Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-6651719

Compiler crashes possibly during forward reference of TypeParameter

    Details

    • Subcomponent:
    • Resolved In Build:
      b33
    • CPU:
      generic, x86
    • OS:
      generic, windows_xp
    • Verification:
      Not verified

      Description

      Description:
      Compiler crashes with an Assertion error for the following code:
      <code>
      class TestClass {

          public static void main(String... args) {
              MyClass<? extends MyClass<?, ?>, ? extends MyClass<?, ?>> gg = null;
          }
      }
      class MyClass<T extends S, S> {
      }
      </code>
      Compilation result is :
      <output>

      Following is the Error message:
      An exception has occurred in the compiler (1.7.0-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: isSubtype 15
              at com.sun.tools.javac.code.Types$5.visitType(Types.java:361)
              at com.sun.tools.javac.code.Types$5.visitType(Types.java:342)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visitWildcardType(Types.java:3185)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.isSubtype(Types.java:338)
              at com.sun.tools.javac.code.Types.isSubtypeNoCapture(Types.java:325)
              at com.sun.tools.javac.code.Types$8.visitWildcardType(Types.java:812)
              at com.sun.tools.javac.code.Types$8.visitWildcardType(Types.java:761)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.containsType(Types.java:758)
              at com.sun.tools.javac.code.Types.containsType(Types.java:725)
              at com.sun.tools.javac.code.Types.giveWarning(Types.java:2923)
              at com.sun.tools.javac.code.Types.access$300(Types.java:66)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:983)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:885)
              at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:568)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:876)
              at com.sun.tools.javac.comp.Check.checkExtends(Check.java:433)
              at com.sun.tools.javac.comp.Check.access$100(Check.java:55)
              at com.sun.tools.javac.comp.Check$Validator.visitTypeApply(Check.java:810)
              at com.sun.tools.javac.tree.JCTree$JCTypeApply.accept(JCTree.java:1840)
              at com.sun.tools.javac.comp.Check.validate(Check.java:745)
              at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:705)
              at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:709)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
              at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:425)
              at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:761)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:765)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
              at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:680)
              at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:653)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
              at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2740)
              at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2666)
              at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2602)
              at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1050)
              at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:779)
              at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:744)
              at com.sun.tools.javac.main.Main.compile(Main.java:386)
              at com.sun.tools.javac.main.Main.compile(Main.java:312)
              at com.sun.tools.javac.main.Main.compile(Main.java:303)
              at com.sun.tools.javac.Main.compile(Main.java:82)
              at com.sun.tools.javac.Main.main(Main.java:67)

      </output>
      <version>
      /net/sqindia/export/disk09/jdk/7/latest/binaries/solsparc/bin/java -version
      java version "1.7.0-ea"
      Java(TM) SE Runtime Environment (build 1.7.0-ea-b24)
      Java HotSpot(TM) Client VM (build 12.0-b01, mixed mode)

      uname -a
      SunOS bonsai 5.11 snv_49 i86pc i386 i86pc
      *** (#1 of 1): 2007-10-01 15:42:18 GMT+05:30 ###@###.###

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                mcimadamore Maurizio Cimadamore
                Reporter:
                duke J. Duke (Inactive)
              • Votes:
                0 Vote for this issue
                Watchers:
                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: