Description:
------------
perhaps related to bug # 27994 and 29109?

all wsdl urls seem to work on first access. For some, 
the second access causes a memory error: browser returns 
nothing, but the error log contains:

FATAL:  emalloc():  Unable to allocate -2080374783 bytes

but other wsdl urls work fine all the time.  

for example, http://services.xmethods.net/soap/urn:
xmethods-delayed-quotes.wsdl works fine, but this one 
(which is the one I'm interested in!) causes the error:

http://isisdev1.tig.ucla.edu/iws/v4.asmx?WSDL

The only difference I can see is the size of the wsdl 
cache file:

 ls -la /tmp/wsdl* 
-rw-r--r--    1 www-data www-data      655 Jul 17 18:45 
/tmp/wsdl-1d3ed057f34bf52d1ef18dd2d2cf17b0
-rw-r--r--    1 www-data www-data    11616 Jul 17 18:45 
/tmp/wsdl-7a407628dfa2fa2c7282f12e23774f98

If I remove the big one, then the code below works 
again, but only once.


Reproduce code:
---------------
<?
$endpoint="http://isisdev1.tig.ucla.edu/iws/v4.asmx?WSDL";

$client = new SoapClient($endpoint);

echo "<pre>";
var_dump($client->__getFunctions()); 
echo "</pre>";

?>

Expected result:
----------------
On first run, when there's no wsdl cache file, I get the 
expected list of functions.

Actual result:
--------------
no browser output

emalloc error recorded in log file.