[Webkit-unassigned] [Bug 188382] New: Array.prototype.sort should throw TypeError if param is a not callable object

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188382

            Bug ID: 188382
           Summary: Array.prototype.sort should throw TypeError if param
                    is a not callable object
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: isol2 at cin.ufpe.br

Hi everyone,

According to ES specification (https://tc39.github.io/ecma262/#sec-array.prototype.sort) Array.sort param should be a comparefn or undefined value, otherwise 
should throw a TypeError.

steps to reproduce:

var obj = {};
var arr = [];
arr.sort(obj);
arr.sort(obj, obj);

Actual results:
pass without failures

Expected results:
TypeError: The comparison function must be either a function or undefined


V8, Chakra and Spidermonkey works as expected.

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