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https://issues.apache.org/jira/browse/MCOMPILER-317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282467#comment-16282467
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Robert Scholte commented on MCOMPILER-317:
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You can try plexus-java-0.9.6-SNAPSHOT from
https://oss.sonatype.org/content/repositories/plexus-snapshots/
But it looks like there's more going on. Running with debug you'll see the
classpath parameter (untouched) and it's order is already different to what I
expect. There might be a deeper problem here and all plugins using the
classpath will have this issue.
> Plugin generates wrong modulepath (dependencies listed in wrong order)
> ----------------------------------------------------------------------
>
> Key: MCOMPILER-317
> URL: https://issues.apache.org/jira/browse/MCOMPILER-317
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.7.0
> Environment: Apache Maven 3.5.2
> (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T03:58:13-04:00)
> Maven home: C:\Program Files\apache-maven-3.5.2\bin\..
> Java version: 9.0.1, vendor: Oracle Corporation
> Java home: C:\Program Files\Java\jdk-9.0.1
> Default locale: en_CA, platform encoding: Cp1252
> OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
> Reporter: Gili
>
> Testcase: https://github.com/cowwoc/maven-java9-class-shadowing
> If a project contains dependencies with the same module name (which is valid
> according to https://stackoverflow.com/a/46573805/14731) then
> maven-compile-plugin invokes {{javac}} with a modulepath containing
> dependencies in an (apparently) arbitrary order. If I place the project in
> one directory, I get one order. If I place the project in another directory,
> I get another order. This is 100% reproducible across multiple runs, across
> different computers.
> I suspect that somewhere deep inside the code someone is using {{HashMap}}
> which is leading to undefined iteration order depending on the path being
> used.
> Expected behavior: dependencies should be listed in the same order as
> declared in pom.xml (see https://stackoverflow.com/a/793193/14731)
> Actual behavior: regardless of whether I list {{ExtensionPresent}} before or
> after {{MyLibrary}}, the wrong order gets passed to {{javac}}.
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