[GROOVY-7072] NullPointerException in phase 'instruction selection' when using spread-dot operator on an array in static compilation mode

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.6
• Fix Version/s: 2.3.7
• Component/s: Static compilation
• Assignee: Cédric Champeau
• Reporter: Marcin Erdmann
• Created: 13/Sep/14 03:22
• Updated: 17/Dec/14 13:25
• Resolved: 24/Sep/14 11:17

Description

When using spread-dot operator on an array in @CompileStatic annotated method the following error is raised:

BUG! exception in phase 'instruction selection' in source unit 'ConsoleScript9' unexpected NullpointerException
Caused by: java.lang.NullPointerException

Reproducible example:

import groovy.transform.CompileStatic

@CompileStatic
def foo() {
    new File("/").listFiles()*.name
}

foo()

The problem doesn't occur when the operator is used on a list:

import groovy.transform.CompileStatic

@CompileStatic
def foo() {
    new File("/").listFiles().toList()*.name
}

foo()