[MENFORCER-156] Upgrading maven-enforcer-plugin from 1.2 to 1.3 breaks maven-assembly-plugin

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.3
• Fix Version/s: 1.3.1
• Environment: Ubuntu 12.04 fully patched / Maven 3.0.5 / Oracle Java 1.7.0_25
• Assignee: Robert Scholte
• Reporter: Wolf Geldmacher
• Created: 03/Jul/13 09:49
• Updated: 19/Sep/18 16:07
• Resolved: 04/Jul/13 15:01

Description

After upgrading m-e-p from 1.2 to 1.3 the maven-assembly-plugin generates the following error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.4:single (assemble) on project extjars: Execution assemble of goal org.apache.maven.plugins:maven-assembly-plugin:2.4:single failed. NullPointerException -> [Help 1]

Downgrading to m-e-p 1.2 makes the assembly work again.

Sample pom & assembly that expose the error attached.

When called via:
mvn -Dplugins.maven-enforcer-plugin.version=1.2
a zip file is generated as expected, when called via
mvn -Dplugins.maven-enforcer-plugin.version=1.3
(or without argument) you will get the NPE.

Issue Links

• breaks: MENFORCER-230 Document support for transitive dependencies in enforcer plugins
• breaks: MENFORCER-194 Rule RequireSameVersions: dependency artifacts are not checked
• is related to: MENFORCER-248 Upgrading maven-enforcer-plugin to 1.4.1 breaks maven-assembly-plugin
• relates to: MENFORCER-318 Upgrading maven-enforcer-plugin from 1.4 to 1.4.1 or higher breaks maven-assembly-plugin
• supercedes: MASSEMBLY-659 Nullpointer in assembly:single when enforcer plugin v1.3 used