|
|
php.net | support | documentation | report a bug | advanced search | search howto | statistics | random bug | login |
[2000-05-02 19:37 UTC] vorlon at netexpress dot net
Under PHP4, registering a shutdown function that contains invalid PHP code (such as a call to a non-existent function) causes the server process to segfault.
Here is a scriptlet which reproduces the problem:
<?
function close_socket() {
close($fd);
}
register_shutdown_function(close_socket);
?>
I stumbled on this quite accidentally--of course, I meant to use fclose() instead of close(). Still, it seems that PHP should handle this better than by causing a segfault. :)
PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
|
|||||||||||||||||||||||||||
Copyright © 2001-2025 The PHP GroupAll rights reserved. |
Last updated: Mon Nov 03 08:00:01 2025 UTC |
I can reproduces this with 4.0.1pl2. Backtrace follows: GNU gdb 4.17.0.11 with Linux support Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-redhat-linux"... (gdb) run -X Starting program: /dat/APACHE-PHP4/apache_1.3.12/src/./httpd -X Program received signal SIGSEGV, Segmentation fault. 0x80f8c85 in _zval_ptr_dtor (zval_ptr=0xbffffaac) at zend_execute_API.c:270 270 (*zval_ptr)->refcount--; (gdb) bt #0 0x80f8c85 in _zval_ptr_dtor (zval_ptr=0xbffffaac) at zend_execute_API.c:270 #1 0x80f8ab2 in shutdown_executor () at zend_execute_API.c:161 #2 0x80fe34d in zend_deactivate () at zend.c:515 #3 0x8088644 in php_request_shutdown (dummy=0x0) at main.c:672 #4 0x8086ba5 in php_apache_request_shutdown (dummy=0x0) at mod_php4.c:291 #5 0x812929e in run_cleanups () #6 0x8127acd in ap_clear_pool () #7 0x8127b41 in ap_destroy_pool () #8 0x8127abc in ap_clear_pool () #9 0x8136f8f in child_main () #10 0x813752c in make_child () #11 0x8137689 in startup_children () #12 0x8137cb6 in standalone_main () #13 0x8138443 in main () #14 0x401f9cb3 in __libc_start_main (main=0x81380fc <main>, argc=2, argv=0xbffffd24, init=0x806d970 <_init>, fini=0x81b720c <_fini>, rtld_fini=0x4000a350 <_dl_fini>, stack_end=0xbffffd1c) at ../sysdeps/generic/libc-start.c:78 (gdb) print zval_ptr $1 = (zval **) 0xbffffaac (gdb) print (*zval_ptr)->refcount Cannot access memory at address 0xa. (gdb) print *zval_ptr $2 = (zval *) 0x0 (gdb) quit