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

[Paolo Carlini]

Peter Dimov wrote:
> The problem, from the point of view of a library such as 
> boost::shared_ptr, is that there is no way to distinguish between user 
> A, who just types g++ foo.cpp and expects to get a program that works 
> well on a typical machine, and user B, who types g++ -march=i386 
> foo.cpp, with the explicit intent to run the result on a 386.
Maybe "no way" is a tad too strong: now we have 
|__GCC_HAVE_SYNC_COMPARE_AND_SWAP_? and more could be added...

Paolo.
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