On 02/06/2013 11:14 PM, Paul Eggert wrote: > In <http://lists.gnu.org/archive/html/bug-gnulib/2013-02/msg00019.html> > on 02/06/2013 12:13 AM, John Darrington wrote: > >> ./SOURCE/gl/xalloc.h:176: error: no previous prototype for 'x2nrealloc' > > I looked into this, and apparently it's a bug in GCC 4.4.5. > The bug causes GCC to generate a bogus warning if one > compiles with '-Wmissing-prototypes' and if a program > contains an inline function that is not static. > > Gnulib's general rule is to cater to GCC non-default compiler warnings > only for the latest stable version of GCC, since older GCCs are > fairly buggy in this area, and it's too much hassle to try > to pacify them all.
Indeed, at least libvirt and coreutils are both using conditional warnings, where certain warnings are only turned on for new-enough gcc. Maybe I should revisit the manywarnings module to hoist that logic up into gnulib, instead of making each downstream project reinvent it. The question has come up in the past, though: https://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00006.html -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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