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  1. JDK
  2. JDK-6507334

Generic compiler signals ambiguous method declaration although signatures already differ

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 6
    • Fix Version/s: None
    • Component/s: tools
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_xp

      Description

      java version "1.6.0"
        Java(TM) SE Runtime Environment (build 1.6.0-b105)
        Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)
       
      Does this problem occur on J2SE 1.4.x or 5.0.x ? Yes / No (pick one)
        1.4 N/A.
        5.0 No. Enclosed source compiles with JDK 1.5.0_10.
       
       
      Operating System Configuration Information (be specific):
        Microsoft Windows XP Professional Version 2002 Service Pack 2 (DE)
       
      Hardware Configuration Information (be specific):
         Sony Vaio VGN-VS 1.60 GHz, 1 GB RAM
       
       
      Bug Description:
        Generic Compiler signals ambiguous method declaration although signatures
        already differ concerning their raw types.
       
      Steps to Reproduce (be specific):
       
      Compile enclosed Java source.
      The JDK 6 generics compiler indicates the following message:

      A.java:44: reference to get is ambiguous, both method <T>get(A.B<? super S,T>) in A.D<capture#0 of ?> and method get(A.C<? super S>) in A.D<capture#0 of ?> match
      We suppose that this is a compiler bug because the two methods already differ in their raw type signatures.

      In addition, the source compiles with JDK 1.5.0.

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              • Assignee:
                ahe Peter Ahe
                Reporter:
                tyao Ting-Yun Ingrid Yao (Inactive)
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                  Updated:
                  Resolved:
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