------- Comment #4 from rguenth at gcc dot gnu dot org 2009-05-15 09:17 ------- It is an uninitialized use in an exception handler.
;; basic block 132, loop depth 0, count 0 ;; prev block 131, next block 133 ;; pred: 131 (ab,eh,exec) ;; succ: 135 [100.0%] (fallthru,exec) <L49>: save_filt.2381_159 = [filter_expr] <<<filter object>>>; save_eptr.2380_160 = [exc_ptr_expr] <<<exception object>>>; ivtmp.6668_667 = (long unsigned int) v$D45569$_M_impl$_M_start_645(D); goto <bb 135>; possibly reached from ;; basic block 116, loop depth 0, count 0 ;; prev block 115, next block 117 ;; pred: 115 [100.0%] (fallthru,exec) ;; succ: 131 (ab,eh,exec) 117 [100.0%] (fallthru,exec) <bb 116>: D.141736 = get (&D.141735); [return slot optimization] we could avoid warning for these at all but I am not sure if that would be appreciated. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40156