[jira] [Commented] (GROOVY-8420) @TypeChecked in 2.4.13 produces incorrect compiler error

["Paul King (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-8420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16328452#comment-16328452 ] 

Paul King commented on GROOVY-8420:
-----------------------------------

I think this might be an Intellij bug. For me it compiles and executes fine in the Groovy console and in fact does so in Intellij IDEA even though it has a red line underneath return with the warning you describe if I hover over it. You might be using a different @Nullable though. The one I tried worked and even so when I deleted that annotation all together.

> @TypeChecked in 2.4.13 produces incorrect compiler error
> --------------------------------------------------------
>
>                 Key: GROOVY-8420
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8420
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 2.4.13
>         Environment: Windows 10, Java 8 Update 152, IntelliJ IDEA Build #IC-173.4127.2
>            Reporter: Steven Dick
>            Priority: Major
>
> After upgrading to Groovy 2.4.13, the following code no longer compiles in Intellij:
> {code:java}
> @TypeChecked
> public class EnhancedDerivedNonUnitisedPrice {
> ...
>     public @Nullable BigDecimal getReturnPerc() {
>         return null;
>     }
> ...
> {code}
> The error is, "Cannot return 'null' from method returning BigDecimal".
> Either removing the {{@TypeChecked}} or adding a cast to {{BigDecimal}} resolves the problem.



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