1. 2012-01-11 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs rguenth at gcc dot 2. 2005-05-19 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs schlie at comcast 3. 2005-05-09 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs pinskia at gcc dot 4. 2005-04-30 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs pinskia at gcc dot 5. 2005-04-30 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs roger at eyesopen 6. 2005-04-30 [Bug middle-end/21305] flag_delete_null_pointer_check gcc-bugs pinskia at gcc dot