------- Comment #1 from rguenth at gcc dot gnu dot org 2008-12-31 09:18 ------- The frontend already presents us with
;; Function f (null) ;; enabled by -tree-original { fff (x = 1); return x = 1;, 1{no-warn}; } note that other compilers IMHO correctly do the same for the function argument. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38679