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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/109339] [12/13 Regression] stop_token compiled with
 -Og yields maybe-uninitialized
Date: Fri, 31 Mar 2023 11:58:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109339

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
What is the
      explicit
      _Stop_state_ref(const stop_source&)
      : _M_ptr(new _Stop_state_t())
      { }
there for, can't you use some completely unrelated type there instead (bool,
stop_source*, some enum, whatever), or drop the const at least?
The passing pointer to uninitialized const object or reference to uninitial=
ized
const object to function we don't know anything about is I think one of the
design goals of Martin's change which probably not everybody will agree wit=
h,
but it is true that it can sometimes find bugs in code.=