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Posted to notifications@groovy.apache.org by "Paul King (Jira)" <ji...@apache.org> on 2020/07/24 11:39:00 UTC

[jira] [Resolved] (GROOVY-9648) Bad error message when attempting to call a missing constructor

     [ https://issues.apache.org/jira/browse/GROOVY-9648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King resolved GROOVY-9648.
-------------------------------
    Fix Version/s: 3.0.6
                   4.0.0-alpha-1
         Assignee: Paul King
       Resolution: Fixed

Proposed PR merged.

> Bad error message when attempting to call a missing constructor
> ---------------------------------------------------------------
>
>                 Key: GROOVY-9648
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9648
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 3.0.5
>            Reporter: Paul King
>            Assignee: Paul King
>            Priority: Major
>             Fix For: 4.0.0-alpha-1, 3.0.6
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> For this class here:
> {code}
> class Person {
>     String name
>     Person(String name)  {
>         this.name = name
>    }
> }
> {code}
> Attempting to construct an instance but supplying the incorrect type yields expected error messages:
> {code}
> new Person(new Date()) // groovy.lang.GroovyRuntimeException: Could not find matching constructor for: Person(Date)
> new Person(name: new Date()) // groovy.lang.GroovyRuntimeException: failed to invoke constructor: public Person(java.lang.String) with arguments: [] reason: java.lang.IllegalArgumentException: wrong number of arguments
> {code}
> The second is using normal named args which needs a no-arg constructor.
> But when swapping to indy we get:
> {code}
> new Person(new Date()) // groovy.lang.GroovyRuntimeException: Could not find matching constructor for: Person(Date) [Same]
> new Person(name: new Date()) // java.lang.invoke.WrongMethodTypeException: cannot convert MethodHandle(String)Person to ()Object [Bad Message]
> {code}



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