rust-lang / rust-lang/rust

Tracking Issue for LLVM AllocToken and Heap Partitioning Support for Rust

Open
#159,111 21 comments 1 reaction 1 assignee View on GitHub

@rcvalle is already working on this.

Since Jul 10, 2026.

A-sanitizers C-tracking-issue PG-exploit-mitigations
Dominant language
Rust
Stars
119k
Forks
16.1k
PR metrics pending

Description

View all comments

This is a tracking issue for the LLVM AllocToken and Heap Partitioning Support for Rust project (see the design document draft).

Steps
  • Add option to the Rust compiler driver and frontend (i.e., -Zsanitizer=alloc-token and related options).
  • Add support for emitting allocation token function attributes, module flags, and allocation token hint metadata to the Rust compiler code generation.
  • Implement the default pointer-split heap partitioning scheme in the rustc_sanitizers crate.
  • Define allocation token classifications and type name encodings for cross-language LLVM AllocToken and heap partitioning support.
  • Change the initial implementation to use the defined classifications and type name encodings for cross-language LLVM AllocToken and heap partitioning support.
  • Add typed allocation paths and allocation token hints to the Rust standard library.
  • Add token-enabled allocator interface support to the Rust standard library and to the Rust compiler allocator shim generation.
  • Add the alloc_token_infer intrinsic.
  • Create documentation and tests.
Unresolved Questions

None.

Implementation history

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.