https://issues.apache.org/bugzilla/show_bug.cgi?id=53754
Priority: P2
Bug ID: 53754
Assignee: [email protected]
Summary: javac -> getCurrentCompilerArgs() causes
NullPointerException
Severity: normal
Classification: Unclassified
Reporter: [email protected]
Hardware: Macintosh
Status: NEW
Version: 1.8.2
Component: Core tasks
Product: Ant
The following code causes NullPointerException in a normal javac task scenario:
@Test
public void testJavac() throws Exception {
Javac javac = new Javac();
Project project = new Project();
project.init();
javac.setProject(project);
javac.createCompilerArg();
javac.setFork(true);
javac.getCurrentCompilerArgs(); //NPE occurs
}
It is also reproducible with the simple build using <compilerarg/>:
<project name="project" default="all" basedir=".">
<target name="all">
<javac srcdir="./src" destdir="./buildbug" fork="true">
<compilerarg/>
</javac>
</target>
</project>
The stack trace:
BUILD FAILED
/buildproject.xml:5: java.lang.NullPointerException
at
org.apache.tools.ant.util.facade.FacadeTaskHelper.getArgs(FacadeTaskHelper.java:134)
at
org.apache.tools.ant.taskdefs.Javac.getCurrentCompilerArgs(Javac.java:748)
at
org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.addCurrentCompilerArgs(DefaultCompilerAdapter.java:550)
at
org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.setupJavacCommandlineSwitches(DefaultCompilerAdapter.java:328)
at
org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.setupModernJavacCommandlineSwitches(DefaultCompilerAdapter.java:340)
at
org.apache.tools.ant.taskdefs.compilers.JavacExternal.execute(JavacExternal.java:49)
at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1134)
at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.Main.runBuild(Main.java:809)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Ant version:
Apache Ant(TM) version 1.8.2 compiled on May 16 2012
Detected Java version: 1.6 in:
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Detected OS: Mac OS X
After some investigation I assume that the failing sequence is due to:
FacadeTaskHelper.getArgs() uses ImplementationSpecificArgument.getParts() ->
Commandline.Argument.getParts(), that returns null
and FacadeTaskHelper.getArgs() fails to handle the null value.
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