GCC 3.x 和 4.x 中 C++ 对象中的 VTable 布局和 VTable 指针位置是什么?

2022-01-23 00:00:00 g++ c++

我正在寻找 VTable 结构、顺序和内容的详细信息,以及 vtable 指针在对象中的位置.

理想情况下,这将涵盖单继承、多继承和虚拟继承.

对外部文档的引用也将不胜感激

GCC 4.0x 类布局的文档在 这里 和 Itanium,以及更广泛的 GNU,ABI 布局文档是这里.

解决方案

虽然编译器可以自由放置数据指针(在 MI 和 VI 场景中,或到 typeinfos),但虚拟表通常被视为函数指针数组,整数(用于修正)或标记元素(例如 NULL 指针)也可以放入其中.布局通常是特定于编译器的(或特定于 ABI 的,多个 C++ 编译器共享一个 ABI),但如果正在编译的类具有稳定的接口,则它是稳定的(否则您必须一直重新编译代码,这很麻烦).还需要额外的表来处理涉及虚拟和多重继承的极端情况,并确保派生类构造期间的虚拟调用按照标准所说的那样在这些情况下运行(这些是 VTT 和构造表中的以下输出用于).

至于 GCC 4.x 的具体情况:-fdump-class-hierarchy 开关确实像描述的那样起作用(然后是一些).我使用下面的示例代码在 Coliru 上对其进行了测试:

结构基{虚拟 ~Base() {}虚空 f() = 0;};结构OtherBase{虚拟?OtherBase(){}虚空 g() {}};结构派生:公共基础{虚拟 ~Derived() {}虚空 f() {}};struct MultiplyDerived:公共基础、公共 OtherBase{虚拟 ~MultiplyDerived() {}虚空 f() {}虚空 g() {}};struct OtherDerived:公共基础{虚拟 ~OtherDerived() {}虚空 f() {}};结构 DiamondDerived:公共派生,公共 OtherDerived{虚拟 ~DiamondDerived() {}虚空 f() {}};struct VirtuallyDerived:虚拟公共基础{虚拟 ~VirtuallyDerived() {}虚空 f() {}};struct OtherVirtuallyDerived:虚拟公共基础{虚拟~OtherVirtuallyDerived() {}虚空 f() {}};struct VirtuallyDiamondDerived: public VirtuallyDerived, public OtherVirtuallyDerived{虚拟 ~VirtuallyDiamondDerived() {}虚空 f() {}};struct DoublyVirtuallyDiamondDerived: 虚拟公共 VirtuallyDerived, 虚拟公共 OtherVirtuallyDerived{虚拟 ~DoublyVirtuallyDiamondDerived() {}虚空 f() {}};struct MixedVirtuallyDerived:虚拟公共Base,公共OtherBase{虚拟 ~MixedVirtuallyDerived() {}};struct MixedVirtuallyDiamondDerived: public VirtuallyDerived, public MixedVirtuallyDerived{虚拟 ~MixedVirtuallyDiamondDerived() {}虚空 f() {}虚空 g() {}};struct VirtuallyMultiplyDerived:虚拟公共Base,虚拟公共OtherBase{虚拟 ~VirtuallyMultiplyDerived() {}};struct OtherVirtuallyMultiplyDerived:虚拟公共Base,虚拟公共OtherBase{虚拟 ~OtherVirtuallyMultiplyDerived() {}};结构 MultiplyVirtuallyDiamondDerived:公共 VirtuallyMultiplyDerived,公共 OtherVirtuallyMultiplyDerived{虚拟 ~MultiplyVirtuallyDiamondDerived() {}虚空 f() {}虚空 g() {}};

并从 G++ 接收(损坏的名称指南:TI 是 typeinfos,TV 是 vtables,Th 和 Tv 是用于在存在多重和/或虚拟继承时进行正确虚拟调用的 thunk):

