test262 language misc tail — 429 (self-contained worklist)

[proggeramlug]

Self-contained worklist — 429 failing (language tail, not covered by the focused tickets). Snapshot 2026-07-01 (perry 0.5.1209, node v26.3.0). Everything is inline; no history, no re-measure.

Assorted language subtrees below. Pick a coherent single-root subcluster. ⚠️ In language, async-generator yield* cases belong to #5745 — skip them.

Setup (any box)

git clone https://github.com/PerryTS/perry && cd perry
cargo build --release -p perry -p perry-runtime-static -p perry-stdlib-static
git clone --depth 1 https://github.com/tc39/test262 vendor/test262   # checkout test-compat/test262/pinned-sha.txt

By area

language/expressions 280 · language/statements 95 · language/arguments-object 14 · language/literals 14 · language/types 7 · language/computed-property-names 6 · language/global-code 5 · language/directive-prologue 4 · language/comments 2 · language/identifier-resolution 1 · language/reserved-words 1

All 429 failing cases (path — reason)

language/arguments-object/mapped/Symbol.iterator.js    Uncaught exception: Symbol(Symbol.iterator) should be an own property
language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-2.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-3.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-delete-4.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-nonwritable-3.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-2.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-3.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonconfigurable-strict-delete-4.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/arguments-object/mapped/mapped-arguments-nonwritable-nonconfigurable-3.js    TypeError: Cannot assign to read only property '0' of object '#<Object>'
language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-set-by-param.js    Uncaught exception: 0 descriptor value should be 2; 0 value should be 2
language/arguments-object/mapped/nonconfigurable-nonwritable-descriptors-set-by-param.js    Uncaught exception: 0 descriptor value should be 2; 0 value should be 2
language/arguments-object/mapped/nonwritable-nonconfigurable-descriptors-set-by-arguments.js    TypeError: Cannot assign to read only property '0' of object '#<Object>'
language/arguments-object/mapped/nonwritable-nonenumerable-nonconfigurable-descriptors-set-by-arguments.js    TypeError: Cannot assign to read only property '0' of object '#<Object>'
language/arguments-object/unmapped/Symbol.iterator.js    Uncaught exception: Symbol(Symbol.iterator) should be an own property
language/comments/S7.4_A5.js    Uncaught exception: #0000
language/comments/S7.4_A6.js    Uncaught exception: #0000 throws
language/computed-property-names/class/method/constructor.js    Uncaught exception: The result of `C !== C.prototype.constructor` is `true`
language/computed-property-names/class/method/symbol.js    Uncaught exception: Actual [] and expected [Symbol(), Symbol()] should have the 
language/computed-property-names/object/accessor/getter-super.js    TypeError: Cannot convert undefined or null to object
language/computed-property-names/object/accessor/setter-super.js    TypeError: Cannot convert undefined or null to object
language/computed-property-names/object/method/super.js    TypeError: Cannot convert undefined or null to object
language/computed-property-names/object/property/number-duplicates.js    Uncaught exception: The value of `object[Infinity]` is `'E'`. Defined as `[Infin
language/directive-prologue/10.1.1-11-s.js    Uncaught exception: err instanceof SyntaxError
language/directive-prologue/10.1.1-30-s.js    Error compiling module 'case.js' (<staged-case> with --backend llvm: clang -c fa
language/directive-prologue/10.1.1-31-s.js    ReferenceError: public is not defined
language/directive-prologue/10.1.1-32-s.js    ReferenceError: public is not defined
language/expressions/arrow-function/arrow/binding-tests-1.js    Uncaught exception: This binding initialization was incorrect for arrow capturin
language/expressions/arrow-function/arrow/binding-tests-2.js    Uncaught exception: This binding initialization was incorrect for arrow capturin
language/expressions/arrow-function/arrow/binding-tests-3.js    Uncaught exception: This binding initialization was incorrect for arrow capturin
language/expressions/arrow-function/lexical-super-call-from-within-constructor.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/assignment/destructuring/iterator-destructuring-property-reference-target-evaluation-order.js    Uncaught exception: Actual [source, iterator, target, target-key, iterator-step,
language/expressions/assignment/destructuring/keyed-destructuring-property-reference-target-evaluation-order-with-bindings.js    Uncaught exception: Actual [binding::source, binding::sourceKey, sourceKey, bind
language/expressions/assignment/destructuring/keyed-destructuring-property-reference-target-evaluation-order.js    Uncaught exception: Actual [source, source-key, source-key-tostring, target, tar
language/expressions/assignmenttargettype/simple-basic-identifierreference-await.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7180..7181, TS
language/expressions/async-arrow-function/prototype.js    Uncaught exception: this implementation could not obtain %AsyncFunction%
language/expressions/async-arrow-function/try-reject-finally-reject.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Awaited rejection in finall
language/expressions/async-arrow-function/try-reject-finally-return.js    Test262:AsyncTestFailure:Test262Error: early-reject
language/expressions/async-arrow-function/try-reject-finally-throw.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Exception thrown in finally
language/expressions/async-function/named-reassign-fn-name-in-body-in-arrow.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-function/named-reassign-fn-name-in-body-in-eval.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-function/named-reassign-fn-name-in-body.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-function/named-strict-error-reassign-fn-name-in-body-in-arrow.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-function/named-strict-error-reassign-fn-name-in-body-in-eval.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-function/named-strict-error-reassign-fn-name-in-body.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-function/try-reject-finally-reject.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Awaited rejection in finall
