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Zachary D. Rowitsch 93e0875dee
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Re-curate Test262 suite: expand to built-ins, add 500 tier-1 tests
Tier-1 (vendored PR gate): 751 → 1,251 tests (884 pass, 71%)
  - Added 500 tests across ASI, expressions, literals, keywords,
    identifiers, line-terminators, future-reserved-words, and more
  - 298 of 500 new tests pass immediately

Tier-2 (full upstream): 4,745 → 15,435 tests (3,230 pass, 21%)
  - scan_test262.py now scans both language/ and built-ins/ by default
  - Promoted 943 newly passing built-in tests (Boolean, Object, Array,
    String, Number, Function, etc.)
  - Skipped 4 flaky property-enumeration-order tests

Also fixed scan script to emit reason field for skip status entries.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-24 06:44:07 -05:00

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JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object-initializer-static-semantics-early-errors
es6id: 12.2.6.1
description: Initialized name is explicitly barred from object initializers
info: |
PropertyDefinition : CoverInitializedName
- Always throw a Syntax Error if code matches this production.
NOTE This production exists so that ObjectLiteral can serve as a cover
grammar for ObjectAssignmentPattern. It cannot occur in an actual object
initializer.
12.2.6 Object Initializer
Syntax
[...]
CoverInitializedName[Yield]:
IdentifierReference[?Yield] Initializer[+In, ?Yield]
negative:
phase: parse
type: SyntaxError
---*/
$DONOTEVALUATE();
({ a = 1 });