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Java 8編譯器錯誤 - 如何獲取更多信息?

[英]Java 8 compiler error - how to get more information?

我玩過Java 8 ea b72,但是我遇到了編譯器錯誤。 有沒有辦法從javac獲取更多信息,例如它目前正在處理的文件列表? 如果我有一個大概的想法,我可以找到一個解決辦法,直到問題得到解決。

只是為了記錄,這里是堆棧跟蹤(如果在IntelliJ IDEA,BTW之外編譯,它看起來相似):

An exception has occurred in the compiler (1.8.0-ea). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
java.lang.AssertionError: arraycode A
    at com.sun.tools.javac.jvm.Code.arraycode(Code.java:297)
    at com.sun.tools.javac.jvm.Gen.makeNewArray(Gen.java:1827)
    at com.sun.tools.javac.jvm.Gen.visitNewArray(Gen.java:1800)
    at com.sun.tools.javac.tree.JCTree$JCNewArray.accept(JCTree.java:1482)
    at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:893)
    at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:912)
    at com.sun.tools.javac.jvm.Gen.visitApply(Gen.java:1746)
    at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1391)
    at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:893)
    at com.sun.tools.javac.jvm.Gen.visitReturn(Gen.java:1715)
    at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1310)
    at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
    at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:718)
    at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:704)
    at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:755)
    at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1090)
    at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:835)
    at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
    at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:718)
    at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:968)
    at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:941)
    at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:723)
    at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
    at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2310)
    at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:751)
    at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1545)
    at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1509)
    at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:907)
    at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:866)
    at com.sun.tools.javac.main.Main.compile(Main.java:506)
    at com.sun.tools.javac.main.Main.compile(Main.java:365)
    at com.sun.tools.javac.main.Main.compile(Main.java:354)
    at com.sun.tools.javac.main.Main.compile(Main.java:345)
    at com.sun.tools.javac.Main.compile(Main.java:94)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:477)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.compileInProcess0(JavacCompiler.java:551)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.compileInProcess(JavacCompiler.java:526)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.compile(JavacCompiler.java:167)
    at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:678)
    at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:477)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:477)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)


    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:477)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:477)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

這是一個最后的手段,但您可以嘗試使用strace來監視javac正在打開的文件。 strace [your javac invocation] | grep '/directory/you/are/interested/in/ strace [your javac invocation] | grep '/directory/you/are/interested/in/可能會給你一些線索。

你試過javac的-verbose旗嗎? 可以使用如下的簡單ant腳本來啟用詳細的編譯器輸出,

<project name="verbose_compile" default="compile" basedir=".">
  ...
  <target name="compile">
      <javac srcdir="${src.dir}" 
         destdir="${build.dir}"
         executable="${java8.home}/bin/javac" 
         classpath="..."
         fork="true" 
         verbose="true" />
  </target>
</project>

(看起來像用戶屬性maven.compiler.verbose會在maven中完成同樣的事情。)

我剛遇到類似的情況。 在Windows上,詳細輸出顯示正在錯誤之前編譯的類。 希望這將有助於您縮小解決問題的范圍。

這不是您的問題的解決方案。 也許你可以弄清楚這可能出了什么問題。

下面是拋出“AssertionError”的方法。

/** Given a type, return its code for allocating arrays of that type.
*/
public static int arraycode(Type type)
{
    switch (type.tag)
    {
        case BYTE: return 8;
        case BOOLEAN: return 4;
        case SHORT: return 9;
        case CHAR: return 5;
        case INT: return 10;
        case LONG: return 11;
        case FLOAT: return 6;
        case DOUBLE: return 7;
        case CLASS: return 0;
        case ARRAY: return 1;
        default: throw new AssertionError("arraycode " + type);
    }
}

你可以在這里找到com.sun.tools.javac.jvm.Code類的實現(我找不到這個類的正確版本,因為這個類錯誤在第298行引發,在你的情況下是297) 。 它可能有所幫助。

我找到了鏈接, 錯誤ID = 4901611 ,顯示了以前版本的Java中的類似錯誤。 版本是Java 1.5。 在此鏈接中,您會發現當“使用vararg的泛型方法”獲得意外輸入導致AssertionError時會發生此類錯誤。 沒有解決方法,並在下次更新中修復:(

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