language/expressions/async-function/try-reject-finally-return.js    Test262:AsyncTestFailure:Test262Error: early-reject
language/expressions/async-function/try-reject-finally-throw.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Exception thrown in finally
language/expressions/async-generator/default-proto.js    Uncaught exception: fn.prototype is undefined Expected SameValue(«[object AsyncG
language/expressions/async-generator/named-no-strict-reassign-fn-name-in-body-in-arrow.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-generator/named-no-strict-reassign-fn-name-in-body-in-eval.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-generator/named-no-strict-reassign-fn-name-in-body.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«1», «as
language/expressions/async-generator/named-strict-error-reassign-fn-name-in-body-in-arrow.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-generator/named-strict-error-reassign-fn-name-in-body-in-eval.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-generator/named-strict-error-reassign-fn-name-in-body.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected true but got false
language/expressions/async-generator/named-yield-star-sync-next.js    Test262:AsyncTestFailure:Test262Error: Test262Error: get [Symbol.iterator] thisV
language/expressions/async-generator/yield-star-sync-next.js    Test262:AsyncTestFailure:Test262Error: Test262Error: get [Symbol.iterator] thisV
language/expressions/await/async-generator-interleaved.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [await, await, 1, 2]
language/expressions/await/await-BindingIdentifier-in-global.js    Parse warning: Error { error: (7174..7179, TopLevelAwaitInScript) }
language/expressions/await/await-in-nested-function.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7210..7211, TS
language/expressions/await/await-in-nested-generator.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7244..7245, TS
language/expressions/await/for-await-of-interleaved.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [Promise: 6, Await: 
language/expressions/bitwise-and/bigint-and-number.js    Uncaught exception: Object(1n) & 1 throws TypeError Expected a TypeError to be t
language/expressions/bitwise-and/bigint-non-primitive.js    TypeError: Cannot mix BigInt and other types, use explicit conversions
language/expressions/bitwise-or/bigint-and-number.js    Uncaught exception: Object(1n) | 1 throws TypeError Expected a TypeError to be t
language/expressions/bitwise-or/bigint-non-primitive.js    TypeError: Cannot mix BigInt and other types, use explicit conversions
language/expressions/bitwise-xor/bigint-and-number.js    Uncaught exception: Object(1n) ^ 1 throws TypeError Expected a TypeError to be t
language/expressions/bitwise-xor/bigint-non-primitive.js    TypeError: Cannot mix BigInt and other types, use explicit conversions
language/expressions/call/11.2.3-3_3.js    Uncaught exception: fooCalled Expected SameValue(«true», «false») to be true
language/expressions/call/eval-err-args.js    Uncaught exception: Expected a ReferenceError but got a Error
language/expressions/call/eval-first-arg.js    Uncaught exception: #1: eval("x = 1", "x = 2"); x === 1. Actual: undefined
language/expressions/call/eval-spread-empty-trailing.js    Uncaught exception: Expected SameValue(«"local"», «0») to be true
language/expressions/call/spread-err-mult-err-iter-get-value.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/call/with-base-obj.js    Uncaught exception: via CallExpression Expected SameValue(«[object Object]», «[o
language/expressions/delete/11.4.1-3-2.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/delete/11.4.1-4.a-12.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/11.4.1-4.a-13.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/11.4.1-4.a-5.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/11.4.1-4.a-7.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/11.4.1-4.a-9-s.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/delete/11.4.1-5-1.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/11.4.1-5-3.js    Uncaught exception: d Expected SameValue(«true», «false») to be true
language/expressions/delete/S11.4.1_A3.1.js    Uncaught exception: #1: var x = 1; delete x === false
language/expressions/delete/S11.4.1_A3.3_T1.js    Uncaught exception: #1: x = 1; delete x; x is not exist
language/expressions/delete/S11.4.1_A3.3_T4.js    Uncaught exception: #1: function MyFunction(){}; var MyObjectVar = new MyFunctio
language/expressions/division/bigint-and-number.js    Uncaught exception: Object(1n) / 1 throws TypeError Expected a TypeError to be t
language/expressions/function/arguments-with-arguments-fn.js    ReferenceError: arguments is not defined
language/expressions/function/arguments-with-arguments-lex.js    ReferenceError: arguments is not defined
language/expressions/function/named-no-strict-reassign-fn-name-in-body-in-arrow.js    Uncaught exception: Expected SameValue(«1», «function BindingIdentifier() {
language/expressions/function/named-no-strict-reassign-fn-name-in-body-in-eval.js    Uncaught exception: Expected SameValue(«1», «function BindingIdentifier() {
language/expressions/function/named-no-strict-reassign-fn-name-in-body.js    Uncaught exception: Expected SameValue(«1», «function BindingIdentifier() {
language/expressions/function/named-strict-error-reassign-fn-name-in-body-in-arrow.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/function/named-strict-error-reassign-fn-name-in-body-in-eval.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/function/named-strict-error-reassign-fn-name-in-body.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/function/params-dflt-ref-arguments.js    Uncaught exception: first parameter Expected SameValue(«undefined», «"third"») t
language/expressions/function/scope-name-var-open-non-strict.js    Uncaught exception: inner binding is immutable (from parameters) Expected SameVa
language/expressions/function/scope-name-var-open-strict.js    Uncaught exception: inner binding rejects modification (from parameters) Expecte
language/expressions/function/static-init-await-binding.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7384..7389, Ex
language/expressions/generators/arguments-with-arguments-fn.js    ReferenceError: arguments is not defined
language/expressions/generators/arguments-with-arguments-lex.js    ReferenceError: arguments is not defined
language/expressions/generators/default-proto.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Generator]») 
