1// constructor_test.cc -- a test case for gold global constructors 2 3// Copyright (C) 2006-2017 Free Software Foundation, Inc. 4// Written by Ian Lance Taylor <iant@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// This file just runs some global constructors and destructors. The 24// last global destructor verifies that the state is as expected, and 25// we assume that it runs correctly itself. 26 27#include <cassert> 28#include <cstdlib> 29 30// These counters let us verify the state. 31 32int c1_count; 33int c2_count; 34int atexit_count; 35 36// This class verifies that there are no objects left when it is 37// destroyed. Therefore, we can only have one instance of this 38// object. 39 40class c1 41{ 42 public: 43 static int count; 44 45 c1() 46 { ++c1_count; } 47 48 ~c1() 49 { 50 --c1_count; 51 assert(c1_count == 0 && c2_count == 0 && atexit_count == 0); 52 } 53}; 54 55c1 c1v; 56 57// A function called at atexit time. 58 59void 60atexit_function() 61{ 62 --atexit_count; 63 assert(atexit_count == c2_count); 64} 65 66// A class which counts itself and also calls atexit. 67 68class c2 69{ 70 public: 71 c2() 72 { 73 assert(atexit_count == c2_count); 74 ++c2_count; 75 atexit(atexit_function); 76 ++atexit_count; 77 } 78 79 ~c2() 80 { --c2_count; } 81}; 82 83c2 c2v1; 84c2 c2v2; 85 86int 87main() 88{ 89 return 0; 90} 91