glibc/elf/tst-dlopen-nodelete-reloc.h

/* Template to produce unique symbols.
   Copyright (C) 2019-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* This template produces a unique symbol definition for an explicit
   template instantiation (without also incorporating a reference),
   and an extern template declaration can be used to reference that
   symbol from another object.  The modid parameter is just a
   placeholder to create different symbols (because it affects the
   name mangling of the static value member).  By convention, it
   should match the number of the module that contains the
   definition.  */

template <int modid>
struct unique_symbol
{
  static int value;
};

template <int modid>
int unique_symbol<modid>::value;