End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Object#taint

obj.taint → obj

VALUE
rb_obj_taint(VALUE obj)
{
    rb_warn_deprecated_to_remove_at(3.2, "Object#taint", NULL);
    return obj;
}

Returns object. This method is deprecated and will be removed in Ruby 3.2.

See also #singleton_methods #tainted? #singleton_method #to_enum also in 3.0