[Bug ipa/61659] [4.9/4.10 Regression] Extra undefined symbol because of devirtualization

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61659

--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Well, if I revert Jason's patch it compiles just fine.
gcc-4.9 is also fine. And -fno-devirtualize, too.