Bug #11884: Psych.load broken for OpenStruct in Ruby 2.3.0

• Status: Closed
• Assignee: marcandre (Marc-Andre Lafortune)
• Target version: -
• ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

[kaikuchn (Kai Kuchenbecker)]

Deserialising an OpenStruct through Psych::load results in a nil error since OpenStruct now has a respond_to_missing? method whose implementation references OpenStruct's @table instance variable.

To reproduce this issue simply use Psych to dump an OpenStruct and then load it again via Psych::load. I attached an example script that does exactly this. I have also attached the error output I get when running this script.

I'm not sure whether to assign marcandre or tenderlove... Please tell me if you need any further information.

Best regards,
Kai

[kaikuchn (Kai Kuchenbecker)]

• Description updated (diff)

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r53366.

---

ostruct.rb: respond_to?

• lib/ostruct.rb (OpenStruct): make respond_to? working on
  just-allocated objects for workaround of Psych.
  [ruby-core:72501] [Bug #11884]

[nobu (Nobuyoshi Nakada)]

• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED

[marcandre (Marc-Andre Lafortune)]

• Has duplicate Bug #11966: YAML#load fails with OpenStruct object added

[marcandre (Marc-Andre Lafortune)]

• Has duplicate Bug #12140: Serialization of OpenStruct objects with YAML fails added

[naruse (Yui NARUSE)]

• Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

ruby_2_3 r54387 merged revision(s) 53366.

[PSchambacher (Pierre Schambacher)]

• File syck_error.log syck_error.log added
• File syck_error.rb syck_error.rb added

I'm sorry to re-open this but I'm getting a similar error with Syck and Ruby 2.3.1 just released
I attached a repro script and the log that I get when running it. Like psych, the @table instance variable of the OpenStruct isn't initialized when respond_to_missing? gets called.

[marcandre (Marc-Andre Lafortune)]

• Has duplicate Bug #12349: Can't load OpenStruct with Syck with Ruby 2.3.x added

[nobu (Nobuyoshi Nakada)]

• Related to Bug #13358: OpenStruct overriding allocate added