array(5) {
  [0]=>
  array(6) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(9)
    ["function"]=>
    string(3) "foo"
    ["class"]=>
    string(1) "A"
    ["type"]=>
    string(2) "::"
    ["args"]=>
    array(0) {
    }
  }
  [1]=>
  array(7) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(15)
    ["function"]=>
    string(3) "bar"
    ["class"]=>
    string(1) "A"
    ["object"]=>
    object(A)#1 (0) {
    }
    ["type"]=>
    string(2) "->"
    ["args"]=>
    array(3) {
      [0]=>
      int(1)
      [1]=>
      string(3) "str"
      [2]=>
      array(3) {
        [0]=>
        int(1)
        [1]=>
        int(2)
        [2]=>
        int(3)
      }
    }
  }
  [2]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(20)
    ["function"]=>
    string(3) "bar"
    ["args"]=>
    array(0) {
    }
  }
  [3]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(29)
    ["function"]=>
    string(3) "foo"
    ["args"]=>
    array(0) {
    }
  }
  [4]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(34)
    ["function"]=>
    string(4) "main"
    ["args"]=>
    array(0) {
    }
  }
}
array(5) {
  [0]=>
  array(6) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(9)
    ["function"]=>
    string(3) "foo"
    ["class"]=>
    string(1) "A"
    ["type"]=>
    string(2) "::"
    ["args"]=>
    array(0) {
    }
  }
  [1]=>
  array(5) {
    ["function"]=>
    string(3) "bar"
    ["class"]=>
    string(1) "A"
    ["object"]=>
    object(A)#1 (0) {
    }
    ["type"]=>
    string(2) "->"
    ["args"]=>
    array(2) {
      [0]=>
      int(1)
      [1]=>
      int(2)
    }
  }
  [2]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(20)
    ["function"]=>
    string(3) "bar"
    ["args"]=>
    array(0) {
    }
  }
  [3]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(29)
    ["function"]=>
    string(3) "foo"
    ["args"]=>
    array(0) {
    }
  }
  [4]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(34)
    ["function"]=>
    string(4) "main"
    ["args"]=>
    array(0) {
    }
  }
}
array(2) {
  [0]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(32)
    ["function"]=>
    string(13) "error_handler"
    ["args"]=>
    array(6) {
      [0]=>
      int(8)
      [1]=>
      string(63) "Use of undefined constant FakeConstant - assumed 'FakeConstant'"
      [2]=>
      string() "hphp/test/vm/debug_backtrace.php"
      [3]=>
      int(32)
      [4]=>
      string(0) ""
      [5]=>
      array(2) {
        [0]=>
        array(2) {
          ["file"]=>
          string() "hphp/test/vm/debug_backtrace.php"
          ["line"]=>
          int(32)
        }
        [1]=>
        array(4) {
          ["file"]=>
          string() "hphp/test/vm/debug_backtrace.php"
          ["line"]=>
          int(34)
          ["function"]=>
          string(4) "main"
          ["args"]=>
          array(0) {
          }
        }
      }
    }
  }
  [1]=>
  array(4) {
    ["file"]=>
    string() "hphp/test/vm/debug_backtrace.php"
    ["line"]=>
    int(34)
    ["function"]=>
    string(4) "main"
    ["args"]=>
    array(0) {
    }
  }
}