src/third_party/v8/test/mjsunit/strict-mode-eval.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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"use strict";

var code1 = "function f(eval) {}";
var code2 = "function f(a, a) {}";
var code3 = "var x = '\\020;'";
var code4 = "function arguments() {}";

// Verify the code compiles just fine in non-strict mode
// (using aliased eval to force non-strict mode)
var eval_alias = eval;

eval_alias(code1);
eval_alias(code2);
eval_alias(code3);
eval_alias(code4);

function strict1() {
  var exception = false;
  try {
    eval(code1);
  } catch (e) {
    exception = true;
    assertInstanceof(e, SyntaxError);
  }
  assertTrue(exception);

  function strict2() {
    var exception = false;
    try {
      eval(code2);
    } catch (e) {
      exception = true;
      assertInstanceof(e, SyntaxError);
    }
    assertTrue(exception);

    function strict3() {
      var exception = false;
      try {
        eval(code3);
      } catch (e) {
        exception = true;
        assertInstanceof(e, SyntaxError);
      }
      assertTrue(exception);

      function strict4() {
        var exception = false;
        try {
          eval(code4);
        } catch (e) {
          exception = true;
          assertInstanceof(e, SyntaxError);
        }
        assertTrue(exception);
      }
      strict4();
    }
    strict3();
  }
  strict2();
}
strict1();