java.lang.AssertionError: isSubClass C

JDK Bug System | Webbug Group | 4 months ago
  1. 0

    FULL PRODUCT VERSION : A DESCRIPTION OF THE PROBLEM : Compiling the two attached trivial classes leads to the following compiler-failure: An exception has occurred in the compiler (1.8.0_91). 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.lang.AssertionError: isSubClass C at com.sun.tools.javac.code.Symbol.isSubClass(Symbol.java:447) at com.sun.tools.javac.code.Symbol.isMemberOf(Symbol.java:456) Reproduced with the java-versions 1.8.0_102, 1.8.0_101, 1.8.0_91, 1.8.0_66. A (mysterious) role plays the method "public boolean close(long timeout)" in the class B: if it doesn't exist, the error doesn't occur. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : Compile the attached two classes with javac on the command-line (eg. javac *.java). ERROR MESSAGES/STACK TRACES THAT OCCUR : An exception has occurred in the compiler (1.8.0_91). 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.lang.AssertionError: isSubClass C at com.sun.tools.javac.code.Symbol.isSubClass(Symbol.java:447) at com.sun.tools.javac.code.Symbol.isMemberOf(Symbol.java:456) at com.sun.tools.javac.code.Symbol$MethodSymbol.overrides(Symbol.java:1479) at com.sun.tools.javac.code.Types$ImplementationCache.implementationInternal(Types.java:2693) at com.sun.tools.javac.code.Types$ImplementationCache.get(Types.java:2675) at com.sun.tools.javac.code.Types.implementation(Types.java:2704) at com.sun.tools.javac.code.Symbol$MethodSymbol.implementation(Symbol.java:1539) at com.sun.tools.javac.code.Symbol$MethodSymbol.implementation(Symbol.java:1528) at com.sun.tools.javac.comp.Resolve.notOverriddenIn(Resolve.java:419) at com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:405) at com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:365) at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1457) at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1627) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1719) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1671) at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2424) at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3083) at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3334) at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2421) at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2415) at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2410) at com.sun.tools.javac.comp.Attr.checkAutoCloseable(Attr.java:1389) at com.sun.tools.javac.comp.Attr.visitTry(Attr.java:1335) at com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1173) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:651) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1114) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1003) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4340) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4248) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4177) at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4152) at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248) at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901) at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860) at com.sun.tools.javac.main.Main.compile(Main.java:523) at com.sun.tools.javac.main.Main.compile(Main.java:381) at com.sun.tools.javac.main.Main.compile(Main.java:370) at com.sun.tools.javac.main.Main.compile(Main.java:361) at com.sun.tools.javac.Main.compile(Main.java:56) at com.sun.tools.javac.Main.main(Main.java:42) REPRODUCIBILITY : This bug can be reproduced always. ---------- BEGIN SOURCE ---------- abstract class B implements AutoCloseable { @Override public void close() { } public boolean close(long timeout) { return true; } } public abstract class A<C extends B> { abstract C newCloseable(); void m() throws Exception{ try(C p= newCloseable()){ } } } ---------- END SOURCE ----------

    JDK Bug System | 4 months ago | Webbug Group
    java.lang.AssertionError: isSubClass C
  2. 0

    is this a javac bug or some error in my code

    Stack Overflow | 5 years ago | Charbel
    java.lang.AssertionError: {rawtypes}
  3. Speed up your debug routine!

    Automated exception search integrated into your IDE

  4. 0

    [JDK-8129589] Javac fails with assertion error when lambda types are not specified - Java Bug System

    java.net | 1 year ago
    java.lang.AssertionError: attribution shouldn't be happening here
  5. 0

    Bug ID: JDK-8056984 Exception in compiler: java.lang.AssertionError: isSubClass T

    java.com | 3 months ago
    java.lang.AssertionError: isSubClass T

    Not finding the right solution?
    Take a tour to get the most out of Samebug.

    Tired of useless tips?

    Automated exception search integrated into your IDE

    Root Cause Analysis

    1. java.lang.AssertionError

      isSubClass C

      at com.sun.tools.javac.code.Symbol.isSubClass()
    2. Java Tools
      Main.main
      1. com.sun.tools.javac.code.Symbol.isSubClass(Symbol.java:447)
      2. com.sun.tools.javac.code.Symbol.isMemberOf(Symbol.java:456)
      3. com.sun.tools.javac.code.Symbol$MethodSymbol.overrides(Symbol.java:1479)
      4. com.sun.tools.javac.code.Types$ImplementationCache.implementationInternal(Types.java:2693)
      5. com.sun.tools.javac.code.Types$ImplementationCache.get(Types.java:2675)
      6. com.sun.tools.javac.code.Types.implementation(Types.java:2704)
      7. com.sun.tools.javac.code.Symbol$MethodSymbol.implementation(Symbol.java:1539)
      8. com.sun.tools.javac.code.Symbol$MethodSymbol.implementation(Symbol.java:1528)
      9. com.sun.tools.javac.comp.Resolve.notOverriddenIn(Resolve.java:419)
      10. com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:405)
      11. com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:365)
      12. com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1457)
      13. com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1627)
      14. com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1719)
      15. com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1671)
      16. com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2424)
      17. com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3083)
      18. com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3334)
      19. com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2421)
      20. com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2415)
      21. com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2410)
      22. com.sun.tools.javac.comp.Attr.checkAutoCloseable(Attr.java:1389)
      23. com.sun.tools.javac.comp.Attr.visitTry(Attr.java:1335)
      24. com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1173)
      25. com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
      26. com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
      27. com.sun.tools.javac.comp.Attr.attribStats(Attr.java:651)
      28. com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1114)
      29. com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
      30. com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
      31. com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
      32. com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1003)
      33. com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
      34. com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
      35. com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
      36. com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4340)
      37. com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4248)
      38. com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4177)
      39. com.sun.tools.javac.comp.Attr.attrib(Attr.java:4152)
      40. com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
      41. com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
      42. com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
      43. com.sun.tools.javac.main.Main.compile(Main.java:523)
      44. com.sun.tools.javac.main.Main.compile(Main.java:381)
      45. com.sun.tools.javac.main.Main.compile(Main.java:370)
      46. com.sun.tools.javac.main.Main.compile(Main.java:361)
      47. com.sun.tools.javac.Main.compile(Main.java:56)
      48. com.sun.tools.javac.Main.main(Main.java:42)
      48 frames