Bug #21440: Cannot create instances of frozen Data subclasses

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED

[jeremyevans0 (Jeremy Evans)]

This fails since Data was added in Ruby 3.2:

Class.new(Data.define(:a)).freeze.new
# can't modify frozen #<Class:#<Class:0x000079cf41253160>>: #<Class:0x000079cf41253160> (FrozenError)

Note that the error occurs even before the ArgumentError due to the missing argument to new.

This doesn't happen on classes created with Data.define (only subclasses of those classes):

Data.define(:a).freeze.new
# missing keyword: :a (ArgumentError)

[nobu (Nobuyoshi Nakada)]

Also Class.new(Struct.new(:a)).freeze.new.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|2e7e78cd590d20aa9d41422e96302f3edd73f623.

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[Bug #21440] Stop caching member list in frozen Data/Struct class