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https://issues.apache.org/jira/browse/ARROW-12530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yibo Cai resolved ARROW-12530.
------------------------------
Resolution: Fixed
Issue resolved by pull request 10303
[https://github.com/apache/arrow/pull/10303]
> [C++] Remove Buffer::mutable_data_ member and use const_cast on data_ only if
> is_mutable_ is true
> -------------------------------------------------------------------------------------------------
>
> Key: ARROW-12530
> URL: https://issues.apache.org/jira/browse/ARROW-12530
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 5.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Proposed new implementation of mutable_data() by [~apitrou]
> {code}
> uint8_t* mutable_data() {
> return is_mutable() ? const_cast<uint8_t*>(data()) : nullptr;
> }
> {code}
> This will help avoid various classes of bugs (initializing Buffer subclasses
> incorrectly) and make the object smaller on the heap
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