End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
String#to_s
str.to_s → str
string.c
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static VALUE
rb_str_to_s(VALUE str)
{
if (rb_obj_class(str) != rb_cString) {
return str_duplicate(rb_cString, str);
}
return str;
}