[Webkit-unassigned] [Bug 221177] New: A possible bug about Array.prototype.push

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221177

            Bug ID: 221177
           Summary: A possible bug about Array.prototype.push
           Product: WebKit
           Version: WebKit Local Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: nisl_grammarly1 at 163.com

#version: d940b47

#Testcase
var a=[1,2];
Object.freeze(a); 
var b=a.push(); 
print(b);

#Command:
./webkit/WebKitBuild/Release/bin/jsc testcase.js

#Output:
2

#Expected output:
TypeError: "length" is read-only

# Description
When executing this test case, a is frozen in the second line, so an error should be thrown when executing Array.prototype.push, but JavaScriptCore outputs normally.

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