Hi, all!
This script (you need to compile PHP with --enable-memory-limit first):
<?
ini_set("memory_limit",0);
phpinfo();
?>
produces for me segfault with last HEAD and PHP_4_3 branch.
Backtrace:
Program received signal SIGSEGV, Segmentation fault.
_efree (ptr=0x0) at /root/CVS/php-src/Zend/zend_alloc.c:257
257 CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(gdb) bt
#0 _efree (ptr=0x0) at /root/CVS/php-src/Zend/zend_alloc.c:257
#1 0x4035268b in php_end_ob_buffer (send_buffer=1 '\001', just_flush=0 '\0') at /root/CVS/php-src/main/output.c:315
#2 0x40352a80 in php_end_ob_buffers (send_buffer=0 '\0') at /root/CVS/php-src/main/output.c:339
#3 0x40345e77 in php_request_shutdown (dummy=0x0) at /root/CVS/php-src/main/main.c:1204
#4 0x403a0f7f in apache_php_module_main (r=0x8185cbc, display_source_mode=0)
at /root/CVS/php-src/sapi/apache/sapi_apache.c:60
#5 0x403a1b0b in send_php (r=0x8185cbc, display_source_mode=0, filename=0x0)
at /root/CVS/php-src/sapi/apache/mod_php5.c:621
#6 0x403a1cd5 in send_parsed_php (r=0x8185cbc) at /root/CVS/php-src/sapi/apache/mod_php5.c:636
#7 0x08068eee in ap_invoke_handler ()
#8 0x0807e83e in process_request_internal ()
#9 0x0807ec74 in ap_internal_redirect ()
#10 0x0805e39a in handle_dir ()
#11 0x08068eee in ap_invoke_handler ()
#12 0x0807e83e in process_request_internal ()
#13 0x0807e89b in ap_process_request ()
#14 0x0807535f in child_main ()
#15 0x08075511 in make_child ()
#16 0x08075690 in startup_children ()
#17 0x08075d00 in standalone_main ()
#18 0x0807659a in main ()
#19 0x400d1af7 in __libc_start_main () from /lib/i686/libc.so.6
I can propose a patch, see attachment.
Dunno is this patch optimal or not, but it works for me.
WBR,
Antony Dovgal aka tony2001
tony2001@phpclub.net
The memory manager will deliberately segfault if an allocation fails in a debug
build.
Having said that, your patch seems ok anyway.
--Wez.
Hi, all!
This script (you need to compile PHP with --enable-memory-limit first):
<?
ini_set("memory_limit",0);
phpinfo();
?>
produces for me segfault with last HEAD and PHP_4_3 branch.Backtrace:
Program received signal SIGSEGV, Segmentation fault.
_efree (ptr=0x0) at /root/CVS/php-src/Zend/zend_alloc.c:257
257 CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(gdb) bt
#0 _efree (ptr=0x0) at /root/CVS/php-src/Zend/zend_alloc.c:257
On Wed, 24 Sep 2003 20:18:28 +0100 (BST)
Wez Furlong wez@thebrainroom.com wrote:
The memory manager will deliberately segfault if an allocation fails in a debug
build.Having said that, your patch seems ok anyway.
hmmm.. patch is ok, but still not commited =\
WBR,
Antony Dovgal aka tony2001
tony2001@phpclub.net