Attachment 340252 Details for Bug 185578 – Patch

[patch] Patch

bug-185578-20180512105556.patch (text/plain), 55.69 KB, created by Andy VanWagoner on 2018-05-12 09:55:57 PDT

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Creator: Andy VanWagoner

Created: 2018-05-12 09:55:57 PDT

Size: 55.69 KB

patch

obsolete

>Subversion Revision: 231723
>diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
>index 9455e15dff20834fa5b301dbfe730092b79b88c4..b7c85e6fe717e6f75cc232d7d89e539e9e3994d3 100644
>--- a/Source/JavaScriptCore/ChangeLog
>+++ b/Source/JavaScriptCore/ChangeLog
>@@ -1,3 +1,43 @@
>+2018-05-11  Andy VanWagoner  <andy@vanwagoner.family>
>+
>+        [INTL] Improve spec & test262 compliance for Intl APIs
>+        https://bugs.webkit.org/show_bug.cgi?id=185578
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Use putDirectIndex over push for lists to arrays.
>+        Update default options to construct with a null prototype.
>+        Define constructor and toStringTag on prototypes.
>+        Add proper time clipping.
>+        Remove some outdated comment spec text, use url instead.
>+
>+        * runtime/IntlCollator.cpp:
>+        (JSC::IntlCollator::initializeCollator):
>+        * runtime/IntlCollatorConstructor.cpp:
>+        (JSC::IntlCollatorConstructor::finishCreation):
>+        * runtime/IntlCollatorPrototype.cpp:
>+        (JSC::IntlCollatorPrototype::finishCreation):
>+        * runtime/IntlDateTimeFormatConstructor.cpp:
>+        (JSC::IntlDateTimeFormatConstructor::finishCreation):
>+        * runtime/IntlDateTimeFormatPrototype.cpp:
>+        (JSC::IntlDateTimeFormatPrototype::finishCreation):
>+        (JSC::IntlDateTimeFormatFuncFormatDateTime):
>+        (JSC::IntlDateTimeFormatPrototypeFuncFormatToParts):
>+        * runtime/IntlNumberFormat.cpp:
>+        (JSC::IntlNumberFormat::initializeNumberFormat):
>+        * runtime/IntlNumberFormatConstructor.cpp:
>+        (JSC::IntlNumberFormatConstructor::finishCreation):
>+        * runtime/IntlNumberFormatPrototype.cpp:
>+        (JSC::IntlNumberFormatPrototype::finishCreation):
>+        * runtime/IntlObject.cpp:
>+        (JSC::lookupSupportedLocales):
>+        (JSC::supportedLocales):
>+        (JSC::intlObjectFuncGetCanonicalLocales):
>+        * runtime/IntlPluralRules.cpp:
>+        (JSC::IntlPluralRules::resolvedOptions):
>+        * runtime/IntlPluralRulesConstructor.cpp:
>+        (JSC::IntlPluralRulesConstructor::finishCreation):
>+
> 2018-05-11  Commit Queue  <commit-queue@webkit.org>
> 
>         Unreviewed, rolling out r231316 and r231332.
>diff --git a/Source/JavaScriptCore/runtime/IntlCollator.cpp b/Source/JavaScriptCore/runtime/IntlCollator.cpp
>index 7208b2d6888aceb05c4959900bb910abe87a9fcb..f7350862fbf7bebecac38e2294499bdbabdf7124 100644
>--- a/Source/JavaScriptCore/runtime/IntlCollator.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlCollator.cpp
>@@ -178,32 +178,22 @@ void IntlCollator::initializeCollator(ExecState& state, JSValue locales, JSValue
>     VM& vm = state.vm();
>     auto scope = DECLARE_THROW_SCOPE(vm);
> 
>-    // 10.1.1 InitializeCollator (collator, locales, options) (ECMA-402 2.0)
>-    // 1. If collator has an [[initializedIntlObject]] internal slot with value true, throw a TypeError exception.
>-    // 2. Set collator.[[initializedIntlObject]] to true.
>+    // 10.1.1 InitializeCollator (collator, locales, options) (ECMA-402)
>+    // https://tc39.github.io/ecma402/#sec-initializecollator
> 
>-    // 3. Let requestedLocales be CanonicalizeLocaleList(locales).
>     auto requestedLocales = canonicalizeLocaleList(state, locales);
>-    // 4. ReturnIfAbrupt(requestedLocales).
>     RETURN_IF_EXCEPTION(scope, void());
> 
>-    // 5. If options is undefined, then
>     JSObject* options;
>-    if (optionsValue.isUndefined()) {
>-        // a. Let options be ObjectCreate(%ObjectPrototype%).
>-        options = constructEmptyObject(&state);
>-    } else { // 6. Else
>-        // a. Let options be ToObject(options).
>+    if (optionsValue.isUndefined())
>+        options = constructEmptyObject(&state, state.lexicalGlobalObject()->nullPrototypeObjectStructure());
>+    else {
>         options = optionsValue.toObject(&state);
>-        // b. ReturnIfAbrupt(options).
>         RETURN_IF_EXCEPTION(scope, void());
>     }
> 
>-    // 7. Let u be GetOption(options, "usage", "string", Â«"sort", "search"Â», "sort").
>     String usageString = intlStringOption(state, options, vm.propertyNames->usage, { "sort", "search" }, "usage must be either \"sort\" or \"search\"", "sort");
>-    // 8. ReturnIfAbrupt(u).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 9. Set collator.[[usage]] to u.
>     if (usageString == "sort")
>         m_usage = Usage::Sort;
>     else if (usageString == "search")
>@@ -211,37 +201,14 @@ void IntlCollator::initializeCollator(ExecState& state, JSValue locales, JSValue
>     else
>         ASSERT_NOT_REACHED();
> 
>-    // 10. If u is "sort", then
>-    // a. Let localeData be the value of %Collator%.[[sortLocaleData]];
>-    // 11. Else
>-    // a. Let localeData be the value of %Collator%.[[searchLocaleData]].
>-    Vector<String> (*localeData)(const String&, size_t);
>-    if (m_usage == Usage::Sort)
>-        localeData = sortLocaleData;
>-    else
>-        localeData = searchLocaleData;
>+    auto localeData = (m_usage == Usage::Sort) ? sortLocaleData : searchLocaleData;
> 
>-    // 12. Let opt be a new Record.
>     HashMap<String, String> opt;
> 
>-    // 13. Let matcher be GetOption(options, "localeMatcher", "string", Â«"lookup", "best fit"Â», "best fit").
>     String matcher = intlStringOption(state, options, vm.propertyNames->localeMatcher, { "lookup", "best fit" }, "localeMatcher must be either \"lookup\" or \"best fit\"", "best fit");
>-    // 14. ReturnIfAbrupt(matcher).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 15. Set opt.[[localeMatcher]] to matcher.
>     opt.add(ASCIILiteral("localeMatcher"), matcher);
> 
>-    // 16. For each row in Table 1, except the header row, do:
>-    // a. Let key be the name given in the Key column of the row.
>-    // b. Let prop be the name given in the Property column of the row.
>-    // c. Let type be the string given in the Type column of the row.
>-    // d. Let list be a List containing the Strings given in the Values column of the row, or undefined if no strings are given.
>-    // e. Let value be GetOption(options, prop, type, list, undefined).
>-    // f. ReturnIfAbrupt(value).
>-    // g. If the string given in the Type column of the row is "boolean" and value is not undefined, then
>-    //    i. Let value be ToString(value).
>-    //    ii. ReturnIfAbrupt(value).
>-    // h. Set opt.[[<key>]] to value.
>     {
>         String numericString;
>         bool usesFallback;
>@@ -257,35 +224,15 @@ void IntlCollator::initializeCollator(ExecState& state, JSValue locales, JSValue
>         opt.add(ASCIILiteral("kf"), caseFirst);
>     }
> 
>-    // 17. Let relevantExtensionKeys be the value of %Collator%.[[relevantExtensionKeys]].
