[Bug libstdc++/54314] [4.8 Regression] undefined references to 'construction vtable for std::ostream-in-std::basic_ostringstream, std::allocator >'

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54314



--- Comment #36 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-12 
13:05:52 UTC ---

(In reply to comment #35)

> I am still bit confused how keyed construction vtables are supposed to work. 

> If I understand it right, and there is no C++ ABI mangling for those, I think

> it makes no sense to export them from the unit they are keyed to, since the

> other units can not refer them anyway.



Right.



> So perhaps the construction vtables should be always comdat hidden?



Hmm?  My earlier patch made them hidden, and they were already comdat.  Do you

mean something else?