[ARROW-16169] [C++][Gandiva] Fix empty string case in convert_fromUTF8_binary()

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.0.0
• Component/s: C++ - Gandiva
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31573
• Assignee: Unassigned
• Reporter: Siddhant Rao
• Created: 12/Apr/22 07:46
• Updated: 11/Jan/23 11:42
• Resolved: 29/Apr/22 09:56

Description

The empty string case in convert_fromUTF8_binary function is leading to errors with the arena malloc ("Couldn't allocate output string").

Issue Links

• links to: GitHub Pull Request #12860