language/expressions/generators/has-instance.js    Uncaught exception: Instance created via function invocation
language/expressions/generators/invoke-as-constructor.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/generators/named-no-strict-reassign-fn-name-in-body-in-arrow.js    Uncaught exception: Expected SameValue(«1», «function * BindingIdentifier() {
language/expressions/generators/named-no-strict-reassign-fn-name-in-body-in-eval.js    Uncaught exception: Expected SameValue(«1», «function * BindingIdentifier() {
language/expressions/generators/named-no-strict-reassign-fn-name-in-body.js    Uncaught exception: Expected SameValue(«1», «function * BindingIdentifier() {
language/expressions/generators/named-strict-error-reassign-fn-name-in-body-in-arrow.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/generators/named-strict-error-reassign-fn-name-in-body-in-eval.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/generators/named-strict-error-reassign-fn-name-in-body.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/generators/params-dflt-ref-arguments.js    Uncaught exception: first parameter Expected SameValue(«undefined», «"third"») t
language/expressions/generators/prototype-property-descriptor.js    TypeError: Cannot read properties of undefined (reading 'enumerable')
language/expressions/generators/prototype-relation-to-function.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Function]») t
language/expressions/generators/scope-name-var-open-non-strict.js    Uncaught exception: inner binding is immutable (from parameters) Expected SameVa
language/expressions/generators/scope-name-var-open-strict.js    Uncaught exception: inner binding rejects modification (from parameters) Expecte
language/expressions/generators/static-init-await-binding.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7387..7392, Ex
language/expressions/greater-than-or-equal/S11.8.4_A4.12_T1.js    Uncaught exception: #10: ("\u{10000}" >= "\uFFFF") === false
language/expressions/greater-than-or-equal/bigint-and-number-extremes.js    Uncaught exception: The result of (1n >= Number.MAX_VALUE) is false Expected Sam
language/expressions/greater-than/S11.8.2_A4.12_T1.js    Uncaught exception: #10: ("\u{10000}" > "\uFFFF") === false
language/expressions/greater-than/bigint-and-number-extremes.js    Uncaught exception: The result of (1n > Number.MAX_VALUE) is false Expected Same
language/expressions/in/S11.8.7_A3.js    Uncaught exception: #1: "toString" in true throw TypeError
language/expressions/in/S11.8.7_A4.js    Uncaught exception: #1: "var object = {}; object["true"] = 1; true in object ===
language/expressions/instanceof/S11.8.6_A2.1_T3.js    Uncaught exception: #1.2: ({}) instanceof OBJECT throw ReferenceError. Actual: T
language/expressions/instanceof/S11.8.6_A2.4_T4.js    Uncaught exception: #1: (OBJECT = Object, {}) instanceof OBJECT !== true
language/expressions/instanceof/S11.8.6_A6_T2.js    Uncaught exception: #1: 1 instanceof Math throw TypeError
language/expressions/instanceof/S15.3.5.3_A2_T2.js    Uncaught exception: #1.1: O is not an object, throw a TypeError exception
language/expressions/instanceof/S15.3.5.3_A2_T5.js    Uncaught exception: #1.1: O is not an object, throw a TypeError exception
language/expressions/instanceof/S15.3.5.3_A2_T6.js    Uncaught exception: #1.1: O is not an object, throw a TypeError exception
language/expressions/instanceof/S15.3.5.3_A3_T2.js    Uncaught exception: #2: If O and V refer to the same object or if they refer to 
language/expressions/instanceof/primitive-prototype-with-object.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/instanceof/prototype-getter-with-object-throws.js    Uncaught exception: Expected a DummyError to be thrown but no exception was thro
language/expressions/instanceof/prototype-getter-with-object.js    Uncaught exception: [] should be instance of Function.prototype
language/expressions/left-shift/S11.7.1_A5.2_T1.js    (no output)
language/expressions/left-shift/bigint-and-number.js    Uncaught exception: Object(1n) << 1 throws TypeError Expected a TypeError to be 
language/expressions/less-than-or-equal/S11.8.3_A4.12_T1.js    Uncaught exception: #10: ("\u{10000}" <= "\uFFFF") === true
language/expressions/less-than-or-equal/bigint-and-number-extremes.js    Uncaught exception: The result of (1n <= Number.MAX_VALUE) is true Expected Same
language/expressions/less-than/S11.8.1_A4.12_T1.js    Uncaught exception: #10: ("\u{10000}" < "\uFFFF") === true
language/expressions/less-than/bigint-and-number-extremes.js    Uncaught exception: The result of (1n < Number.MAX_VALUE) is true Expected SameV
language/expressions/logical-assignment/lgcl-and-assignment-operator-lhs-before-rhs.js    Uncaught exception: obj[incr()] &&= incr() Expected SameValue(«4», «3») to be tr
language/expressions/logical-assignment/lgcl-nullish-assignment-operator-lhs-before-rhs.js    Uncaught exception: obj[incr()] ??= incr() Expected SameValue(«3», «2») to be tr
language/expressions/logical-assignment/lgcl-or-assignment-operator-lhs-before-rhs.js    Uncaught exception: obj[incr()] ||= incr() Expected SameValue(«3», «2») to be tr
language/expressions/modulus/bigint-and-number.js    Uncaught exception: Object(1n) % 1 throws TypeError Expected a TypeError to be t
language/expressions/multiplication/bigint-and-number.js    Uncaught exception: Object(1n) * 1 throws TypeError Expected a TypeError to be t
language/expressions/new/S11.2.2_A2.js    Uncaught exception: #1.2: new x throw ReferenceError. Actual: Test262Error: #1.1
language/expressions/new/S11.2.2_A3_T2.js    Uncaught exception: #2: var x = 1; new x throw TypeError
language/expressions/new/S11.2.2_A3_T4.js    Uncaught exception: #1: new undefined throw TypeError
language/expressions/new/S11.2.2_A4_T4.js    Uncaught exception: #1: new this throw TypeError
language/expressions/new/ctorExpr-isCtor-after-args-eval-fn-wrapup.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/new/ctorExpr-isCtor-after-args-eval.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/new/spread-err-mult-err-iter-get-value.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/object/11.1.5-2gs.js    Uncaught exception: Expected SameValue(«10», «20») to be true
language/expressions/object/11.1.5_4-4-a-3.js    Uncaught exception: o.foo Expected SameValue(«0», «1») to be true
language/expressions/object/accessor-name-computed-yield-expr.js    Uncaught exception: Expected SameValue(«undefined», «"get yield"») to be true
