Proposed resolution:

Add a note to [time.clock.system], p2:

-2- system_clock::duration::min() < system_clock::duration::zero() shall be true. [Note: system_clock::rep shall be signed. -- end note].

[ Batavia (2009-05): ]

We agree with the direction of the proposed resolution. Move to NAD Editorial.

[ Howard adds: ]

This note refers to:

-2- system_clock::duration::min() < system_clock::duration::zero() shall be true.

I.e. this is standardeze for "system_clock::rep is signed". Perhaps an editorial note along the lines of:

-2- system_clock::duration::min() < system_clock::duration::zero() shall be true. [Note: system_clock::rep shall be signed. -- end note].

?

In [time.clock.system], the declaration of system_clock::rep says "see below", but there is nothing below that describes it.