Feature #13984: BigDecimal should be immutable/frozen and return itself on #dup

• Status: Closed
• Assignee: mrkn (Kenta Murata)
• Target version: -

[Eregon (Benoit Daloze)]

Currently, BigDecimal instances are not frozen, and supports #dup by returning a new instance.

In the spirit of #12979 and #13983, I think BigDecimal instances should always be frozen.
Then BigDecimal#dup/clone should just return the same instance.

[Eregon (Benoit Daloze)]

• Related to Feature #13985: Avoid exception for #dup/#clone on Rational and Complex added

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Assigned
• Assignee set to mrkn (Kenta Murata)

[mrkn (Kenta Murata)]

I decided to make a BigDecimal is frozen and remove dup-support.
But it introduces incompatibilities, so during Ruby 2.5 period, I'll make them deprecated and issue warning messages.

[mrkn (Kenta Murata)]

The corresponding issue in GitHub: https://github.com/ruby/bigdecimal/issues/84

[mrkn (Kenta Murata)]

• Target version set to 2.6

[naruse (Yui NARUSE)]

• Target version deleted (2.6)

[mrkn (Kenta Murata)]

• Status changed from Assigned to Closed

Fixed in r66222