commit c5610438f36f65235862a5f5020a739d29a5c32e
author Ben Murdoch <benm@google.com> Mon Aug 08 18:44:38 2016 +0100
committer Dirk Vogt <dirk@fairphone.com> Fri Mar 17 16:06:37 2017 +0100
tree 846d2ea15b4932324d6507083a8b0f6086122398
parent c1074e1b8891cf05f36a1cfb7ddc0364fb95d73c

Merge V8 5.2.361.47  DO NOT MERGE

https://chromium.googlesource.com/v8/v8/+/5.2.361.47

FPIIM-449

Change-Id: Ibec421b85a9b88cb3a432ada642e469fe7e78346
(cherry picked from commit bcf72ee8e3b26f1d0726869c7ddb3921c68b09a8)

test/mjsunit/arguments.js

diff --git a/test/mjsunit/arguments.js b/test/mjsunit/arguments.js
index 26eb389..97ec7cc 100644
--- a/test/mjsunit/arguments.js
+++ b/test/mjsunit/arguments.js
@@ -204,3 +204,70 @@
   }
   assertTrue(%HasSloppyArgumentsElements(a));
 })();
+
+(function testDeleteArguments() {
+  function f() { return arguments };
+  var args = f(1, 2);
+  assertEquals(1, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(2, args.length);
+
+  delete args[0];
+  assertEquals(undefined, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(2, args.length);
+
+  delete args[1];
+  assertEquals(undefined, args[0]);
+  assertEquals(undefined, args[1]);
+  assertEquals(2, args.length);
+})();
+
+(function testDeleteFastSloppyArguments() {
+  function f(a) { return arguments };
+  var args = f(1, 2);
+  assertEquals(1, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(2, args.length);
+
+  delete args[0];
+  assertEquals(undefined, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(2, args.length);
+
+  delete args[1];
+  assertEquals(undefined, args[0]);
+  assertEquals(undefined, args[1]);
+  assertEquals(2, args.length);
+})();
+
+(function testDeleteSlowSloppyArguments() {
+  var key = 10000;
+  function f(a) {
+    arguments[key] = key;
+    return arguments
+  };
+  var args = f(1, 2);
+  assertEquals(1, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(key, args[key]);
+  assertEquals(2, args.length);
+
+  delete args[0];
+  assertEquals(undefined, args[0]);
+  assertEquals(2, args[1]);
+  assertEquals(key, args[key]);
+  assertEquals(2, args.length);
+
+  delete args[1];
+  assertEquals(undefined, args[0]);
+  assertEquals(undefined, args[1]);
+  assertEquals(key, args[key]);
+  assertEquals(2, args.length);
+
+  delete args[key];
+  assertEquals(undefined, args[0]);
+  assertEquals(undefined, args[1]);
+  assertEquals(undefined, args[key]);
+  assertEquals(2, args.length);
+})();