[GROOVY-3102] NPE with flatten() in case of null elements in the collection

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.5.7
• Fix Version/s: 1.6-rc-1, 1.5.8, 1.7-beta-1
• Assignee: Paul King
• Reporter: Aldo Bongio
• Created: 17/Oct/08 06:07
• Updated: 23/Dec/08 05:58
• Resolved: 19/Oct/08 02:38

Description

The modification made for bug 2904 has broken the flatten() method, which now raises a NPE if the collection contains (at any level) a null element
To reproduce:
["A", null, "B"].flatten()
throws a NPE with Groovy 1.5.7.
It worked fine with Groovy 1.5.6 and before.