http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56373
--- Comment #4 from Akim Demaille <akim.demaille at gmail dot com> 2013-02-18 13:23:08 UTC --- > If you're smart enough to know the object isn't used then don't create it :) :) :) :) > ~shared_ptr() has non-trivial side-effects, the compiler isn't smart enough to > determine they won't fire when its empty, so it's always meaningful. I had in mind providing the library authors with an attribute that would help them influence this diagnostic.
