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From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/109247] [13 Regression] optional<T> o; o = {x}; wants to
 use explicit optional(U) constructor since r13-6765-ga226590fefb35ed6
Date: Thu, 23 Mar 2023 13:30:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109247

Patrick Palka <ppalka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ppalka at gcc dot gnu.org
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D84849

--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
PR84849 seems related, especially the comment #5 testcase from ensadc:

template<class>
struct in_place_type_t { explicit in_place_type_t() =3D default; };

struct A { };

int f(A);
int f(in_place_type_t<A>);

int x =3D f({});=