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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/92546] Large increase in preprocessed file sizes in
 C++2a mode
Date: Thu, 24 Mar 2022 22:31:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92546

--- Comment #31 from Jonathan Wakely <redi at gcc dot gnu.org> ---
std::construct_at and std::destroy_at are in <bits/stl_construct.h> alongsi=
de
std::_Construct and std::_Destroy. But the latter need iterator category
definitions for destroying sequences. std::construct_at and std::destroy_at
have no dependencies. They could be moved into <bits/move.h> or
<bits/memoryfwd.h> or something smaller. This would benefit <expected> (and
maybe other headers).=