>-    // 18. Let r be ResolveLocale(%Collator%.[[availableLocales]], requestedLocales, opt, relevantExtensionKeys, localeData).
>     auto& availableLocales = state.jsCallee()->globalObject()->intlCollatorAvailableLocales();
>     auto result = resolveLocale(state, availableLocales, requestedLocales, opt, relevantCollatorExtensionKeys, WTF_ARRAY_LENGTH(relevantCollatorExtensionKeys), localeData);
> 
>-    // 19. Set collator.[[locale]] to the value of r.[[locale]].
>     m_locale = result.get(ASCIILiteral("locale"));
>     if (m_locale.isEmpty()) {
>         throwTypeError(&state, scope, ASCIILiteral("failed to initialize Collator due to invalid locale"));
>         return;
>     }
> 
>-    // 20. Let k be 0.
>-    // 21. Let lenValue be Get(relevantExtensionKeys, "length").
>-    // 22. Let len be ToLength(lenValue).
>-    // 23. Repeat while k < len:
>-    // a. Let Pk be ToString(k).
>-    // b. Let key be Get(relevantExtensionKeys, Pk).
>-    // c. ReturnIfAbrupt(key).
>-    // d. If key is "co", then
>-    //    i. Let property be "collation".
>-    //    ii. Let value be the value of r.[[co]].
>-    //    iii. If value is null, let value be "default".
>-    // e. Else use the row of Table 1 that contains the value of key in the Key column:
>-    //    i. Let property be the name given in the Property column of the row.
>-    //    ii. Let value be the value of r.[[<key>]].
>-    //    iii. If the name given in the Type column of the row is "boolean", let value be the result of comparing value with "true".
>-    // f. Set collator.[[<property>]] to value.
>-    // g. Increase k by 1.
>     const String& collation = result.get(ASCIILiteral("co"));
>     m_collation = collation.isNull() ? ASCIILiteral("default") : collation;
>     m_numeric = result.get(ASCIILiteral("kn")) == "true";
>@@ -298,18 +245,8 @@ void IntlCollator::initializeCollator(ExecState& state, JSValue locales, JSValue
>     else
>         m_caseFirst = CaseFirst::False;
> 
>-    // 24. Let s be GetOption(options, "sensitivity", "string", Â«"base", "accent", "case", "variant"Â», undefined).
>     String sensitivityString = intlStringOption(state, options, vm.propertyNames->sensitivity, { "base", "accent", "case", "variant" }, "sensitivity must be either \"base\", \"accent\", \"case\", or \"variant\"", nullptr);
>-    // 25. ReturnIfAbrupt(s).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 26. If s is undefined, then
>-    // a. If u is "sort", then let s be "variant".
>-    // b. Else
>-    //    i. Let dataLocale be the value of r.[[dataLocale]].
>-    //    ii. Let dataLocaleData be Get(localeData, dataLocale).
>-    //    iii. Let s be Get(dataLocaleData, "sensitivity").
>-    //    10.2.3 "[[searchLocaleData]][locale] must have a sensitivity property with a String value equal to "base", "accent", "case", or "variant" for all locale values."
>-    // 27. Set collator.[[sensitivity]] to s.
>     if (sensitivityString == "base")
>         m_sensitivity = Sensitivity::Base;
>     else if (sensitivityString == "accent")
>@@ -319,21 +256,14 @@ void IntlCollator::initializeCollator(ExecState& state, JSValue locales, JSValue
>     else
>         m_sensitivity = Sensitivity::Variant;
> 
>-    // 28. Let ip be GetOption(options, "ignorePunctuation", "boolean", undefined, false).
>     bool usesFallback;
>     bool ignorePunctuation = intlBooleanOption(state, options, vm.propertyNames->ignorePunctuation, usesFallback);
>     if (usesFallback)
>         ignorePunctuation = false;
>-    // 29. ReturnIfAbrupt(ip).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 30. Set collator.[[ignorePunctuation]] to ip.
>     m_ignorePunctuation = ignorePunctuation;
> 
>-    // 31. Set collator.[[boundCompare]] to undefined.
>-    // 32. Set collator.[[initializedCollator]] to true.
>     m_initializedCollator = true;
>-
>-    // 33. Return collator.
> }
> 
> void IntlCollator::createCollator(ExecState& state)
>diff --git a/Source/JavaScriptCore/runtime/IntlCollatorConstructor.cpp b/Source/JavaScriptCore/runtime/IntlCollatorConstructor.cpp
>index 78f189f98b49d9a2fe51ce27b2255951dd09460f..86ae3f0908fca8eac0862e4c71b9ba040a93e31d 100644
>--- a/Source/JavaScriptCore/runtime/IntlCollatorConstructor.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlCollatorConstructor.cpp
>@@ -82,6 +82,7 @@ void IntlCollatorConstructor::finishCreation(VM& vm, IntlCollatorPrototype* coll
>     Base::finishCreation(vm, ASCIILiteral("Collator"));
>     putDirectWithoutTransition(vm, vm.propertyNames->prototype, collatorPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
>     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
>+    collatorPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, this, static_cast<unsigned>(PropertyAttribute::DontEnum));
>     m_collatorStructure.set(vm, this, collatorStructure);
> }
> 
>diff --git a/Source/JavaScriptCore/runtime/IntlCollatorPrototype.cpp b/Source/JavaScriptCore/runtime/IntlCollatorPrototype.cpp
>index ad59c8e4f20baa129c70a494185c6f4f55383e7b..bf47529d8a8b7ca3be49d03bb222ae56c2dcee63 100644
>--- a/Source/JavaScriptCore/runtime/IntlCollatorPrototype.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlCollatorPrototype.cpp
>@@ -74,6 +74,8 @@ IntlCollatorPrototype::IntlCollatorPrototype(VM& vm, Structure* structure)
> void IntlCollatorPrototype::finishCreation(VM& vm)
> {
>     Base::finishCreation(vm);
>+
>+    putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "Object"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
> }
> 
> static EncodedJSValue JSC_HOST_CALL IntlCollatorFuncCompare(ExecState* state)
>diff --git a/Source/JavaScriptCore/runtime/IntlDateTimeFormatConstructor.cpp b/Source/JavaScriptCore/runtime/IntlDateTimeFormatConstructor.cpp
>index 2919ece15c511e09781b1d1062f0385bd6e1f818..5351e43dcdadde2b5cfac5d29f7c6627405cf2c1 100644
>--- a/Source/JavaScriptCore/runtime/IntlDateTimeFormatConstructor.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlDateTimeFormatConstructor.cpp
>@@ -82,6 +82,7 @@ void IntlDateTimeFormatConstructor::finishCreation(VM& vm, IntlDateTimeFormatPro
>     Base::finishCreation(vm, ASCIILiteral("DateTimeFormat"));
>     putDirectWithoutTransition(vm, vm.propertyNames->prototype, dateTimeFormatPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
>     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
>+    dateTimeFormatPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, this, static_cast<unsigned>(PropertyAttribute::DontEnum));
>     m_dateTimeFormatStructure.set(vm, this, dateTimeFormatStructure);
> }
> 
>diff --git a/Source/JavaScriptCore/runtime/IntlDateTimeFormatPrototype.cpp b/Source/JavaScriptCore/runtime/IntlDateTimeFormatPrototype.cpp
>index 4724b2be192b02852f883483e2d349be96752101..9b7971add198dd0bfb23a6bcc07f03cc96dd4931 100644
>--- a/Source/JavaScriptCore/runtime/IntlDateTimeFormatPrototype.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlDateTimeFormatPrototype.cpp
>@@ -37,6 +37,7 @@
> #include "JSBoundFunction.h"
> #include "JSCInlines.h"
> #include "JSObjectInlines.h"
>+#include <wtf/DateMath.h>
> 
> namespace JSC {
> 
>@@ -87,33 +88,29 @@ void IntlDateTimeFormatPrototype::finishCreation(VM& vm, JSGlobalObject* globalO
> #else
>     UNUSED_PARAM(globalObject);
> #endif
>+
>+    putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "Object"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
> }
> 
> static EncodedJSValue JSC_HOST_CALL IntlDateTimeFormatFuncFormatDateTime(ExecState* state)
> {
>     VM& vm = state->vm();
>     auto scope = DECLARE_THROW_SCOPE(vm);
>-    // 12.3.4 DateTime Format Functions (ECMA-402 2.0)
>-    // 1. Let dtf be the this value.
