tests/stress/get-my-argument-by-val-creates-arguments.js

   1 function blah(args) {
   2     var array = [];
   3     for (var i = 0; i < args.length; ++i)
   4         array.push(args[i]);
   5     return array;
   6 }
   7
   8 function foo() {
   9     // Force creation of arguments by doing out-of-bounds access.
  10     var tmp = arguments[42];
  11
  12     // Use the created arguments object.
  13     return blah(arguments);
  14 }
  15
  16 function bar(array) {
  17     return foo.apply(this, array);
  18 }
  19
  20 noInline(blah);
  21 noInline(bar);
  22
  23 function checkEqual(a, b) {
  24     if (a.length != b.length)
  25         throw "Error: length mismatch: " + a + " versus " + b;
  26     for (var i = a.length; i--;) {
  27         if (a[i] != b[i])
  28             throw "Error: mismatch at i = " + i + ": " + a + " versus " + b;
  29     }
  30 }
  31
  32 function test(array) {
  33     var actual = bar(array);
  34     checkEqual(actual, array);
  35 }
  36
  37 for (var i = 0; i < 10000; ++i) {
  38     var array = [];
  39     for (var j = 0; j < i % 6; ++j)
  40         array.push(j);
  41     test(array);
  42 }