxxFlags.cmake
+++ b/cpp/cmake_modules/SetupCxxFlags.cmake
@@ -330,8 +330,9 @@ if("${BUILD_WARNING_LEVEL}" STREQUAL "CHECKIN")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-conversion")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-sign-conversion")
- set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wunused-result")
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wdate-time")
+ set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wredundant-move")
+ set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wunused-result")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel" OR CMAKE_CXX_COMPILER_ID
STREQUAL
"IntelLLVM")
if(WIN32)
```
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