>-    // 2. Assert: Type(dtf) is Object and dtf has an [[initializedDateTimeFormat]] internal slot whose value is true.
>+    // 12.1.7 DateTime Format Functions (ECMA-402)
>+    // https://tc39.github.io/ecma402/#sec-formatdatetime
>+
>     IntlDateTimeFormat* format = jsCast<IntlDateTimeFormat*>(state->thisValue());
> 
>     JSValue date = state->argument(0);
>     double value;
> 
>-    // 3. If date is not provided or is undefined, then
>-    if (date.isUndefined()) {
>-        // a. Let x be %Date_now%().
>+    if (date.isUndefined())
>         value = JSValue::decode(dateNow(state)).toNumber(state);
>-    } else {
>-        // 4. Else
>-        // a. Let x be ToNumber(date).
>-        value = date.toNumber(state);
>-        // b. ReturnIfAbrupt(x).
>+    else {
>+        value = WTF::timeClip(date.toNumber(state));
>         RETURN_IF_EXCEPTION(scope, encodedJSValue());
>     }
> 
>-    // 5. Return FormatDateTime(dtf, x).
>     scope.release();
>     return JSValue::encode(format->format(*state, value));
> }
>@@ -175,7 +172,7 @@ EncodedJSValue JSC_HOST_CALL IntlDateTimeFormatPrototypeFuncFormatToParts(ExecSt
>     if (date.isUndefined())
>         value = JSValue::decode(dateNow(state)).toNumber(state);
>     else {
>-        value = date.toNumber(state);
>+        value = WTF::timeClip(date.toNumber(state));
>         RETURN_IF_EXCEPTION(scope, encodedJSValue());
>     }
> 
>diff --git a/Source/JavaScriptCore/runtime/IntlNumberFormat.cpp b/Source/JavaScriptCore/runtime/IntlNumberFormat.cpp
>index 185ac368d17330fffa587c6612dfbdd219ffcba0..b18fd0ff26631ede344bcaed21d4fea1e37b7127 100644
>--- a/Source/JavaScriptCore/runtime/IntlNumberFormat.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlNumberFormat.cpp
>@@ -157,62 +157,42 @@ static unsigned computeCurrencyDigits(const String& currency)
> 
> void IntlNumberFormat::initializeNumberFormat(ExecState& state, JSValue locales, JSValue optionsValue)
> {
>-    // 11.1.1 InitializeNumberFormat (numberFormat, locales, options) (ECMA-402 2.0)
>     VM& vm = state.vm();
>     auto scope = DECLARE_THROW_SCOPE(vm);
> 
>-    // 1. If numberFormat has an [[initializedIntlObject]] internal slot with value true, throw a TypeError exception.
>-    // 2. Set numberFormat.[[initializedIntlObject]] to true.
>+    // 11.1.2 InitializeNumberFormat (numberFormat, locales, options) (ECMA-402)
>+    // https://tc39.github.io/ecma402/#sec-initializenumberformat
> 
>-    // 3. Let requestedLocales be CanonicalizeLocaleList(locales).
>     auto requestedLocales = canonicalizeLocaleList(state, locales);
>-    // 4. ReturnIfAbrupt(requestedLocales).
>     RETURN_IF_EXCEPTION(scope, void());
> 
>-    // 5. If options is undefined, then
>     JSObject* options;
>-    if (optionsValue.isUndefined()) {
>-        // a. Let options be ObjectCreate(%ObjectPrototype%).
>-        options = constructEmptyObject(&state);
>-    } else { // 6. Else
>-        // a. Let options be ToObject(options).
>+    if (optionsValue.isUndefined())
>+        options = constructEmptyObject(&state, state.lexicalGlobalObject()->nullPrototypeObjectStructure());
>+    else {
>         options = optionsValue.toObject(&state);
>-        // b. ReturnIfAbrupt(options).
>         RETURN_IF_EXCEPTION(scope, void());
>     }
> 
>-    // 7. Let opt be a new Record.
>     HashMap<String, String> opt;
> 
>-    // 8. Let matcher be GetOption(options, "localeMatcher", "string", Â«"lookup", "best fit"Â», "best fit").
>     String matcher = intlStringOption(state, options, vm.propertyNames->localeMatcher, { "lookup", "best fit" }, "localeMatcher must be either \"lookup\" or \"best fit\"", "best fit");
>-    // 9. ReturnIfAbrupt(matcher).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 10. Set opt.[[localeMatcher]] to matcher.
>     opt.add(ASCIILiteral("localeMatcher"), matcher);
> 
>-    // 11. Let localeData be %NumberFormat%.[[localeData]].
>-    // 12. Let r be ResolveLocale(%NumberFormat%.[[availableLocales]], requestedLocales, opt, %NumberFormat%.[[relevantExtensionKeys]], localeData).
>     auto& availableLocales = state.jsCallee()->globalObject()->intlNumberFormatAvailableLocales();
>     auto result = resolveLocale(state, availableLocales, requestedLocales, opt, relevantNumberExtensionKeys, WTF_ARRAY_LENGTH(relevantNumberExtensionKeys), IntlNFInternal::localeData);
> 
>-    // 13. Set numberFormat.[[locale]] to the value of r.[[locale]].
>     m_locale = result.get(ASCIILiteral("locale"));
>     if (m_locale.isEmpty()) {
>         throwTypeError(&state, scope, ASCIILiteral("failed to initialize NumberFormat due to invalid locale"));
>         return;
>     }
> 
>-    // 14. Set numberFormat.[[numberingSystem]] to the value of r.[[nu]].
>     m_numberingSystem = result.get(ASCIILiteral("nu"));
> 
>-    // 15. Let dataLocale be r.[[dataLocale]].
>-
>-    // 16. Let s be GetOption(options, "style", "string", Â« "decimal", "percent", "currency"Â», "decimal").
>     String styleString = intlStringOption(state, options, Identifier::fromString(&vm, "style"), { "decimal", "percent", "currency" }, "style must be either \"decimal\", \"percent\", or \"currency\"", "decimal");
>-    // 17. ReturnIfAbrupt(s).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 18. Set numberFormat.[[style]] to s.
>     if (styleString == "decimal")
>         m_style = Style::Decimal;
>     else if (styleString == "percent")
>@@ -222,13 +202,9 @@ void IntlNumberFormat::initializeNumberFormat(ExecState& state, JSValue locales,
>     else
>         ASSERT_NOT_REACHED();
> 
>-    // 19. Let c be GetOption(options, "currency", "string", undefined, undefined).
>     String currency = intlStringOption(state, options, Identifier::fromString(&vm, "currency"), { }, nullptr, nullptr);
>-    // 20. ReturnIfAbrupt(c).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 21. If c is not undefined, then
>     if (!currency.isNull()) {
>-        // a. If the result of IsWellFormedCurrencyCode(c), is false, then throw a RangeError exception.
>         if (currency.length() != 3 || !currency.isAllSpecialCharacters<isASCIIAlpha>()) {
>             throwException(&state, scope, createRangeError(&state, ASCIILiteral("currency is not a well-formed currency code")));
>             return;
>@@ -237,26 +213,18 @@ void IntlNumberFormat::initializeNumberFormat(ExecState& state, JSValue locales,
> 
>     unsigned currencyDigits = 0;
>     if (m_style == Style::Currency) {
>-        // 22. If s is "currency" and c is undefined, throw a TypeError exception.
