FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
Darwin Alans-iMac 16.7.0 Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64 x86_64


A DESCRIPTION OF THE PROBLEM :
Packager fails with AssertionError if bundled application already exists.

Bug report requested by Chris Benson.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Go to modules/jdk.packager/src/test/examples/antswingapp

Run ant twice.


ERROR MESSAGES/STACK TRACES THAT OCCUR :
BUILD FAILED
/Volumes/A/JDK/rt/modules/jdk.packager/src/test/examples/antswingapp/build.xml:52: java.lang.AssertionError: Duplicate entry!
at jdk.jlink/jdk.tools.jlink.builder.DefaultImageBuilder.lambda$storeFiles$1(DefaultImageBuilder.java:176)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1492)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:430)
at jdk.jlink/jdk.tools.jlink.builder.DefaultImageBuilder.storeFiles(DefaultImageBuilder.java:171)
at jdk.jlink/jdk.tools.jlink.internal.ImagePluginStack.storeFiles(ImagePluginStack.java:498)
at jdk.jlink/jdk.tools.jlink.internal.ImageFileCreator.writeImage(ImageFileCreator.java:166)
at jdk.jlink/jdk.tools.jlink.internal.ImageFileCreator.create(ImageFileCreator.java:100)
at jdk.jlink/jdk.tools.jlink.internal.JlinkTask$ImageHelper.retrieve(JlinkTask.java:768)
at jdk.jlink/jdk.tools.jlink.internal.ImagePluginStack.operate(ImagePluginStack.java:206)
at jdk.jlink/jdk.tools.jlink.internal.JlinkTask.createImage(JlinkTask.java:318)
at jdk.jlink/jdk.tools.jlink.internal.Jlink.build(Jlink.java:321)
at jdk.jlink/jdk.tools.jlink.internal.packager.AppRuntimeImageBuilder.build(AppRuntimeImageBuilder.java:134)
at jdk.packager/jdk.packager.internal.JLinkBundlerHelper.execute(JLinkBundlerHelper.java:351)
at jdk.packager/com.oracle.tools.packager.mac.MacAppBundler.doBundle(MacAppBundler.java:359)
at jdk.packager/com.oracle.tools.packager.mac.MacAppBundler.execute(MacAppBundler.java:437)
at jdk.packager/com.sun.javafx.tools.packager.PackagerLib.generateNativeBundles(PackagerLib.java:371)
at jdk.packager/com.sun.javafx.tools.packager.PackagerLib.generateDeploymentPackages(PackagerLib.java:348)
at com.sun.javafx.tools.ant.DeployFXTask.execute(DeployFXTask.java:310)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
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:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
at org.apache.tools.ant.Main.runBuild(Main.java:853)
at org.apache.tools.ant.Main.startAnt(Main.java:235)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:285)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:112)
Caused by: java.nio.file.FileAlreadyExistsException: output/Test.app/Contents/PlugIns/Java.runtime/Contents/Home/lib/libprefs.dylib
at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:94)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
at java.base/sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:215)
at java.base/java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
at java.base/java.nio.file.Files.newOutputStream(Files.java:218)
at java.base/java.nio.file.Files.copy(Files.java:3071)
at jdk.jlink/jdk.tools.jlink.builder.DefaultImageBuilder.writeEntry(DefaultImageBuilder.java:439)
at jdk.jlink/jdk.tools.jlink.builder.DefaultImageBuilder.accept(DefaultImageBuilder.java:399)
at jdk.jlink/jdk.tools.jlink.builder.DefaultImageBuilder.lambda$storeFiles$1(DefaultImageBuilder.java:173)
... 41 more


REPRODUCIBILITY :
This bug can be reproduced always.