[GROOVY-11329] Class using trait and @Immutable and allProperties gives BUG! exception in phase 'canonicalization' NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0-alpha-7, 4.0.20
• Assignee: Paul King
• Reporter: Paul King
• Created: 05/Mar/24 03:03
• Updated: 24/Mar/24 23:12
• Resolved: 05/Mar/24 04:08

Description

import groovy.transform.Immutable

trait T {
    String foo
}

@Immutable(allProperties=true)
class C implements T {
    String bar
}

assert new C('bar', 'foo').toString() == 'C(bar, foo)'

Gives:

BUG! exception in phase 'canonicalization' in source unit 'ConsoleScript0' unexpected NullPointerException
...
Caused by: java.lang.NullPointerException
	at groovy.transform.options.ImmutablePropertyHandler.assignFieldWithDefault(ImmutablePropertyHandler.java:237)
	at groovy.transform.options.ImmutablePropertyHandler.createConstructorStatementDefault(ImmutablePropertyHandler.java:225)