third_party/WebKit/LayoutTests/fast/js/script-tests/cached-eval-gc.js

   1 description(
   2 'Tests to make sure we do not gc the constants contained by functions defined inside eval code.  To pass we need to not crash.'
   3 );
   4
   5 function gc()
   6 {
   7     if (this.GCController)
   8         GCController.collect();
   9     else
  10         for (var i = 0; i < 10000; ++i) // Allocate a sufficient number of objects to force a GC.
  11             ({});
  12 }
  13
  14 evalStringTest = "'test'";
  15 evalString = "function f() { shouldBe(\"'test'\", evalStringTest) }; f()";
  16 function doTest() {
  17     eval(evalString);
  18 }
  19 doTest();
  20 gc();
  21
  22 // Scribble all over the registerfile and c stacks
  23 a={};
  24 a*=({}*{}+{}*{})*({}*{}+{}*{})+({}*{}+{}*{});
  25 [[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]]];
  26 gc();
  27 a={};
  28 a*=({}*{}+{}*{})*({}*{}+{}*{})+({}*{}+{}*{});
  29 [[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]]];
  30 gc();
  31 a={};
  32 a*=({}*{}+{}*{})*({}*{}+{}*{})+({}*{}+{}*{});
  33 [[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]],[[1,2,3],[1,2,3],[1,2,3]]];
  34
  35 doTest();