Issue #14269 has been updated by usa (Usaku NAKAMURA).

Backport changed from 2.3: REQUIRED, 2.4: DONE, 2.5: DONE to 2.3: DONE, 2.4: DONE, 2.5: DONE

ruby_2_3 r62941 merged revision(s) 61562,61563,61566,61568,61569.

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Bug #14269: backport r61562, r61563, r61566, r61568, r61569 (fix SEGV touching uninitialized memory)
https://bugs.ruby-lang.org/issues/14269#change-71268

* Author: nagachika (Tomoyuki Chikanaga)
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: -
* Backport: 2.3: DONE, 2.4: DONE, 2.5: DONE
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backport 管理用チケットです。



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