https://bugs.openjdk.java.net/browse/JDK-8194133 http://cr.openjdk.java.net/~bpb/8194133/webrev.00/
Add jdk.internal.io.IOSupport with copy() methods for InputStream-to-OutputStream copying and modify some classes to use these new methods. One thing that I noticed when looking at this is that in the fix for https://bugs.openjdk.java.net/browse/JDK-8193842, the Files.copy() method had a loop like while ((n = read(…)) > 0) whereas InputStream.transferTo() had while((n = read(…)) >= 0) which is to say that Files.copy() would terminate if there were an empty read() but transferTo() would not. The patch for 8193842 therefore possibly introduced a subtle behavioral change which no one noticed. Thanks, Brian
