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https://issues.apache.org/jira/browse/GROOVY-7618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14946217#comment-14946217
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ASF GitHub Bot commented on GROOVY-7618:
----------------------------------------
GitHub user shils opened a pull request:
https://github.com/apache/incubator-groovy/pull/135
GROOVY-7618 Parameterless closure to SAM Type argument coercion cause…
…s NPE during instruction selection (STC)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/shils/incubator-groovy GROOVY-7618
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-groovy/pull/135.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #135
----
commit ea3e8220668734aa009e276d41387f1b36c5641c
Author: Shil S <shil.si...@gmail.com>
Date: 2015-10-07T04:21:51Z
GROOVY-7618 Parameterless closure to SAM Type argument coercion causes NPE
during instruction selection (STC)
----
> Parameterless closure to SAM coercion causes NPE during instruction selection
> with STC
> --------------------------------------------------------------------------------------
>
> Key: GROOVY-7618
> URL: https://issues.apache.org/jira/browse/GROOVY-7618
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 2.4.5
> Environment: Java 1.8.0_60, OSX 10.10
> Reporter: Shil Sinha
> Assignee: Cédric Champeau
>
> Coercion of parameterless closures (lazy eval blocks) to SAM type arguments
> results in an NPE during static type checking.
> Example:
> {code}
> interface SamType {
> int sam()
> }
> int foo(SamType samt) {
> samt.sam()
> }
> @groovy.transform.TypeChecked
> void doFoo() {
> assert foo { -> 1 } == 1
> }
> doFoo()
> {code}
> Results in:
> {code}
> BUG! exception in phase 'instruction selection' in source unit
> 'ConsoleScript19' unexpected NullpointerException
> Caused by: java.lang.NullPointerException
> {code}
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