[Bug fortran/54224] [4.8 Regression] Bogus -Wunused-function warning with static function

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54224

--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-09-15 
17:47:37 UTC ---
(In reply to comment #7)
> Here is a patch which should set TREE_USED for all procedure calls:

Does it still allow to optimize unused PRIVATE module procedures away?