Richard Smith f8379a0fc3 constexpr: converted constant expression handling for enumerator values, case ...

values and non-type template arguments of integral and enumeration types.

This change causes some legal C++98 code to no longer compile in C++11 mode, by
enforcing the C++11 rule that narrowing integral conversions are not permitted
in the final implicit conversion sequence for the above cases.

llvm-svn: 148439

2012-01-18 23:55:52 +00:00

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