Proposed resolution:

This wording is relative to n4944.

1. Change [iostream.objects.overview]/5 as indicated:

   -5- The results of including <iostream> in a translation unit shall be as if <iostream> defined an instance of ios_base::Init with static storage duration ordered initialization ([basic.start.dynamic]). Each C++ library module ([std.modules]) in a hosted implementation shall behave as if it contains an interface unit that defines an unexported ios_base::Init variable with ordered initialization ([basic.start.dynamic]).

[ 2023-05-24; Reflector poll ]

Set priority to 4 after reflector poll.

LWG 3878 specified the effects of importing standard library modules on initialization. However, the effects of including <iostream> are not yet precisely specified. A hostile reading may consider this to allow the ios_base::Init variable to be a function-local static variable or an inline variable, which defeats the purpose.