[ruby-core:123694] [Ruby Bug#21670] 3.4.5 crashing with "try to mark T_NONE object"

From: "nrodriguez (Nicolas Rodriguez) via ruby-core" <ruby-core@...>
Date: 2025-11-05 21:10:12 UTC
List: ruby-core #123694
Issue #21670 has been updated by nrodriguez (Nicolas Rodriguez).


@byroot https://bugs.ruby-lang.org/issues/21021

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Bug #21670: 3.4.5 crashing with "try to mark T_NONE object"
https://bugs.ruby-lang.org/issues/21670#change-115077

* Author: esaron (Es Aron)
* Status: Open
* ruby -v: ruby 3.4.5 (2025-07-16 revision 20cda200d3) +PRISM [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
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We're experiencing a large number of crashes while running tests in CI on Ubuntu 22.04 runners. It is inconsistent, and we cannot reproduce reliably, although when the crash happens it appears to always happen in the same place, even if during different tests.

This occurs both with and without YJIT enabled.

---Files--------------------------------
3.4.5-crash-logs.txt (185 KB)


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