Implement fast load and call of arguments in the presence of eval....

test/mjsunit/arguments-load-across-eval.js

Index: test/mjsunit/arguments-load-across-eval.js
===================================================================
--- test/mjsunit/arguments-load-across-eval.js	(revision 0)
+++ test/mjsunit/arguments-load-across-eval.js	(revision 0)
@@ -0,0 +1,86 @@
+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Tests loading of aguments across eval calls.
+
+// Test loading across an eval call that does not shadow variables.
+function testNoShadowing(x, h) {
+  function f() {
+    eval('1');
+    assertEquals(1, x);
+    assertEquals(2, h());
+    function g() {
+      assertEquals(1, x);
+      assertEquals(2, h());
+    }
+    g();
+  }
+  f();
+}
+
+testNoShadowing(1, function() { return 2; });
+
+// Test loading across eval calls that do not shadow variables.
+function testNoShadowing2(x, h) {
+  eval('1');
+  function f() {
+    eval('1');
+    assertEquals(1, x);
+    assertEquals(2, h());
+    function g() {
+      assertEquals(1, x);
+      assertEquals(2, h());
+    }
+    g();
+  }
+  f();
+}
+
+testNoShadowing2(1, function() { return 2; });
+
+// Test loading across an eval call that shadows variables.
+function testShadowing(x, h) {
+  function f() {
+    assertEquals(1, x);
+    assertEquals(2, h());
+    eval('var x = 3; var h = function() { return 4; };');
+    assertEquals(3, x);
+    assertEquals(4, h());
+    function g() {
+      assertEquals(3, x);
+      assertEquals(4, h());
+    }
+    g();
+  }
+  f();
+  assertEquals(1, x);
+  assertEquals(2, h());
+}
+
+testShadowing(1, function() { return 2; });
+
+