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[Bug c++/40056] implicit instantiation of function templates fails with -O2, works with -O and -g...
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 08 Mar 2012 14:42:58 +0000
- Subject: [Bug c++/40056] implicit instantiation of function templates fails with -O2, works with -O and -g...
- Auto-submitted: auto-generated
- References: <bug-40056-4@http.gcc.gnu.org/bugzilla/>
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.