Bug #20927: `{ **{ } }` behaves differently when `shareable_constant_value: experimental_everything`

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.3.4 (2024-07-16 revision 425e468d25) [arm64-darwin23]
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[tenderlovemaking (Aaron Patterson)]

These two programs produce different results

# shareable_constant_value: experimental_everything

C = { **{ } }

p C

C = { **{ } }

p C

The first one prints this:

$ ruby test.rb
{nil=>{}}

The second one prints this:

$ ruby test.rb
{}

I think they should print the same thing.

[tenderlovemaking (Aaron Patterson)]

• Related to Bug #20926: shareable_constant_value: experimental_everything crashes with parse.y added

[tenderlovemaking (Aaron Patterson)]

• Related to Bug #20916: Prism compiler should support ** in Ractor constant added

[tompng (tomoya ishida)]

Pull request: https://github.com/ruby/ruby/pull/12338

[tompng (tomoya ishida)]

• Status changed from Open to Closed

Applied in changeset git|e06b3b5ad1f6453ebebc5d9a54d82e3bb2ab116f.

---

[Bug #20927] Fix compile_shareable_literal_constant for hash with keyword splat

Compilation of NODE_HASH in compile_shareable_literal_constant does not support hash that contains keyword splat.
If there is a keyword splat, fallback to default case.