test/mjsunit/function-caller.js

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function f(match) {
  g(match);
}

function g(match) {
  assertEquals(f, g.caller);
  assertEquals(match, f.caller);
}

// Check called from function.
function h() {
  f(h);
}
h();

// Check called from top-level.
f(null);

// Check called from eval.
eval('f(null)');

// Check called from builtin functions.
[null, null].sort(f);
[null].forEach(f, null);
"abel".replace(/b/g, function h() {
   assertEquals(null, h.caller);
});