gold/testsuite/plugin_common_test_2.c

/* plugin_common_test_2.c -- test common symbol handling in plugins

   Copyright (C) 2010-2021 Free Software Foundation, Inc.
   Written by Cary Coutant <ccoutant@google.com>

   This file is part of gold.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.

   This is a test of common symbols in plugin objects.  C1-C5 test
   various combinations of tentative definitions, extern declarations,
   and definitions.  */

#include <assert.h>

int c1 __attribute__((aligned (8)));
extern int c2;
int c3;
int c4 = 40;
int c5;

extern void foo (void);

void
foo (void)
{
  c1 = 10;
  c2 = 20;
  c3 = 30;

  assert (c5 == 50);
}