## MLton 20241230+git20251029+dfsg-5

# Release20241230

Here you can download the latest public release of MLton, version 20241230.

## Changes since MLton 20210117

- Compiler.

  - Enhance and fix bugs in `Useless` and `ConstantPropagation` SSA optimization passes.

  - Update LLVM codegen; using the LLVM codegen requires LLVM 15 (or higher).

  - Update elaboration error messages involving constants and infix patterns and expressions.

  - Accept a non-semicolon terminated final expression in the syntax of programs.

  - Eliminate (expert) `-profile time-label` compile-time option.

  - Fix `-pi-style pie` compile-time option.

- Runtime.

  - Fix bug in heap resizing that could lead to a segmentation fault.

  - Fix bug with `-align 4` and mark-compact GC.

  - Fix bug in `GC_sequenceCopy` failing to update card map when copying object pointers.

- Libraries.

  - Basis Library.

    - Fix bug in `ImperativeIO.getInstream`.

    - Fix bug in `Date.localOffset` for time zones east of prime meridian.

    - Fix bugs in `WORD.scan` when `0` is followed by `w` or `x` or `wx` but not by more digits.

  - Other libraries.

    - Updated: ckit library, MLLPT library, MLRISC library, SML/NJ library

- Other.

  - Add preliminary support for `wasm32-wasi`.

  - Add support for `loongarch64` architecture.

  - Update `Makefile`s to simplify bootstrapping.

## 20241230 binary packages

- See MLton 20241230 assets on GitHub.

## 20241230 source packages

- mlton-20241230.src.tgz

## Also see

- MLton Guide (20241230).

  A snapshot of the MLton website at the time of release.