[Minor][C++] Fix compile warning (#123)

apache · Mar 17, 2023 · c03ce2a · c03ce2a
1 parent e4dcbfe
commit c03ce2a
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diff --git a/.gitignore b/.gitignore
@@ -3,4 +3,6 @@
 .idea
 .DS_store
 .cache
+.ccls-cache
 
+compile_commands.json
diff --git a/cpp/src/filesystem.cc b/cpp/src/filesystem.cc
@@ -155,6 +155,7 @@ Result<T> FileSystem::ReadFileToValue(const std::string& path) const noexcept {
                                        arrow_fs_->OpenInputStream(path));
   GAR_RETURN_ON_ARROW_ERROR_AND_ASSIGN(auto bytes,
                                        input->Read(sizeof(T), &ret));
+  ARROW_UNUSED(bytes);
   return ret;
 }