#27884 [Fbk->Opn]: Segfault on overloading

ID: 27884 User updated by: s dot dehaan at lobbes dot biz Reported By: s dot dehaan at lobbes dot biz -Status: Feedback +Status: Open Bug Type: Class/Object related Operating System: Linux debian 2.2.20-idepci PHP Version: 4.3.6RC1 New Comment: I am unable to recreate the bug so I think it's fixed! Thanks! I ran the test using CLI php -n & no extensions loaded in php.ini Thanks again. Previous Comments: ------------------------------------------------------------------------ [2004-04-07 05:09:36] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip And make SURE you don't have ANY extensions (php or zend) loaded in you php.ini (try running the script with CLI binary, e.g. # php -n test.php ) ------------------------------------------------------------------------ [2004-04-06 07:17:54] s dot dehaan at lobbes dot biz No, it's just the default PHP installation from http://snaps.php.net, php_info() says it's 4.3.6RC3-dev but i've seen this bug since i upgraded to 4.3.5 from 4.3.4. Here's my installation config: './configure' '--with-apxs2=/usr/local/apache2/bin/apxs' '--disable-cgi' '--enable-safe-mode' '--with-openssl' '--with-pear' '--with-zlib' '--enable-bcmath' '--enable-calendar' '--with-curl=/usr/local/curl' '--enable-dba' '--enable-dbase' '--with-dom=/usr/local' '--with-dom-xslt=/usr/local' '--with-dom-exslt=/usr/local' '--enable-ftp' '--with-gd' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-ttf=/usr' '--enable-gd-native-ttf' '--with-mcrypt' '--with-mhash' '--with-mysql' '--enable-wddx' '--enable-xslt' '--with-xslt-sablot=/usr/local' '--enable-exif' '--with-freetype-dir=/usr/local' '--with-xmlrpc' '--with-gettext' '--with-imap=../imap-2002e' '--enable-shmop' '--enable-debug' ------------------------------------------------------------------------ [2004-04-06 06:25:42] alan_k@php.net Do you have the zend optimizer running?? = there are known problems with this. ------------------------------------------------------------------------ [2004-04-06 05:39:41] s dot dehaan at lobbes dot biz The warning PHP prints is the following: Warning: String is not zero-terminated (ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ„̏*
) (source: /root/source/php4-STABLE-200404060830/Zend/zend_execute.c:341) ------------------------------------------------------------------------ [2004-04-06 05:33:13] s dot dehaan at lobbes dot biz Description: ------------ Overloading a class called 'Configuration' tends to segfault on 4.3.5, 4.3.6RC1 & 4.3.6RC3 (snaps.php.net). Reproduce code: --------------- class Configuration { var $elem = Array(); function elements() { return $this->elem; } function __get($prop_name, &$prop_value) { if(isset($this->elem[$prop_name])) { $prop_value = $this->elem[$prop_name]; return true; } else { return false; } } function __set($prop_name, $prop_value) { $this->elem[$prop_name] = $prop_value; return true; } } overload('Configuration'); $_CONFIG->db_type = 'mysql'; $_CONFIG->db_host = 'localhost'; $_CONFIG->db_user = 'user'; $_CONFIG->db_password = 'passwd'; $_CONFIG->db_name = 'database'; cause's segfault & abnormal termination of script. Expected result: ---------------- No output, just storing the called fields in an array & being able to fetch those values in the same manner as i've stored them using overloading. Actual result: -------------- (gdb) bt #0 0x401c09c7 in memcpy () from /lib/libc.so.6 #1 0x404886cf in _mem_block_check (ptr=0xbfffb21c, silent=0, __zend_filename=0x4054bac0 "/root/source/php4-STABLE-200404060830/Zend/zend_execute.h", __zend_lineno=44, __zend_orig_filename=0x0, __zend_orig_lineno=0) at /root/source/php4-STABLE-200404060830/Zend/zend_alloc.c:675 #2 0x40488691 in _mem_block_check (ptr=0xbfffb21c, silent=1, __zend_filename=0x4054bac0 "/root/source/php4-STABLE-200404060830/Zend/zend_execute.h", __zend_lineno=44, __zend_orig_filename=0x0, __zend_orig_lineno=0) at /root/source/php4-STABLE-200404060830/Zend/zend_alloc.c:667 #3 0x40487847 in _efree (ptr=0xbfffb21c, __zend_filename=0x4054bac0 "/root/source/php4-STABLE-200404060830/Zend/zend_execute.h", __zend_lineno=44, __zend_orig_filename=0x0, __zend_orig_lineno=0) at /root/source/php4-STABLE-200404060830/Zend/zend_alloc.c:243 #4 0x40492522 in safe_free_zval_ptr (p=0xbfffb21c) at zend_execute.h:44 #5 0x40490a96 in _zval_ptr_dtor (zval_ptr=0x828a4d0, __zend_filename=0x4054c400 "/root/source/php4-STABLE-200404060830/Zend/zend_variables.c", __zend_lineno=167) at /root/source/php4-STABLE-200404060830/Zend/zend_execute_API.c:292 #6 0x4049a811 in _zval_ptr_dtor_wrapper (zval_ptr=0x828a4d0) at /root/source/php4-STABLE-200404060830/Zend/zend_variables.c:167 #7 0x404a281d in zend_hash_destroy (ht=0x82313e4) at /root/source/php4-STABLE-200404060830/Zend/zend_hash.c:553 #8 0x40491b47 in call_user_function_ex (function_table=0xbfffab98, object_pp=0xbfffac30, function_name=0xbfffab60, retval_ptr_ptr=0xbfffab4c, param_count=2, params=0xbfffab50, no_separation=0, symbol_table=0x0) at /root/source/php4-STABLE-200404060830/Zend/zend_execute_API.c:569 #9 0x4038c92f in call_set_handler (object=0x8292214, prop_name=0x8292680, value=0xbfffb21c) at /root/source/php4-STABLE-200404060830/ext/overload/overload.c:307 #10 0x4038cfd6 in overload_set_property (property_reference=0xbfffb1d4, value=0xbfffb21c) at /root/source/php4-STABLE-200404060830/ext/overload/overload.c:468 #11 0x404acb11 in set_overloaded_property (T=0xbfffb1c8, value=0xbfffb21c) at /root/source/php4-STABLE-200404060830/Zend/zend_execute.c:977 #12 0x404b455b in zend_assign_to_variable (result=0x820f8f8, op1=0x820f908, op2=0x820f918, value=0xbfffb21c, type=2, Ts=0xbfffad4c) at /root/source/php4-STABLE-200404060830/Zend/zend_execute.c:338 #13 0x404aecd2 in execute (op_array=0x8332fcc) at /root/source/php4-STABLE-200404060830/Zend/zend_execute.c:1378 #14 0x404b2157 in execute (op_array=0x82928f4) at /root/source/php4-STABLE-200404060830/Zend/zend_execute.c:2200 #15 0x4049c3f0 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /root/source/php4-STABLE-200404060830/Zend/zend.c:889 #16 0x40460ec9 in php_execute_script (primary_file=0xbffff8d0) at /root/source/php4-STABLE-200404060830/main/main.c:1731 #17 0x404b6727 in php_handler (r=0x823c148) at /root/source/php4-STABLE-200404060830/sapi/apache2handler/sapi_apache2.c:561 #18 0x08082439 in ap_run_handler (r=0x823c148) at config.c:194 #19 0x08082983 in ap_invoke_handler (r=0x823c148) at config.c:401 #20 0x0806c633 in ap_internal_redirect ( new_uri=0x823c0f8 "/thimbletoys_com/application/category/browse.php?c=17&p=&n=Cooking/Kochen", r=0x81c9e78) at http_request.c:498 #21 0x0807bd4b in handler_redirect (r=0x81c9e78) at mod_rewrite.c:1729 #22 0x08082439 in ap_run_handler (r=0x81c9e78) at config.c:194 #23 0x08082983 in ap_invoke_handler (r=0x81c9e78) at config.c:401 #24 0x0806c126 in ap_process_request (r=0x81c9e78) at http_request.c:288 #25 0x0806819a in ap_process_http_connection (c=0x81bb658) at http_core.c:293 #26 0x0808b518 in ap_run_process_connection (c=0x81bb658) at connection.c:85 #27 0x0808b7bc in ap_process_connection (c=0x81bb658, csd=0x81bb580) at connection.c:211 #28 0x08081110 in child_main (child_num_arg=0) at prefork.c:694 #29 0x080811cc in make_child (s=0x80c0770, slot=0) at prefork.c:734 #30 0x080812c1 in startup_children (number_to_start=5) at prefork.c:806 #31 0x080815bc in ap_mpm_run (_pconf=0x80bde98, plog=0x80f5f78, s=0x80c0770) at prefork.c:1022 #32 0x08086c4e in main (argc=2, argv=0xbffffda4) at main.c:660 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27884&edit=1