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  1. JDK
  2. JDK-8160244

skip capture conversion before subtyping if types are parameterizations of the same class or interface

    Details

    • Subcomponent:
    • Introduced In Version:
      9
    • CPU:
      x86
    • OS:
      other

      Description

      FULL PRODUCT VERSION :
      java version "9-ea"
      Java(TM) SE Runtime Environment (build 9-ea+121)
      Java HotSpot(TM) 64-Bit Server VM (build 9-ea+121, mixed mode)


      ADDITIONAL OS VERSION INFORMATION :
      Darwin snazy-ds15.local 15.5.0 Darwin Kernel Version 15.5.0: Tue Apr 19 18:36:36 PDT 2016; root:xnu-3248.50.21~8/RELEASE_X86_64 x86_64


      A DESCRIPTION OF THE PROBLEM :
      Apache Cassandra fails to compile o.a.c.utils.Throwables at line #79.

      https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/utils/Throwables.java#L79

      The relevant methods look like this:

          public static <E extends Exception> void perform(DiscreteAction<? extends E> ... actions) throws E
          {
              perform(Stream.of(actions));
          }
          public static <E extends Exception> void perform(Stream<DiscreteAction<? extends E>> actions) throws E
          {
              ...
          }

      The above compiles fine w/ JDK8 but fails with JDK9.

      As a workaround, I've changed the invocation to "Throwables.<E>perform(Stream.of(actions));"

      (FYI: Got a branch that compiles fine working around that issue here: https://github.com/snazy/cassandra/tree/9608-java9-trunk)

      REGRESSION. Last worked in version 8u92

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Checkout Apache Cassandra using current trunk & run "ant jar"


      REPRODUCIBILITY :
      This bug can be reproduced always.

      CUSTOMER SUBMITTED WORKAROUND :
      (see above)

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              • Assignee:
                vromero Vicente Arturo Romero Zaldivar
                Reporter:
                webbuggrp Webbug Group
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                Dates

                • Created:
                  Updated: