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[2003-07-15 04:15 UTC] fujimura at wakhok dot ac dot jp
Description:
------------
The following code crashes(segmentation fault, and empty output) at a whim.
But it does not reproduce when php invoked as CLI.
Reproduce code:
---------------
<?php
class MyHandler {
public function test($parser, $data) {
print $data;
}
}
$parser = xml_parser_create();
$parser AND die;
$handler = new MyHandler();
xml_set_default_handler($parser, array($handler, "test"));
xml_parser_free($parser);
?>
Expected result:
----------------
Nothing.
Actual result:
--------------
SIGSEGV logged to error_log.
PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Tue Jul 01 23:01:35 2025 UTC |
> Backtrace is useless as long as you don't have > --enable-debug in your configure line. Okay, I rebuilt PHP with --enable-debug, but this bug did not reproduce. And next, I did again without --enable-debug, this bug reproduced. I have discovered that set_exception_handler() causes this one too. <?php set_exception_handler("test_func"); function test_func($exception) { var_dump($exception); exit; } throw new Exception(); print "A"; ?> I cannot understand. The debug codes of Zend causes with this? What can I do? > Also include the full configure line you used. ./configure \ --with-apxs=/usr/local/apache/bin/apxs \ --disable-short-tags \ --enable-versioning \ --enable-mbstring \ --enable-mbregex \ --enable-dom \ --with-iconv \ --with-xsl \ --with-openssl \ --with-zlib \ --with-bz2 ...and --enable-debugThe second script crashes much earlier: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 1024 (runnable)] 0x40425fde in zend_hash_add_or_update (ht=0x80ded04, arKey=0x80ded24 "\\sA@", nKeyLength=7, pData=0x0, nDataSize=4, pDest=0xbfffcd54, flag=1) at /usr/src/web/php/php5/Zend/zend_hash.c:238 238 INIT_DATA(ht, p, pData, nDataSize); (gdb) bt #0 0x40425fde in zend_hash_add_or_update (ht=0x80ded04, arKey=0x80ded24 "\\sA@", nKeyLength=7, pData=0x0, nDataSize=4, pDest=0xbfffcd54, flag=1) at /usr/src/web/php/php5/Zend/zend_hash.c:238 #1 0x404271f4 in zend_hash_copy (target=0x80ded04, source=0x80de7e4, pCopyConstructor=0x4041fce4 <zval_add_ref>, tmp=0xbfffcda4, size=4) at /usr/src/web/php/php5/Zend/zend_hash.c:750 #2 0x4041fde6 in _zval_copy_ctor (zvalue=0x80f160c) at /usr/src/web/php/php5/Zend/zend_variables.c:124 #3 0x4042b068 in zif_set_exception_handler (ht=1, return_value=0x80f160c, this_ptr=0x0, return_value_used=0) at /usr/src/web/php/php5/Zend/zend_builtin_functions.c:1017 #4 0x40451d4f in zend_do_fcall_common_helper (execute_data=0xbfffcf5c, op_array=0x80ea62c) at /usr/src/web/php/php5/Zend/zend_execute.c:2634 #5 0x404523f4 in zend_do_fcall_handler (execute_data=0xbfffcf5c, op_array=0x80ea62c) at /usr/src/web/php/php5/Zend/zend_execute.c:2763 #6 0x4043a7ee in execute (op_array=0x80ea62c) at /usr/src/web/php/php5/Zend/zend_execute.c:1194 #7 0x4042190f in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/src/web/php/php5/Zend/zend.c:1017 #8 0x403ef2c5 in php_execute_script (primary_file=0xbffff288) at /usr/src/web/php/php5/main/main.c:1695 #9 0x4045c07e in apache_php_module_main (r=0x81bf684, display_source_mode=0) at /usr/src/web/php/php5/sapi/apache/sapi_apache.c:54 #10 0x4045cd00 in send_php (r=0x81bf684, display_source_mode=0, filename=0x0) at /usr/src/web/php/php5/sapi/apache/mod_php5.c:621 #11 0x4045cd6a in send_parsed_php (r=0x81bf684) at /usr/src/web/php/php5/sapi/apache/mod_php5.c:636 #12 0x8054f09 in ap_invoke_handler () #13 0x806b0cf in process_request_internal () #14 0x806b13a in ap_process_request () #15 0x8061916 in child_main () #16 0x8061af5 in make_child () #17 0x8061c76 in startup_children () #18 0x806230d in standalone_main () #19 0x8062b9c in main () #20 0x4016c9cb in __libc_start_main (main=0x80627d8 <main>, argc=3, argv=0xbffff6b4, init=0x804ed2c <_init>, fini=0x8082e64 <_fini>, rtld_fini=0x4000aea0 <_dl_fini>, stack_end=0xbffff6ac) at ../sysdeps/generic/libc-start.c:92