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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/106072] [13 Regression] Bogus -Wnonnull warning breaks rust
 bootstrap
Date: Wed, 14 Dec 2022 08:51:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106072

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gn=
u.org

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
No, that is not the problem.
The problem is solely in the:
  return AST::ClosureParam (std::move (pattern), pattern->get_locus (),
                            std::move (type), std::move (outer_attrs));
line.
pattern is a unique_ptr, std::move (pattern) will:
      _GLIBCXX23_CONSTEXPR
      __uniq_ptr_impl(__uniq_ptr_impl&& __u) noexcept
      : _M_t(std::move(__u._M_t))
      { __u._M_ptr() =3D nullptr; }
and so once std::move (pattern) is done, pattern is nullptr.  And then it c=
alls
pattern->get_locus (), already on the nullptr.=