Bug #20569: Instruction sequence generated from `shareable_constant_value: literal` files may not be serialized to binary

• Status: Closed
• Assignee: ko1 (Koichi Sasada)
• Target version: -
• Backport: 3.1: WONTFIX, 3.2: DONE, 3.3: DONE

[byroot (Jean Boussier)]

iseq = RubyVM::InstructionSequence.compile(<<~'RUBY')
  # shareable_constant_value: literal
  REGEXP = /#{}/
RUBY
iseq.to_binary

in `to_binary': ibf_dump_object_unsupported: 0x00000001026ac8b0 [3LM    ] T_ICLASS  (NotImplementedError)

The reason is that the ISeq contains putobject RubyVM::FrozenCore so compile.c need some special handling of that hidden class.

Proposed patch: https://github.com/ruby/ruby/pull/10951

[byroot (Jean Boussier)]

• Status changed from Open to Closed

Applied in changeset git|f0001a4fa7260d0c39e9ddba162f51c549cba2f8.

---

compile.c: use putspecialobject for RubyVM::FrozenCore

[Bug #20569]

putobject RubyVM::FrozenCore, is not serializable, we
have to use putspecialobject VM_SPECIAL_OBJECT_VMCORE.

[byroot (Jean Boussier)]

I created backport PRs:

• 3.2: https://github.com/ruby/ruby/pull/10963
• 3.3: https://github.com/ruby/ruby/pull/10962

[k0kubun (Takashi Kokubun)]

• Backport changed from 3.1: WONTFIX, 3.2: REQUIRED, 3.3: REQUIRED to 3.1: WONTFIX, 3.2: REQUIRED, 3.3: DONE

ruby_3_3 8951040aadca57fce633b0f714248de78a962c22.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 3.1: WONTFIX, 3.2: REQUIRED, 3.3: DONE to 3.1: WONTFIX, 3.2: DONE, 3.3: DONE

ruby_3_2 e0e1a0f502fe57e7e7e8cf643b8f141b4582d62d.