here's a backtrace:

#0  0x81aa2cc in swf_openfile ()
#1  0x810e118 in php_if_swf_openfile (ht=7, return_value=0x832b80c, 
    this_ptr=0x0, return_value_used=0) at swf.c:178
#2  0x8154a1d in execute (op_array=0x82d8664) at ./zend_execute.c:1558
#3  0x80b1dfa in php_execute_script (primary_file=0xbffff9a8) at main.c:1157
#4  0x81325e9 in apache_php_module_main (r=0x830f41c, fd=26, 
    display_source_mode=0) at sapi_apache.c:93
#5  0x80af716 in send_php ()
#6  0x80af760 in send_parsed_php ()
#7  0x815f8a3 in ap_invoke_handler ()
#8  0x81761c9 in process_request_internal ()
#9  0x817622c in ap_process_request ()
#10 0x816c559 in child_main ()
#11 0x816c728 in make_child ()
#12 0x816c8b3 in startup_children ()
#13 0x816cf44 in standalone_main ()
#14 0x816d8c3 in main ()

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I can open a file no problem.  Apache only segfaults when i try to use php://stdout.  I couldn't find any documentation about php://stdout except for on the swf_openfile() page, so i'm at a loss here.