[Bug c++/7313] variable declared but not defined with "C" linkage placed in enclosing namespace at link time

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7313

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-02 
01:33:46 UTC ---
I disagree this is ill-formed, and I think G++ does the right thing