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https://issues.apache.org/jira/browse/ARROW-2317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16400969#comment-16400969
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Antoine Pitrou commented on ARROW-2317:
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Did you report the issue to the Cython project as well? Their bug tracker is at
https://github.com/cython/cython/
> [Python] fix C linkage warning
> ------------------------------
>
> Key: ARROW-2317
> URL: https://issues.apache.org/jira/browse/ARROW-2317
> Project: Apache Arrow
> Issue Type: Bug
> Reporter: Viktor Gal
> Priority: Minor
>
> When using pyarrow interface from a c++ library one will get the following
> compiler warning:
> {quote}{{warning: 'unwrap_table' has C-linkage specified, but returns
> user-defined type 'arrow::Status' which is incompatible with C
> [-Wreturn-type-c-linkage]}}
> {{ARROW_EXPORT Status unwrap_table(PyObject* table, std::shared_ptr<Table>*
> out);}}
> {quote}
> This is due to a Cython artifact.
>
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