1// icf_safe_so_test.cc -- a test case for gold 2 3// Copyright (C) 2010-2020 Free Software Foundation, Inc. 4// Written by Sriraman Tallam <tmsriram@google.com>. 5 6// This file is part of gold. 7 8// This program is free software; you can redistribute it and/or modify 9// it under the terms of the GNU General Public License as published by 10// the Free Software Foundation; either version 3 of the License, or 11// (at your option) any later version. 12 13// This program is distributed in the hope that it will be useful, 14// but WITHOUT ANY WARRANTY; without even the implied warranty of 15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16// GNU General Public License for more details. 17 18// You should have received a copy of the GNU General Public License 19// along with this program; if not, write to the Free Software 20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21// MA 02110-1301, USA. 22 23// The goal of this program is to verify if identical code folding 24// in safe mode correctly folds functions in a shared object. The 25// foo_* functions below should not be folded on X86_64. 26// For 32-bit X86, the hidden protected and internal symbols can be folded. 27// foo_glob and bar_glob should not be folded, because function pointer 28// of foo_glob is taken. 29 30int __attribute__ ((visibility ("protected"))) 31foo_prot() 32{ 33 return 1; 34} 35 36int __attribute__ ((visibility ("hidden"))) 37foo_hidden() 38{ 39 return 1; 40} 41 42int __attribute__ ((visibility ("internal"))) 43foo_internal() 44{ 45 return 1; 46} 47 48static int 49foo_static() 50{ 51 return 1; 52} 53 54int foo_glob() 55{ 56 return 2; 57} 58 59int bar_glob() 60{ 61 return 2; 62} 63 64int main() 65{ 66 int (*p)() = foo_glob; 67 (void)p; 68 foo_static(); 69 foo_prot(); 70 foo_hidden(); 71 foo_internal(); 72 return 0; 73} 74 75