Resolving "rb_check_safe_obj will be removed in Ruby 3.0" warning
Augusts Bautra
Posted on January 14, 2022
TL;DR Paste this in an initializer or very early in require chain.
# Problem on Ruby 2.7
# > BigDecimal(1).to_s("F")
# (pry):1: warning: rb_check_safe_obj will be removed in Ruby 3.0
# This monkeypatch silences it.
# TODO: remove when on Ruby 3+
module BigDecimalFormatWarningSuppressor
# NOTE: this API comes from ActiveSupport::NumericWithFormat, the last ancestor prepended to
# BigDecimal.
def to_s(format = nil, options = nil)
original_verbosity = $VERBOSE
$VERBOSE = nil
v = super
$VERBOSE = original_verbosity
v
end
end
BigDecimal.prepend(BigDecimalFormatWarningSuppressor)
Discussion
Not sure what the deal is with BigDecimal's string formatting, but we can see in #to_s's source that it does indeed call rb_check_safe_obj function and it apparently is whiny.
Setting $VERBOSE to nil is the same as running with RUBYOPT=-W0.
💖 💪 🙅 🚩
Augusts Bautra
Posted on January 14, 2022
Join Our Newsletter. No Spam, Only the good stuff.
Sign up to receive the latest update from our blog.