The standard omits a description of bitset::operator[], but DR 11 adds the
missing description. It says that operator[] require "pos is valid" and
that it throws "nothing." Stroustrup explicitly states that the subscript
operator throws out_of_range and that "there is no unchecked subscript
operation." I think DR 11 should be explicit about what happens if the bit
position is invalid: either it throws out_of_range or the behavior is
undefined.
--
Ray Lischner, author of C++ in a Nutshell (forthcoming, Q4 2002)
http://www.tempest-sw.com/cpp/

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