[*] control: internalize GOOD key: accepted (expected)
[*] internalize EMPTY key: ACCEPTED  <-- invariant violated if accepted
[+] prop_dictionary_get(dict, "") = 0x8004b0690 (empty keysym interned in tree)
[*] prop_dictionary_externalize() of the empty-key dict
    (externalize asserts pdk_key[0] != 0 -- userland assert/abort,
     kernel INVARIANTS panic)
[*] externalize returned 0x8004e2000
-- externalize of the empty-key dict (second probe, separate binary):
EXTERNALIZED: <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key></key>
	<string>x</string>
</dict>
</plist>