Issue #14623 has been reported by usa (Usaku NAKAMURA).

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Bug #14623: backport r54737, r54740 and r55792
https://bugs.ruby-lang.org/issues/14623

* Author: usa (Usaku NAKAMURA)
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 2.3 only
* Backport: 2.3: REQUIRED, 2.4: DONTNEED, 2.5: DONTNEED
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バックポート管理用チケットです。



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