Bug 320150 – generateWasmOpsHeader.py makes an error without UTF-8 environments

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

Source\JavaScriptCore\wasm\generateWasmOpsHeader.py requires UTF-8 encoding, but in a Japanese environment on Windows, CP932 is used by default.
Therefore, there are characters that cannot be interpreted, and an error occurs.

"—" is not defined on CP932.

// CompactPointerTuple packs pointer + uint8 kind bits on ADDRESS64 (one word);
// on 32-bit it is a real { pointer, type } pair (same API).
// TypeKind is a signed int8_t enum, so the tag is the uint8_t bit pattern.
//   Bare kinds — pointer null, tag = TypeKind bits
//   Concrete ref/ref_null — pointer = TypeIndex (RTT* / parse-time tagged ptr), tag = Ref/RefNull
//   Abstract ref/ref_null — pointer holds TypeIndexTag (1..NumberOfTags-1), tag = Ref/RefNull
// Abstract TypeIndex may use EnumTaggingTraits high tags on ADDRESS64 and cannot live in the
// pointer half as a full tagged index, so abstract heaps store only TypeIndexTag and rebuild
// in index().

Pull request: https://github.com/WebKit/WebKit/pull/70092

[EWS]

Committed 317960@main (244cd98f7986): <https://commits.webkit.org/317960@main>

Reviewed commits have been landed. Closing PR #70092 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/183288124>