[LUCENE-6358] UnescapedCharSequence.toLowerCase throws ArrayIndexOutOfBoundsException for certain input strings

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 5.0
• Component/s: modules/queryparser
• Lucene Fields: New, Patch Available
• Assignee: Unassigned
• Reporter: Christoph Kaser
• Created: 13/Mar/15 12:25
• Updated: 28/Aug/22 14:29

Description

The static toLowerCase-method of UnescapedCharSequence does not account for locales in which the length of the result of String.toLowerCase is not the same as the length of the input string. This causes an ArrayIndexOutOfBoundsException, because wasEscaped and the chars array are not of the same length.
(See attached test and patch)