https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72858
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> --- (In reply to David Malcolm from comment #2) > Author: dmalcolm > Date: Mon Sep 12 16:01:02 2016 > New Revision: 240095 The above commit fixes many of these issues; Martin identified some further improvements here: https://gcc.gnu.org/ml/gcc-patches/2016-08/msg01587.html which I'll quote inline here: On Mon, 2016-08-22 at 15:54 -0600, Martin Sebor wrote: > A couple of things I noticed when getting the -Wformat-length code > to use the new infrastructure from c-format. > > Hints that suggest alternate directives that don't accept all > the same flags as those used in the original should filter out > those flags. For example, when passing a pointer to a "%#lx" > directive, the hint should suggest "%s" for character pointers > and "%p" for others rather than "%#s" or "%#p". Similarly, > when passing a string to a "%+i" or "% i" directive, the '+' > and space flags should be removed. > > Also, with -Wformat-signedness (but I'd say without it as well), > the hints should respect the signedness of the arguments. For > example, the hint for "%u" with a long int argument should be > "%lu" and not "%li". > > Martin Keeping this bug open until these are addressed.
