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Stabilize MemorySanitizer and ThreadSanitizer Support #403
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on Sep 16, 2025 Based on the gathered feedback I opened a new MCP for the proposed new Tier 2 targets with sanitizers enabled. (rust-lang/compiler-team#951)
The MCP (rust-lang/compiler-team#951) has been seconded and is still waiting 3 days to be approved. Once that is done, we can proceed with merging the Tier 2 target.
Both the MCP and the PR for the AddressSanitizer target have been merged (rust-lang/compiler-team#951, rust-lang/rust#149644). Next up I should prepare the MCP for the Memory- and ThreadSanitizer targets, hopefully sending out soon.
The targets for MSan and TSan are merged now: rust-lang/rust#152757.
Next, I'll be working on stabilizing those two, now that we have a way to use it without other unstable features (
build-std).- changed the title
[-]Rust Stabilization of MemorySanitizer and ThreadSanitizer Support[/-][+]Stabilize MemorySanitizer and ThreadSanitizer Support[/+]on May 5, 2026 This is a continuing project goal, and the updates below this comment will be for the new period 2026
I'm currently waiting for rust-lang/rust#123617 to be merged before repeating the same process for MemorySanitizer and ThreadSanitizer.
No update, still pending on rust-lang/rust#123617
Summary
Stabilize the MemorySanitizer and ThreadSanitizer support. This includes fixing open bugs for the sanitizers to open a path for stabilization and the necessary infrastructure changes to provide precompiled and instrumented standard libraries for the sanitizers.
This issue is intended for status updates only.
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