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Security release for main - #667
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saulecabrera merged 3 commits intoOct 26, 2026
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* Externref results may be stale references [GHSA-c9f2-f4vx-xq68](GHSA-c9f2-f4vx-xq68) * Data race in WASI when calling functions with `gvl: false` [GHSA-76hq-g43j-f2rr](GHSA-76hq-g43j-f2rr) Co-authored-by: Jeff Charles <jeff.charles@shopify.com>
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saulecabrera
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October 26, 2026 14:52
On Ruby 3.3, `GC.verify_compaction_references(double_heap: true)` doubles the number of heap pages on every call and never releases them. The externref lifetime specs call it in almost every example, so the heap grew exponentially and the process was OOM-killed in CI (and took the runner down with it). `expand_heap: true` only adds the pages needed to move every live object, which is what Ruby 3.4+ already does for `double_heap`, and is the replacement the deprecation warning asks for.
… writes The "releases values from failed global writes, table writes and table growth" example is flaky and needs more investigation. Skip it for now; the test is kept so it can be re-enabled.
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gvl: falseGHSA-76hq-g43j-f2rr