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Revert "Make 'name' property on functions configurable."

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

Review URL: https://codereview.chromium.org/297163009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21534 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
mstarzinger@chromium.org 2014-05-27 15:00:26 +00:00
parent 6fa616ad73
commit 6b33e50701
4 changed files with 19 additions and 25 deletions
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34
src/bootstrapper.cc
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@ -386,47 +386,45 @@ void Genesis::SetFunctionInstanceDescriptor(
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 @@ void Genesis::SetStrictFunctionInstanceDescriptor(
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 @@ void Genesis::SetStrictFunctionInstanceDescriptor(
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.

3
test/mjsunit/es7/object-observe.js
View File

@ -1142,8 +1142,7 @@ var properties = ["a", "1", 1, "length", "setPrototype", "name", "caller"];
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) {

5
test/mjsunit/regress/regress-1530.js
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@ -62,9 +62,8 @@ assertSame(new f().foo, 'other');
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: {} })");

2
test/mjsunit/regress/regress-270142.js
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@ -39,7 +39,7 @@ function g(x) {
function checkNameDescriptor(f) {
var descriptor = Object.getOwnPropertyDescriptor(f, "name");
assertTrue(descriptor.configurable);
assertFalse(descriptor.configurable);
assertFalse(descriptor.enumerable);
assertFalse(descriptor.writable);
}