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https://issues.apache.org/jira/browse/GROOVY-8339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831815#comment-16831815
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Jochen Theodorou commented on GROOVY-8339:
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it is only an automatic module if you use it as a module (put it on the module
path). The way it is used most of the time currently is as anonymous module. As
for checkCanSetAccessible.... that looks very slow, but maybe it does already
cover a lot of cases...
> Fix warning "An illegal reflective access operation has occurred"
> -----------------------------------------------------------------
>
> Key: GROOVY-8339
> URL: https://issues.apache.org/jira/browse/GROOVY-8339
> Project: Groovy
> Issue Type: Improvement
> Components: groovy-jdk
> Affects Versions: 2.4.11, 2.4.15
> Environment: >gradle --version
> Gradle 4.2
> Build time: 2017-09-20 14:48:23 UTC
> Revision: 5ba503cc17748671c83ce35d7da1cffd6e24dfbd
> Groovy: 2.4.11
> Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015
> JVM: 9 (Oracle Corporation 9+181)
> OS: Windows 10 10.0 amd64
> Reporter: Benjamin Roedell
> Assignee: Daniel Sun
> Priority: Major
> Labels: security
> Fix For: 3.0.0-beta-1
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> I'm running JDK-9 on Windows 10 with Gradle 4.2.
> My global gradle.properties file contains the following line:
> org.gradle.java.home=C:/Program Files/Java/jdk-9
> When I request the gradle version (gradle --version) I get the following
> warning:
> {code:none}
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.codehaus.groovy.reflection.CachedClass
> (file:/C:/Program%20Files/gradle-4.2/lib/groovy-all-2.4.11.jar) to method
> java.lang.Object.finalize()
> WARNING: Please consider reporting this to the maintainers of
> org.codehaus.groovy.reflection.CachedClass
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> {code}
> This warning displayed regardless of whether I'm using a regular command
> prompt or an elevated rights (Administrator) command prompt.
> Here's the full command and output:
> {code:none}
> gradle --version
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.codehaus.groovy.reflection.CachedClass
> (file:/C:/Program%20Files/gradle-4.2/lib/groovy-all-2.4.11.jar) to method
> java.lang.Object.finalize()
> WARNING: Please consider reporting this to the maintainers of
> org.codehaus.groovy.reflection.CachedClass
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> ------------------------------------------------------------
> Gradle 4.2
> ------------------------------------------------------------
> Build time: 2017-09-20 14:48:23 UTC
> Revision: 5ba503cc17748671c83ce35d7da1cffd6e24dfbd
> Groovy: 2.4.11
> Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015
> JVM: 9 (Oracle Corporation 9+181)
> OS: Windows 10 10.0 amd64
> {code}
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