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  1. JDK
  2. JDK-8273039

JShell crashes when naming variable or method "abstract" or "strictfp"

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    Details

    • Subcomponent:
    • Introduced In Version:
      16
    • Resolved In Build:
      b25
    • CPU:
      generic
    • OS:
      generic

      Description

      ADDITIONAL SYSTEM INFORMATION :
      Tested with the JShells of the following JDK versions on Windows 10 Pro 20H2 (build 19042.1165):
      working in OpenJDK 64-Bit Server VM AdoptOpenJDK (build 15.0.2+7, mixed mode, sharing)
      crashing in OpenJDK 64-Bit Server VM Temurin-16.0.2+7 (build 16.0.2+7, mixed mode, sharing)
      crashing in OpenJDK 64-Bit Server VM (build 17+35-2724, mixed mode, sharing)
      crashing in OpenJDK 64-Bit Server VM (build 18-ea+11-557, mixed mode, sharing)

      A DESCRIPTION OF THE PROBLEM :
      In the JShell when naming a variable or method "abstract" or "strictfp", the JShell crashes with an InternalError. This happens since JDK 16 and also in latest JDK 17 and JDK 18. In JDK 9 until JDK 15 a normal error message is shown that "abstract" is nonsense in this place.
      Bug was possibly introduced by implementation of https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8247456

      REGRESSION : Last worked in version 15

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Open /path/to/jdk/bin/jshell.exe
      jshell> int abstract = 1;
      or
      jshell> int strictfp = 1;

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      JDK 15:
      jshell> int abstract = 1;
      | Error:
      | '.class' expected
      | int abstract = 1;
      | ^
      | Error:
      | class, interface, or enum expected
      | int abstract = 1;
      | ^-------^
      | Error:
      | unexpected type
      | required: value
      | found: class
      | int abstract = 1;
      | ^--^
      ACTUAL -
      JShell crashes with the following StackTrace (JDK 18, line numbers differ in other versions):
      Exception in thread "main" java.lang.InternalError: Exception during analyze - java.lang.AssertionError
              at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.analyze(TaskFactory.java:393)
              at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.<init>(TaskFactory.java:384)
              at jdk.jshell/jdk.jshell.TaskFactory.lambda$analyze$1(TaskFactory.java:177)
              at jdk.jshell/jdk.jshell.TaskFactory.lambda$runTask$4(TaskFactory.java:212)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskPool.getTask(JavacTaskPool.java:193)
              at jdk.jshell/jdk.jshell.TaskFactory.runTask(TaskFactory.java:205)
              at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:174)
              at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:160)
              at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:149)
              at jdk.jshell/jdk.jshell.ExpressionToTypeInfo.expressionInfo(ExpressionToTypeInfo.java:239)
              at jdk.jshell/jdk.jshell.Eval.processExpression(Eval.java:604)
              at jdk.jshell/jdk.jshell.Eval.lambda$sourceToSnippets$1(Eval.java:220)
              at jdk.jshell/jdk.jshell.TaskFactory.lambda$parse$6(TaskFactory.java:254)
              at jdk.jshell/jdk.jshell.TaskFactory.lambda$runTask$4(TaskFactory.java:212)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskPool.getTask(JavacTaskPool.java:193)
              at jdk.jshell/jdk.jshell.TaskFactory.runTask(TaskFactory.java:205)
              at jdk.jshell/jdk.jshell.TaskFactory.parse(TaskFactory.java:139)
              at jdk.jshell/jdk.jshell.TaskFactory.parse(TaskFactory.java:239)
              at jdk.jshell/jdk.jshell.Eval.sourceToSnippets(Eval.java:194)
              at jdk.jshell/jdk.jshell.Eval.eval(Eval.java:130)
              at jdk.jshell/jdk.jshell.JShell.eval(JShell.java:493)
              at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processSource(JShellTool.java:3618)
              at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processSourceCatchingReset(JShellTool.java:1342)
              at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processInput(JShellTool.java:1240)
              at jdk.jshell/jdk.internal.jshell.tool.JShellTool.run(JShellTool.java:1211)
              at jdk.jshell/jdk.internal.jshell.tool.JShellTool.start(JShellTool.java:995)
              at jdk.jshell/jdk.internal.jshell.tool.JShellToolBuilder.start(JShellToolBuilder.java:261)
              at jdk.jshell/jdk.internal.jshell.tool.JShellToolProvider.main(JShellToolProvider.java:120)
      Caused by: java.lang.IllegalStateException: java.lang.AssertionError
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:383)
              at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.analyze(TaskFactory.java:390)
              ... 27 more
      Caused by: java.lang.AssertionError
              at jdk.compiler/com.sun.tools.javac.comp.Attr.visitTree(Attr.java:5128)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$Visitor.visitModifiers(JCTree.java:3462)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCModifiers.accept(JCTree.java:2937)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:674)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.visitErroneous(Attr.java:5120)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCErroneous.accept(JCTree.java:3256)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:674)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:727)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.visitExec(Attr.java:2272)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1584)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:674)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribStat(Attr.java:748)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribStats(Attr.java:767)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1445)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1091)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:674)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribStat(Attr.java:748)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1235)
              at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:921)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:674)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribStat(Attr.java:748)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:5479)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribClass(Attr.java:5370)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attribClass(Attr.java:5201)
              at jdk.compiler/com.sun.tools.javac.comp.Attr.attrib(Attr.java:5146)
              at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1317)
              at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1290)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:404)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$analyze$1(JavacTaskImpl.java:379)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
              at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:379)
              ... 28 more

      ---------- BEGIN SOURCE ----------
      Shortest code in JShell:
      int abstract<RETURN>
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Don't write invalid Java code.
      "abstract" and "strictfp" give this result. Other keywords and modifiers "work" as expected (as they are giving a normal error message).

      FREQUENCY : always


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              Assignee:
              jlahoda Jan Lahoda
              Reporter:
              webbuggrp Webbug Group
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                Dates

                Created:
                Updated:
                Resolved: