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      1 // icf_safe_so_test.cc -- a test case for gold
      2 
      3 // Copyright (C) 2010-2016 Free Software Foundation, Inc.
      4 // Written by Sriraman Tallam <tmsriram (at) 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 
     30 int  __attribute__ ((visibility ("protected")))
     31 foo_prot()
     32 {
     33   return 1;
     34 }
     35 
     36 int __attribute__ ((visibility ("hidden")))
     37 foo_hidden()
     38 {
     39   return 1;
     40 }
     41 
     42 int __attribute__ ((visibility ("internal")))
     43 foo_internal()
     44 {
     45   return 1;
     46 }
     47 
     48 static int
     49 foo_static()
     50 {
     51   return 1;
     52 }
     53 
     54 int foo_glob()
     55 {
     56   return 2;
     57 }
     58 
     59 int bar_glob()
     60 {
     61   return 2;
     62 }
     63 
     64 int 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