Recent libstdc++ regression on i686-linux: abi/cxx_runtime_only_linkage.cc

[Paolo Carlini]

Sebastian Redl wrote:
> Could we simply export __exchange_and_add and __atomic_add from 
> libsupc++ instead of libstdc++? They are pretty basic building blocks 
> in my opinion.
I agree, in principle. However, sorry, I don't feel like doing that, 
it's a non trivial change, because *anything* related to the atomic 
builtins is non-trivial. So... If you volunteer to do that, patches 
welcome, you can count on my to thorough and promptly review and help, 
but if you drop the ball, I will simply enable the C++0x feature on the 
safe subset of platforms, for 4.4.0, at least.

Paolo.