Feature #13985: Avoid exception for #dup/#clone on Rational and Complex

• Status: Closed
• Assignee: -
• Target version: 2.5

[Eregon (Benoit Daloze)]

Since #12979, true/false/nil/Integer/Float just return themselves on #dup/#clone.

But it seems a few were missed, notably mentioned in https://bugs.ruby-lang.org/issues/12979#note-15.

Rational and Complex seems obvious candidates for supporting #dup/#clone returning itself as well since they are pretty much values.

Rational and Complex are currently not frozen though (see #13983).

Kasper (in the comment linked above) also mentions Method, but I think that's worth its own issue as it's no longer simple numeric values.

Note that BigDecimal is currently not frozen, but supports #dup/#clone (returning a new instance) (see #13984).

[Eregon (Benoit Daloze)]

• Related to Feature #13984: BigDecimal should be immutable/frozen and return itself on #dup added

[Eregon (Benoit Daloze)]

• Related to Feature #12979: Avoid exception for #dup on Integer (and similar cases) added

[Eregon (Benoit Daloze)]

• Related to Feature #13983: Rational and Complex should be frozen added

[nobu (Nobuyoshi Nakada)]

• Is duplicate of Bug #13237: Behavior for #dup and #clone on Rational/Complex/BigDecimal differs from Integer/Float added

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed