9 Feb
2023
9 Feb
'23
4:10 p.m.
Issue #19427 has been reported by andrykonchin (Andrew Konchin).
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Bug #19427: Marshal.load(source, freeze: true) doesn't freeze in some cases
https://bugs.ruby-lang.org/issues/19427
* Author: andrykonchin (Andrew Konchin)
* Status: Open
* Priority: Normal
* ruby -v: 3.1
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
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I've noticed that the `freeze` option doesn't work in the following cases:
- when dumped object extends a module
- when dumped object responds to `#marshal_dump` and `#marshal_load` methods
- when dumped object responds to `#_dump` method
Is it expected behaviour or a known issue?
Examples:
```ruby
module M
end
object = Object.new
object.extend(M)
object = Marshal.load(Marshal.dump(object), freeze: true)
object.frozen? # => false
```
```ruby
class UserMarshal
attr_accessor :data
def initialize
@data = 'stuff'
end
def marshal_dump() :data end
def marshal_load(data) @data = data end
end
object = Marshal.load(Marshal.dump(UserMarshal.new), freeze: true)
object.frozen? # => false
```
```ruby
class UserDefined
attr_reader :a, :b
def initialize
@a = 'stuff'
@b = @a
end
def _dump(depth)
Marshal.dump [:stuff, :stuff]
end
def self._load(data)
a, b = Marshal.load data
obj = allocate
obj.instance_variable_set :@a, a
obj.instance_variable_set :@b, b
obj
end
end
```
--
https://bugs.ruby-lang.org/