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Subject: [Bug libcc1/105695] GCC 10.3.1 (20220519) build failure with GCC 12
Date: Mon, 23 May 2022 08:34:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105695

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> <algorithm> is required pre C++11 for std::swap.

Right, it got moved to <utility> for C++11. GCC 10 uses C++98 so needs
<algorithm> for std::swap.

As noted at https://gcc.gnu.org/gcc-12/porting_to.html both <utility> and
<algorithm> are less widely used inside libstdc++, so you are less likely to
get those headers transitively by including other library headers.=