| 1 | // icf_virtual_function_folding_test.cc -- a test case for gold |
| 2 | |
| 3 | // Copyright (C) 2010-2019 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 | // Foo::fn1 is folded into fn2 with ICF. Since this file is linked as a |
| 24 | // position independent executable, a dynamic reloc is needed |
| 25 | // for the virtual call fn1 entry in the vtable. This test makes sure |
| 26 | // the call to Foo::fn1 works correctly after the folding. |
| 27 | |
| 28 | int fn2(void *) |
| 29 | { |
| 30 | return 0xA; |
| 31 | } |
| 32 | |
| 33 | namespace |
| 34 | { |
| 35 | |
| 36 | class Bar |
| 37 | { |
| 38 | public: |
| 39 | virtual ~Bar() { } |
| 40 | virtual int fn1(); |
| 41 | }; |
| 42 | |
| 43 | int Bar::fn1() |
| 44 | { |
| 45 | return 123; |
| 46 | } |
| 47 | |
| 48 | class Foo : public Bar |
| 49 | { |
| 50 | virtual int fn1(); |
| 51 | }; |
| 52 | |
| 53 | int Foo::fn1() |
| 54 | { |
| 55 | return 0xA; |
| 56 | } |
| 57 | |
| 58 | Bar* get() |
| 59 | { |
| 60 | Bar *f = new Foo(); |
| 61 | return f; |
| 62 | } |
| 63 | |
| 64 | } // end of anonymous namespace. |
| 65 | |
| 66 | int main() |
| 67 | { |
| 68 | Bar *f = get(); |
| 69 | f->fn1(); |
| 70 | return 0; |
| 71 | } |