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  1. JDK
  2. JDK-8052070

javac crashes when there are duplicated type parameters

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    • b48
    • Verified

        Consider the following code:
        ---
        public class Main<A, A, T> {
        }
        ---

        Compiling it with:
        $ javac -fullversion
        javac full version "1.8.0-b132"

        Leads to:
        An exception has occurred in the compiler (1.8.0). 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.NullPointerException
                at com.sun.tools.javac.comp.MemberEnter.baseEnv(MemberEnter.java:1385)
                at com.sun.tools.javac.comp.MemberEnter.complete(MemberEnter.java:1046)
                at com.sun.tools.javac.code.Symbol.complete(Symbol.java:560)
                at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1024)
                at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:960)
                at com.sun.tools.javac.code.Symbol$ClassSymbol.getKind(Symbol.java:1088)
                at com.sun.tools.javac.code.Kinds.kindName(Kinds.java:162)
                at com.sun.tools.javac.comp.Check.duplicateError(Check.java:327)
                at com.sun.tools.javac.comp.Check.checkUnique(Check.java:3370)
                at com.sun.tools.javac.comp.Enter.visitTypeParameter(Enter.java:458)
                at com.sun.tools.javac.tree.JCTree$JCTypeParameter.accept(JCTree.java:2218)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
                at com.sun.tools.javac.comp.Enter.visitClassDef(Enter.java:422)
                at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:687)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
                at com.sun.tools.javac.comp.Enter.visitTopLevel(Enter.java:338)
                at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:518)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:262)
                at com.sun.tools.javac.comp.Enter.classEnter(Enter.java:276)
                at com.sun.tools.javac.comp.Enter.complete(Enter.java:490)
                at com.sun.tools.javac.comp.Enter.main(Enter.java:475)
                at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:985)
                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)

              sadayapalam Srikanth Adayapalam (Inactive)
              jlahoda Jan Lahoda
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                Created:
                Updated:
                Resolved: