Instead of returning the empty string when indexing
a string out of bounds we now correctly return undefined.
Review URL: http://codereview.chromium.org/542089
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3611
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
CONVERT_CHECKED(String, subject, args[0]);
Object* index = args[1];
- return CharFromCode(CharCodeAt(subject, index));
+ Object* code = CharCodeAt(subject, index);
+ if (code == Heap::nan_value()) {
+ return Heap::undefined_value();
+ }
+ return CharFromCode(code);
}