# Segfault when using ext/xml - Thread: https://externals.io/message/2051 - Original archive: https://news-web.php.net/php.internals/2051 - Started by Per Lundberg on 2003-05-28T08:17:27+00:00 - Messages: 3 - Reply by email to internals@lists.php.net - More for agents: search with https://externals.io/search.md?q={query} · JSON API at https://externals.io/api · documentation at https://externals.io/llms.txt --- ## #2051 — Per Lundberg — 2003-05-28T08:17:27+00:00 URL: https://externals.io/message/2051#2051 I get the following segfault when using the XML parser (ext/xml) using the latest PHP5 from CVS: Program received signal SIGSEGV, Segmentation fault. 0x0812e914 in _efree (ptr=0x5a5a5a5a, __zend_filename=0x8178fa0 "/usr/local/src/php-cvs/php5/ext/xml/xml.c", __zend_lineno=183, __zend_orig_filename=0x0, __zend_orig_lineno=0) at /usr/local/src/php-cvs/php5/Zend/zend_alloc.c:253 253 CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size); (gdb) backtrace #0 0x0812e914 in _efree (ptr=0x5a5a5a5a, __zend_filename=0x8178fa0 "/usr/local/src/php-cvs/php5/ext/xml/xml.c", __zend_lineno=183, __zend_orig_filename=0x0, __zend_orig_lineno=0) at /usr/local/src/php-cvs/php5/Zend/zend_alloc.c:253 #1 0x080fcc10 in php_xml_free_wrapper (ptr=0x5a5a5a5a) at /usr/local/src/php-cvs/php5/ext/xml/xml.c:183 #2 0x400b7303 in xmlCharEncCloseFunc () from /usr/lib/libxml2.so.2 #3 0x400d9b75 in xmlFreeParserInputBuffer () from /usr/lib/libxml2.so.2 #4 0x400bad9d in xmlFreeInputStream () from /usr/lib/libxml2.so.2 #5 0x400bb6fd in xmlFreeParserCtxt () from /usr/lib/libxml2.so.2 #6 0x08101036 in XML_ParserFree (parser=0x820da14) at /usr/local/src/php-cvs/php5/ext/xml/compat.c:574 #7 0x080fd10e in xml_parser_dtor (rsrc=0x8403554) at /usr/local/src/php-cvs/php5/ext/xml/xml.c:325 #8 0x0814a84f in list_entry_destructor (ptr=0x8403554) at /usr/local/src/php-cvs/php5/Zend/zend_list.c:178 #9 0x08148d07 in zend_hash_apply_deleter (ht=0x81ad3a0, p=0x84034fc) at /usr/local/src/php-cvs/php5/Zend/zend_hash.c:565 #10 0x08148f2c in zend_hash_graceful_reverse_destroy (ht=0x81ad3a0) at /usr/local/src/php-cvs/php5/Zend/zend_hash.c:631 #11 0x0814a98f in zend_destroy_rsrc_list (ht=0x81ad3a0) at /usr/local/src/php-cvs/php5/Zend/zend_list.c:234 #12 0x081385ef in shutdown_executor () at /usr/local/src/php-cvs/php5/Zend/zend_execute_API.c:265 #13 0x08142a43 in zend_deactivate () at /usr/local/src/php-cvs/php5/Zend/zend.c:781 #14 0x0810ae53 in php_request_shutdown (dummy=0x0) at /usr/local/src/php-cvs/php5/main/main.c:1174 #15 0x081616ac in main (argc=3, argv=0xbffffac4) at /usr/local/src/php-cvs/php5/sapi/cli/php_cli.c:1013 (gdb) print p->size Cannot access memory at address 0x5a5a5a36 My libxml2 is version 2.5.6-2 (Debian precompiled package). I have included a little script that will trigger the error. It only seems to occur when the start and end tag handlers are in a class -- so perhaps OO support in PHP should be dropped altogether. :-) Anyone has any ideas? -- Best regards, Per Lundberg / Capio ApS Phone: +46-18-4186040 Fax: +46-18-4186049 Web: http://www.nobolt.com --- ## #2057 — Per Lundberg — 2003-05-28T13:15:32+00:00 URL: https://externals.io/message/2051#2057 > cannot find the OO PHP script. Did you attach it? Sorry. I'm obviously doing too many things at one time. Here it is, attached to this email. -- Best regards, Per Lundberg / Capio ApS Phone: +46-18-4186040 Fax: +46-18-4186049 Web: http://www.nobolt.com --- ## #2074 — Adam Dickmeiss — 2003-05-28T23:14:49+00:00 URL: https://externals.io/message/2051#2074 · In reply to: #2057 > > > […] > > Sorry. I'm obviously doing too many things at one time. Here it is, > attached to this email. I see the almost same error and that is using and old version of libxml2. In fact the error occurs even if ext/xml is configured to use expat ('--with-libexpat-dir=/usr'). So, probably not an error in compat.c. Maybe zend or xml.c. I recommend you enter a bug report. -- Adam > -- > Best regards, > > Per Lundberg / Capio ApS > Phone: +46-18-4186040 > Fax: +46-18-4186049 > Web: http://www.nobolt.com -- Adam Dickmeiss mailto:adam@indexdata.dk http://www.indexdata.dk Index Data T: +45 33410100 Mob.: 212 212 66