Issue #8450 has been reported by nagachika (Tomoyuki C.).
Backport #8450: backport r40920 (string.c (rb_str_quote_unprintable):
check if argument is a string.)
Author: nagachika (Tomoyuki C.)
Status: Assigned
Priority: Normal
Assignee: nagachika (Tomoyuki C.)
Category:
Target version: