I am running apache 1.3.24/PHP 4.2.1 on Solaris 2.7 (with
recent OS patches applied.)

When I call session_encode() as follows I get the 
segmentation fault error below...

$session_array = explode(";", session_encode());

Following is backtrace ...

[bash-2.03# gdb /usr/local/apache/bin/httpd
GNU gdb 4.18
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This GDB was configured as "sparc-sun-solaris2.7"...
(gdb) run -X
Starting program: /usr/local/apache/bin/httpd -X
[New LWP    2        ]
[New LWP    3        ]
[New LWP    4        ]

Program received signal SIGSEGV, Segmentation fault.
0xfe5ec8c4 in _zval_dtor (zvalue=0x1586b0, __zend_filename=0xfe75c060
"zend_execute_API.c", 
    __zend_lineno=274) at zend_variables.c:43
43                              CHECK_ZVAL_STRING_REL(zvalue);
(gdb) bt
#0  0xfe5ec8c4 in _zval_dtor (zvalue=0x1586b0, 
    __zend_filename=0xfe75c060 "zend_execute_API.c", __zend_lineno=274)
    at zend_variables.c:43
#1  0xfe5dde08 in _zval_ptr_dtor (zval_ptr=0xfe7aac78, 
    __zend_filename=0xfe75ba90 "zend_execute_locks.h",
__zend_lineno=26)
    at zend_execute_API.c:274
#2  0xfe5db0d8 in zend_clean_garbage () at zend_execute_locks.h:26
#3  0xfe5d2b8c in execute (op_array=0x1436e8) at ./zend_execute.c:1056
#4  0xfe5d933c in execute (op_array=0x13de78) at ./zend_execute.c:2141
#5  0xfe5ef554 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at zend.c:810
#6  0xfe60b958 in php_execute_script (primary_file=0xffbeecb0) at
main.c:1381
#7  0xfe603b94 in apache_php_module_main (r=0x131558,
display_source_mode=0)
    at sapi_apache.c:90
#8  0xfe605170 in send_php (r=0x131558, display_source_mode=0, 
    filename=0x132078 "/home/httpd/html/dbiflex/sm/login.php") at
mod_php4.c:575
#9  0xfe6051e8 in send_parsed_php (r=0x131558) at mod_php4.c:590
#10 0x41620 in ap_invoke_handler () from /lib/libaio.so.1
#11 0x5fd04 in process_request_internal () from /lib/libaio.so.1
#12 0x5fd88 in ap_process_request () from /lib/libaio.so.1
#13 0x52f74 in child_main () from /lib/libaio.so.1
#14 0x53208 in make_child () from /lib/libaio.so.1
#15 0x53424 in startup_children () from /lib/libaio.so.1
#16 0x53e58 in standalone_main () from /lib/libaio.so.1
#17 0x54aa0 in main () from /lib/libaio.so.1
(gdb) frame 3
#3  0xfe5d2b8c in execute (op_array=0x1436e8) at ./zend_execute.c:1056
1056                    zend_clean_garbage(TSRMLS_C);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$1 = 0x0
(gdb) print (char *)executor_globals.active_op_array->function_name
$2 = 0x0
(gdb) print (char *)executor_globals.active_op_array->filename
$3 = 0x14a970
"/home/nmsuser/dbiflex/docroot/common/page_login_header.inc"
(gdb) quit
The program is running.  Exit anyway? (y or n) y

--------------------
Here is the line that is causing the seg fault:

error_log( "{common/page_login_header.inc session_encode: " .
session_encode() );