>         if (currency.isNull()) {
>             throwTypeError(&state, scope, ASCIILiteral("currency must be a string"));
>             return;
>         }
> 
>-        // 23. If s is "currency", then
>-        // a. Let c be converting c to upper case as specified in 6.1.
>         currency = currency.convertToASCIIUppercase();
>-        // b. Set numberFormat.[[currency]] to c.
>         m_currency = currency;
>-        // c. Let cDigits be CurrencyDigits(c)
>         currencyDigits = computeCurrencyDigits(currency);
>     }
> 
>-    // 24. Let cd be GetOption(options, "currencyDisplay", "string", Â«"code", "symbol", "name"Â», "symbol").
>     String currencyDisplayString = intlStringOption(state, options, Identifier::fromString(&vm, "currencyDisplay"), { "code", "symbol", "name" }, "currencyDisplay must be either \"code\", \"symbol\", or \"name\"", "symbol");
>-    // 25. ReturnIfAbrupt(cd).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 26. If s is "currency", set numberFormat.[[currencyDisplay]] to cd.
>     if (m_style == Style::Currency) {
>         if (currencyDisplayString == "code")
>             m_currencyDisplay = CurrencyDisplay::Code;
>@@ -268,88 +236,51 @@ void IntlNumberFormat::initializeNumberFormat(ExecState& state, JSValue locales,
>             ASSERT_NOT_REACHED();
>     }
> 
>-    // 27. Let mnid be GetNumberOption(options, "minimumIntegerDigits", 1, 21, 1).
>-    // 28. ReturnIfAbrupt(mnid).
>-    // 29. Set numberFormat.[[minimumIntegerDigits]] to mnid.
>     unsigned minimumIntegerDigits = intlNumberOption(state, options, Identifier::fromString(&vm, "minimumIntegerDigits"), 1, 21, 1);
>     RETURN_IF_EXCEPTION(scope, void());
>     m_minimumIntegerDigits = minimumIntegerDigits;
> 
>-    // 30. If s is "currency", let mnfdDefault be cDigits; else let mnfdDefault be 0.
>     unsigned minimumFractionDigitsDefault = (m_style == Style::Currency) ? currencyDigits : 0;
> 
>-    // 31. Let mnfd be GetNumberOption(options, "minimumFractionDigits", 0, 20, mnfdDefault).
>-    // 32. ReturnIfAbrupt(mnfd).
>-    // 33. Set numberFormat.[[minimumFractionDigits]] to mnfd.
>     unsigned minimumFractionDigits = intlNumberOption(state, options, Identifier::fromString(&vm, "minimumFractionDigits"), 0, 20, minimumFractionDigitsDefault);
>     RETURN_IF_EXCEPTION(scope, void());
>     m_minimumFractionDigits = minimumFractionDigits;
> 
>-    // 34. If s is "currency", let mxfdDefault be max(mnfd, cDigits);
>     unsigned maximumFractionDigitsDefault;
>     if (m_style == Style::Currency)
>         maximumFractionDigitsDefault = std::max(minimumFractionDigits, currencyDigits);
>-    else if (m_style == Style::Percent) // else if s is "percent", let mxfdDefault be max(mnfd, 0);
>+    else if (m_style == Style::Percent)
>         maximumFractionDigitsDefault = minimumFractionDigits;
>-    else // else let mxfdDefault be max(mnfd, 3).
>+    else
>         maximumFractionDigitsDefault = std::max(minimumFractionDigits, 3u);
> 
>-    // 35. Let mxfd be GetNumberOption(options, "maximumFractionDigits", mnfd, 20, mxfdDefault).
>-    // 36. ReturnIfAbrupt(mxfd).
>-    // 37. Set numberFormat.[[maximumFractionDigits]] to mxfd.
>     unsigned maximumFractionDigits = intlNumberOption(state, options, Identifier::fromString(&vm, "maximumFractionDigits"), minimumFractionDigits, 20, maximumFractionDigitsDefault);
>     RETURN_IF_EXCEPTION(scope, void());
>     m_maximumFractionDigits = maximumFractionDigits;
> 
>-    // 38. Let mnsd be Get(options, "minimumSignificantDigits").
>     JSValue minimumSignificantDigitsValue = options->get(&state, Identifier::fromString(&vm, "minimumSignificantDigits"));
>-    // 39. ReturnIfAbrupt(mnsd).
>     RETURN_IF_EXCEPTION(scope, void());
> 
>-    // 40. Let mxsd be Get(options, "maximumSignificantDigits").
>     JSValue maximumSignificantDigitsValue = options->get(&state, Identifier::fromString(&vm, "maximumSignificantDigits"));
>-    // 41. ReturnIfAbrupt(mxsd).
>     RETURN_IF_EXCEPTION(scope, void());
> 
>-    // 42. If mnsd is not undefined or mxsd is not undefined, then
>     if (!minimumSignificantDigitsValue.isUndefined() || !maximumSignificantDigitsValue.isUndefined()) {
>-        // a. Let mnsd be GetNumberOption(options, "minimumSignificantDigits", 1, 21, 1).
>         unsigned minimumSignificantDigits = intlNumberOption(state, options, Identifier::fromString(&vm, "minimumSignificantDigits"), 1, 21, 1);
>-        // b. ReturnIfAbrupt(mnsd).
>         RETURN_IF_EXCEPTION(scope, void());
>-        // c. Let mxsd be GetNumberOption(options, "maximumSignificantDigits", mnsd, 21, 21).
>         unsigned maximumSignificantDigits = intlNumberOption(state, options, Identifier::fromString(&vm, "maximumSignificantDigits"), minimumSignificantDigits, 21, 21);
>-        // d. ReturnIfAbrupt(mxsd).
>         RETURN_IF_EXCEPTION(scope, void());
>-        // e. Set numberFormat.[[minimumSignificantDigits]] to mnsd.
>         m_minimumSignificantDigits = minimumSignificantDigits;
>-        // f. Set numberFormat.[[maximumSignificantDigits]] to mxsd.
>         m_maximumSignificantDigits = maximumSignificantDigits;
>     }
> 
>-    // 43. Let g be GetOption(options, "useGrouping", "boolean", undefined, true).
>     bool usesFallback;
>     bool useGrouping = intlBooleanOption(state, options, Identifier::fromString(&vm, "useGrouping"), usesFallback);
>     if (usesFallback)
>         useGrouping = true;
>-    // 44. ReturnIfAbrupt(g).
>     RETURN_IF_EXCEPTION(scope, void());
>-    // 45. Set numberFormat.[[useGrouping]] to g.
>     m_useGrouping = useGrouping;
> 
>-    // Steps 46 - 51 are not necessary to our implementation.
>-    // 46. Let dataLocaleData be Get(localeData, dataLocale).
>-    // 47. Let patterns be Get(dataLocaleData, "patterns").
>-    // 48. Assert: patterns is an object (see 11.2.3).
>-    // 49. Let stylePatterns be Get(patterns, s).
>-    // 50. Set numberFormat.[[positivePattern]] to Get(stylePatterns, "positivePattern").
>-    // 51. Set numberFormat.[[negativePattern]] to Get(stylePatterns, "negativePattern").
>-
>-    // 52. Set numberFormat.[[boundFormat]] to undefined.
>-    // 53. Set numberFormat.[[initializedNumberFormat]] to true.
>     m_initializedNumberFormat = true;
>-
>-    // 54. Return numberFormat.
