[util.dynamic.safety]
Change: Minimal support for garbage-collected regions.
Rationale: Required by new feature.
Effect on original feature:
Valid C++ 2003 code, compiled without traceable pointer support,
that interacts with newer C++ code using regions declared reachable may
have different runtime behavior.
[refwrap], [arithmetic.operations], [comparisons],
[logical.operations], [bitwise.operations], [depr.negators]
Change: Standard function object types no longer derived from
std::unary_function or std::binary_function.
Rationale: Superseded by new feature; unary_function and
binary_function are no longer defined.
Effect on original feature:
Valid C++ 2003 code that depends on function object types being derived from
unary_function or binary_function may fail to compile
in this International Standard.