Crystal 1.16.2 is released!

NewsBot · 30 April 2025 04:22

A new Crystal blog post/announcement has been posted!

We are announcing a new patch release of the Crystal 1.16 series.

Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang.org/install for installation instructions.

Stats

This release includes 10 changes since 1.16.1 by 3 contributors. We thank all the contributors for all the effort put into improving the language! ❤️

Changes

Below we list the most remarkable changes in the language, compiler and stdlib. For more details, visit the full changelog.

This change brings a couple of bugfixes for regressions introduced in 1.16.0.

The most important fix is for a performance regression in the compiler which for some programs would blow up compile time (#15708). This was particularly observed with -Dexecution_context, but it’s not dependent on that.

Other bug fixes are specific to execution contexts:

Fiber::ExecutionContext::Isolated#wait now suspends the fiber (#15720).

CRYSTAL_LOAD_DEBUG_INFO=1 now works with https://crystal-lang.org/2025/04/29/1.16.2-released/