> }
> 
> void IntlNumberFormat::createNumberFormat(ExecState& state)
>diff --git a/Source/JavaScriptCore/runtime/IntlNumberFormatConstructor.cpp b/Source/JavaScriptCore/runtime/IntlNumberFormatConstructor.cpp
>index 2b30503be36493dda8e7a70a12418dee4ad78d8b..274703c25b8584f9118171763fd5f68ef606ecca 100644
>--- a/Source/JavaScriptCore/runtime/IntlNumberFormatConstructor.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlNumberFormatConstructor.cpp
>@@ -82,6 +82,7 @@ void IntlNumberFormatConstructor::finishCreation(VM& vm, IntlNumberFormatPrototy
>     Base::finishCreation(vm, ASCIILiteral("NumberFormat"));
>     putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberFormatPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
>     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
>+    numberFormatPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, this, static_cast<unsigned>(PropertyAttribute::DontEnum));
>     m_numberFormatStructure.set(vm, this, numberFormatStructure);
> }
> 
>diff --git a/Source/JavaScriptCore/runtime/IntlNumberFormatPrototype.cpp b/Source/JavaScriptCore/runtime/IntlNumberFormatPrototype.cpp
>index 5cf177d647f850141d7c1b9373292a09089633b5..f8be6bca66f3d281897b44e14cf26cd2d1e61539 100644
>--- a/Source/JavaScriptCore/runtime/IntlNumberFormatPrototype.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlNumberFormatPrototype.cpp
>@@ -76,6 +76,8 @@ IntlNumberFormatPrototype::IntlNumberFormatPrototype(VM& vm, Structure* structur
> void IntlNumberFormatPrototype::finishCreation(VM& vm, Structure*)
> {
>     Base::finishCreation(vm);
>+
>+    putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "Object"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
> }
> 
> static EncodedJSValue JSC_HOST_CALL IntlNumberFormatFuncFormatNumber(ExecState* state)
>diff --git a/Source/JavaScriptCore/runtime/IntlObject.cpp b/Source/JavaScriptCore/runtime/IntlObject.cpp
>index 86f938a2be4e3fde121dc985423d1331103988b8..ac74d7a561cad0b935e5b7d076ab9fa5b4dea120 100644
>--- a/Source/JavaScriptCore/runtime/IntlObject.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlObject.cpp
>@@ -799,12 +799,13 @@ static JSArray* lookupSupportedLocales(ExecState& state, const HashSet<String>&
>         return nullptr;
>     }
> 
>+    unsigned index = 0;
>     for (size_t k = 0; k < len; ++k) {
>         const String& locale = requestedLocales[k];
>         String noExtensionsLocale = removeUnicodeLocaleExtension(locale);
>         String availableLocale = bestAvailableLocale(availableLocales, noExtensionsLocale);
>         if (!availableLocale.isNull()) {
>-            subset->push(&state, jsString(&state, locale));
>+            subset->putDirectIndex(&state, index++, jsString(&state, locale));
>             RETURN_IF_EXCEPTION(scope, nullptr);
>         }
>     }
>@@ -854,6 +855,7 @@ JSValue supportedLocales(ExecState& state, const HashSet<String>& availableLocal
>         supportedLocales->defineOwnProperty(supportedLocales, &state, keys[i], desc, true);
>         RETURN_IF_EXCEPTION(scope, JSValue());
>     }
>+    supportedLocales->defineOwnProperty(supportedLocales, &state, vm.propertyNames->length, desc, true);
> 
>     return supportedLocales;
> }
>@@ -902,17 +904,17 @@ EncodedJSValue JSC_HOST_CALL intlObjectFuncGetCanonicalLocales(ExecState* state)
> 
>     Vector<String> localeList = canonicalizeLocaleList(*state, state->argument(0));
>     RETURN_IF_EXCEPTION(scope, encodedJSValue());
>+    auto length = localeList.size();
> 
>     JSGlobalObject* globalObject = state->jsCallee()->globalObject();
>-    JSArray* localeArray = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous));
>+    JSArray* localeArray = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), length);
>     if (!localeArray) {
>         throwOutOfMemoryError(state, scope);
>         return encodedJSValue();
>     }
> 
>-    auto length = localeList.size();
>     for (size_t i = 0; i < length; ++i) {
>-        localeArray->push(state, jsString(state, localeList[i]));
>+        localeArray->putDirectIndex(state, i, jsString(state, localeList[i]));
>         RETURN_IF_EXCEPTION(scope, encodedJSValue());
>     }
>     return JSValue::encode(localeArray);
>diff --git a/Source/JavaScriptCore/runtime/IntlPluralRules.cpp b/Source/JavaScriptCore/runtime/IntlPluralRules.cpp
>index 7b838f6812e00d89a7edd4379072fc68edf9fc68..4ded13b42f35e32cd896e6e8c13e1c1b1313ec3d 100644
>--- a/Source/JavaScriptCore/runtime/IntlPluralRules.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlPluralRules.cpp
>@@ -226,9 +226,10 @@ JSObject* IntlPluralRules::resolvedOptions(ExecState& exec)
>     int32_t resultLength;
> 
>     // Category names are always ASCII, so use char[].
>+    unsigned index = 0;
>     while (const char* result = uenum_next(keywords.get(), &resultLength, &status)) {
>         ASSERT(U_SUCCESS(status));
>-        categories->push(&exec, jsNontrivialString(&exec, String(result, resultLength)));
>+        categories->putDirectIndex(&exec, index++, jsNontrivialString(&exec, String(result, resultLength)));
>         RETURN_IF_EXCEPTION(scope, { });
>     }
>     options->putDirect(vm, Identifier::fromString(&vm, "pluralCategories"), categories);
>diff --git a/Source/JavaScriptCore/runtime/IntlPluralRulesConstructor.cpp b/Source/JavaScriptCore/runtime/IntlPluralRulesConstructor.cpp
>index 4a9e76971e03f81fac8ccd6c0f66db5190ffc12d..9e50a9badcc71c03ec0d0ea017b7db3443b6bad4 100644
>--- a/Source/JavaScriptCore/runtime/IntlPluralRulesConstructor.cpp
>+++ b/Source/JavaScriptCore/runtime/IntlPluralRulesConstructor.cpp
>@@ -80,7 +80,7 @@ void IntlPluralRulesConstructor::finishCreation(VM& vm, IntlPluralRulesPrototype
>     Base::finishCreation(vm, ASCIILiteral("PluralRules"));
>     putDirectWithoutTransition(vm, vm.propertyNames->prototype, pluralRulesPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
>     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
>-    pluralRulesPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, this, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
>+    pluralRulesPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, this, static_cast<unsigned>(PropertyAttribute::DontEnum));
>     m_pluralRulesStructure.set(vm, this, pluralRulesStructure);
> }
> 
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 749bac8317659afcc4fc39fae2716d27ead3e629..b65c8351db64c85c6ab0808a65c10d17f5a8c9db 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,19 @@
>+2018-05-11  Andy VanWagoner  <andy@vanwagoner.family>
>+
>+        [INTL] Improve spec & test262 compliance for Intl APIs
>+        https://bugs.webkit.org/show_bug.cgi?id=185578
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Update Intl tests for prototype changes.
>+
>+        * js/intl-collator-expected.txt:
>+        * js/intl-datetimeformat-expected.txt:
>+        * js/intl-numberformat-expected.txt:
>+        * js/script-tests/intl-collator.js:
>+        * js/script-tests/intl-datetimeformat.js:
>+        * js/script-tests/intl-numberformat.js:
>+
> 2018-05-11  Nan Wang  <n_wang@apple.com>
> 
>         AX: In role=dialog elements with aria-modal=true VoiceOver iOS/macOS can't manually focus or read dialog paragraph description text inside the modal.
>diff --git a/LayoutTests/js/intl-collator-expected.txt b/LayoutTests/js/intl-collator-expected.txt
>index 63743526aefba48479b11c1111ac451d82dbe949..c483dad120a7d3f18a4ebbaaefec586a42c60d15 100644
>--- a/LayoutTests/js/intl-collator-expected.txt
>+++ b/LayoutTests/js/intl-collator-expected.txt
>@@ -130,9 +130,13 @@ PASS Intl.Collator.supportedLocalesOf('x-12345-12345-en-US') did not throw excep
> PASS Intl.Collator.supportedLocalesOf('x-en-US-12345-12345') did not throw exception.
