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Showing content from https://github.com/cplusplus/nbballot/issues/176 below:

CA178 17.11.07 [cmp.alg] Special-case std::strong/weak/partial_order for pointers LWG 3324 · Issue #176 · cplusplus/nbballot · GitHub

std::strong_order, weak_order, and partial_order have special cases for floating point, but are missing special casing for pointers (whereas compare_three_way and std::less have the special casing for pointers)

Proposed change:

1. Change [cmp.alg] bullet 1.4 from
   "Otherwise, strong_ordering(E <=> F) if it is a well-formed expression."
   to
   "Otherwise, strong_ordering(compare_three_way()(E, F)) if it is a well-formed expression."

2. Change [cmp.alg] bullet 2.4 from
   "Otherwise, weak_ordering(E <=> F) if it
   is a well-formed expression."
   to
   "Otherwise, weak_ordering(compare_three_way()(E, F)) if it is a well-formed expression."

3. Change [cmp.alg] bullet 3.3 from
   "Otherwise, partial_ordering(E <=> F) if
   it is a well-formed expression."
   to
   "Otherwise, partial_ordering(compare_three_way()(E, F)) if it is a well-formed expression."

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