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.
Top comments (1)
@epigene thank you very much for this article!
It made really easy to figure out what was going on and how to solve it with a quick google search 👏🏿
I would suggest to use Kernel#silence_warnings inside of
to_sinstead. Tested it locally and doesn't seem to have any disadvantage. What do you think?