With vanilla php (rasmus take note please), here's a b/t
from the latest segfaults. Actually looks like possibly the same problem that I reported when the optimiser was enabled. Since this is in vanilla php, I trust that this *is* the right place to report the crash.

Now I understand the use for the apache MaxRequestsPerChild :-)

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(gdb) run -X
Starting program: /usr/local/builds/apache-1.3.12/bin/httpd -X

Program received signal SIGSEGV, Segmentation fault.
0x80f5b39 in php_if_array_reduce (ht=3, return_value=0x8347944, this_ptr=0x0, return_value_used=1) at array.c:2886
2886                    zend_hash_move_forward_ex(Z_ARRVAL_PP(input), &pos);
(gdb) where
#0  0x80f5b39 in php_if_array_reduce (ht=3, return_value=0x8347944, this_ptr=0x0, return_value_used=1) at array.c:2886
#1  0x81067ff in execute (op_array=0x8281858) at ./zend_execute.c:1504
#2  0x81069fd in execute (op_array=0x82815b8) at ./zend_execute.c:1544
#3  0x81069fd in execute (op_array=0x827bcf0) at ./zend_execute.c:1544
#4  0x81069fd in execute (op_array=0x8275bd8) at ./zend_execute.c:1544
#5  0x81069fd in execute (op_array=0x829969c) at ./zend_execute.c:1544
#6  0x81069fd in execute (op_array=0x82988c4) at ./zend_execute.c:1544
#7  0x81069fd in execute (op_array=0x82b846c) at ./zend_execute.c:1544
#8  0x81069fd in execute (op_array=0x82abf9c) at ./zend_execute.c:1544
#9  0x81069fd in execute (op_array=0x82ac0c4) at ./zend_execute.c:1544
#10 0x81069fd in execute (op_array=0x82a2834) at ./zend_execute.c:1544
#11 0x81069fd in execute (op_array=0x82a2d0c) at ./zend_execute.c:1544
#12 0x81069fd in execute (op_array=0x82a4c6c) at ./zend_execute.c:1544
#13 0x81069fd in execute (op_array=0x82ac964) at ./zend_execute.c:1544
#14 0x81069fd in execute (op_array=0x8285a2c) at ./zend_execute.c:1544
#15 0x81069fd in execute (op_array=0x8262934) at ./zend_execute.c:1544
#16 0x80dde0b in zend_execute_scripts (type=8, file_count=3) at zend.c:752
#17 0x806a6fb in php_execute_script (primary_file=0xbffff748) at main.c:1206
#18 0x80eaa1b in apache_php_module_main (r=0x8245fa4, display_source_mode=0) at sapi_apache.c:89
#19 0x8067bee in send_php ()
#20 0x8067c36 in send_parsed_php ()
#21 0x8111609 in ap_invoke_handler ()
#22 0x8126a1f in process_request_internal ()
#23 0x8126a92 in ap_process_request ()
#24 0x811d8a6 in child_main ()
#25 0x811da85 in make_child ()
#26 0x811dc06 in startup_children ()
---Type <return> to continue, or q <return> to quit---
#27 0x811e27d in standalone_main ()
#28 0x811eacc in main ()
#29 0x400c4a5e in __libc_start_main () at ../sysdeps/generic/libc-start.c:93
(gdb)