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Clojure 1.12.3

Clojure 1.12.3 is now available! Find download and usage information on the Downloads page. CLJ-2919 - Compiler - fix nested compilation emitting for keyword and protocol call sites

7 April 2026 at 07:40 am
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Clojure 1.12.3

Clojure 1.12.3 has been released, offering a new version of the popular functional programming language developed by the Clojure team. This update, which includes the fix for CLJ-2919, addresses a compiler issue related to nested compilation emitting for keyword and protocol call sites. The release provides users with enhanced performance and stability, making it an essential update for developers working with Clojure.

The Clojure programming language, known for its expressive syntax and powerful features, has been widely adopted in various domains, including web development, data analysis, and scientific computing. Clojure's strong focus on immutability, concurrency, and interoperability with Java has made it a favorite among developers seeking to build robust and scalable applications.

One of the key improvements in Clojure 1.12.3 is the resolution of CLJ-2919, a compiler bug that affected the handling of nested compilation emitting for keyword and protocol call sites. This issue could lead to unexpected behavior and performance degradation in certain scenarios. The fix ensures that the compiler now emits the correct bytecode for these cases, resulting in more reliable and efficient code execution.

In addition to the CLJ-2919 fix, Clojure 1.12.3 also includes other minor enhancements and bug fixes that contribute to the overall stability and performance of the language. These improvements are the result of the ongoing efforts of the Clojure community and the dedicated team of developers who work tirelessly to refine and expand the language's capabilities.

For users looking to upgrade to the latest version of Clojure, the Downloads page on the official Clojure website provides all the necessary information. Developers can easily download the new release and integrate it into their existing projects, benefiting from the enhanced performance and stability it offers.

The release of Clojure 1.12.3 underscores the continuous commitment of the Clojure community to improving the language and expanding its capabilities. As a popular choice among developers for its unique features and strong ecosystem, Clojure continues to evolve, providing new opportunities for innovation and development.

In conclusion, Clojure 1.12.3 represents a significant update for the language, addressing critical issues and enhancing its performance. With the fix for CLJ-2919 and other improvements, developers can now leverage a more stable and efficient version of Clojure to build innovative applications. As always, the Clojure community remains dedicated to fostering a thriving ecosystem that supports the growth and development of the language.

Source: Clojure News
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