[jira] [Created] (MCOMPILER-291) No possible use compilerArgs arg "-J--add-opens" multiple times

[Pascal Schumacher (JIRA)]

Pascal Schumacher created MCOMPILER-291:
-------------------------------------------

             Summary: No possible use compilerArgs arg "-J--add-opens" multiple 
times
                 Key: MCOMPILER-291
                 URL: https://issues.apache.org/jira/browse/MCOMPILER-291
             Project: Maven Compiler Plugin
          Issue Type: Bug
    Affects Versions: 3.6.1
            Reporter: Pascal Schumacher


I'm trying to a project with uses lombok to work with java 9.

{code}
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.6.1</version>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <fork>true</fork>
        <compilerArgs>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
                
<arg>-J--add-opens</arg><arg>-Jjdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
            </compilerArgs>
    </configuration>
</plugin>
{code}

{code}mvn -X compile{code} shows me that the {code}-J--add-opens{code} 
arguments are collapsed:

{code}
cmd.exe /X /C ""C:\Program Files\Java\jdk-9\bin\javac.exe" 
@C:/Users/User/random-beans/random-beans/target/classes/org.codehaus.plexus.compiler.javac.JavacCompiler9403484282707867963arguments
 -J--add-opens -Jjdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED 
-Jjdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"
{code}

which results in:

{code}Error: Main Class jdk.compiler.com.sun.tools.javac.util=ALL-UNNAMED could 
not be found or load{code}



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