[GROOVY-6350] adding two empty lists fails with NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.7, 2.2.0-beta-2
• Fix Version/s: 2.1.8, 2.2.0-rc-1
• Component/s: Static Type Checker
• Assignee: Jochen Theodorou
• Reporter: Jochen Theodorou
• Created: 16/Sep/13 09:58
• Updated: 14/Oct/13 16:53
• Resolved: 25/Sep/13 08:43

Description

for the expression []+[] the static type checker seems to get confused and fails with a NPE. The checker gets the generics from th list types used here and expects them to exist in a placeholder map, which they do not, and the result is the NPE.