lidavidm commented on code in PR #13820:
URL: https://github.com/apache/arrow/pull/13820#discussion_r941421690
##########
cpp/src/arrow/python/io.h:
##########
@@ -112,5 +112,9 @@ std::shared_ptr<::arrow::io::InputStream>
MakeTransformInputStream(
std::shared_ptr<::arrow::io::InputStream> wrapped,
TransformInputStreamVTable vtable,
PyObject* arg);
+using StreamWrapFunc = std::function<Result<std::shared_ptr<io::InputStream>>(
+ std::shared_ptr<io::InputStream>)>;
+std::shared_ptr<StreamWrapFunc>
MakeStreamTransformFunc(TransformInputStreamVTable vtable,
Review Comment:
```suggestion
ARROW_PYTHON_EXPORT
std::shared_ptr<StreamWrapFunc>
MakeStreamTransformFunc(TransformInputStreamVTable vtable,
```
"symbol not found" errors on Windows are usually because of a missing
`_EXPORT` macro
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