[Intl] Fix m(ax|in)imumFractionDigits for currency

Fix m(ax|in)imumFractionDigits of Intl.NumberFormat
resolvedOptions are set to 0. For example, currency
instance for CPY or KRW.

Bug: chromium:1003748
Change-Id: Ia1963d8d070b066bd5afa61f8c4716a21450af05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807742Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63850}

src/objects/js-number-format.cc

@@ -731,26 +731,23 @@ Handle<JSObject> JSNumberFormat::ResolvedOptions(
           .FromJust());
 
   int32_t minimum = 0, maximum = 0;
-  if (FractionDigitsFromSkeleton(skeleton, &minimum, &maximum)) {
+  if (SignificantDigitsFromSkeleton(skeleton, &minimum, &maximum)) {
     CHECK(JSReceiver::CreateDataProperty(
-              isolate, options, factory->minimumFractionDigits_string(),
+              isolate, options, factory->minimumSignificantDigits_string(),
               factory->NewNumberFromInt(minimum), Just(kDontThrow))
               .FromJust());
     CHECK(JSReceiver::CreateDataProperty(
-              isolate, options, factory->maximumFractionDigits_string(),
+              isolate, options, factory->maximumSignificantDigits_string(),
               factory->NewNumberFromInt(maximum), Just(kDontThrow))
               .FromJust());
-  }
-
-  minimum = 0;
-  maximum = 0;
-  if (SignificantDigitsFromSkeleton(skeleton, &minimum, &maximum)) {
+  } else {
+    FractionDigitsFromSkeleton(skeleton, &minimum, &maximum);
     CHECK(JSReceiver::CreateDataProperty(
-              isolate, options, factory->minimumSignificantDigits_string(),
+              isolate, options, factory->minimumFractionDigits_string(),
               factory->NewNumberFromInt(minimum), Just(kDontThrow))
               .FromJust());
     CHECK(JSReceiver::CreateDataProperty(
-              isolate, options, factory->maximumSignificantDigits_string(),
+              isolate, options, factory->maximumFractionDigits_string(),
               factory->NewNumberFromInt(maximum), Just(kDontThrow))
               .FromJust());
   }

test/intl/regress-1003748.js

+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+let usd = new Intl.NumberFormat('en',
+    { style: 'currency', currency: 'USD' }).resolvedOptions();
+assertEquals(2, usd.maximumFractionDigits);
+assertEquals(2, usd.minimumFractionDigits);
+
+let jpy = new Intl.NumberFormat('en',
+    { style: 'currency', currency: 'JPY' }).resolvedOptions();
+assertEquals(0, jpy.maximumFractionDigits);
+assertEquals(0, jpy.minimumFractionDigits);
+
+let krw = new Intl.NumberFormat('en',
+    { style: 'currency', currency: 'KRW' }).resolvedOptions();
+assertEquals(0, krw.maximumFractionDigits);
+assertEquals(0, krw.minimumFractionDigits);