Revision: 21534
Author:   mstarzin...@chromium.org
Date:     Tue May 27 15:00:26 2014 UTC
Log:      Revert "Make 'name' property on functions configurable."

R=da...@google.com, da...@chromium.org

Review URL: https://codereview.chromium.org/297163009
http://code.google.com/p/v8/source/detail?r=21534

Modified:
 /branches/bleeding_edge/src/bootstrapper.cc
 /branches/bleeding_edge/test/mjsunit/es7/object-observe.js
 /branches/bleeding_edge/test/mjsunit/regress/regress-1530.js
 /branches/bleeding_edge/test/mjsunit/regress/regress-270142.js

=======================================
--- /branches/bleeding_edge/src/bootstrapper.cc Tue May 27 13:20:58 2014 UTC
+++ /branches/bleeding_edge/src/bootstrapper.cc Tue May 27 15:00:26 2014 UTC
@@ -386,47 +386,45 @@
   int size = (prototypeMode == DONT_ADD_PROTOTYPE) ? 4 : 5;
   Map::EnsureDescriptorSlack(map, size);

-  PropertyAttributes ro_attribs =
-      static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
-  PropertyAttributes roc_attribs =
-      static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
+  PropertyAttributes attribs = static_cast<PropertyAttributes>(
+      DONT_ENUM | DONT_DELETE | READ_ONLY);

   Handle<AccessorInfo> length =
-      Accessors::FunctionLengthInfo(isolate(), ro_attribs);
+      Accessors::FunctionLengthInfo(isolate(), attribs);
   {  // Add length.
     CallbacksDescriptor d(Handle<Name>(Name::cast(length->name())),
-                          length, ro_attribs);
+                          length, attribs);
     map->AppendDescriptor(&d);
   }
   Handle<AccessorInfo> name =
-      Accessors::FunctionNameInfo(isolate(), roc_attribs);
+      Accessors::FunctionNameInfo(isolate(), attribs);
   {  // Add name.
     CallbacksDescriptor d(Handle<Name>(Name::cast(name->name())),
-                          name, roc_attribs);
+                          name, attribs);
     map->AppendDescriptor(&d);
   }
   Handle<AccessorInfo> args =
-      Accessors::FunctionArgumentsInfo(isolate(), ro_attribs);
+      Accessors::FunctionArgumentsInfo(isolate(), attribs);
   {  // Add arguments.
     CallbacksDescriptor d(Handle<Name>(Name::cast(args->name())),
-                          args, ro_attribs);
+                          args, attribs);
     map->AppendDescriptor(&d);
   }
   Handle<AccessorInfo> caller =
-      Accessors::FunctionCallerInfo(isolate(), ro_attribs);
+      Accessors::FunctionCallerInfo(isolate(), attribs);
   {  // Add caller.
     CallbacksDescriptor d(Handle<Name>(Name::cast(caller->name())),
-                          caller, ro_attribs);
+                          caller, attribs);
     map->AppendDescriptor(&d);
   }
   if (prototypeMode != DONT_ADD_PROTOTYPE) {
     if (prototypeMode == ADD_WRITEABLE_PROTOTYPE) {
- ro_attribs = static_cast<PropertyAttributes>(ro_attribs & ~READ_ONLY);
+      attribs = static_cast<PropertyAttributes>(attribs & ~READ_ONLY);
     }
     Handle<AccessorInfo> prototype =
-        Accessors::FunctionPrototypeInfo(isolate(), ro_attribs);
+        Accessors::FunctionPrototypeInfo(isolate(), attribs);
     CallbacksDescriptor d(Handle<Name>(Name::cast(prototype->name())),
-                          prototype, ro_attribs);
+                          prototype, attribs);
     map->AppendDescriptor(&d);
   }
 }
@@ -535,8 +533,6 @@
       static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
   PropertyAttributes ro_attribs =
       static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
-  PropertyAttributes roc_attribs =
-      static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);

   Handle<AccessorInfo> length =
       Accessors::FunctionLengthInfo(isolate(), ro_attribs);
@@ -546,10 +542,10 @@
     map->AppendDescriptor(&d);
   }
   Handle<AccessorInfo> name =
-      Accessors::FunctionNameInfo(isolate(), roc_attribs);
+      Accessors::FunctionNameInfo(isolate(), ro_attribs);
   {  // Add name.
     CallbacksDescriptor d(Handle<Name>(Name::cast(name->name())),
-                          name, roc_attribs);
+                          name, ro_attribs);
     map->AppendDescriptor(&d);
   }
   {  // Add arguments.
=======================================
--- /branches/bleeding_edge/test/mjsunit/es7/object-observe.js Mon May 26 11:42:56 2014 UTC +++ /branches/bleeding_edge/test/mjsunit/es7/object-observe.js Tue May 27 15:00:26 2014 UTC
@@ -1142,8 +1142,7 @@
 function blacklisted(obj, prop) {
   return (obj instanceof Int32Array && prop == 1) ||
          (obj instanceof Int32Array && prop === "length") ||
-         (obj instanceof ArrayBuffer && prop == 1) ||
-         (obj instanceof Function && prop === "name")
+         (obj instanceof ArrayBuffer && prop == 1)
 }

 for (var i in objects) for (var j in properties) {
=======================================
--- /branches/bleeding_edge/test/mjsunit/regress/regress-1530.js Mon May 26 11:42:56 2014 UTC +++ /branches/bleeding_edge/test/mjsunit/regress/regress-1530.js Tue May 27 15:00:26 2014 UTC
@@ -62,9 +62,8 @@
 assertSame(Object.getPrototypeOf(new f()), z);
 assertSame(Object.getOwnPropertyDescriptor(f, 'prototype').value, z);

-// Verify that non-configurability of other properties is respected, but
-// non-writability is ignored by Object.defineProperty().
-assertDoesNotThrow("Object.defineProperty(f, 'name', { value: {} })");
+// Verify that non-writability of other properties is respected.
+assertThrows("Object.defineProperty(f, 'name', { value: {} })");
 assertThrows("Object.defineProperty(f, 'length', { value: {} })");
 assertThrows("Object.defineProperty(f, 'caller', { value: {} })");
 assertThrows("Object.defineProperty(f, 'arguments', { value: {} })");
=======================================
--- /branches/bleeding_edge/test/mjsunit/regress/regress-270142.js Mon May 26 11:42:56 2014 UTC +++ /branches/bleeding_edge/test/mjsunit/regress/regress-270142.js Tue May 27 15:00:26 2014 UTC
@@ -39,7 +39,7 @@

 function checkNameDescriptor(f) {
   var descriptor = Object.getOwnPropertyDescriptor(f, "name");
-  assertTrue(descriptor.configurable);
+  assertFalse(descriptor.configurable);
   assertFalse(descriptor.enumerable);
   assertFalse(descriptor.writable);
 }

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