Allow the global allocator to use thread-local storage and std::thread::current() - #144465

Merged

bors merged 12 commits into

rust-lang:mainfrom

orlp:system-alloc-tls

Nov 29, 2025

Commits on Nov 27, 2025

Use System allocator for thread-local storage
orlp
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750609c
Use spinlock for ThreadId if 64-bit atomic unavailable
orlp
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8481b82
Add documentation guaranteeing global allocator use of TLS

orlp
and
Mark-Simulacrum
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f9b0811
Ensure set_current is called early during thread init
orlp
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58830de
Address review comments
orlp
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0b7cdf2
Use checked_add instead of manual overflow check
orlp
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85a4907
Fix SGX implementation
orlp
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b717684
Add inline(never) to prevent reordering after TLS has been destroyed
orlp
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9b5bb75
Expand test with allocating from thread-local destructors
orlp
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ff8ed14
Silence dead code warning for ThreadInit::init
orlp
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4ecf505

Commits on Nov 28, 2025

Add missing feature flag
orlp
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48fc0fd
Update debuginfo test from Global to System
orlp
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492fbc5