Sven Haster created MENFORCER-283:
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Summary: Java 9 banDuplicateClasses incorrectly sees
module-info.class as duplicate
Key: MENFORCER-283
URL: https://issues.apache.org/jira/browse/MENFORCER-283
Project: Maven Enforcer Plugin
Issue Type: Bug
Components: Plugin
Affects Versions: 1.4.1
Reporter: Sven Haster
Priority: Minor
When running the enforcer plugin with banDuplicateClasses rule against a
project with dependencies on java-9 compatible libraries which include a
module-info.class file, the plugin sees the multiple module-info files as
duplicate classes.
It should simply ignore these similar to package-info.
In our projects, it is the dependencies on multiple libs from org.ow2.asm which
provides the module-info class, rendering the following output:
{noformat}
[WARNING] Rule 2: org.apache.maven.plugins.enforcer.BanDuplicateClasses failed
with message:
Duplicate classes found:
Found in:
org.ow2.asm:asm-tree:jar:6.0:compile
org.ow2.asm:asm:jar:6.0:compile
org.ow2.asm:asm-util:jar:6.0:compile
Duplicate classes:
module-info.class
{noformat}
We can easily work around this problem for now by adding a global rule to
ignore module-info such as the following but it would be nice if the enforces
plugin ignored this file by default.
{code:xml}
<banDuplicateClasses>
<ignoreClasses>
<ignoreClass>module-info</ignoreClass>
</ignoreClasses>
</banDuplicateClasses>
{code}
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