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From: "herring at lanl dot gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107906] New: Function template specialization given weak
 rather than local symbol
Date: Tue, 29 Nov 2022 06:44:58 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: herring at lanl dot gov
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107906

            Bug ID: 107906
           Summary: Function template specialization given weak rather
                    than local symbol
           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: ---

Current trunk, given <https://godbolt.org/z/aoMecfhqb>

  template<class> using X=3Dint;
  namespace {
    template<class> using Y=3Dint;
  }

  template<template<class> class Q> void f() {}
  template void f<X>();

  void (*fp)()=3Df<Y>;

emits weak symbols for both specializations of f, despite the fact that a
different "void f<(anonymous namespace)::Y>()" might be defined in another
translation unit (perhaps as an explicit specialization).=