568734 - Some decompiled code with sharps does not compile

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Jesse Ruderman]

jsfunfuzz discovered this quickly after I let it know that bug 367731 was marked as WFM.

js> (function () {#1=(a = b);})
(function () {#1=a = b;})

js> (function () {#1=a = b;})   
typein:10: SyntaxError: invalid assignment left-hand side:
typein:10: (function () {#1=a = b;})
typein:10: ...................^

Comment 1

[Biju]

//problem is in another case 
// say following 
(function () {x={a:x=(a = b, 1)};})
;// give ==>
(function () {x = {a: x = (a = b, 1)};})
;// give ==>
(function () {x = {a: x = (a = b, 1)};})

; // but 

(function () {x={a:#1=(a = b, a)};})
; // gives ==>
(function () { x = {a: #1=a = b, a};})
; // gives ==>
// error invalid assignment left-hand side

issue exist even in 
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.5pre) 
Gecko/20100530 Namoroka/3.6.5pre

Comment 2

[Biju]

// original case work around 
(function () {#1=(a = b);})
;// make it as ==>
(function () {a =(#1=b);})
;// gives ==>
(function () {a = #1=b;})
;// gives ==>
(function () {a = #1=b;})
;

Comment 3

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Fixed by bug 566700, the removal of sharp variables.