FULL PRODUCT VERSION :
javac 9.0.4

ADDITIONAL OS VERSION INFORMATION :
Kernel: Linux middleearth 4.14.27-gentoo #1 SMP Tue Mar 20 09:47:26 CET 2018 x86_64 GNU/Linux
Userspace: Debian i386

A DESCRIPTION OF THE PROBLEM :
compilation bails out with java.nio.file.ReadOnlyFileSystemException


For additional info see
https://buildd.debian.org/status/fetch.php?pkg=gdcm&arch=x32&ver=2.8.4-1%2Bb1&stamp=1521789107&raw=0


REGRESSION. Last worked in version 8u162

ADDITIONAL REGRESSION INFORMATION:
javac 1.8.0_162


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the Debian package gdcm in a clean changeroot using the latest version of openjdk-9

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
package builds
ACTUAL -
Package fails to build

ERROR MESSAGES/STACK TRACES THAT OCCUR :
An exception has occurred in the compiler (9.0.4). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.nio.file.ReadOnlyFileSystemException
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.checkWritable(ZipFileSystem.java:147)
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.newOutputStream(ZipFileSystem.java:499)
at jdk.zipfs/jdk.nio.zipfs.ZipPath.newOutputStream(ZipPath.java:840)
at jdk.zipfs/jdk.nio.zipfs.ZipFileSystemProvider.newOutputStream(ZipFileSystemProvider.java:283)
at java.base/java.nio.file.Files.newOutputStream(Files.java:218)
at jdk.compiler/com.sun.tools.javac.file.PathFileObject.openOutputStream(PathFileObject.java:459)
at jdk.compiler/com.sun.tools.javac.jvm.ClassWriter.writeClass(ClassWriter.java:1677)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:743)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1621)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1589)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:959)
at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:302)
at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:162)
at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:57)
at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:43)
make[4]: *** [Utilities/VTK/CMakeFiles/VTKGDCMJavaJar.dir/build.make:64: bin/vtkgdcm.jar] Erro


REPRODUCIBILITY :
This bug can be reproduced often.