Attachment 346904 Details for Bug 188378 – Patch

[patch] Patch

bug-188378-20180811002444.patch (text/plain), 5.22 KB, created by Yusuke Suzuki on 2018-08-10 08:24:45 PDT

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Creator: Yusuke Suzuki

Created: 2018-08-10 08:24:45 PDT

Size: 5.22 KB

patch

obsolete

>Subversion Revision: 234753
>diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
>index f048ee111b4c7e6d6f68fd6039859a33b129f7a3..fbb1290548c761ef6cec74ddbeeb674a36e24850 100644
>--- a/Source/JavaScriptCore/ChangeLog
>+++ b/Source/JavaScriptCore/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-08-10  Yusuke Suzuki  <utatane.tea@gmail.com>
>+
>+        Date.UTC should not return NaN with only Year param
>+        https://bugs.webkit.org/show_bug.cgi?id=188378
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+		Date.UTC requires one argument for |year|. But the other ones are optional.
>+		This patch fix this handling.
>+
>+        * runtime/DateConstructor.cpp:
>+        (JSC::millisecondsFromComponents):
>+
> 2018-08-08  Keith Miller  <keith_miller@apple.com>
> 
>         Array.prototype.sort should call @toLength instead of ">>> 0"
>diff --git a/Source/JavaScriptCore/runtime/DateConstructor.cpp b/Source/JavaScriptCore/runtime/DateConstructor.cpp
>index fd442216fec77ca2e4a7b188cfe0c256faae9053..d0c2fc223c12d03c382286f88c01d6559515610f 100644
>--- a/Source/JavaScriptCore/runtime/DateConstructor.cpp
>+++ b/Source/JavaScriptCore/runtime/DateConstructor.cpp
>@@ -88,34 +88,35 @@ static double millisecondsFromComponents(ExecState* exec, const ArgList& args, W
>     VM& vm = exec->vm();
>     auto scope = DECLARE_THROW_SCOPE(vm);
> 
>-    double doubleArguments[7];
>-    for (int i = 0; i < 7; i++) {
>+    // Initialize doubleArguments with default values.
>+    double doubleArguments[7] {
>+        0, 0, 1, 0, 0, 0, 0
>+    };
>+    // First value "year" is not optional. The others are optional.
>+    doubleArguments[0] = args.at(0).toNumber(exec);
>+    RETURN_IF_EXCEPTION(scope, 0);
>+
>+    unsigned numberOfUsedArguments = std::min<unsigned>(7U, args.size());
>+    for (unsigned i = 1; i < numberOfUsedArguments; ++i) {
>         doubleArguments[i] = args.at(i).toNumber(exec);
>         RETURN_IF_EXCEPTION(scope, 0);
>     }
> 
>-    int numArgs = args.size();
>-
>-    if ((!std::isfinite(doubleArguments[0]) || (doubleArguments[0] > INT_MAX) || (doubleArguments[0] < INT_MIN))
>-        || (!std::isfinite(doubleArguments[1]) || (doubleArguments[1] > INT_MAX) || (doubleArguments[1] < INT_MIN))
>-        || (numArgs >= 3 && (!std::isfinite(doubleArguments[2]) || (doubleArguments[2] > INT_MAX) || (doubleArguments[2] < INT_MIN)))
>-        || (numArgs >= 4 && (!std::isfinite(doubleArguments[3]) || (doubleArguments[3] > INT_MAX) || (doubleArguments[3] < INT_MIN)))
>-        || (numArgs >= 5 && (!std::isfinite(doubleArguments[4]) || (doubleArguments[4] > INT_MAX) || (doubleArguments[4] < INT_MIN)))
>-        || (numArgs >= 6 && (!std::isfinite(doubleArguments[5]) || (doubleArguments[5] > INT_MAX) || (doubleArguments[5] < INT_MIN)))
>-        || (numArgs >= 7 && (!std::isfinite(doubleArguments[6]) || (doubleArguments[6] > INT_MAX) || (doubleArguments[6] < INT_MIN))))
>-        return PNaN;
>+    for (unsigned i = 0; i < numberOfUsedArguments; ++i) {
>+        if (!std::isfinite(doubleArguments[i]) || (doubleArguments[i] > INT_MAX) || (doubleArguments[i] < INT_MIN))
>+            return PNaN;
>+    }
> 
>     GregorianDateTime t;
>     int year = JSC::toInt32(doubleArguments[0]);
>     t.setYear((year >= 0 && year <= 99) ? (year + 1900) : year);
>     t.setMonth(JSC::toInt32(doubleArguments[1]));
>-    t.setMonthDay((numArgs >= 3) ? JSC::toInt32(doubleArguments[2]) : 1);
>+    t.setMonthDay(JSC::toInt32(doubleArguments[2]));
>     t.setHour(JSC::toInt32(doubleArguments[3]));
>     t.setMinute(JSC::toInt32(doubleArguments[4]));
>     t.setSecond(JSC::toInt32(doubleArguments[5]));
>     t.setIsDST(-1);
>-    double ms = (numArgs >= 7) ? doubleArguments[6] : 0;
>-    return gregorianDateTimeToMS(vm, t, ms, timeType);
>+    return gregorianDateTimeToMS(vm, t, doubleArguments[6], timeType);
> }
> 
> // ECMA 15.9.3
>diff --git a/JSTests/ChangeLog b/JSTests/ChangeLog
>index e83671fd371f22362816ec9cf7593dccd37eb84d..abd041e7584cf082aabf59b962d717639de0b76e 100644
>--- a/JSTests/ChangeLog
>+++ b/JSTests/ChangeLog
>@@ -1,3 +1,13 @@
>+2018-08-10  Yusuke Suzuki  <utatane.tea@gmail.com>
>+
>+        Date.UTC should not return NaN with only Year param
>+        https://bugs.webkit.org/show_bug.cgi?id=188378
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * stress/date-utc-optional.js: Added.
>+        (shouldBe):
>+
> 2018-08-08  Keith Miller  <keith_miller@apple.com>
> 
>         Array.prototype.sort should call @toLength instead of ">>> 0"
>diff --git a/JSTests/stress/date-utc-optional.js b/JSTests/stress/date-utc-optional.js
>new file mode 100644
>index 0000000000000000000000000000000000000000..4e723a9cccfd868aa1bf888dbbc19026693b81b8
>--- /dev/null
>+++ b/JSTests/stress/date-utc-optional.js
>@@ -0,0 +1,16 @@
>+function shouldBe(actual, expected) {
>+    if (actual !== expected)
>+        throw new Error('bad value: ' + actual);
>+}
>+
>+for (var i = 0; i < 1e5; ++i) {
>+    shouldBe(Number.isNaN(Date.UTC()), false);
>+    shouldBe(Date.UTC(2018), 1514764800000);
>+    shouldBe(Date.UTC(2018, 1), 1517443200000);
>+    shouldBe(Date.UTC(2018, 1, 2), 1517529600000);
>+    shouldBe(Date.UTC(2018, 1, 2, 3), 1517540400000);
>+    shouldBe(Date.UTC(2018, 1, 2, 3, 4), 1517540640000);
>+    shouldBe(Date.UTC(2018, 1, 2, 3, 4, 5), 1517540645000);
>+    shouldBe(Date.UTC(2018, 1, 2, 3, 4, 5, 6), 1517540645006);
>+    shouldBe(Date.UTC(2018, 1, 2, 3, 4, 5, 6, 7), 1517540645006);
>+}

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