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  1. JDK
  2. JDK-7097436

Project Coin: duplicate varargs warnings on method annotated with @SafeVarargs

    Details

    • Subcomponent:
    • Resolved In Build:
      b12
    • CPU:
      unknown
    • OS:
      generic
    • Verification:
      Verified

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        Description

        This program:

        import java.util.ArrayList;
        import java.util.List;

         class X {
                @SafeVarargs
                static void m(List<String>... ls) {
                        Object[] o = ls; // 2 warning here
                        o[0] = new ArrayList<Integer>();
                        System.out.println(o);
                }
        }


        Generates two 'varargs' warnings when compiled with the -Xlint:varargs flag enabled.

        OUTPUT:

        Test.java:7: warning: [varargs] Varargs method could cause heap pollution from non-reifiable varargs parameter ls
                        Object[] o = ls; // 2 warning here
                                     ^
        Test.java:7: warning: [varargs] Varargs method could cause heap pollution from non-reifiable varargs parameter ls
                        Object[] o = ls; // 2 warning here
                                     ^
        2 warnings

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                • Assignee:
                  mcimadamore Maurizio Cimadamore
                  Reporter:
                  mcimadamore Maurizio Cimadamore
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