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[Bug tree-optimization/21982] GCC should combine adjacent stdio calls
- From: "ghazi at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Jun 2005 16:55:52 -0000
- Subject: [Bug tree-optimization/21982] GCC should combine adjacent stdio calls
- References: <20050609125653.21982.ghazi@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From ghazi at gcc dot gnu dot org 2005-06-09 16:55 -------
(In reply to comment #3)
> Subject: Re: GCC should combine adjacent stdio
> calls
> Another problem case is if the first format has excess arguments (which is
> permitted by ISO C) - those arguments must be evaluated but not included
> in the concatenated argument list.
While it may be legal, our -Wformat option warns about excess arguments and I
would suggest we don't attempt any optimization unless we pass -Wformat
cleanly. So I think this one is surmountable.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21982