HyukjinKwon commented on code in PR #49070:
URL: https://github.com/apache/arrow/pull/49070#discussion_r2745589957
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cpp/src/arrow/csv/converter.h:
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@@ -57,6 +57,7 @@ class ARROW_EXPORT Converter {
const ConvertOptions& options_;
MemoryPool* pool_;
std::shared_ptr<DataType> type_;
+ std::shared_ptr<void> trie_cache_; // Opaque pointer to TrieCache
Review Comment:
Just to confirm, I checked:
> The destructor of shared_ptr decrements the number of shared owners of the
control block. If that counter reaches zero, the control block calls the
destructor of the managed object. The control block does not deallocate itself
until the
[std::weak_ptr](https://en.cppreference.com/w/cpp/memory/weak_ptr.html) counter
reaches zero as well.
https://en.cppreference.com/w/cpp/memory/shared_ptr.html
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