Issue #15205 has been updated by usa (Usaku NAKAMURA).

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

ruby_2_4 r65111 merged revision(s) 64915.

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Bug #15205: backport r64915 (check argument type.)
https://bugs.ruby-lang.org/issues/15205#change-74472

* Author: nagachika (Tomoyuki Chikanaga)
* Status: Closed
* Priority: Normal
* Assignee: nagachika (Tomoyuki Chikanaga)
* Target version: 
* ruby -v: -
* Backport: 2.3: UNKNOWN, 2.4: DONE, 2.5: DONE
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This ticket is for backport management.



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