bug-1431353-2.js - mozsearch

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// |jit-test| skip-if: helperThreadCount() === 0

// Test off-thread parsing correctly fixes up prototypes of special objects when

// merging back to the target compartment.

function execOffThread(source)

    offThreadCompileToStencil(source);

    var stencil = finishOffThreadStencil();

    return evalStencil(stencil);

function parseModuleOffThread(source)

    offThreadCompileModuleToStencil(source);

    var stencil = finishOffThreadStencil();

    return instantiateModuleStencil(stencil);

let a = { x: 1 };

let b = execOffThread("undefined, { x: 1 }")

let c = execOffThread("undefined, { x: 1 }")

assertEq(Object.getPrototypeOf(a), Object.prototype);

assertEq(Object.getPrototypeOf(b), Object.prototype);

assertEq(Object.getPrototypeOf(c), Object.prototype);

a = () => 1;

b = execOffThread("() => 1")

c = execOffThread("() => 1")

assertEq(Object.getPrototypeOf(a), Function.prototype);

assertEq(Object.getPrototypeOf(b), Function.prototype);

assertEq(Object.getPrototypeOf(c), Function.prototype);

a = [1, 2, 3];

b = execOffThread("[1, 2, 3]")

c = execOffThread("[1, 2, 3]")

assertEq(Object.getPrototypeOf(a), Array.prototype);

assertEq(Object.getPrototypeOf(b), Array.prototype);

assertEq(Object.getPrototypeOf(c), Array.prototype);

a = /a/;

b = execOffThread("/a/")

c = execOffThread("/a/")

assertEq(Object.getPrototypeOf(a), RegExp.prototype);

assertEq(Object.getPrototypeOf(b), RegExp.prototype);

assertEq(Object.getPrototypeOf(c), RegExp.prototype);

a = parseModule("");

b = parseModuleOffThread("");

c = parseModuleOffThread("");

assertEq(Object.getPrototypeOf(b), Object.getPrototypeOf(a));

assertEq(Object.getPrototypeOf(c), Object.getPrototypeOf(a));