Issue #9796 has been reported by Eric Wong.

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Backport #9796: please backport GC fixes r45638 and r45760
https://bugs.ruby-lang.org/issues/9796

* Author: Eric Wong
* Status: Open
* Priority: Normal
* Assignee: 
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r45638 - fixes [Bug #9518]
r45760 - One line fix seems obviously correct.

There are probably other important GC bugfixes for 2.1,
I'll wait for others (nari, ko1 and nobu) to respond.




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