Inference with wildcard types causes selection of inapplicable method

[Craig]

$ lsb_release -rd
Description: Ubuntu 11.04
Release: 11.04
$ java -version
java version "1.6.0_22"
OpenJDK Runtime Environment (IcedTea6 1.10.1) (6b22-1.10.1-0ubuntu1)
OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode)

Running javac against "Comp.java" (attached):
$ javac Comp.java
Comp.java:24: invalid inferred types for T; actual arguments do not conforms to inferred formal arguments
required: java.lang.Iterable<? extends java.util.Comparator<? super java.lang.String>>
found: java.util.List<java.util.Comparator<?>>
    Comparator<String> c3 = compound(x);
                                    ^
1 error

This error should not occur (successful compilation should result).

This issue was a bug in javac that has since been fixed: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6638712
It was fixed in OpenJDK 6 1.10: http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=648

Seeing as Ubuntu has 1.10.1, the bug should be fixed for it - but it is still present.

In the OpenJDK Ubuntu package changelog, I see that this particular change was reverted for Maverick: https://launchpad.net/ubuntu/+source/openjdk-6/6b20-1.9.2-0ubuntu2 I wonder if somehow the reversion persisted for Natty.

This problem is pretty major, as it means Ubuntu's shipping javac is not able to compile a variety of valid Java source.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Benjamin Prosnitz (aetherane)]

This appears to not have been fixed in Ubuntu 12.04