test/mjsunit/regress/regress-74.js

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// Test that the variable introduced by catch blocks is DontDelete.
// See http://code.google.com/p/v8/issues/detail?id=74

function test() {
  try {
    throw 42;
  } catch(e) {
    assertFalse(delete e, "deleting catch variable");
    assertEquals(42, e);
  }
}

test();