Issue #15833 has been reported by wanabe (_ wanabe).

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Feature #15833: Some refactors for shared-root array
https://bugs.ruby-lang.org/issues/15833

* Author: wanabe (_ wanabe)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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I wrote some patches for shared-root array.
But I can't decide whether to commit them because they include the modification of public header `include/ruby/ruby.h`.

To ruby core team (I'm not assuming anyone in particular):
Can I modify `include/ruby/ruby.h` by the patches?

The following is descriptions of the patches.

`0001-Name-RArray-member-to-count-reference-of-shared-root.patch` names reference count of shared-root array.
So far, `as.heap.aux.capa` is used as reference count but it is different from the reality, reference count.
This is a follow up of r19824.

`0002-Export-RARRAY_SHARED_ROOT_FLAG.patch` exports RARRAY_SHARED_ROOT_FLAG.
I followed other flags as in RARRAY_EMBED_FLAG or RARRAY_TRANSIENT_FLAG.

`0003-Fix-object-info-of-shared-root-array.patch` is not a refactor but feature request patch based on above ones.
`rb_obj_info` outputs shared-root array info as same as normal array currently, but its capa is not a really "capa" as I said.

---Files--------------------------------
0001-Name-RArray-member-to-count-reference-of-shared-root.patch (1.42 KB)
0002-Export-RARRAY_SHARED_ROOT_FLAG.patch (1.54 KB)
0003-Fix-object-info-of-shared-root-array.patch (1.04 KB)


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