[PATCH] Proposed change to the constructor of std::pair

[Marshall Clow]

More: It's not so much that this is a defect in the standard (the default constructor's requirement that both types must be default constructible is a requirement on the caller, and having them be references, which are not default constructible is clearly an error), but instead an effort to make pair more SFINAE-friendly; to make the default constructor nonexistent instead of a hard error.


http://reviews.llvm.org/D7384

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