[Webkit-unassigned] [Bug 187092] New: Inconsistent output compared with other JS engines

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=187092

            Bug ID: 187092
           Summary: Inconsistent output compared with other JS engines
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sunlili at ict.ac.cn

Hello,
The following code behaves strangely (inconsistent with other engines).

v1 = new (Float64Array)();
v2 = {
    valueOf : function () {
        v3.y = "bar";
        return 42; }
};
v3 = v1;
v3[0] = v2;
print(JSON.stringify(v1));

In Safari, output is
{"y":"bar"}

However, in V8 and Firefox, output is
{}

BT group
2018.6.27

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