[Bug c++/58201] [4.9 Regression] Undefined reference to `B::B(void const**)'

[kcc at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58201

--- Comment #4 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
Nice. Any hope? 
Chromium is another project which we can't build with gcc trunk