language/expressions/object/concise-generator.js    TypeError: Cannot convert undefined or null to object
language/expressions/object/fn-name-accessor-get.js    Uncaught exception: name descriptor value should be get id; name value should be
language/expressions/object/fn-name-accessor-set.js    Uncaught exception: name descriptor value should be set id; name value should be
language/expressions/object/fn-name-class.js    Uncaught exception: name descriptor value should be ; name value should be
language/expressions/object/getter-super-prop.js    TypeError: Cannot convert undefined or null to object
language/expressions/object/method-definition/async-gen-yield-star-sync-next.js    Test262:AsyncTestFailure:Test262Error: Test262Error: get [Symbol.iterator] thisV
language/expressions/object/method-definition/async-super-call-body.js    TypeError: Cannot convert undefined or null to object
language/expressions/object/method-definition/async-super-call-param.js    TypeError: Cannot convert undefined or null to object
language/expressions/object/method-definition/generator-invoke-ctor.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/object/method-definition/generator-invoke-fn-no-strict.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Object]») to 
language/expressions/object/method-definition/generator-invoke-fn-strict.js    Uncaught exception: Expected SameValue(«[object Object]», «undefined») to be tru
language/expressions/object/method-definition/generator-prop-name-yield-expr.js    Uncaught exception: Expected SameValue(«[object Object]», «null») to be true
language/expressions/object/method-definition/generator-prototype-prop.js    Uncaught exception: prototype descriptor should not be enumerable; prototype des
language/expressions/object/method-definition/generator-super-prop-body.js    Uncaught exception: Expected SameValue(«undefined», «function () { [native code]
language/expressions/object/method-definition/generator-super-prop-param.js    Uncaught exception: Expected SameValue(«undefined», «function () { [native code]
language/expressions/object/method-definition/name-invoke-ctor.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/object/method-definition/name-invoke-fn-no-strict.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Object]») to 
language/expressions/object/method-definition/name-invoke-fn-strict.js    Uncaught exception: Expected SameValue(«[object Object]», «undefined») to be tru
language/expressions/object/method-definition/name-prop-name-yield-expr.js    Uncaught exception: Expected SameValue(«[object Object]», «null») to be true
language/expressions/object/method-definition/name-prototype-prop.js    Uncaught exception: Functions declared as methods do not define a 'prototype' pr
language/expressions/object/method-definition/name-super-prop-body.js    Uncaught exception: Expected SameValue(«undefined», «function () { [native code]
language/expressions/object/method-definition/name-super-prop-param.js    Uncaught exception: Expected SameValue(«undefined», «function () { [native code]
language/expressions/object/method-definition/params-dflt-gen-meth-ref-arguments.js    Uncaught exception: first parameter Expected SameValue(«undefined», «"third"») t
language/expressions/object/method-definition/params-dflt-meth-ref-arguments.js    Uncaught exception: first parameter Expected SameValue(«undefined», «"third"») t
language/expressions/object/method-definition/static-init-await-binding-accessor.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7388..7393, Ex
language/expressions/object/method-definition/static-init-await-binding-generator.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7394..7399, Ex
language/expressions/object/method-definition/static-init-await-binding-normal.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7383..7388, Ex
language/expressions/object/method-definition/static-init-await-reference-accessor.js    Uncaught exception: from parameter Expected SameValue(«undefined», «0») to be tr
language/expressions/object/method.js    TypeError: Cannot convert undefined or null to object
language/expressions/object/not-defined.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/object/prop-def-id-eval-error-2.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/object/prop-def-id-get-error.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/object/prop-dup-get-data.js    TypeError: Cannot assign to read only property 'foo' of object '#<Object>'
language/expressions/object/scope-setter-paramsbody-var-open.js    TypeError: value is not a function
language/expressions/object/setter-super-prop.js    TypeError: Cannot convert undefined or null to object
language/expressions/optional-chaining/eval-optional-call.js    Uncaught exception: fn() returns "global" value from indirect eval Expected Same
language/expressions/optional-chaining/member-expression-async-identifier.js    Perry ran clean; Node rejected (missed negative)
language/expressions/optional-chaining/member-expression.js    Uncaught exception: Expected SameValue(«"a"», «""») to be true
language/expressions/optional-chaining/super-property-optional-call.js    Uncaught exception: Expected true but got false
language/expressions/postfix-decrement/S11.3.2_A6_T3.js    Perry ran clean; Node rejected (missed negative)
language/expressions/postfix-decrement/operator-x-postfix-decrement-calls-putvalue-lhs-newvalue--1.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/postfix-decrement/operator-x-postfix-decrement-calls-putvalue-lhs-newvalue-.js    Uncaught exception: Expected true but got false
language/expressions/postfix-increment/S11.3.1_A6_T3.js    Perry ran clean; Node rejected (missed negative)
language/expressions/postfix-increment/operator-x-postfix-increment-calls-putvalue-lhs-newvalue--1.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/postfix-increment/operator-x-postfix-increment-calls-putvalue-lhs-newvalue-.js    Uncaught exception: Expected true but got false
language/expressions/prefix-decrement/S11.4.5_A6_T3.js    Perry ran clean; Node rejected (missed negative)
language/expressions/prefix-decrement/operator-prefix-decrement-x-calls-putvalue-lhs-newvalue--1.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/prefix-decrement/operator-prefix-decrement-x-calls-putvalue-lhs-newvalue-.js    Uncaught exception: Expected true but got false
language/expressions/prefix-increment/S11.4.4_A6_T3.js    Perry ran clean; Node rejected (missed negative)
