Landing: ecc21e255dab

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Project / Subsystem

gcc / gccrs

Date

2026-07-20

Author

Enes Cevik

Commit

ecc21e255dabd1c5ac0d898ace94caa60cc3def0

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gccrs
patch_id: —
commit_hash: ecc21e255dabd1c5ac0d898ace94caa60cc3def0
source_type: github
headline: gccrs: typecheck: Add ADT to ADT unsize coercion support
tldr: gccrs typechecker now supports ADT-to-ADT unsized coercions.
author: Enes Cevik
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • gccrs
• rust
• compiler
• type system
• coercion
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/ecc21e255dabd1c5ac0d898ace94caa60cc3def0
date: 2026-07-20T00:00:00.000Z

The gccrs typechecker has been updated to support unsized coercions between Algebraic Data Types (ADTs). This change refactors the existing coerce_unsized function into smaller, more manageable helpers for improved readability and maintainability. It lays the groundwork for more complex type coercions involving unsized ADTs.