V8 typeof(Function(str)) is undefined

[victoria yang]

Hi,

  Recently I encountered an issue in V8. 

Issue: 

typeof(Function(str)) is undefined

Env:

Step1: In One Isolate, I create Context A (Run Common JS bundle ) and Context B(Run Business JS Bundle), and set Same SecurityToken.

Step2:  

In ContextA  had JS code Below :

 testFunction(){

  let tmpFunc = Function("(function test(\n) {\nreturn 7;\n})\n");

  console.log(typeof tmpFunc);

}

on ContextA, run testFunction(), console result is 'function'

Step3:

In ContextB, call testFunction in ContextA

console result is 'undefined',

and run tmpFunc(), report Exception ' is not a function'

And For Object.create() 、Object.is() and so on shows OK. Only StringToFunction shows error.

Do you know Why it causes such an issue? Any Advice ?

Pls,help. 

Thank you for your time and I look forward to your reply.

[Leszek Swirski]

I've tried to reproduce your issue using d8 Realms, but don't see the same error:

$ cat /tmp/realmstest.js
function testFunction(){

  let tmpFunc = Function("(function test(\n) {\nreturn 7;\n})\n");
  console.log(typeof tmpFunc);
}

testFunction();

let realm = Realm.createAllowCrossRealmAccess();
Realm.eval(realm, 'Realm.global(0).testFunction();');

$ v8 /tmp/realmstest.js
function
function

Could you please file a bug on https://crbug.com/v8 with a reproducing test case?

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