[ARROW-16191] [C++][Gandiva] Fix size 0 case in arena malloc

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: C++ - Gandiva
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31593
• Assignee: Unassigned
• Reporter: Siddhant Rao
• Created: 13/Apr/22 16:15
• Updated: 11/Jan/23 11:42

Description

The size 0 case in arena malloc is causing sporadic errors due to null pointer being returned to functions like convert_from which treat this as an error.

Issue Links

• links to: GitHub Pull Request #12879