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https://issues.apache.org/jira/browse/GROOVY-8339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831060#comment-16831060
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Daniel Sun commented on GROOVY-8339:
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For the Case ②, we have made Groovy a bit smarter to find the legal path to
access the members if existing.
When the legal path does not exist, e.g. accessing the `protected` members of
base class from sub-class, we will try to fix this kind of warnings in
GROOVY-9081. But we have to admit that this kind of warnings conform to the
visibility rule of Java, we just try to make Groovy "sophisticated" to avoid
the warnings automatically, or groovy users have to override the `protected`
members by hand, as a result, Groovy seems not that groovy then...
> 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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