bignum too big to convert into `long' (RangeError)

[casperisfine]

On current ruby 3.1:

>> BigDecimal::VERSION
=> "3.1.0-dev"
>> BigDecimal(-10000000000000000000)
(irb):2:in `BigDecimal': bignum too big to convert into `long' (RangeError)

On 3.0:

>> BigDecimal::VERSION
=> "3.0.0"
>> BigDecimal(-10000000000000000000)
=> -0.1e20

[casperisfine]

Actually, it seems that the trigger is Ruby 3.1 and not the latest bigdecimal version. I'll try to track this down.

[casperisfine]

Ok, so the problem is in 4792a91

When dealing with signed integers, comparing rb_absint_size to sizeof long is no longer correct.

cc @mrkn

[mrkn]

@casperisfine Thank you for reporting and investigating this!

[casperisfine]

Thanks for the merge!