Reviewers: Jakob,
Description:
Add undefined check for default Array map in ArrayCodeGenericCommon
[email protected]
BUG=
TEST=
Please review this at https://chromiumcodereview.appspot.com/9290064/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/builtins.cc
Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index
4bb451cadedf6c8a0f9274e60b07610908697911..12c4c74918ca067f011d38a48b56d0fc72892443
100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -198,8 +198,9 @@ static MaybeObject* ArrayCodeGenericCommon(Arguments*
args,
array->set_length(Smi::FromInt(0));
array->set_elements(heap->empty_fixed_array());
if (!FLAG_smi_only_arrays) {
- if (array->GetElementsKind() == FAST_SMI_ONLY_ELEMENTS) {
- Context* global_context = isolate->context()->global_context();
+ Context* global_context = isolate->context()->global_context();
+ if (array->GetElementsKind() == FAST_SMI_ONLY_ELEMENTS &&
+ !global_context->object_js_array_map()->IsUndefined()) {
array->set_map(Map::cast(global_context->object_js_array_map()));
}
}
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