Proposed resolution (February, 2012):

Change 7.7 [expr.const] paragraph 2 as follows:

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• an lvalue-to-rvalue conversion (7.3.2 [conv.lval]) unless it is applied to

• a glvalue of integral or enumeration type that refers to a non-volatile const object with a preceding initialization, initialized with a constant expression, or

• a glvalue of literal type that refers to a non-volatile object defined with constexpr, or that refers to a non-mutable sub-object of such an object, or

• a glvalue of literal type that refers to a non-volatile temporary object whose lifetime has not ended, initialized with a constant expression;

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