commit 90d4f31438da1852a1f6f2e420d861b7cd272ba1
author Yuriy Chernyshov <thegeorg@yandex-team.ru> Tue May 11 01:50:15 2021 +0500
committer GitHub <noreply@github.com> Mon May 10 13:50:15 2021 -0700
tree 1015f5cbcdd1e19681e29909994224a9dee782f6
parent 3546d29a001e772a51274914f876f1ada65117ec

 Fix newly appeared -Wunused-parameter (#8587)

This is #8584 applied to 3.17.x

src/google/protobuf/arena.h

diff --git a/src/google/protobuf/arena.h b/src/google/protobuf/arena.h
index f84e505..e5d79d1 100644
--- a/src/google/protobuf/arena.h
+++ b/src/google/protobuf/arena.h
@@ -709,7 +709,7 @@
   }
   template <typename T>
   PROTOBUF_ALWAYS_INLINE static Arena* GetOwningArenaInternal(
-      const T* value, std::false_type) {
+      const T* /* value */, std::false_type) {
     return nullptr;
   }