elf/tst-dlopen-nodelete-reloc.h

   1 /* Template to produce unique symbols.
   2    Copyright (C) 2019-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* This template produces a unique symbol definition for an explicit
  20    template instantiation (without also incorporating a reference),
  21    and an extern template declaration can be used to reference that
  22    symbol from another object.  The modid parameter is just a
  23    placeholder to create different symbols (because it affects the
  24    name mangling of the static value member).  By convention, it
  25    should match the number of the module that contains the
  26    definition.  */
  27
  28 template <int modid>
  29 struct unique_symbol
  30 {
  31   static int value;
  32 };
  33
  34 template <int modid>
  35 int unique_symbol<modid>::value;