v8/test/mjsunit/arguments-load-across-eval.js

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// Tests loading of aguments across eval calls.

// Test loading across an eval call that does not shadow variables.
function testNoShadowing(x, h) {
  function f() {
    eval('1');
    assertEquals(1, x);
    assertEquals(2, h());
    function g() {
      assertEquals(1, x);
      assertEquals(2, h());
    }
    g();
  }
  f();
}

testNoShadowing(1, function() { return 2; });

// Test loading across eval calls that do not shadow variables.
function testNoShadowing2(x, h) {
  eval('1');
  function f() {
    eval('1');
    assertEquals(1, x);
    assertEquals(2, h());
    function g() {
      assertEquals(1, x);
      assertEquals(2, h());
    }
    g();
  }
  f();
}

testNoShadowing2(1, function() { return 2; });

// Test loading across an eval call that shadows variables.
function testShadowing(x, h) {
  function f() {
    assertEquals(1, x);
    assertEquals(2, h());
    eval('var x = 3; var h = function() { return 4; };');
    assertEquals(3, x);
    assertEquals(4, h());
    function g() {
      assertEquals(3, x);
      assertEquals(4, h());
    }
    g();
  }
  f();
  assertEquals(1, x);
  assertEquals(2, h());
}

testShadowing(1, function() { return 2; });