language/expressions/prefix-increment/operator-prefix-increment-x-calls-putvalue-lhs-newvalue--1.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/prefix-increment/operator-prefix-increment-x-calls-putvalue-lhs-newvalue-.js    Uncaught exception: Expected true but got false
language/expressions/property-accessors/S11.2.1_A1.2.js    Uncaught exception: #1: Number[\u0009"POSITIVE_INFINITY"\u0009] === Number.POSIT
language/expressions/property-accessors/S11.2.1_A2.js    Uncaught exception: #1.2: object[1] throw ReferenceError. Actual: Test262Error: 
language/expressions/property-accessors/S11.2.1_A4_T2.js    Uncaught exception: #2: typeof Object["prototype"] === "object". Actual: undefin
language/expressions/property-accessors/S11.2.1_A4_T3.js    Uncaught exception: #1: typeof Function.prototype === "function". Actual: object
language/expressions/property-accessors/S11.2.1_A4_T4.js    Uncaught exception: #2: typeof Array["prototype"] === "object". Actual: undefine
language/expressions/property-accessors/S11.2.1_A4_T5.js    Uncaught exception: #2: typeof String["prototype"] === "object". Actual: undefin
language/expressions/property-accessors/S11.2.1_A4_T6.js    Uncaught exception: #2: typeof Boolean["prototype"] === "object". Actual: undefi
language/expressions/property-accessors/S11.2.1_A4_T7.js    Uncaught exception: #2: typeof Number["MAX_VALUE"] === "number". Actual: undefin
language/expressions/property-accessors/S11.2.1_A4_T8.js    Uncaught exception: #2: typeof Math["E"] === "number". Actual: undefined
language/expressions/property-accessors/S11.2.1_A4_T9.js    Uncaught exception: #4: typeof Date["prototype"] === "object". Actual: undefined
language/expressions/right-shift/S11.7.2_A5.2_T1.js    (no output)
language/expressions/right-shift/bigint-and-number.js    Uncaught exception: Object(1n) >> 1 throws TypeError Expected a TypeError to be 
language/expressions/subtraction/bigint-and-number.js    Uncaught exception: Object(1n) - 1 throws TypeError Expected a TypeError to be t
language/expressions/super/call-bind-this-value-twice.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/call-bind-this-value.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Object]») to 
language/expressions/super/call-expr-value.js    Uncaught exception: Expected SameValue(«undefined», «[object Object]») to be tru
language/expressions/super/call-poisoned-underscore-proto.js    Uncaught exception: Expected SameValue(«0», «1») to be true
language/expressions/super/call-proto-not-ctor.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/call-spread-err-mult-err-expr-throws.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-mult-err-iter-get-value.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/super/call-spread-err-mult-err-itr-get-call.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-mult-err-itr-get-get.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-mult-err-itr-step.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-mult-err-itr-value.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-sngl-err-expr-throws.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-sngl-err-itr-get-call.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-sngl-err-itr-get-get.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-sngl-err-itr-get-value.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/expressions/super/call-spread-err-sngl-err-itr-step.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-err-sngl-err-itr-value.js    Uncaught exception: Expected a Test262Error to be thrown but no exception was th
language/expressions/super/call-spread-mult-empty.js    Uncaught exception: Expected SameValue(«0», «3») to be true
language/expressions/super/call-spread-mult-expr.js    Uncaught exception: Expected SameValue(«0», «5») to be true
language/expressions/super/call-spread-mult-iter.js    Uncaught exception: Expected SameValue(«0», «5») to be true
language/expressions/super/call-spread-mult-literal.js    Uncaught exception: Expected SameValue(«0», «5») to be true
language/expressions/super/call-spread-sngl-expr.js    Uncaught exception: Expected SameValue(«0», «3») to be true
language/expressions/super/call-spread-sngl-iter.js    Uncaught exception: Expected SameValue(«0», «2») to be true
language/expressions/super/call-spread-sngl-literal.js    Uncaught exception: Expected SameValue(«0», «3») to be true
language/expressions/super/prop-dot-cls-null-proto.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-dot-cls-this-uninit.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-dot-cls-val-from-eval.js    SyntaxError: Unexpected eval or arguments in strict mode
language/expressions/super/prop-dot-obj-null-proto.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-dot-obj-ref-non-strict.js    TypeError: Cannot assign to read only property 'x' of object '#<Object>'
language/expressions/super/prop-dot-obj-ref-strict.js    TypeError: Cannot assign to read only property 'x' of object '#<Object>'
language/expressions/super/prop-dot-obj-ref-this.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-dot-obj-val-from-arrow.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-dot-obj-val-from-eval.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-dot-obj-val.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-cls-null-proto.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-expr-cls-this-uninit.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-expr-cls-val-from-eval.js    SyntaxError: Unexpected eval or arguments in strict mode
language/expressions/super/prop-expr-getsuperbase-before-topropertykey-getvalue.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-getsuperbase-before-topropertykey-putvalue-compound-assign.js    Error: Unsupported target in compound assignment
language/expressions/super/prop-expr-getsuperbase-before-topropertykey-putvalue-increment.js    Error: Update expression only supports identifiers and member expressions
language/expressions/super/prop-expr-getsuperbase-before-topropertykey-putvalue.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-obj-key-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/super/prop-expr-obj-null-proto.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/super/prop-expr-obj-ref-non-strict.js    TypeError: Cannot assign to read only property 'x' of object '#<Object>'
language/expressions/super/prop-expr-obj-ref-strict.js    TypeError: Cannot assign to read only property 'x' of object '#<Object>'
