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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/102354] New: std::advance overloaded for
 path::iterator will never be called
Date: Wed, 15 Sep 2021 17:57:47 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102354

            Bug ID: 102354
           Summary: std::advance overloaded for path::iterator will never
                    be called
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

r267057 seems to be implemented incorrectly:

  template<typename _InputIterator, typename _Distance>
    void
    advance(filesystem::path::iterator& __i, _Distance __n)
    { __path_iter_advance(__i, static_cast<ptrdiff_t>(__n)); }


The only way to call this std::advance is to explicitly specify _InputItera=
tor,
for example:

  std::filesystem::path p =3D "/a/b/c/d/e/f/g";
  auto it =3D p.begin();
  std::advance<void>(it, 1);=