Bug #2221: PHP3 occasionally crashes on complex script

From: k@les.cz Operating system: Redhat 5.2 (kernel 2.0.36) PHP version: 3.0.12 PHP Bug Type: Reproduceable crash Bug description: PHP3 occasionally crashes on complex script I'm running PHP3 compiled with mysql support as an Apache (1.3.9) module. It sometimes crashes on large scripts containing multiple classes and nested includes and requires. When I recompiled it with -enable-debug and ElectricFence, gdb httpd core says following: (gdb) where #0 0x80e3fec in slotForUserAddress () #1 0x80e40ad in free () #2 0x806b508 in _efree (ptr=0x46ad3fec, filename=0x80e97d7 "php3_hash.c", lineno=677) at alloc.c:173 #3 0x8065e58 in _php3_hash_destroy (ht=0x4592ffcc) at php3_hash.c:677 #4 0x809e6cf in phpparse () at control_structures_inline.h:956 #5 0x8064c6c in php3_parse (yyin=0x40addf98) at main.c:1563 #6 0x8064ed0 in apache_php3_module_main (r=0x40a8c028, fd=21, display_source_mode=0, preprocessed=0) at main.c:1934 #7 0x806220a in send_php3 (r=0x40a8c028, display_source_mode=0, preprocessed=0, filename=0x40a8cbb0 "/home/zeev/webmail/htdocs/curr/message.php3") at mod_php3.c:245 #8 0x806226e in send_parsed_php3 (r=0x40a8c028) at mod_php3.c:261 #9 0x80a881f in ap_invoke_handler (r=0x40a8c028) at http_config.c:508 #10 0x80bb8a9 in process_request_internal (r=0x40a8c028) at http_request.c:1214 #11 0x80bb908 in ap_process_request (r=0x40a8c028) at http_request.c:1230 #12 0x80b3175 in child_main (child_num_arg=2) at http_main.c:4035 #13 0x80b33ac in make_child (s=0x40173028, slot=2, now=936296647) at http_main.c:4194 #14 0x80b345b in startup_children (number_to_start=3) at http_main.c:4221 #15 0x80b3a48 in standalone_main (argc=1, argv=0xbffffd6c) at http_main.c:4509 #16 0x80b429b in main (argc=1, argv=0xbffffd6c) at http_main.c:4830 (gdb)