Description:
------------
Everytime I use the soapclient::__getTypes() on a SOAP Client object I get a segfault. I've tried different WSDLs. A simple example Script is attached.
Build environment: Linux 2.6.2, glibc 2.3.2, gcc 3.2.3, libxml2 2.6.3

configure line:
./configure --disable-all \
            --enable-soap \
            --prefix=/opt/php5/bin \
            --with-config-file-path=/opt/php5/etc \
            --disable-cli


Reproduce code:
---------------
<?php
$soap = new soapclient('http://helena.europe.webmatrixhosting.net/Morse.asmx?WSDL');
$soap->__getTypes();
?>


Expected result:
----------------
no output

Actual result:
--------------
$ gdb /opt/php5/bin/php
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This GDB was configured as "i686-pc-linux-gnu"...
(gdb) run soap.php
Starting program: /opt/php5/bin/php soap.php

Program received signal SIGSEGV, Segmentation fault.
0x080a96db in type_to_string (type=0x40351cb4, buf=0xbfffce40, level=0)
    at /home/johannes/src/php-5.0.0b4/ext/soap/soap.c:3264
3264                    smart_str_appendl(buf, ";\n", 2);
(gdb) bt
#0  0x080a96db in type_to_string (type=0x40351cb4, buf=0xbfffce40, level=0)
    at /home/johannes/src/php-5.0.0b4/ext/soap/soap.c:3264
#1  0x080a4535 in zif_soapclient___gettypes (ht=0, return_value=0x40351894,
    this_ptr=0x0, return_value_used=0)
    at /home/johannes/src/php-5.0.0b4/ext/soap/soap.c:2046
#2  0x081dafb0 in zend_do_fcall_common_helper (execute_data=0xbfffcfd0,
    opline=0x4035179c, op_array=0x4035133c)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:2642
#3  0x081db093 in zend_do_fcall_by_name_handler (execute_data=0x40354094,
    opline=0x0, op_array=0x0)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:2753
#4  0x081d7468 in execute (op_array=0x4035133c)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:1339
#5  0x081b937e in zend_execute_scripts (type=8, retval=0x0, file_count=3)
    at /home/johannes/src/php-5.0.0b4/Zend/zend.c:1052
#6  0x0818241e in php_execute_script (primary_file=0xbffff3a0)
    at /home/johannes/src/php-5.0.0b4/main/main.c:1647
#7  0x081e2c32 in main (argc=2, argv=0xbffff424)
    at /home/johannes/src/php-5.0.0b4/sapi/cli/php_cli.c:941
#8  0x4022bd6b in __libc_start_main () from /lib/libc.so.6
(gdb)
#0  0x080a96db in type_to_string (type=0x40351cb4, buf=0xbfffce40, level=0)
    at /home/johannes/src/php-5.0.0b4/ext/soap/soap.c:3264
#1  0x080a4535 in zif_soapclient___gettypes (ht=0, return_value=0x40351894,
    this_ptr=0x0, return_value_used=0)
    at /home/johannes/src/php-5.0.0b4/ext/soap/soap.c:2046
#2  0x081dafb0 in zend_do_fcall_common_helper (execute_data=0xbfffcfd0,
    opline=0x4035179c, op_array=0x4035133c)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:2642
#3  0x081db093 in zend_do_fcall_by_name_handler (execute_data=0x40354094,
    opline=0x0, op_array=0x0)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:2753
#4  0x081d7468 in execute (op_array=0x4035133c)
    at /home/johannes/src/php-5.0.0b4/Zend/zend_execute.c:1339
#5  0x081b937e in zend_execute_scripts (type=8, retval=0x0, file_count=3)
    at /home/johannes/src/php-5.0.0b4/Zend/zend.c:1052
#6  0x0818241e in php_execute_script (primary_file=0xbffff3a0)
    at /home/johannes/src/php-5.0.0b4/main/main.c:1647
#7  0x081e2c32 in main (argc=2, argv=0xbffff424)
    at /home/johannes/src/php-5.0.0b4/sapi/cli/php_cli.c:941
#8  0x4022bd6b in __libc_start_main () from /lib/libc.so.6