language/expressions/super/prop-expr-obj-ref-this.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-obj-val-from-arrow.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-obj-val-from-eval.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-obj-val.js    TypeError: Cannot convert undefined or null to object
language/expressions/super/prop-expr-uninitialized-this-getvalue.js    Error compiling module 'case.js' (<staged-case> with --backend llvm: clang -c fa
language/expressions/super/prop-expr-uninitialized-this-putvalue-compound-assign.js    Error: Unsupported target in compound assignment
language/expressions/super/prop-expr-uninitialized-this-putvalue-increment.js    Error: Update expression only supports identifiers and member expressions
language/expressions/super/prop-expr-uninitialized-this-putvalue.js    Uncaught exception: Expected a ReferenceError but got a Test262Error
language/expressions/super/prop-poisoned-underscore-proto.js    Uncaught exception: Expected SameValue(«undefined», «[object Function]») to be t
language/expressions/tagged-template/cache-eval-inner-function.js    Uncaught exception: Expected SameValue(«,,», «,,») to be false
language/expressions/tagged-template/call-expression-context-no-strict.js    Uncaught exception: Expected SameValue(«undefined», «[object Object]») to be tru
language/expressions/tagged-template/invalid-escape-sequences.js    Uncaught exception: Cooked template value should be undefined for illegal escape
language/expressions/tagged-template/template-object.js    Uncaught exception: 0 descriptor should not be configurable
language/expressions/typeof/get-value-ref-err.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/expressions/unary-plus/bigint-throws.js    Uncaught exception: +0n throws TypeError Expected a TypeError to be thrown but n
language/expressions/unsigned-right-shift/S11.7.3_A5.2_T1.js    (no output)
language/expressions/unsigned-right-shift/bigint-and-number.js    Uncaught exception: Object(1n) >>> 1 throws TypeError Expected a TypeError to be
language/expressions/yield/formal-parameters-after-reassignment-non-strict.js    Uncaught exception: First result `value` Expected SameValue(«3.193514870012e-311
language/expressions/yield/star-in-rltn-expr.js    TypeError: is not iterable
language/expressions/yield/star-iterable.js    Uncaught exception: First result `done` flag Expected SameValue(«false», «undefi
language/expressions/yield/star-return-is-null.js    Uncaught exception: Expected SameValue(«0», «1») to be true
language/expressions/yield/star-rhs-iter-nrml-next-call-non-obj.js    Uncaught exception: Expected SameValue(«false», «true») to be true
language/expressions/yield/star-rhs-iter-nrml-res-done-no-value.js    Uncaught exception: access count (first iteration) Expected SameValue(«1», «0») 
language/expressions/yield/star-rhs-iter-rtrn-no-rtrn.js    Uncaught exception: `return` property access Expected SameValue(«0», «1») to be 
language/expressions/yield/star-rhs-iter-rtrn-res-done-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-rtrn-res-done-no-value.js    Uncaught exception: delegation ongoing (second iteration) Expected SameValue(«tr
language/expressions/yield/star-rhs-iter-rtrn-res-value-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-rtrn-res-value-final.js    Uncaught exception: Expected SameValue(«undefined», «2222») to be true
language/expressions/yield/star-rhs-iter-rtrn-rtrn-call-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-rtrn-rtrn-call-non-obj.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/yield/star-rhs-iter-rtrn-rtrn-get-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-rtrn-rtrn-invoke.js    Uncaught exception: Expected SameValue(«0», «1») to be true
language/expressions/yield/star-rhs-iter-thrw-res-done-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-thrw-res-done-no-value.js    Uncaught exception: undefined
language/expressions/yield/star-rhs-iter-thrw-res-value-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-thrw-res-value-final.js    Uncaught exception: 2222
language/expressions/yield/star-rhs-iter-thrw-thrw-call-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-thrw-thrw-call-non-obj.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/yield/star-rhs-iter-thrw-thrw-get-err.js    Uncaught exception: Expected SameValue(«undefined», «Test262Error: ») to be true
language/expressions/yield/star-rhs-iter-thrw-thrw-invoke.js    Uncaught exception: 7777
language/expressions/yield/star-rhs-iter-thrw-violation-no-rtrn.js    Uncaught exception: `throw` property access Expected SameValue(«0», «1») to be t
language/expressions/yield/star-rhs-iter-thrw-violation-rtrn-call-err.js    Uncaught exception: Expected SameValue(«undefined», «87») to be true
language/expressions/yield/star-rhs-iter-thrw-violation-rtrn-call-non-obj.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/expressions/yield/star-rhs-iter-thrw-violation-rtrn-get-err.js    Uncaught exception: Expected SameValue(«0», «1») to be true
language/expressions/yield/star-rhs-iter-thrw-violation-rtrn-invoke.js    Uncaught exception: Expected SameValue(«0», «1») to be true
language/expressions/yield/star-throw-is-null.js    Uncaught exception: Thrown value was not an object!
language/global-code/S10.4.1_A1_T1.js    Uncaught exception: #1: variable x is a property of global object
language/global-code/decl-func.js    Uncaught exception: brandNew descriptor should not be configurable
language/global-code/decl-lex-restricted-global.js    Perry ran clean; Node rejected (missed negative)
language/global-code/decl-lex.js    Uncaught exception: `class` binding is mutable Expected SameValue(«1», «5») to b
language/global-code/decl-var.js    Uncaught exception: brandNew should be an own property
language/identifier-resolution/assign-to-global-undefined.js    ReferenceError: undeclared is not defined
language/literals/numeric/7.8.3-3gs.js    Uncaught exception: Expected a SyntaxError to be thrown but no exception was thr
language/literals/regexp/S7.8.5_A1.3_T5.js    Uncaught exception: #1.2: RegularExpressionFirstChar :: Line separator is incorr
language/literals/regexp/S7.8.5_A1.3_T6.js    Uncaught exception: #1.2: RegularExpressionFirstChar :: Paragraph separator is i
language/literals/regexp/S7.8.5_A1.5_T5.js    Uncaught exception: #1.2: RegularExpressionFirstChar :: BackslashSequence :: \Li
language/literals/regexp/S7.8.5_A1.5_T6.js    Uncaught exception: #1.2: RegularExpressionFirstChar :: BackslashSequence :: \Pa
language/literals/regexp/S7.8.5_A2.3_T5.js    Uncaught exception: #1.2: RegularExpressionChar :: Line separator is incorrect. 
