--TEST-- xdebug_start_trace() without filename --INI-- xdebug.mode=trace xdebug.start_with_request=no xdebug.collect_return=1 xdebug.collect_assignments=0 xdebug.trace_format=0 xdebug.trace_output_name=trace.%c xdebug.use_compression=0 --FILE-- <?php $tf = xdebug_start_trace(); echo $tf, "\n"; xdebug_stop_trace(); unlink($tf); ?> --EXPECTF-- %strace.%d.xt