[ARROW-10852] [C++] AssertTablesEqual(verbose=true) segfaults if the left array has more rows

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 3.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26787
• Assignee: Weston Pace
• Reporter: Ben Kietzman
• Created: 08/Dec/20 20:02
• Updated: 11/Jan/23 08:15
• Resolved: 15/Dec/20 19:01

Description

MultipleChunkIterator is used to implement the verbose comparison in AssertTablesEqual and seems to assume that the arrays have identical length. If the left chunkedarray is longer, this will result in segfaulting when trying to read nonexistent chunks of the right chunkedarray.

Issue Links

• links to: GitHub Pull Request #8922