language/literals/regexp/S7.8.5_A2.3_T6.js    Uncaught exception: #1.2: RegularExpressionChar :: Paragraph separator is incorr
language/literals/regexp/S7.8.5_A2.5_T5.js    Uncaught exception: #1.2: RegularExpressionChar :: BackslashSequence :: \Line se
language/literals/regexp/S7.8.5_A2.5_T6.js    Uncaught exception: #1.2: RegularExpressionChar :: BackslashSequence :: \Paragra
language/literals/regexp/u-astral-char-class-invert.js    Uncaught exception: Expected SameValue(«🧡», «null») to be true
language/literals/regexp/u-astral.js    Uncaught exception: quantifier application
language/literals/regexp/u-case-mapping.js    Uncaught exception: Case mapping is not applied in the absence of the `u` flag E
language/literals/regexp/u-null-character-escape.js    Uncaught exception: Expected SameValue(«undefined», «"\u0000②"») to be true
language/literals/regexp/y-assertion-start.js    Uncaught exception: negative: within a line (without `m`) Expected SameValue(«tr
language/reserved-words/unreserved-words.js    TypeError: Cannot set properties of null or undefined (setting '_isSameValue')
language/statements/async-function/evaluation-body.js    Perry ran clean; Node rejected (missed negative)
language/statements/async-generator/return-undefined-implicit-and-explicit.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [tick 1, g1 ret, g2 
language/statements/async-generator/yield-star-normal-notdone-iter-value-throws.js    Test262:AsyncTestFailure:Test262Error: [object Object]
language/statements/async-generator/yield-star-return-notdone-iter-value-throws.js    Test262:AsyncTestFailure:Test262Error: [object Object]
language/statements/async-generator/yield-star-return-then-getter-ticks.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [start, tick 1, get 
language/statements/async-generator/yield-star-sync-next.js    Test262:AsyncTestFailure:Test262Error: Test262Error: get [Symbol.iterator] thisV
language/statements/async-generator/yield-star-throw-notdone-iter-value-throws.js    Test262:AsyncTestFailure:Test262Error: [object Object]
language/statements/break/S12.8_A7.js    Parse warning: Error { error: (1..13, TS1116) }
language/statements/const/fn-name-class.js    Uncaught exception: Expected SameValue(«"xCls"», «"xCls"») to be false
language/statements/const/function-local-closure-get-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/const/global-closure-get-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/const/global-use-before-initialization-in-declaration-statement.js    Perry ran clean; Node rejected (missed negative)
language/statements/const/global-use-before-initialization-in-prior-statement.js    Perry ran clean; Node rejected (missed negative)
language/statements/const/syntax/const-invalid-assignment-next-expression-for.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/statements/const/syntax/const-invalid-assignment-statement-body-for-in.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/statements/const/syntax/const-invalid-assignment-statement-body-for-of.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/statements/continue/S12.7_A7.js    Parse warning: Error { error: (1..16, TS1115) }
language/statements/for-await-of/async-from-sync-iterator-continuation-abrupt-completion-get-constructor.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [start, tick 1, tick
language/statements/for-await-of/head-lhs-async.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«undefin
language/statements/for-await-of/iterator-close-throw-get-method-abrupt.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Expected SameValue(«[object
language/statements/for-await-of/ticks-with-async-iter-resolved-promise-and-constructor-lookup-two.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [pre, tick 1, loop, 
language/statements/for-await-of/ticks-with-sync-iter-resolved-promise-and-constructor-lookup.js    Test262:AsyncTestFailure:Test262Error: Test262Error: Actual [pre, tick 1, tick 2
language/statements/for-in/S12.6.4_A7_T2.js    Uncaught exception: Unexpected value: 'aa1baundefinedca3'
language/statements/for-in/head-const-bound-names-fordecl-tdz.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-in/head-let-bound-names-fordecl-tdz.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-in/head-lhs-let.js    Uncaught exception: MemberExpression Expected SameValue(«undefined», «"key"») to
language/statements/for-in/order-after-define-property.js    Uncaught exception: Actual [b, a] and expected [a, b] should have the same conte
language/statements/for-in/scope-body-lex-open.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-in/scope-head-lex-close.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-in/scope-head-lex-open.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/arguments-mapped-aliasing.js    Uncaught exception: argument at index 1 Expected SameValue(«2», «3») to be true
language/statements/for-of/arguments-mapped-mutation.js    Uncaught exception: argument at index 1 Expected SameValue(«2», «4») to be true
language/statements/for-of/arguments-unmapped-mutation.js    Uncaught exception: argument at index 1 Expected SameValue(«2», «4») to be true
language/statements/for-of/body-dstr-assign-error.js    Uncaught exception: Iterator is closed Expected SameValue(«0», «1») to be true
language/statements/for-of/body-put-error.js    Uncaught exception: Iterator is closed Expected SameValue(«0», «1») to be true
language/statements/for-of/head-const-bound-names-fordecl-tdz.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/head-let-bound-names-fordecl-tdz.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/iterator-next-reference.js    Uncaught exception: Should not access the `next` method after the iteration prol
language/statements/for-of/map-contract.js    Uncaught exception: Expected SameValue(«1», «0») to be true
language/statements/for-of/map-expand.js    Uncaught exception: Expected SameValue(«1», «2») to be true
language/statements/for-of/scope-body-lex-open.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/scope-head-lex-close.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/scope-head-lex-open.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/for-of/string-astral.js    Uncaught exception: Expected SameValue(«"\ud801"», «"𐐨"») to be true
language/statements/for/scope-body-lex-open.js    ReferenceError: x is not defined
language/statements/for/scope-body-var-none.js    SyntaxError: Identifier 'x' has already been declared
language/statements/for/scope-head-lex-open.js    Uncaught exception: reference from LexicalDeclaration Expected SameValue(«"outsi
language/statements/for/scope-head-var-none.js    SyntaxError: Identifier 'x' has already been declared
