http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40056
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-03-08 14:42:58 UTC --- It's not a bug though, since you're expecting behaviour which is not guaranteed and never has been guaranteed. Why does it matter? If you have another file where you suppress implicit instantiation (either by 'extern template' or -fno-implicit-templates) then you are required to provide an explicit instantiation somewhere in the program. Assuming an implicit instantiation will happen is an incorrect.
