452561 - Function decompiles into one with "SyntaxError: invalid object initializer" (involves destructuring assignment and ?:)

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[Jesse Ruderman]

js> function f() { [a] = 1 ? function(){} : [b] }
js> f
function f() {
    [a] = function () {};
}

js> eval("(" + f + ")")
typein:4: SyntaxError: invalid object initializer:
typein:4:     [a] = function () {};
typein:4: ......................^

SpiderMonkey should either accept both, reject both, or not turn the former into the latter.  I think accepting both makes the most sense, but I don't know the ecmascript parsing requirements.

(Tracemonkey branch, jit disabled.)

Comment 1

[Jesse Ruderman]

WFM.  The decompilation is unchanged from when I reported this bug, but it is now accepted.