[8u20] request for approval to backport JDK-8031967: For some sources compiler compiles for ever

[Jan Lahoda]

Hello,

I'd like to ask for an approval to backport fix for:

Bug: https://bugs.openjdk.java.net/browse/JDK-8033287
Backport bug: https://bugs.openjdk.java.net/browse/JDK-8046562
jdk9 fix: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/1514b395e8e1

The fix does not apply cleanly to: 
http://hg.openjdk.java.net/jdk8u/jdk8u-dev/langtools. However, the only 
difference between JDK 9 and JDK 8 patch is that one of the lines 
removed by the patch is using diamond operator in JDK 9 and is not using 
it in JDK 8.

Thanks,
    Jan