http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47901
--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2012-04-23 19:58:15 UTC --- There are plenty of warnings in -Wall that relate to things that are unusual but may be OK in some cases, or where -Wall expects a particular coding style to be used. I think -Wformat-zero-length falls into the category of pointing out something that might be OK but is likely not to be intended. So I think it's fine in -Wall - but if a subset of format checking warnings were enabled by default (as in Ubuntu, for example) then maybe that default subset would not include this one.
