Closed Bug 1313034 Opened 8 years ago Closed 8 years ago

ImmutableBinding of "ES-6" not work in loop "for-in"

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Version:
49 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 449811

People

(Reporter: i.priladnyh, Unassigned)

Details

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
Build ID: 20161019084923

Steps to reproduce:

Im run code:

let o = { a:1, s:2, d:3, f:4, g:5, h:6};

for(let i in o){
  setTimeout(function(){
    alert(i)
  }, 0);
}




Actual results:

That code always alerting 'h' symbol.


Expected results:

Should be alerting sequence of all keys ('a', 's', 'd', 'f', 'g', 'h')
dupe of bug 449811 and it's fixed in bug 1263355 (firefox 51).
Status: UNCONFIRMED → RESOLVED
Closed: 8 years ago
Component: Untriaged → JavaScript Engine
Product: Firefox → Core
Resolution: --- → DUPLICATE
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