[GROOVY-8610] STC NPE using DGM collect on Iterator

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.6.0-alpha-4, 3.0.0-alpha-3, 2.5.1
• Component/s: Static Type Checker
• Assignee: John Wagenleitner
• Reporter: John Wagenleitner
• Created: 27/May/18 19:06
• Updated: 26/Jul/18 04:39
• Resolved: 28/May/18 10:44

Description

@groovy.transform.TypeChecked
def m() {
    List<String> list = ['foo', 'bar', 'baz']
    list.iterator().collect { it.startsWith('ba') } == [false, true, true]
}

m()

Results in: 

BUG! exception in phase 'instruction selection' in source unit 'TestScript.groovy' unexpected NullpointerException

Issue Links

• links to: GitHub Pull Request #729