572589 - 1.8 style destructuring without var/let incorrectly assigns to global, skipping intermediate scope

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[satyr]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.4) Gecko/20100611 Firefox/3.6.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a6pre) Gecko/20100616 Minefield/3.7a6pre (.NET CLR 3.5.30729)

var x = 0;
function outer(x){
  return function inner(x){
    0, {x} = {x: 789};
    return x;
  }
}
[outer(123)(456), x]

The above produces [456, 789], which should be [789, 0].
It works correctly if I replaced the "0," with "var".



Reproducible: Always

Steps to Reproduce:
1. Open Error Console
2. Type in: [x = 0, (function(x)({x} = {x: 2}, x))(1), x]
3. Evaluate

Actual Results:  
0,1,2

Expected Results:  
0,2,0

Comment 1

[André Bargull [:anba]]

No longer reproducible - Resolving as WFM.