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http://jira.codehaus.org/browse/MCOMPILER-120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=269664#action_269664
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Alex Ioffe commented on MCOMPILER-120:
--------------------------------------
Just a little clarification, in the inner pom
(werror.zip/warningsbuild/pom.xml) file you will see an entry for
plexus-compiler-javac version '1.8.2-SNAPSHOT'. In order to run the integration
test, go to the outer pom file (werror.zip/pom.xml) and run 'mvn test' which
will run the integration test.
This integration test does nothing more then call 'mvn compile' on the inner
pom file and then checks the output/return code of it. In order to successfully
pass the test, the inner pom file should fail the build and have a return code
1.
In order to have this integration test pass, you have to get the code for
plexus-compiler-javac (svn info here:
http://plexus.codehaus.org/plexus-utils/source-repository.html), make the code
change to the JavacCompiler, and then deploy it to a local repo. The inner pom
file will pick it up, the inner build will fail, and the integration test will
pass.
> Javac compiler plugin doesn't support -Werror
> ---------------------------------------------
>
> Key: MCOMPILER-120
> URL: http://jira.codehaus.org/browse/MCOMPILER-120
> Project: Maven 2.x Compiler Plugin
> Issue Type: Bug
> Affects Versions: 2.1
> Reporter: Christopher Webster
> Attachments: JavacCompiler.java, JavacCompiler.patch,
> trial-maven.zip, werror.zip
>
>
> If I write a pom file like the following:
> ...
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-compiler-plugin</artifactId>
> <version>2.1</version>
> <configuration>
> <compilerId>javac</compilerId>
> <source>1.6</source>
> <target>1.6</target>
>
> <compilerArguments>
> <Werror />
> <Xlint:all />
> </compilerArguments>
> <showDeprecation>true</showDeprecation>
> </configuration>
> </plugin>
> and if there are only warnings, then the build will not fail as intended by
> the compiler Argument. The reason is that in compileInProcess the exit code
> from javac is only considered if there are no messages. In the case of
> treating warnings as errors, there will be messages but no errors so the
> intention of the build failure is lost.
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