File indexing completed on 2024-04-28 05:41:06
0001 /* 0002 Copyright (C) 2015 Volker Krause <vkrause@kde.org> 0003 0004 This program is free software; you can redistribute it and/or modify it 0005 under the terms of the GNU Library General Public License as published by 0006 the Free Software Foundation; either version 2 of the License, or (at your 0007 option) any later version. 0008 0009 This program is distributed in the hope that it will be useful, but WITHOUT 0010 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0011 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public 0012 License for more details. 0013 0014 You should have received a copy of the GNU General Public License 0015 along with this program. If not, see <https://www.gnu.org/licenses/>. 0016 */ 0017 0018 struct AlignedBase { 0019 void* m_base; 0020 }; 0021 0022 struct AlignedIntermediateA : virtual public AlignedBase { 0023 void* m_a; 0024 }; 0025 0026 struct AlignedIntermediateB : virtual public AlignedBase { 0027 void* m_b; 0028 }; 0029 0030 struct AlignedDereived : public AlignedIntermediateA, public AlignedIntermediateB { 0031 void* m_d; 0032 }; 0033 0034 0035 struct UnalignedBase { 0036 int m_base; 0037 }; 0038 0039 struct UnalignedIntermediateA : virtual public UnalignedBase { 0040 void* m_a; 0041 }; 0042 0043 struct UnalignedIntermediateB : virtual public UnalignedBase { 0044 bool m_b; 0045 }; 0046 0047 struct UnalignedDerived : public UnalignedIntermediateA, public UnalignedIntermediateB { 0048 short m_d; 0049 }; 0050 0051 0052 int main (int, char**) 0053 { 0054 // make sure the structures aren't optimized away by the compiler 0055 unsigned long long dummy = 0; 0056 #define USED(StructType) { StructType s; dummy += (unsigned long long)&s; } 0057 0058 USED(AlignedBase) 0059 USED(AlignedIntermediateA) 0060 USED(AlignedIntermediateB) 0061 USED(AlignedDereived) 0062 USED(UnalignedDerived) 0063 0064 return dummy; 0065 }