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Re: [patch-rfc] N2179: Exception Propagation in C++
> Is __GXX_EXPERIMENTAL_CXX0X__ defined during the compilation
> of libsupc++ itself?
At the moment is not defined, because there are no reasons to do that. Maybe you want to arrange things in such a way that it can be safely defined. For sure, however, when the user normally includes <exception> in its source without afterwards passing -std=c++0x, he doesn't want to see in std:: anything having to do with exception_ptr and more generally the C++0x features specified in N2179...
Paolo.