Potential race condition in global trace

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#15 opened on Mar 28, 2026 0 comments 0 reactions 1 assignee View on GitHub

@balupillai is already working on this.

Since Apr 6, 2026.

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Description

Thread A created a object O. O->xref = notxref
Thread B references O and adds to its heap. O->xref = isxref
Global trace runs and flips notxref and isxref
Visits Thread A heap first. And marks O->xref = notxref

local_collection on Thread A will free O, while Thread B is still holding the reference.

Dominant language: C
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