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  1. JDK
  2. JDK-8249095

tools/javac/launcher/SourceLauncherTest.java fails on Windows

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    • b19
    • generic
    • windows

        On Windows the test tools/javac/launcher/SourceLauncherTest.java fails.
        This is due to a perennial problem, and manifests when a file is created with a Windows reserved names, please see the following:
        https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file?redirectedfrom=MSDN#file_and_directory_names

        The error is this:
        https://hg.openjdk.java.net/jdk/jdk/file/c1f532e5f910/test/langtools/tools/javac/launcher/SourceLauncherTest.java#l428

        Exception running test testNoSourceOnClassPath: java.nio.file.NoSuchFileException: testNoSourceOnClassPath\auxSrc\Aux.java
        java.nio.file.NoSuchFileException: testNoSourceOnClassPath\auxSrc\Aux.java
                at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85)
                at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
                at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
                at java.base/sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:235)
                at java.base/java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:478)
                at java.base/java.nio.file.Files.newOutputStream(Files.java:219)
                at java.base/java.nio.file.Files.newBufferedWriter(Files.java:2919)
                at java.base/java.nio.file.Files.newBufferedWriter(Files.java:2962)
                at toolbox.ToolBox$JavaSource.write(ToolBox.java:636)
                at toolbox.ToolBox.writeJavaFiles(ToolBox.java:565)
                at SourceLauncherTest.testNoSourceOnClassPath(SourceLauncherTest.java:269)
                at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
                at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
                at java.base/java.lang.reflect.Method.invoke(Method.java:566)
                at toolbox.TestRunner.runTests(TestRunner.java:89)
                at SourceLauncherTest.main(SourceLauncherTest.java:63)
                at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
                at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
                at java.base/java.lang.reflect.Method.invoke(Method.java:566)
                at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
                at java.base/java.lang.Thread.run(Thread.java:834)

        Here is an example using java source launcher:

        $ cat Test.java
        import java.io.*;
        import java.nio.file.*;
        public class Test {
            public static void main(String... args) throws Exception {
        if (args == null || args.length < 1) {
                    throw new Error("Usage: need one pathspec argument");
        }
                Path file = Path.of(args[0]);
        Files.createDirectories(file.getParent());
        try (BufferedWriter out = Files.newBufferedWriter(file)) {
                    out.write("An auk or alcid is a bird of the family of Alcidae.");
        }
            }
        }

        $ BLAH/images/jdk/bin/java Test.java foo/Aux.java
        Exception in thread "main" java.nio.file.NoSuchFileException: foo\Aux.java
                at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85)
                at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
                at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
                at java.base/sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:235)
                at java.base/java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:478)
                at java.base/java.nio.file.Files.newOutputStream(Files.java:219)
                at java.base/java.nio.file.Files.newBufferedWriter(Files.java:2919)
                at java.base/java.nio.file.Files.newBufferedWriter(Files.java:2962)
                at Test.main(Test.java:16)

        $ BLAH/images/jdk/bin/java Test.java foo/Auk.java
        $ cat foo/Auk.java
        An auk or alcid is a bird of the family of Alcidae.


        So changing the name from Aux.java or class Aux to Auk will work for the test. I am not sure why javac did not catch this please see JDK-6241975.

        I discovered this with jdk11.0.8 and why hasn't anyone else encountered this issue ?

        My suggestion is to enhance toolbox and other test helpers to check for these reserved keywords and warn the developer up front.

        Running on Windows Server 2016.

              jjg Jonathan Gibbons
              ksrini Kumar Srinivasan
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