git: openjdk/jdk16: 8259028: ClassCastException when using custom filesystem with wrapper FileChannel impl

[Maurizio Cimadamore]

Changeset: d60a937e
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
Date:      2021-01-11 16:14:56 +0000
URL:       https://git.openjdk.java.net/jdk16/commit/d60a937e

8259028: ClassCastException when using custom filesystem with wrapper FileChannel impl

Reviewed-by: chegar, alanb, uschindler

! src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/MemorySegment.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/MappedMemorySegmentImpl.java
! test/jdk/java/foreign/TestByteBuffer.java