[Webkit-unassigned] [Bug 260542] New: Wasm element segment vector items should allow more constant expressions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260542

            Bug ID: 260542
           Summary: Wasm element segment vector items should allow more
                    constant expressions
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: asumu at igalia.com

Right now a Wasm module element segment's initialization vector can only contain either `ref.func` or `ref.null`.

This fails for test examples such as the following from the extended const proposal repo:

https://github.com/WebAssembly/extended-const/blob/7612271a72f00e2b385a98a7f79a031f94fb77e6/test/core/elem.wast#L680

(this particular test doesn't actually depend on extended constant expressions, it should parse in current Wasm)

The Wasm spec allows `global.get` to appear in the element vector:

  https://webassembly.github.io/spec/core/valid/instructions.html#constant-expressions

In the future, there will be other kinds of elements that will be legal with the GC proposal.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20230822/9f2f193e/attachment.htm>