FULL PRODUCT VERSION :


A DESCRIPTION OF THE PROBLEM :
code:
class Gen<T,T,T>
{
T ob1,ob2,ob3;
Gen(T o1,T o2,T o3)
{
ob1=o1;
ob2=o2;
ob3=o3;
}
T getob1()
{
return ob1;
}
T getob2()
{
return ob2;
}
T getob3()
{
return ob3;
}
}
public class HelloWorld
{
public static void main(String []args)
{
Gen<Integer,Integer,Integer> a=new Gen<Integer,Integer,Integer>(100,500,1000);
int a1=a.getob1();
System.out.println(a1);
}
}



compilation:
An exception has occurred in the compiler (1.8.0_121). 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.NullPointerException
        at com.sun.tools.javac.comp.MemberEnter.baseEnv(MemberEnter.java:1388)
        at com.sun.tools.javac.comp.MemberEnter.complete(MemberEnter.java:1046)
        at com.sun.tools.javac.code.Symbol.complete(Symbol.java:574)
        at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1037)
        at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:973)
        at com.sun.tools.javac.code.Symbol$ClassSymbol.getKind(Symbol.java:1101)
        at com.sun.tools.javac.code.Kinds.kindName(Kinds.java:162)
        at com.sun.tools.javac.comp.Check.duplicateError(Check.java:329)
        at com.sun.tools.javac.comp.Check.checkUnique(Check.java:3380)
        at com.sun.tools.javac.comp.Enter.visitTypeParameter(Enter.java:454)
        at com.sun.tools.javac.tree.JCTree$JCTypeParameter.accept(JCTree.java:2224)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:258)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:272)
        at com.sun.tools.javac.comp.Enter.visitClassDef(Enter.java:418)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:258)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:272)
        at com.sun.tools.javac.comp.Enter.visitTopLevel(Enter.java:334)
        at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:518)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:258)
        at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:272)
        at com.sun.tools.javac.comp.Enter.complete(Enter.java:486)
        at com.sun.tools.javac.comp.Enter.main(Enter.java:471)
        at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:982)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:857)
        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.