[GROOVY-9969] Use of a negative range with Long values results in reversed sequence

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.5.12, 2.5.14
• Component/s: groovy-runtime
• Assignee: Unassigned
• Reporter: Sean Fitts
• Created: 05/Mar/21 20:33
• Updated: 05/Mar/21 21:04

Description

Use of long values when describing an array range results in a reserved result when it should not.

For example, the following is true in 2.5.11 and false starting in 2.5.12:

[1L, 2L, 3L, 4L, 5L, 6L][(2L .. -2L)] == [3L, 4L, 5L]

The following however is true in all versions of 2.5:

[1L, 2L, 3L, 4L, 5L, 6L][(2 .. -2)] == [3L, 4L, 5L]

I believe this bug was introduced in the fix for https://issues.apache.org/jira/browse/GROOVY-8966. The NumberRange produced reverses the from and to resulting in the reversed sequence.