> PASS Intl.Collator.supportedLocalesOf('x-en-u-foo') did not throw exception.
> PASS Intl.Collator.supportedLocalesOf('x-en-u-foo-u-bar') did not throw exception.
>-PASS Intl.Collator.prototype.constructor is Object
> PASS Object.getPrototypeOf(Intl.Collator.prototype) is Object.prototype
>+PASS Intl.Collator.prototype.constructor is Intl.Collator
>+PASS Intl.Collator.prototype[Symbol.toStringTag] is 'Object'
> PASS Object.prototype.toString.call(Intl.Collator.prototype) is '[object Object]'
>+PASS Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).writable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).enumerable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).configurable is true
> PASS defaultCollator.compare is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.Collator.prototype, 'compare').get is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.Collator.prototype, 'compare').set is undefined
>diff --git a/LayoutTests/js/intl-datetimeformat-expected.txt b/LayoutTests/js/intl-datetimeformat-expected.txt
>index 9afa11d28fc7ce8153c1a6a4f5bd0bc87de0d164..7c857cce8f3a9fd4f0676e7925afe598f700d9aa 100644
>--- a/LayoutTests/js/intl-datetimeformat-expected.txt
>+++ b/LayoutTests/js/intl-datetimeformat-expected.txt
>@@ -62,9 +62,13 @@ PASS Intl.DateTimeFormat.supportedLocalesOf('x-12345-12345-en-US') did not throw
> PASS Intl.DateTimeFormat.supportedLocalesOf('x-en-US-12345-12345') did not throw exception.
> PASS Intl.DateTimeFormat.supportedLocalesOf('x-en-u-foo') did not throw exception.
> PASS Intl.DateTimeFormat.supportedLocalesOf('x-en-u-foo-u-bar') did not throw exception.
>-PASS Intl.DateTimeFormat.prototype.constructor is Object
> PASS Object.getPrototypeOf(Intl.DateTimeFormat.prototype) is Object.prototype
>+PASS Intl.DateTimeFormat.prototype.constructor is Intl.DateTimeFormat
>+PASS Intl.DateTimeFormat.prototype[Symbol.toStringTag] is 'Object'
> PASS Object.prototype.toString.call(Intl.DateTimeFormat.prototype) is '[object Object]'
>+PASS Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).writable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).enumerable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).configurable is true
> PASS defaultDTFormat.format is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, 'format').get is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, 'format').set is undefined
>diff --git a/LayoutTests/js/intl-numberformat-expected.txt b/LayoutTests/js/intl-numberformat-expected.txt
>index ca3587d41a7389c339795360fa7c3a7045c67364..54460e83646f0032d578c4fb7ea37776d8d3f62f 100644
>--- a/LayoutTests/js/intl-numberformat-expected.txt
>+++ b/LayoutTests/js/intl-numberformat-expected.txt
>@@ -130,9 +130,13 @@ PASS Intl.NumberFormat.supportedLocalesOf('x-12345-12345-en-US') did not throw e
> PASS Intl.NumberFormat.supportedLocalesOf('x-en-US-12345-12345') did not throw exception.
> PASS Intl.NumberFormat.supportedLocalesOf('x-en-u-foo') did not throw exception.
> PASS Intl.NumberFormat.supportedLocalesOf('x-en-u-foo-u-bar') did not throw exception.
>-PASS Intl.NumberFormat.prototype.constructor is Object
> PASS Object.getPrototypeOf(Intl.NumberFormat.prototype) is Object.prototype
>+PASS Intl.NumberFormat.prototype.constructor is Intl.NumberFormat
>+PASS Intl.NumberFormat.prototype[Symbol.toStringTag] is 'Object'
> PASS Object.prototype.toString.call(Intl.NumberFormat.prototype) is '[object Object]'
>+PASS Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).writable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).enumerable is false
>+PASS Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).configurable is true
> PASS defaultNFormat.format is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, 'format').get is an instance of Function
> PASS Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, 'format').set is undefined
>diff --git a/LayoutTests/js/script-tests/intl-collator.js b/LayoutTests/js/script-tests/intl-collator.js
>index 3782b2ef83ad503e46aeccf6684f6c89de8a955e..cb3ccf36a6ccff5744fc4468e6f9a5caa7cd40a0 100644
>--- a/LayoutTests/js/script-tests/intl-collator.js
>+++ b/LayoutTests/js/script-tests/intl-collator.js
>@@ -215,10 +215,21 @@ for (var validLanguageTag of validLanguageTags) {
> 
> // 10.3 Properties of the Intl.Collator Prototype Object
> 
>-// is a plain object
>-shouldBe("Intl.Collator.prototype.constructor", "Object");
>+// The Intl.Collator prototype object is itself an ordinary object.
> shouldBe("Object.getPrototypeOf(Intl.Collator.prototype)", "Object.prototype");
>+
>+// 10.3.1 Intl.Collator.prototype.constructor
>+// The initial value of Intl.Collator.prototype.constructor is the intrinsic object %Collator%.
>+shouldBe("Intl.Collator.prototype.constructor", "Intl.Collator");
>+
>+// 10.3.2 Intl.Collator.prototype [ @@toStringTag ]
>+// The initial value of the @@toStringTag property is the string value "Object".
>+shouldBe("Intl.Collator.prototype[Symbol.toStringTag]", "'Object'");
> shouldBe("Object.prototype.toString.call(Intl.Collator.prototype)", "'[object Object]'");
>+// This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).writable");
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).enumerable");
>+shouldBeTrue("Object.getOwnPropertyDescriptor(Intl.Collator.prototype, Symbol.toStringTag).configurable");
> 
> // 10.3.3 Intl.Collator.prototype.compare
> 
>diff --git a/LayoutTests/js/script-tests/intl-datetimeformat.js b/LayoutTests/js/script-tests/intl-datetimeformat.js
>index cbeec6cacfaad37980b283609655dc4205f10cb7..a006993ab71081ad413807a65b99cf53cbb2f141 100644
>--- a/LayoutTests/js/script-tests/intl-datetimeformat.js
>+++ b/LayoutTests/js/script-tests/intl-datetimeformat.js
>@@ -99,14 +99,25 @@ for (var validLanguageTag of validLanguageTags) {
>     shouldNotThrow("Intl.DateTimeFormat.supportedLocalesOf('" + validLanguageTag + "')");
> }
> 
>-// 12.3 Properties of the Intl.DateTimeFormat Prototype Object
>+// 12.4 Properties of the Intl.DateTimeFormat Prototype Object
> 
>-// is a plain object
>-shouldBe("Intl.DateTimeFormat.prototype.constructor", "Object");
>+// The Intl.DateTimeFormat prototype object is itself an ordinary object.
> shouldBe("Object.getPrototypeOf(Intl.DateTimeFormat.prototype)", "Object.prototype");
>+
>+// 12.4.1 Intl.DateTimeFormat.prototype.constructor
>+// The initial value of Intl.DateTimeFormat.prototype.constructor is the intrinsic object %DateTimeFormat%.
>+shouldBe("Intl.DateTimeFormat.prototype.constructor", "Intl.DateTimeFormat");
>+
>+// 12.4.2 Intl.DateTimeFormat.prototype [ @@toStringTag ]
>+// The initial value of the @@toStringTag property is the string value "Object".
>+shouldBe("Intl.DateTimeFormat.prototype[Symbol.toStringTag]", "'Object'");
> shouldBe("Object.prototype.toString.call(Intl.DateTimeFormat.prototype)", "'[object Object]'");
>+// This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).writable");
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).enumerable");
>+shouldBeTrue("Object.getOwnPropertyDescriptor(Intl.DateTimeFormat.prototype, Symbol.toStringTag).configurable");
> 
>-// 12.3.3 Intl.DateTimeFormat.prototype.format
>+// 12.4.3 Intl.DateTimeFormat.prototype.format
> 
> // This named accessor property returns a function that formats a date according to the effective locale and the formatting options of this DateTimeFormat object.
