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From: "herring at lanl dot gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106756] New: Overbroad friendship for nested classes
Date: Fri, 26 Aug 2022 15:16:57 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106756

            Bug ID: 106756
           Summary: Overbroad friendship for nested classes
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: herring at lanl dot gov
  Target Milestone: ---

Sometime since 12.2, GCC has started accepting

struct A {
  struct B {
    friend int f(B*) {return i;}
  };
private:
  static int i;
};

despite the express limitation in [class.nest]/4 (/3 in the latest draft).=
=20
(Current Clang also accepts it, but ICC and MSVC do not.)=