Rust Drop trait support in gccrs - Status Report 3
GSoC student Janet Chien reports progress on implementing Rust's Drop trait in GCC's Rust frontend (gccrs), with several patches merged or under review.
Janet Chien, a Google Summer of Code student, provides her third status report on implementing Rust’s Drop trait functionality in gccrs. Notable progress includes merging patches for Drop infrastructure refactoring and test cases for nested scopes, while other patches for function-scope drops, explicit returns, and non-unit tail expressions are currently under review. Future work involves refining existing patches and exploring a try/finally-based cleanup mechanism using the GCC Go frontend’s defer implementation.
- proposer
Provides an update on her GSoC project, detailing merged and in-review patches for Rust Drop trait implementation in gccrs, and outlining next steps.
“Since my last report, I have pushed the following patches: 1. Refactor the Drop infrastructure (CompileDrop / DropBuilder) Merged: https://github.com/Rust-GCC/gccrs/pull/4586 2. Add support for function-scope drops Under review: https://github.com/Rust-GCC/gccrs/pull/4591”
In Details
This is a project status update for the Google Summer of Code (GSoC) concerning the Rust frontend for GCC (gccrs). The focus is on implementing support for Rust's Drop trait, which handles resource deallocation. The report details progress on refactoring the drop infrastructure, adding support for various scoping mechanisms (function-scope, explicit returns), and testing, indicating advancement towards enabling safe Rust code compilation within GCC.
- GSoC
- Google Summer of Code, an annual program that offers student developers stipends to contribute to open-source projects.
- gccrs
- The Rust frontend for the GNU Compiler Collection (GCC).
- Drop trait
- In Rust, a trait that allows custom cleanup logic to be executed when a value goes out of scope, ensuring resources are properly deallocated.
- GIMPLE
- GCC's internal representation of code, used after parsing and before final code generation.
- try/finally
- Control flow structures common in many programming languages for exception handling and guaranteed execution of cleanup code.
- defer
- A Go language keyword that schedules a function call to be run later, typically used for cleanup actions, similar in concept to Rust's Drop trait.