[
https://issues.apache.org/jira/browse/GROOVY-7742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
John Wagenleitner updated GROOVY-7742:
--------------------------------------
Priority: Major (was: Blocker)
> CompileStatic stackoverflow with generic method with different placeholder as
> type argument
> -------------------------------------------------------------------------------------------
>
> Key: GROOVY-7742
> URL: https://issues.apache.org/jira/browse/GROOVY-7742
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Affects Versions: 2.4.6, 2.5.0-beta-1
> Reporter: John Wagenleitner
>
> The fix in [commit
> fae29119a|https://github.com/apache/groovy/commit/fae29119a1102393ae5d1645c3fc1e06547b0ad8]
> for master and [commit
> 197472cb|https://github.com/apache/groovy/commit/197472cb626bdada5e079c7f0cd145b85502f034]
> for 2.4 branch corrected behavior that as a result can create a
> stackoverflow:
> To reproduce compile the following:
> {code}
> @groovy.transform.CompileStatic
> class Foo {
> public <T> Class<T> firstClass(List<Class<T>> classes) {
> return classes.first()
> }
> }
> {code}
> If you change the placeholder from {{T}} to {{E}} (the placeholder used by
> List) it compiles successfully. The
> [{{StaticTypeCheckingSupport#applyGenericConnections}} method
> |https://github.com/apache/groovy/blob/d6bb5b8ff84b57c2c337c3db5008103b7c6d13d5/src/main/org/codehaus/groovy/transform/stc/StaticTypeCheckingSupport.java#L1509]
> receives both {{E}} and {{T}} in the {{resolvePlaceholders}} map and because
> there is no connection and with the fix to {{equalIncludingGenerics}} a
> stackoverflow results.
> Stacktrace produced:
> {code}
> java.lang.StackOverflowError
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContext(StaticTypeCheckingSupport.java:1722)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContext(StaticTypeCheckingSupport.java:1750)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContext(StaticTypeCheckingSupport.java:1722)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.applyGenericsContext(StaticTypeCheckingSupport.java:1750)
> {code}
> Found as a result of testing master against a Grails build and noticing a
> stackoverflow when compiling [a method within
> GparsPromiseFactory|https://github.com/jwagenleitner/grails-core/blob/69e7bb967fb8e8e331927cf2521b48cea93ee059/grails-async/src/main/groovy/org/grails/async/factory/gpars/GparsPromiseFactory.groovy#L106-L109]
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
