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  1. JDK
  2. JDK-6676045

StackOverFlowError during instantiation of generic type

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    • generic
    • generic

    Description

      Description:
      StackOverFlowError while compiling the following code during instantiation of generic type. This bug is directly related to bug 6651719 except for the change in the code where upper bound of S is MyClass<T,S>. Even using other parameterized bounds like java.util.LinkedList<T> crashes. Not sure if fix for bug 6651719 would resolve this issue. Hence filing this as a separate CR.
      <code>
      class TestClass {

          public void method1(MyClass<? extends MyClass<?, ?>, ? extends MyClass<?, ?>> m1) {
               
          }
      }
      class MyClass<T extends S, S extends MyClass<T,S>> { // changing it to S extends java.util.List<T> crashes too
      }
      </code>
      Compilation result is :
      <output>
      Following is the Error message:
      The system is out of resources.
      Consult the following stack trace for details.
      java.lang.StackOverflowError
              at com.sun.tools.javac.code.Types$23.visitClassType(Types.java:2593)
              at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:568)
              at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:3240)
              at com.sun.tools.javac.code.Types$23.visitWildcardType(Types.java:2616)
              at com.sun.tools.javac.code.Types$23.visitWildcardType(Types.java:2593)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:3240)
              at com.sun.tools.javac.code.Types.hashCode(Types.java:2590)
              at com.sun.tools.javac.code.Types$TypePair.hashCode(Types.java:2363)
              at java.util.HashMap.put(HashMap.java:389)
              at java.util.HashSet.add(HashSet.java:217)
              at com.sun.tools.javac.code.Types$10.isCastableRecursive(Types.java:1103)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1144)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1090)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.disjointType(Types.java:1087)
              at com.sun.tools.javac.code.Types.disjointTypes(Types.java:1070)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:979)
              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:881)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:908)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:885)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:881)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:858)
              at com.sun.tools.javac.code.Types$10.isCastableRecursive(Types.java:1105)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1144)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1090)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.disjointType(Types.java:1087)
              at com.sun.tools.javac.code.Types.disjointTypes(Types.java:1070)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:979)
              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:881)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:908)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:885)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:881)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:858)
              at com.sun.tools.javac.code.Types$10.isCastableRecursive(Types.java:1105)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1144)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1090)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.disjointType(Types.java:1087)
              at com.sun.tools.javac.code.Types.disjointTypes(Types.java:1070)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:979)
              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:881)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:908)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:885)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:881)
              at com.sun.tools.javac.code.Types.isCastable(Types.java:858)
              at com.sun.tools.javac.code.Types$10.isCastableRecursive(Types.java:1105)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1144)
              at com.sun.tools.javac.code.Types$10.visitWildcardType(Types.java:1090)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
              at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3183)
              at com.sun.tools.javac.code.Types.disjointType(Types.java:1087)
              at com.sun.tools.javac.code.Types.disjointTypes(Types.java:1070)
              at com.sun.tools.javac.code.Types$9.visitClassType(Types.java:979)
              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:881)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:908)
              at com.sun.tools.javac.code.Types$9.visitWildcardType(Types.java:885)
              at com.sun.tools.javac.code.Type$WildcardType.accept(Type.java:430)
      </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)

      bash-3.00$ uname -a
      SunOS hrajan 5.10 Generic sun4u sparc SUNW,Sun-Blade-100

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              mcimadamore Maurizio Cimadamore
              duke J. Duke (Inactive)
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                Updated:
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