[BUG?] The quarkus-maven-plugin (generate-code-tests) reads outside the project.

[nielsbasjes]

I have a Maven based Java project for which I want to add a Quarkus based rest & graphql servlet.
Because of dependency reasons I have created a subdirectory in my project without making it a module and without defining a parent in the quarkus pom.xml.

When I place this subdirectory in my existing maven project I have the problems I try to avoid.
When I place this subdirectory "anywhere" else it works as expected.

This baffled me so after several attempts to figure it out I deliberately broke the pom.xml of the parent directory which is outside the project I'm trying to build.
I made it an invalid XML by putting xxxxx somewhere it shouldn't be so anything you try with it must fail.

If I simply do mvn clean compile it all still works because this broken pom.xml is outside my project and maven does not read it:

$ mvn clean compile
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------< nl.basjes.parse.useragent:yauaa-webapp >---------------
[INFO] Building Yauaa : Web Servlet 7.3.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ yauaa-webapp ---
[INFO] Deleting /home/nbasjes/workspace/Prive/yauaa/webapp/yauaa-webapp/target
[INFO] 
[INFO] --- git-commit-id-maven-plugin:5.0.0:revision (get-the-git-infos) @ yauaa-webapp ---
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ yauaa-webapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 27 resources
[INFO] 
[INFO] --- quarkus-maven-plugin:2.10.1.Final:generate-code (default) @ yauaa-webapp ---
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ yauaa-webapp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 23 source files to /home/nbasjes/workspace/Prive/yauaa/webapp/yauaa-webapp/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  7.993 s
[INFO] Finished at: 2022-07-10T12:30:57+02:00
[INFO] ------------------------------------------------------------------------

As you can clearly see this broken pom.xml in the upper directory is correctly ignored.
Also the quarkus-maven-plugin:2.10.1.Final:generate-code does not read it (which is correct)

When I want to take the build a step further (test phase) I get this:

$ mvn clean test
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------< nl.basjes.parse.useragent:yauaa-webapp >---------------
[INFO] Building Yauaa : Web Servlet 7.3.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ yauaa-webapp ---
[INFO] Deleting /home/nbasjes/workspace/Prive/yauaa/webapp/yauaa-webapp/target
[INFO] 
[INFO] --- git-commit-id-maven-plugin:5.0.0:revision (get-the-git-infos) @ yauaa-webapp ---
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ yauaa-webapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 27 resources
[INFO] 
[INFO] --- quarkus-maven-plugin:2.10.1.Final:generate-code (default) @ yauaa-webapp ---
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ yauaa-webapp ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 23 source files to /home/nbasjes/workspace/Prive/yauaa/webapp/yauaa-webapp/target/classes
[INFO] 
[INFO] --- quarkus-maven-plugin:2.10.1.Final:generate-code-tests (default) @ yauaa-webapp ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  3.670 s
[INFO] Finished at: 2022-07-10T12:33:43+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal io.quarkus.platform:quarkus-maven-plugin:2.10.1.Final:generate-code-tests (default) on project yauaa-webapp: Quarkus code generation phase has failed: Failed to initialize Quarkus bootstrap Maven artifact resolver: Failed to load current project at /home/nbasjes/workspace/Prive/yauaa/webapp/yauaa-webapp/pom.xml: Failed to read /home/nbasjes/workspace/Prive/yauaa/webapp/pom.xml: Failed to parse POM: expected START_TAG or END_TAG not TEXT (position: TEXT seen ...<dependencies>\nxxxxx\n    <d... @42:7) -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

Why is the quarkus-maven-plugin (version 2.10.1.Final) going to read files outside of the project during the generate-code-tests goal?

Is this a bug in this plugin or am I missing something?

How do I tell it to stop doing this?

---

Minimal reproduction:

mkdir /tmp/quarkustest
cd /tmp/quarkustest

quarkus create app org.acme:getting-started --extension=resteasy-reactive
cd getting-started

echo xxxx > /tmp/quarkustest/pom.xml

quarkus dev

[quarkus-bot[bot]]

/cc @quarkusio/devtools