facebook/hiphop-php — pull request #969 by staabm (2013-08-20 08:57:14+00:00)
Title: fixed serialize/unserialize for SplObjectStorage

added error handling for bad serialized strings according to zend tests.
We cannot move the actual tests from "bad" to "good" because ATM they
rely on the internal serialized string format of SplObjectStorage, which
is not yet reimplemented.