westonpace commented on code in PR #12289:
URL: https://github.com/apache/arrow/pull/12289#discussion_r868724010
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cpp/src/arrow/compute/exec/util.h:
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@@ -280,7 +282,7 @@ class AtomicCounter {
std::atomic<bool> complete_{false};
};
-class ThreadIndexer {
+class ARROW_EXPORT ThreadIndexer {
Review Comment:
Ah, it seems we are using these utilities in our unit tests. I hadn't
thought that needed export but I suppose it does.
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