language/statements/function/13.0-14-s.js    Uncaught exception: Expected a SyntaxError but got a ReferenceError
language/statements/function/S13.2.1_A6_T3.js    TypeError: value is not a function
language/statements/function/S13.2.2_A14.js    Uncaught exception: #1: var obj = new FACTORY() does not lead to throwing except
language/statements/function/S13.2.2_A17_T2.js    Uncaught exception: #3: __obj.p1 === "w1". Actual: __obj.p1 ===undefined
language/statements/function/S13.2.2_A17_T3.js    Uncaught exception: #3: __obj.p1 === "w1". Actual: __obj.p1 ===undefined
language/statements/function/S13.2.2_A18_T1.js    Uncaught exception: #3: result.callee === 1. Actual: result.callee ===undefined
language/statements/function/S13.2.2_A18_T2.js    ReferenceError: arguments is not defined
language/statements/function/S13.2.2_A19_T7.js    Uncaught exception: #2: this.hasOwnProperty('__func') === true
language/statements/function/S13.2.2_A1_T1.js    Uncaught exception: #1: __PROTO.isPrototypeOf(__monster) must be true
language/statements/function/S13.2.2_A1_T2.js    Uncaught exception: #1: __PROTO.isPrototypeOf(__monster) must be true
language/statements/function/S13_A19_T1.js    Uncaught exception: #1: typeof __decl === "function". Actual: typeof __decl ===u
language/statements/generators/arguments-with-arguments-fn.js    Uncaught exception: Expected SameValue(«"undefined"», «"object"») to be true
language/statements/generators/default-proto.js    Uncaught exception: Expected SameValue(«[object Generator]», «[object Generator]
language/statements/generators/has-instance.js    Uncaught exception: Instance created via function invocation
language/statements/generators/invoke-as-constructor.js    Uncaught exception: Expected a TypeError to be thrown but no exception was throw
language/statements/generators/prototype-property-descriptor.js    TypeError: Cannot read properties of undefined (reading 'enumerable')
language/statements/generators/prototype-relation-to-function.js    Uncaught exception: Expected SameValue(«[object Object]», «[object Function]») t
language/statements/labeled/value-await-non-module-escaped.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7342..7343, TS
language/statements/labeled/value-await-non-module.js    Error: Failed to parse <staged-case> Parse error: Error { error: (7266..7267, TS
language/statements/let/block-local-closure-set-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/let/fn-name-class.js    Uncaught exception: Expected SameValue(«"xCls"», «"xCls"») to be false
language/statements/let/function-local-closure-get-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/let/function-local-closure-set-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/let/global-closure-get-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/let/global-closure-set-before-initialization.js    Uncaught exception: Expected a ReferenceError to be thrown but no exception was 
language/statements/let/global-use-before-initialization-in-declaration-statement.js    Perry ran clean; Node rejected (missed negative)
language/statements/let/global-use-before-initialization-in-prior-statement.js    Perry ran clean; Node rejected (missed negative)
language/statements/let/syntax/let-closure-inside-initialization.js    ReferenceError: i is not defined
language/statements/let/syntax/let-closure-inside-next-expression.js    Uncaught exception: Expected SameValue(«1», «0») to be true
language/statements/let/syntax/let-iteration-variable-is-freshly-allocated-for-each-iteration-multi-let-binding.js    Uncaught exception: Expected SameValue(«10», «15») to be true
language/statements/switch/scope-lex-async-function.js    Perry ran clean; Node rejected (missed negative)
language/statements/switch/scope-lex-async-generator.js    Perry ran clean; Node rejected (missed negative)
language/statements/switch/scope-lex-class.js    Perry ran clean; Node rejected (missed negative)
language/statements/switch/scope-lex-generator.js    Perry ran clean; Node rejected (missed negative)
language/statements/switch/scope-lex-open-case.js    Uncaught exception: reference from "selector" Expression Expected SameValue(«"ou
language/statements/switch/scope-lex-open-dflt.js    Uncaught exception: Expected SameValue(«"outside"», «"inside"») to be true
language/statements/try/completion-values-fn-finally-abrupt.js    Uncaught exception: 2: fiinally count Expected SameValue(«2», «1») to be true
language/statements/try/completion-values.js    Uncaught exception: Expected SameValue(«39», «42») to be true
language/statements/try/scope-catch-block-lex-open.js    Uncaught exception: Expected SameValue(«"outside"», «"inside"») to be true
language/statements/variable/12.2.1-22-s.js    Uncaught exception: Expected a SyntaxError to be thrown but no exception was thr
language/statements/variable/S12.2_A11.js    Uncaught exception: #2: __declared__var === "baloon". Actual:  __declared__var =
language/statements/variable/S12.2_A2.js    Uncaught exception: #1: delete(__variable)===false
language/statements/variable/S12.2_A9.js    Uncaught exception: #1: When using property attributes, {DontEnum} not used
language/statements/variable/fn-name-class.js    Uncaught exception: Expected SameValue(«"xCls"», «"xCls"») to be false
language/statements/with/S12.10_A5_T5.js    Uncaught exception: #1: x === 1. Actual:  x ===undefined
language/statements/with/has-binding-call-with-proxy-env.js    Uncaught exception: Actual [] and expected [has:Object] should have the same con
language/statements/with/set-mutable-binding-binding-deleted-with-typed-array-in-proto-chain-strict-mode.js    Perry ran clean; Node rejected (missed negative)
language/types/object/S8.6.2_A5_T3.js    TypeError: knock is not a function
language/types/reference/8.7.2-1-s.js    Error compiling module 'case.js' (<staged-case> with --backend llvm: clang -c fa
language/types/reference/S8.7.1_A2.js    Uncaught exception: #1: y = 1; (delete y) === false. Actual: true
language/types/reference/S8.7_A5_T1.js    Uncaught exception: #3: obj = new Object(); var __ref = obj; delete __ref === fa
language/types/reference/S8.7_A5_T2.js    Uncaught exception: #4: obj = new Object(); __ref = obj; delete __ref; typeof(__
language/types/reference/get-value-prop-base-primitive.js    Uncaught exception: Expected SameValue(«undefined», «"string prototype"») to be 
language/types/reference/put-value-prop-base-primitive.js    TypeError: Cannot convert undefined or null to object

Workflow

Measure a subtree: scripts/test262_subset.py --root vendor/test262 --dir <area> --jobs 8. Code-only PR per subcluster (no version bump/CHANGELOG/CLAUDE.md); verify zero-regression; cargo fmt --all -- --check + bash scripts/check_file_size.sh must pass; reference this issue. Never reference internal infrastructure hostnames.