[ARROW-5380] [C++] Fix and enable UBSan for unaligned accesses.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.1, 0.15.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/21839
• Assignee: Micah Kornfield
• Reporter: Micah Kornfield
• Created: 21/May/19 04:39
• Updated: 11/Jan/23 07:40
• Resolved: 02/Jul/19 09:32

Description

Currently unaligned access configuration in UBSan has been turned off. We should introduce a method that safely loads unaligned data, and use it to fix UBSan errors. Then turn them on for UBSan.

Issue Links

• links to: GitHub Pull Request #4757
• links to: GitHub Pull Request #4787