Tracking Issue for stabilizing the sanitizers (e.g., AddressSanitizer, LeakSanitizer, MemorySanitizer, ThreadSanitizer)

This is a tracking issue for stabilizing the sanitizers (e.g., AddressSanitizer, LeakSanitizer, MemorySanitizer, ThreadSanitizer). The original tracking issue for the sanitizers support for Rust is #39699. This is part of our work to organize and stabilize support for the sanitizers. (See our roadmap at https://hackmd.io/@rcvalle/S1Ou9K6H6.)

Steps

• Add support for separating sanitizers support in stable and unstable for supported targets.
• Stabilize AddressSanitizer and LeakSanitizer for Tier 1 targets.
• Create new Tier 2 targets with sanitizers enabled by default.
• Stabilize AddressSanitizer for the new Tier 2 targets.
• Stabilize MemorySanitizer and ThreadSanitizer for the new Tier 2 targets.

Unresolved Questions

Is there any concern or anything that the community would like to see implemented before their stabilization?

Implementation history

• #123617
• https://github.com/rust-lang/rust-project-goals/pull/337
• https://github.com/rust-lang/rust-project-goals/blob/main/src/2025h2/stabilization-of-sanitizer-support.md
• https://github.com/rust-lang/rust-project-goals/issues/403
• https://github.com/rust-lang/rust-project-goals/blob/main/src/2026/stabilization-of-sanitizer-support.md
• https://github.com/rust-lang/compiler-team/issues/943
• https://github.com/rust-lang/compiler-team/issues/951
• #149644
• #152757

Start with the stabilization guide, the sanitizer roadmap, and the linked implementation history, including #123617 and the project-goals documents. This is a coordination issue rather than a self-contained code task; done means resolving the checklist items and addressing concerns before stabilizing sanitizer support for the listed targets.