We're very happy to announce that X10 and X10DT version 2.3.0 are now
available! This is a major release of X10 and includes significant
enhancements to X10/Java interoperability.
For more information and to download X10 and X10DT version 2.3.0, please
see the X10 2.3.0 release page:
http://x10-lang.org/releases/x10-release-230.
The Release Notes for 2.3.0 are appended.
MAJOR CHANGES
The following major changes were made in the X10 language
specification and implementation in this release.
X10 2.3.0 introduces significant improvements in X10/Java
interoperability. A few backwards compatible language enhancements
and some some non backwards-compatible class library changes were made
to improve the quality of Java interoperability.
- Java types may now be imported/used in X10 programs just
as-if they were X10 types.
- An isref predicate (similar to iszero) has been added to
X10's constraint language to enable identification of types
that are constrained to be representable as a pointer.
- X10 classes are no longer required to inherit from a single
root class (x10.lang.Object).
- x10.lang.Object has been removed from the standard library.
- The exception hierarchy has been changed and checked exceptions
and a throws clauses were reintroduced. The exception hierarchy
now aligns neatly with Java's, although X10 prefers using
unchecked exceptions as much as possible.
For more details on these changes, please see the Changelog section
of the X10 language specification.
For advice on porting code from X10 2.2.3 to X10 2.3.0 please see
the "Porting notes for X10 2.3" email message available at:
https://sourceforge.net/mailarchive/message.php?msg_id=29741534
Please consult the language specification for the details of
any minor language changes and specification clarifications made in
this release.
SUMMARY OF ISSUES RESOLVED IN THIS RELEASE
Below is a summary of JIRA issues addressed for the X10 2.3.0
** New Features and Improvements
* [XTENLANG-1391] - Move .h and .cc files that contain implementation
for x10.lang classes from x10aux into x10/lang
* [XTENLANG-2118] - Java interoperability
* [XTENLANG-2911] - Consolidate RuntimeException into Exception
* [XTENLANG-3076] - java-interop: make static fields private to avoid
java programmers accidentally see uninitialized fields
* [XTENLANG-3012] - Java Interop Iterators
* [XTENLANG-3068] - java-interop: write sample applications
* [XTENLANG-3069] - java-interop: write test cases
* [XTENLANG-3079] - java-interop: if possible, don't print method
return type with @Throws annotation in error message
** Task
* [XTENLANG-3091] - introduce x10.lang.IndexOutOfBoundsException to
make exception hierarchy as close as Java
* [XTENLANG-3102] - remove boxing of String
* [XTENLANG-3105] - clean up exception handling mechanism by removing
nested try-catch for conversion of exceptions and removing reordering catch
blocks for multiple exception hierarchies
* [XTENLANG-3106] - clean up runtime type system by removing
ObjectType, Ref, RefI, StructType, Struct, StructI etc.
** Bug
* [XTENLANG-2868] - Captured environment calculation is incorrect for
anonymous inner class
* [XTENLANG-2892] - java.lang.IndexOutOfBoundsException in constraint
system (SelfArrayReference_7)
* [XTENLANG-2986] - java interop: parser does not accept @Throws
annotation with constructor without specifying return type (JavaException3)
* [XTENLANG-2989] - java-interop: Cannot call an @Throws method inside
of an async or an at
* [XTENLANG-3062] - java exceptions not propagated through at / async
* [XTENLANG-3087] - Reachability test not working for generic methods
that throw exceptions
* [XTENLANG-3089] - getCause() in @NativeRep("java") x10.lang.Throwable
returns too broad type
* [XTENLANG-3090] - use x10.lang.AssertionError instead of
java.lang.AssertionError for assertions
* [XTENLANG-3092] - T haszero expression broken in managed backend
(HasZero1.x10)
* [XTENLANG-3093] - assigning null to T field broken when T is bound to
struct (GenericCast14.x10)
* [XTENLANG-3095] - New method x10.matrix.Vector.maxNorm()
* [XTENLANG-3097] - java-interop: type system should consider every
type has methods of Any (Any1.x10)
* [XTENLANG-3099] - -CHECK_INVARIANTS is broken
* [XTENLANG-3100] - -DEBUG_CODEGEN is broken
* [XTENLANG-3101] - Instance fields of clusure are not initialized when
compiled with -O
* [XTENLANG-3104] - Initialization of properties is broken
(SelfArrayReference_1.x10)
* [XTENLANG-3108] - Incorrect order of initialization for properties
and fields (XTENLANG_215.x10)
* [XTENLANG-3109] - Unresolved RTT type parameter in local class inside
generic class
* [XTENLANG-3110] - Generic method with local class causes NPE in
LocalClassRemover
* [XTENLANG-3111] - Java arrays not serialised properly when cast to
Any (JavaArray3.x10)
* [XTENLANG-3112] - Java exceptions stack trace not serialised via
reflection-based serialisation mechanism
* [XTENLANG-3113] - Class extending Exception cannot be serialised in
managed backend (JavaSerialization4.x10)
* [XTENLANG-3115] - Exception message not serialized in Java backend
(ExceptionsRemote.x10)
* [XTENLANG-3116] - Stop instantiating abstract class with unsafe
(JavaSerialization4b.x10)
* [XTENLANG-3121] - Serialization of Java arrays doesn't preserve
isomorphism (JavaType2.x10)
* [XTENLANG-3123] - x10.lang.Error is not translated to
x10.lang.MultipleExceptions (FinishTest3.x10)
* [XTENLANG-3125] - typeGuard of generic subtype should be propagated
to its generic supertype (GenericsInheritance4.x10)
* [XTENLANG-3127] - Serialization of exceptions that has a field of
Array[Exception] is broken (RootException11b)
* [XTENLANG-3129] - Native backend generates invalid C++ code for
user-defined operator ..
* [XTENLANG-3130] - Ambiguous _deserialize_body
* [XTENLANG-3131] - Class tangle up in local class properties.
* [XTENLANG-3133] - Bug in typedef for RemoteRail[T] = GlobalRef[Rail
[T]]
* [XTENLANG-3138] - class C[T] { class D[T] { } } broken
For the details of JIRA issues fixed in this release, see
http://jira.codehaus.org/secure/ReleaseNote.jspa?projectId=11812&version=17009------------------------------------------------------------------------------
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