test/mjsunit/regress/regress-crbug-240032.js

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//
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// Flags: --allow-natives-syntax

// Generate closures in that live in new-space.
function mk() {
  return function() {};
}
assertInstanceof(mk(), Function);
assertInstanceof(mk(), Function);

// Setup constant function using above closures.
var o = {};
o.func = mk();

// Optimize object comparison with new-space RHS.
function cmp(o, f) {
  return f === o.func;
}
assertTrue(cmp(o, o.func));
assertTrue(cmp(o, o.func));
%OptimizeFunctionOnNextCall(cmp);
assertTrue(cmp(o, o.func));