IcedTea6 >= 1.8 x Oracle JDK 6 compiler incompatibility

[Pavel Tisnovsky]

Hi all,

There seems to be a compiler incompatibility between recent Oracle JDK 6
(build 1.6.0_24-b07) and IcedTea6 versions 6-1.8 and newest.

While trying to compile source included in attachment [TreeMapTest.java]
 source is compiled without warnings using Oracle JDK 6 or (for example)
IcedTea6-1.7. But IcedTea6-1.8, 6-1.9 and 6 HEAD fail to compile with
following error messages:

TreeMapTest.java:5: incompatible types; no instance(s) of type
variable(s) K,V exist so that java.util.TreeMap<K,V> conforms to
java.util.Map<java.lang.String,java.lang.Object>
found   : <K,V>java.util.TreeMap<K,V>
required: java.util.Map<java.lang.String,java.lang.Object>
    private Map<String, Object> map1 = newTreeMap(Collator.getInstance());
                                                 ^
TreeMapTest.java:8: incompatible types; no instance(s) of type
variable(s) K,V exist so that java.util.TreeMap<K,V> conforms to
java.util.Map<java.lang.String,java.lang.Object>
found   : <K,V>java.util.TreeMap<K,V>
required: java.util.Map<java.lang.String,java.lang.Object>
    private Map<String, Object> map2 = newTreeMap(new Comparator<String>()
                                                 ^
2 errors

Do anyone have any idea what's wrong? Similar code is used in RichFaces
so peoples compiling this framework is having problems using IcedTea on
its machines.

Cheers
Pavel
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