Launchpad has imported 2 comments from the remote bug at https://bugzilla.opensuse.org/show_bug.cgi?id=1074162.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2017-12-28T06:56:33+00:00 k463 wrote: The `jrt-fs.jar` shipped in `java-9-openjdk-headless` package is not compatible with Java 8, which is apparently necessary for some development tools that themselves run on Java 8 to be able to use the Java 9 JDK shipped in this package. One example of this is Intellij IDEA, which means currently it's unable to use openSUSE provided Java 9 JDK as a project JDK. A detailed explanation of the issue can be found on OpenJDK bugtracker [1] and also a test program and steps to reproduce can be found on Ubuntu bugtracker for their corresponding package [2]. The steps are: 1. zypper in java-9-openjdk-headless java-1_8_0-openjdk-headless 2. download `ReadJrt.java` from [2] 3. /usr/lib64/jvm/java-1.8.0/bin/javac ReadJrt.java 4. /usr/lib64/jvm/java-1.8.0/bin/java ReadJrt /usr/lib64/jvm/java-9/ [1] https://bugs.openjdk.java.net/browse/JDK-8174808 [2] https://bugs.launchpad.net/ubuntu/+source/openjdk-9/+bug/1727002 Reply at: https://bugs.launchpad.net/ubuntu/+source/openjdk-9/+bug/1727002/comments/4 ------------------------------------------------------------------------ On 2017-12-28T07:16:27+00:00 k463 wrote: Also relevant bug in Intellij IDEA: https://youtrack.jetbrains.com/issue/IDEA-179481 Reply at: https://bugs.launchpad.net/ubuntu/+source/openjdk-9/+bug/1727002/comments/6 ** Changed in: opensuse Status: Unknown => Confirmed ** Changed in: opensuse Importance: Unknown => Medium -- You received this bug notification because you are a member of OpenJDK, which is subscribed to openjdk-9 in Ubuntu. https://bugs.launchpad.net/bugs/1727002 Title: lib/jrt-fs.jar is incompatible with Java 8 Status in openjdk-9 package in Ubuntu: Confirmed Status in openjdk-9 package in Debian: Unknown Status in openSUSE: Confirmed Bug description: A program running on Java 8 should be able to use the library to peek inside Java 9 (JEP 220 "Modular Run-Time Images" [1], section "New URI scheme ..."). Steps to reproduce: 1. Download an attached program 2. `apt install openjdk-8-jdk openjdk-9-jdk` 3. `/usr/lib/jvm/java-8-openjdk-amd64/bin/javac ReadJrt.java` 4. `/usr/lib/jvm/java-8-openjdk-amd64/bin/java ReadJrt /usr/lib/jvm/java-9-openjdk-amd64` Expected result: The program lists root directories of a runtime image (/packages, /modules) and finishes normally. Actual result: The program fails with the following exception: Exception in thread "main" java.lang.NoSuchMethodError: java.nio.ByteBuffer.limit(I)Ljava/nio/ByteBuffer; at jdk.internal.jimage.BasicImageReader.slice(BasicImageReader.java:211) at jdk.internal.jimage.BasicImageReader.intBuffer(BasicImageReader.java:218) at jdk.internal.jimage.BasicImageReader.<init>(BasicImageReader.java:152) at jdk.internal.jimage.ImageReader$SharedImageReader.<init>(ImageReader.java:224) at jdk.internal.jimage.ImageReader$SharedImageReader.open(ImageReader.java:238) at jdk.internal.jimage.ImageReader.open(ImageReader.java:67) at jdk.internal.jimage.ImageReader.open(ImageReader.java:71) at jdk.internal.jrtfs.SystemImage.open(SystemImage.java:59) at jdk.internal.jrtfs.JrtFileSystem.<init>(JrtFileSystem.java:90) at jdk.internal.jrtfs.JrtFileSystemProvider.newFileSystem(JrtFileSystemProvider.java:108) at java.nio.file.FileSystems.newFileSystem(FileSystems.java:336) at ReadJrt.main(ReadJrt.java:33) Probable reason: Classes in lib/jrt-fs.jar were compiled by Java 9 with options "-source 8"/"target 8". They should be compiled with "--release 8" option instead (or by Java 8). [1] http://openjdk.java.net/jeps/220 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: openjdk-9-jre-headless 9~b181-4 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Oct 24 20:06:01 2017 InstallationDate: Installed on 2017-09-29 (25 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926) SourcePackage: openjdk-9 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openjdk-9/+bug/1727002/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~openjdk Post to : openjdk@lists.launchpad.net Unsubscribe : https://launchpad.net/~openjdk More help : https://help.launchpad.net/ListHelp