> var defaultDTFormat = Intl.DateTimeFormat();
>@@ -601,4 +612,3 @@ shouldBe(`JSON.stringify(
>   {"type":"literal","value":" "},
>   {"type":"timeZoneName","value":"Pacific Standard Time"}
> ])`)
>-
>diff --git a/LayoutTests/js/script-tests/intl-numberformat.js b/LayoutTests/js/script-tests/intl-numberformat.js
>index dd15e732260db058637d64bfd903f45b37331a5d..aa2af9ff168e5073ec78923998fe6f7453202c97 100644
>--- a/LayoutTests/js/script-tests/intl-numberformat.js
>+++ b/LayoutTests/js/script-tests/intl-numberformat.js
>@@ -215,14 +215,25 @@ for (var validLanguageTag of validLanguageTags) {
>     shouldNotThrow("Intl.NumberFormat.supportedLocalesOf('" + validLanguageTag + "')");
> }
> 
>-// 11.3 Properties of the Intl.NumberFormat Prototype Object
>+// 11.4 Properties of the Intl.NumberFormat Prototype Object
> 
>-// is a plain object
>-shouldBe("Intl.NumberFormat.prototype.constructor", "Object");
>+// The Intl.NumberFormat prototype object is itself an ordinary object.
> shouldBe("Object.getPrototypeOf(Intl.NumberFormat.prototype)", "Object.prototype");
>+
>+// 11.4.1 Intl.NumberFormat.prototype.constructor
>+// The initial value of Intl.NumberFormat.prototype.constructor is the intrinsic object %NumberFormat%.
>+shouldBe("Intl.NumberFormat.prototype.constructor", "Intl.NumberFormat");
>+
>+// 11.4.2 Intl.NumberFormat.prototype [ @@toStringTag ]
>+// The initial value of the @@toStringTag property is the string value "Object".
>+shouldBe("Intl.NumberFormat.prototype[Symbol.toStringTag]", "'Object'");
> shouldBe("Object.prototype.toString.call(Intl.NumberFormat.prototype)", "'[object Object]'");
>+// This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).writable");
>+shouldBeFalse("Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).enumerable");
>+shouldBeTrue("Object.getOwnPropertyDescriptor(Intl.NumberFormat.prototype, Symbol.toStringTag).configurable");
> 
>-// 11.3.3 Intl.NumberFormat.prototype.format
>+// 11.4.3 Intl.NumberFormat.prototype.format
> 
> // This named accessor property returns a function that formats a number according to the effective locale and the formatting options of this NumberFormat object.
> var defaultNFormat = Intl.NumberFormat();
>diff --git a/JSTests/ChangeLog b/JSTests/ChangeLog
>index 407ef6a2912bbde2bfb0ee8543e652093c858576..63b5e25bbbfc46376bcadf4b848a42e2134469b1 100644
>--- a/JSTests/ChangeLog
>+++ b/JSTests/ChangeLog
>@@ -1,3 +1,15 @@
>+2018-05-11  Andy VanWagoner  <andy@vanwagoner.family>
>+
>+        [INTL] Improve spec & test262 compliance for Intl APIs
>+        https://bugs.webkit.org/show_bug.cgi?id=185578
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Remove intl402 failures that have been fixed.
>+
>+        * test262/expectations.yaml:
>+        * stress/regress-178385.js: toStringTag is configurable, but not writable.
>+
> 2018-05-11  Michael Saboff  <msaboff@apple.com>
> 
>         [DFG] Compiler uses incorrect output register for NumberIsInteger operation
>diff --git a/JSTests/stress/regress-178385.js b/JSTests/stress/regress-178385.js
>index 43a61451ad3459a7378747e0954884bd3d2a5012..10a20483a2f7b60412aa5e48d0c70298576c7447 100644
>--- a/JSTests/stress/regress-178385.js
>+++ b/JSTests/stress/regress-178385.js
>@@ -6,7 +6,7 @@ try {
>     var str0 = new String('@hBg');
>     var collat3 = new Intl.Collator();
>     str10 = str0.padEnd(0x7FFFFFFC, 1);
>-    collat3[Symbol.toStringTag] = str10;
>+    Object.defineProperty(collat3, Symbol.toStringTag, { value: str10 });
>     collat3.toLocaleString();
> } catch (e) {
>     exception = e;
>diff --git a/JSTests/test262/expectations.yaml b/JSTests/test262/expectations.yaml
>index 997821996c7020a3b6cad911730ccb16db9e5a2e..ff3bd3862614a21aed5e9f7790a39ce8bf086ac6 100644
>--- a/JSTests/test262/expectations.yaml
>+++ b/JSTests/test262/expectations.yaml
>@@ -1853,54 +1853,27 @@ test/built-ins/parseInt/S15.1.2.2_A2_T10_U180E.js:
> test/harness/assert-throws-early-referenceerror.js:
>   default: 'Test262Error: Function: 1 = 1; Expected a ReferenceError to be thrown but no exception was thrown at all'
>   strict mode: 'Test262Error: Function: 1 = 1; Expected a ReferenceError to be thrown but no exception was thrown at all'
>-test/intl402/Collator/default-options-object-prototype.js:
>-  default: 'Test262Error: Expected SameValue(ÃÂ«baseÃÂ», ÃÂ«variantÃÂ») to be true'
>-  strict mode: 'Test262Error: Expected SameValue(ÃÂ«baseÃÂ», ÃÂ«variantÃÂ») to be true'
> test/intl402/Collator/length.js:
>   default: 'Test262Error: Expected obj[length] to have configurable:true.'
>   strict mode: 'Test262Error: Expected obj[length] to have configurable:true.'
> test/intl402/Collator/prototype/compare/compare-function-name.js:
>   default: 'Test262Error: Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true'
>   strict mode: 'Test262Error: Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true'
>-test/intl402/Collator/prototype/constructor/prop-desc.js:
>-  default: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-  strict mode: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-test/intl402/Collator/prototype/constructor/value.js:
>-  default: 'Test262Error: Intl.Collator.prototype.constructor is not the same as Intl.Collator Expected SameValue(ÃÂ«function Object() {'
>-  strict mode: 'Test262Error: Intl.Collator.prototype.constructor is not the same as Intl.Collator Expected SameValue(ÃÂ«function Object() {'
> test/intl402/Collator/unicode-ext-seq-in-private-tag.js:
>   default: 'Test262Error: Expected SameValue(ÃÂ«phonebkÃÂ», ÃÂ«defaultÃÂ») to be true'
>   strict mode: 'Test262Error: Expected SameValue(ÃÂ«phonebkÃÂ», ÃÂ«defaultÃÂ») to be true'
> test/intl402/DateTimeFormat/length.js:
>   default: 'Test262Error: Expected obj[length] to have configurable:true.'
>   strict mode: 'Test262Error: Expected obj[length] to have configurable:true.'
