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From: "egor.pugin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107981] New: 'operator auto' has not been declared in base
Date: Mon, 05 Dec 2022 20:57:38 +0000
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X-Bugzilla-Version: 12.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107981

            Bug ID: 107981
           Summary: 'operator auto' has not been declared in base
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: egor.pugin at gmail dot com
  Target Milestone: ---

struct a {
    operator auto() { return 1; }
};
struct b : a {
    using a::operator auto;
};

gives

<source>:5:23: error: 'operator auto' has not been declared in 'struct a'
    5 |     using a::operator auto;
      |                       ^~~~

Exerything is fine for clang/msvc.

https://godbolt.org/z/cTnxs97r6=