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From: "jason 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 13:20:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109247

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
No templates (so it's ambiguous, but the problem is the same):

struct B { int a; };
struct C {
  explicit C (int);
  C& operator=3D (B);
  C& operator=3D (const C&);
};
void f(C x)
{
  x =3D { 42 };
}=