This is the third update to the second major release of the GNUstep Objective-C runtime (a.k.a. libobjc2). This runtime was designed to support the features of modern dialects of Objective-C for use with GNUstep and other Objective-C programs.

Highlights of this release include:

• The blocks runtime from swift-corelibs-libdispatch can now be used instead of the runtime included in libobjc2.
• The blocks runtime is now capable of selecting block trampolines based on the current page size at runtime. It now supports AArch64 targets with 16 KiB page sizes, fixing a segmentation fault on Asahi Linux and Android 15 devices with 16 KiB page sizes. For PowerPC64, the trampoline page size was adjusted to 64 KiB.
• Implemented the method_getTypedSelector_np function.
• The AArch64 objc_msgSend implementation now conforms to the Visual Studio ABI's sret mechanism for non-trivial data types.
• Differences in the x86_64 calling convention have been addressed in the objc_msgSend implementation.
• The robin map dependency was updated to version 1.4.0.
• Associated objects are now properly retained and autoreleased.
• Several bug fixes in the fast-path code.
• Built-in classes no longer rely on load order.
• Various memory leaks have been fixed.

You may obtain the code for this release from git and use the 2.3 branch:

https://github.com/gnustep/libobjc2.git

Alternatively, a tarball is available from:

https://github.com/gnustep/libobjc2/archive/v2.3.zip https://github.com/gnustep/libobjc2/archive/v2.3.tar.gz

The runtime library is responsible for implementing the core features of the object model, as well as exposing introspection features to the user. The GNUstep runtime implements a superset of Apple's Objective-C Runtime APIs.

If you come across any problems, please file them in the issue tracker:

https://github.com/gnustep/libobjc2/issues