chore(release): v0.5.0

[plc-automated-release]

Release v0.5.0

Bumps all workspace packages from v0.4.1-dev → v0.5.0.

Review the updated CHANGELOG.md for a full list of changes.

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Merge this PR to trigger tagging and GitHub release creation.

[github-actions]

Release Preview

This is the GitHub release that would be published if this PR were merged now.

• Title: RuSTy PLC Compiler 0.5.0
• Tag: v0.5.0
• Previous tag: v0.4.0

Rendered release

RuSTy PLC Compiler 0.5.0

This release publishes v0.5.0.

Below is the changelog since v0.4.0.

0.5.0 - 2026-04-24

Added

• Migrate property syntax to IEC 61131-3 2025 edition (feat!: migrate property syntax to IEC 61131-3 2025 edition #1688)

Fixed

• validation: Prevent array-bound panics and diagnose non-constant bounds (fix(validation): prevent array-bound panics and diagnose non-constant bounds #1683)
• Add a validation for non-integer array bounds (fix: add a validation for non-integer array bounds #1679)
• Always upcast unsized variadics to 32 bit (fix: always upcast unsized variadics to 32 bit #1695)
• Added lowering mechanism to support functions with the reference to * return type (fix: added lowering mechanism to support functions with the reference to * return type #1644)
• Enum initialized with typed literal is now annotated with correct type (fix: enum initialized with typed literal is now annotated with correct type #1689)
• validation: Support REFERENCE TO array-of-pointer assignment semantics (fix(validation): support REFERENCE TO array-of-pointer assignment semantics #1684)
• Remove the false positive on variadics (fix: remove the false positive on variadics #1685)
• validation: Handle implicit constant array defaults correctly (fix(validation): handle implicit constant array defaults correctly #1687)

Expected release assets

Assets are uploaded asynchronously from the post-merge Build Linux and Build Windows runs on master.

• plc-linux-x86_64
• plc-linux-aarch64
• plc.exe
• plc-compiler_0.5.0-1_amd64.deb
• plc-compiler_0.5.0-1_arm64.deb
• plc-stdlib_0.5.0-1_amd64.deb
• plc-stdlib_0.5.0-1_arm64.deb
• stdlib-0.5.0.tar.gz
• iec61131std.dll
• iec61131std.lib

Linux packages prefer the native build for each target architecture.

[github-actions]

Build Artifacts

🪟 Windows

Artifact	Link	Size
stdlib.lib	Download	4.3 MB
stdlib.dll	Download	0.1 MB
plc.exe	Download	38.4 MB

From workflow run

🐧 Linux

Artifact	Link	Size
deb-x86_64	Download	38.5 MB
schema	Download	0.0 MB
stdlib	Download	32.4 MB
plc-x86_64	Download	43.6 MB
deb-aarch64	Download	30.9 MB
plc-aarch64	Download	43.5 MB

From workflow run