>-test/intl402/DateTimeFormat/prototype/constructor/prop-desc.js:
>-  default: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-  strict mode: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-test/intl402/DateTimeFormat/prototype/constructor/value.js:
>-  default: 'Test262Error: Intl.DateTimeFormat.prototype.constructor is not the same as Intl.DateTimeFormat Expected SameValue(ÃÂ«function Object() {'
>-  strict mode: 'Test262Error: Intl.DateTimeFormat.prototype.constructor is not the same as Intl.DateTimeFormat Expected SameValue(ÃÂ«function Object() {'
> test/intl402/DateTimeFormat/prototype/format/format-function-name.js:
>   default: 'Test262Error: Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true'
>   strict mode: 'Test262Error: Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true'
> test/intl402/DateTimeFormat/prototype/format/proleptic-gregorian-calendar.js:
>   default: "Test262Error: Internal error: Didn't find Gregorian calendar Expected SameValue(ÃÂ«gregorianÃÂ», ÃÂ«gregoryÃÂ») to be true"
>   strict mode: "Test262Error: Internal error: Didn't find Gregorian calendar Expected SameValue(ÃÂ«gregorianÃÂ», ÃÂ«gregoryÃÂ») to be true"
>-test/intl402/DateTimeFormat/prototype/format/time-clip-near-time-boundaries.js:
>-  default: 'Test262Error: Expected a RangeError to be thrown but no exception was thrown at all'
>-  strict mode: 'Test262Error: Expected a RangeError to be thrown but no exception was thrown at all'
>-test/intl402/DateTimeFormat/prototype/format/time-clip-to-integer.js:
>-  default: 'Test262Error: format(-0.9) Expected SameValue(ÃÂ«8:59:59 PMÃÂ», ÃÂ«9:00:00 PMÃÂ») to be true'
>-  strict mode: 'Test262Error: format(-0.9) Expected SameValue(ÃÂ«8:59:59 PMÃÂ», ÃÂ«9:00:00 PMÃÂ») to be true'
> test/intl402/DateTimeFormat/prototype/formatToParts/length.js:
>   default: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«1ÃÂ») to be true'
>   strict mode: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«1ÃÂ») to be true'
>-test/intl402/DateTimeFormat/prototype/formatToParts/time-clip-near-time-boundaries.js:
>-  default: 'Test262Error: Expected a RangeError to be thrown but no exception was thrown at all'
>-  strict mode: 'Test262Error: Expected a RangeError to be thrown but no exception was thrown at all'
>-test/intl402/DateTimeFormat/prototype/formatToParts/time-clip-to-integer.js:
>-  default: 'Test262Error: formatToParts(-0.9) Expected SameValue(ÃÂ«8:59:59 PMÃÂ», ÃÂ«9:00:00 PMÃÂ») to be true'
>-  strict mode: 'Test262Error: formatToParts(-0.9) Expected SameValue(ÃÂ«8:59:59 PMÃÂ», ÃÂ«9:00:00 PMÃÂ») to be true'
> test/intl402/DateTimeFormat/prototype/resolvedOptions/basic.js:
>   default: 'Test262Error: Invalid calendar: gregorian Expected SameValue(ÃÂ«-1ÃÂ», ÃÂ«-1ÃÂ») to be false'
>   strict mode: 'Test262Error: Invalid calendar: gregorian Expected SameValue(ÃÂ«-1ÃÂ», ÃÂ«-1ÃÂ») to be false'
>@@ -1985,24 +1958,12 @@ test/intl402/Locale/prototype/prop-desc.js:
> test/intl402/Locale/prototype/toStringTag.js:
>   default: "TypeError: undefined is not an object (evaluating 'Intl.Locale.prototype')"
>   strict mode: "TypeError: undefined is not an object (evaluating 'Intl.Locale.prototype')"
>-test/intl402/Number/prototype/toLocaleString/default-options-object-prototype.js:
>-  default: 'Test262Error: Expected SameValue(ÃÂ«1.2ÃÂ», ÃÂ«1.23ÃÂ») to be true'
>-  strict mode: 'Test262Error: Expected SameValue(ÃÂ«1.2ÃÂ», ÃÂ«1.23ÃÂ») to be true'
> test/intl402/Number/prototype/toLocaleString/returns-same-results-as-NumberFormat.js:
>   default: 'Error: Failed to format a number.'
>   strict mode: 'Error: Failed to format a number.'
>-test/intl402/NumberFormat/default-options-object-prototype.js:
>-  default: 'Test262Error: Expected SameValue(ÃÂ«1ÃÂ», ÃÂ«3ÃÂ») to be true'
>-  strict mode: 'Test262Error: Expected SameValue(ÃÂ«1ÃÂ», ÃÂ«3ÃÂ») to be true'
> test/intl402/NumberFormat/length.js:
>   default: 'Test262Error: Expected obj[length] to have configurable:true.'
>   strict mode: 'Test262Error: Expected obj[length] to have configurable:true.'
>-test/intl402/NumberFormat/prototype/constructor/prop-desc.js:
>-  default: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-  strict mode: "TypeError: undefined is not an object (evaluating 'Object.getOwnPropertyDescriptor(obj, name).enumerable')"
>-test/intl402/NumberFormat/prototype/constructor/value.js:
>-  default: 'Test262Error: Intl.NumberFormat.prototype.constructor is not the same as Intl.NumberFormat Expected SameValue(ÃÂ«function Object() {'
>-  strict mode: 'Test262Error: Intl.NumberFormat.prototype.constructor is not the same as Intl.NumberFormat Expected SameValue(ÃÂ«function Object() {'
> test/intl402/NumberFormat/prototype/format/bound-to-numberformat-instance.js:
>   default: 'Error: Failed to format a number.'
>   strict mode: 'Error: Failed to format a number.'
>@@ -2042,12 +2003,6 @@ test/intl402/PluralRules/default-options-object-prototype.js:
> test/intl402/PluralRules/length.js:
>   default: 'Test262Error: Expected obj[length] to have configurable:true.'
>   strict mode: 'Test262Error: Expected obj[length] to have configurable:true.'
>-test/intl402/PluralRules/prototype/constructor/prop-desc.js:
>-  default: 'Test262Error: Expected obj[constructor] to have configurable:true.'
>-  strict mode: 'Test262Error: Expected obj[constructor] to have configurable:true.'
>-test/intl402/String/prototype/localeCompare/default-options-object-prototype.js:
>-  default: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«-1ÃÂ») to be true'
>-  strict mode: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«-1ÃÂ») to be true'
> test/intl402/TypedArray/prototype/toLocaleString/calls-toLocaleString-number-elements.js:
>   default: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«Ã Â¹Â.Ã Â¹ÂÃ Â¹ÂÃ Â¹ÂÃÂ») to be true (Testing with Float64Array.)'
>   strict mode: 'Test262Error: Expected SameValue(ÃÂ«0ÃÂ», ÃÂ«Ã Â¹Â.Ã Â¹ÂÃ Â¹ÂÃ Â¹ÂÃÂ») to be true (Testing with Float64Array.)'
>@@ -2057,15 +2012,6 @@ test/intl402/fallback-locales-are-supported.js:
> test/intl402/language-tags-canonicalized.js:
>   default: 'Test262Error: For de-DD got de-DD; expected de-DE. (Testing with Collator.)'
>   strict mode: 'Test262Error: For de-DD got de-DD; expected de-DE. (Testing with Collator.)'
>-test/intl402/supportedLocalesOf-returned-array-elements-are-frozen.js:
>-  default: 'Test262Error: Property length of object returned by SupportedLocales is writable. Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true (Testing with Collator.)'
>-  strict mode: 'Test262Error: Property length of object returned by SupportedLocales is writable. Expected SameValue(ÃÂ«trueÃÂ», ÃÂ«falseÃÂ») to be true (Testing with Collator.)'
>-test/intl402/supportedLocalesOf-taint-Array-2.js:
>-  default: 'Test262Error: Client code can adversely affect behavior: setter for 0. (Testing with Collator.)'
>-  strict mode: 'Test262Error: Client code can adversely affect behavior: setter for 0. (Testing with Collator.)'
>-test/intl402/supportedLocalesOf-taint-Array.js:
>-  default: 'Test262Error: Client code can adversely affect behavior: setter for 0. (Testing with Collator.)'
>-  strict mode: 'Test262Error: Client code can adversely affect behavior: setter for 0. (Testing with Collator.)'
> test/language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-set-by-arguments.js:
>   default: 'Test262Error: Expected obj[0] to have enumerable:false.'
> test/language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-set-by-param.js:

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Attachments on bug 185578: 340246 | 340250 | 340252