<上一页>用于基础的 VtableBase::_ZTV4Base: 5u 个条目0 (int (*)(...))08 (int (*)(...))(& _ZTI4Base)16 0u24 0u32 (int (*)(...))__cxa_pure_virtual类库大小=8 对齐=8基本尺寸=8 基本对齐=8Base (0x0x7fd42c0355a0) 0 几乎为空vptr=((& Base::_ZTV4Base) + 16u)OtherBase 的 VtableOtherBase::_ZTV9OtherBase: 5u 条目0 (int (*)(...))08 (int (*)(...))(& _ZTI9OtherBase)16 (int (*)(...))OtherBase::~OtherBase24 (int (*)(...))OtherBase::~OtherBase32 (int (*)(...))OtherBase::g类 OtherBase大小=8 对齐=8基本尺寸=8 基本对齐=8OtherBase (0x0x7fd42c035600) 0 几乎为空vptr=((& OtherBase::_ZTV9OtherBase) + 16u)导出的 VtableDerived::_ZTV7Derived: 5u 个条目0 (int (*)(...))08 (int (*)(...))(& _ZTI7Derived)16 (int (*)(...))Derived::~Derived24 (int (*)(...))Derived::~Derived32 (int (*)(...))Derived::f类派生大小=8 对齐=8基本尺寸=8 基本对齐=8派生 (0x0x7fd42c02d138) 0 几乎为空vptr=((& Derived::_ZTV7Derived) + 16u)Base (0x0x7fd42c035660) 0 几乎为空主要派生(0x0x7fd42c02d138)MultiplyDerived 的 VtableMultiplyDerived::_ZTV15MultiplyDerived: 11u 个条目0 (int (*)(...))08 (int (*)(...))(& _ZTI15MultiplyDerived)16 (int (*)(...))MultiplyDerived::~MultiplyDerived24 (int (*)(...))MultiplyDerived::~MultiplyDerived32 (int (*)(...))MultiplyDerived::f40 (int (*)(...))MultiplyDerived::g48 (int (*)(...))-856 (int (*)(...))(& _ZTI15MultiplyDerived)64 (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerivedD1Ev72 (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerivedD0Ev80 (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerived1gEv类 MultiplyDerived尺寸=16 对齐=8基本尺寸=16 基本对齐=8乘法衍生 (0x0x7fd42c04aaf0) 0vptr=((& MultiplyDerived::_ZTV15MultiplyDerived) + 16u)Base (0x0x7fd42c0356c0) 0 几乎为空主要用于 MultiplyDerived (0x0x7fd42c04aaf0)OtherBase (0x0x7fd42c035720) 8 几乎为空vptr=((& MultiplyDerived::_ZTV15MultiplyDerived) + 64u)OtherDerived 的 VtableOtherDerived::_ZTV12OtherDerived: 5u 条目0 (int (*)(...))08 (int (*)(...))(& _ZTI12OtherDerived)16 (int (*)(...))OtherDerived::~OtherDerived24 (int (*)(...))OtherDerived::~OtherDerived32 (int (*)(...))OtherDerived::f其他派生类大小=8 对齐=8基本尺寸=8 基本对齐=8OtherDerived (0x0x7fd42c02d1a0) 0 几乎为空vptr=((& OtherDerived::_ZTV12OtherDerived) + 16u)基数 (0x0x7fd42c035780) 0 几乎为空主要的其他派生(0x0x7fd42c02d1a0)DiamondDerived 的 VtableDiamondDerived::_ZTV14DiamondDerived: 10u 个条目0 (int (*)(...))08 (int (*)(...))(& _ZTI14DiamondDerived)16 (int (*)(...))DiamondDerived::~DiamondDerived24 (int (*)(...))DiamondDerived::~DiamondDerived32 (int (*)(...))DiamondDerived::f40 (int (*)(...))-848 (int (*)(...))(& _ZTI14DiamondDerived)56 (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerivedD1Ev64 (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerivedD0Ev72 (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerived1fEv类 DiamondDerived尺寸=16 对齐=8基本尺寸=16 基本对齐=8钻石派生(0x0x7fd42c0625b0)0vptr=((& DiamondDerived::_ZTV14DiamondDerived) + 16u)派生 (0x0x7fd42c02d208) 0 几乎为空主要用于 DiamondDerived (0x0x7fd42c0625b0)Base (0x0x7fd42c0357e0) 0 几乎为空主要派生(0x0x7fd42c02d208)OtherDerived (0x0x7fd42c02d270) 8 几乎为空vptr=((& DiamondDerived::_ZTV14DiamondDerived) + 56u)Base (0x0x7fd42c035840) 8 几乎为空主要的其他派生(0x0x7fd42c02d270)VirtuallyDerived 的 VtableVirtuallyDerived::_ZTV16VirtuallyDerived: 8u 条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI16VirtuallyDerived)40 (int (*)(...))VirtuallyDerived::~VirtuallyDerived48 (int (*)(...))VirtuallyDerived::~VirtuallyDerived56 (int (*)(...))VirtuallyDerived::f虚拟衍生的 VTTVirtuallyDerived::_ZTT16VirtuallyDerived: 2u 个条目0 ((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)8 ((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)虚拟派生类大小=8 对齐=8基本尺寸=8 基本对齐=8VirtuallyDerived (0x0x7fd42c02d2d8) 0 几乎为空vptridx=0u vptr=((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)Base (0x0x7fd42c0358a0) 0 几乎为空的虚拟主要用于 VirtuallyDerived (0x0x7fd42c02d2d8)vptridx=8u vbaseoffset=-40OtherVirtuallyDerived 的 VtableOtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived: 8u 条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI21OtherVirtuallyDerived)40 (int (*)(...))OtherVirtuallyDerived::~OtherVirtuallyDerived48 (int (*)(...))OtherVirtuallyDerived::~OtherVirtuallyDerived56 (int (*)(...))OtherVirtuallyDerived::f其他虚拟派生的 VTTOtherVirtuallyDerived::_ZTT21OtherVirtuallyDerived: 2u 个条目0 ((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)8 ((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)类 OtherVirtuallyDerived大小=8 对齐=8基本尺寸=8 基本对齐=8OtherVirtuallyDerived (0x0x7fd42c02d340) 0 几乎为空vptridx=0u vptr=((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)Base (0x0x7fd42c035900) 0 几乎为空的虚拟主要用于 OtherVirtuallyDerived (0x0x7fd42c02d340)vptridx=8u vbaseoffset=-40VirtuallyDiamondDerived 的 VtableVirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived: 16u 个条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI23VirtuallyDiamondDerived)40 (int (*)(...))VirtuallyDiamondDerived::~VirtuallyDiamondDerived48 (int (*)(...))VirtuallyDiamondDerived::~VirtuallyDiamondDerived56 (int (*)(...))VirtuallyDiamondDerived::f64 18446744073709551608u72 18446744073709551608u80 18446744073709551608u88 (int (*)(...))-896 (int (*)(...))(& _ZTI23VirtuallyDiamondDerived)104 (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerivedD1Ev112 (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerivedD0Ev120 (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerived1fEvVirtuallyDiamondDerived 中 VirtuallyDerived(0x0x7fd42c02d3a8 实例)的构造 vtableVirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived: 8u 条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI16VirtuallyDerived)40 0u48 0u56 (int (*)(...))VirtuallyDerived::fVirtuallyDiamondDerived 中 OtherVirtuallyDerived (0x0x7fd42c02d410 实例) 的构造 vtableVirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived: 15u 个条目0 18446744073709551608u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI21OtherVirtuallyDerived)40 0u48 0u56 (int (*)(...))OtherVirtuallyDerived::f64 8u72 8u80 (int (*)(...))888 (int (*)(...))(& _ZTI21OtherVirtuallyDerived)96 0u104 0u112 (int (*)(...))OtherVirtuallyDerived::_ZTv0_n32_N21OtherVirtuallyDerived1fEvVirtuallyDiamondDerived 的 VTTVirtuallyDiamondDerived::_ZTT23VirtuallyDiamondDerived: 7u 个条目0 ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)8 ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)16 ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)24 ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 40u)32 ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 96u)40 ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)48 ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 104u)VirtuallyDiamondDerived 类尺寸=16 对齐=8基本尺寸=16 基本对齐=8VirtuallyDiamondDerived (0x0x7fd42c07e460) 0vptridx=0u vptr=((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)VirtuallyDerived (0x0x7fd42c02d3a8) 0 几乎为空主要用于 VirtuallyDiamondDerived (0x0x7fd42c07e460)subvttidx=8uBase (0x0x7fd42c035960) 0 几乎为空的虚拟主要用于 VirtuallyDerived (0x0x7fd42c02d3a8)vptridx=40u vbaseoffset=-40OtherVirtuallyDerived (0x0x7fd42c02d410) 8 几乎为空失主subvttidx=24u vptridx=48u vptr=((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 104u)基本 (0x0x7fd42c035960) 替代路径DoublyVirtuallyDiamondDerived 的 VtableDoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived: 18u 个条目0 8u8 0u16 0u24 0u32 0u40 (int (*)(...))048 (int (*)(...))(& _ZTI29DoublyVirtuallyDiamondDerived)56 (int (*)(...))DoublyVirtuallyDiamondDerived::~DoublyVirtuallyDiamondDerived64 (int (*)(...))DoublyVirtuallyDiamondDerived::~DoublyVirtuallyDiamondDerived72 (int (*)(...))DoublyVirtuallyDiamondDerived::f80 18446744073709551608u88 18446744073709551608u96 18446744073709551608u104 (int (*)(...))-8112 (int (*)(...))(& _ZTI29DoublyVirtuallyDiamondDerived)120 (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n24_N29DoublyVirtuallyDiamondDerivedD1Ev128 (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n24_N29DoublyVirtuallyDiamondDerivedD0Ev136 (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n32_N29DoublyVirtuallyDiamondDerived1fEvDoublyVirtuallyDiamondDerived 中 VirtuallyDerived 的构造 vtableDoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived: 8u 个条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI16VirtuallyDerived)40 0u48 0u56 (int (*)(...))VirtuallyDerived::fDoublyVirtuallyDiamondDerived 中 OtherVirtuallyDerived 的构造 vtableDoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived: 15u 个条目0 18446744073709551608u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI21OtherVirtuallyDerived)40 0u48 0u56 (int (*)(...))OtherVirtuallyDerived::f64 8u72 8u80 (int (*)(...))888 (int (*)(...))(& _ZTI21OtherVirtuallyDerived)96 0u104 0u112 (int (*)(...))OtherVirtuallyDerived::_ZTv0_n32_N21OtherVirtuallyDerived1fEvVTT for DoublyVirtuallyDiamondDerivedDoublyVirtuallyDiamondDerived::_ZTT29DoublyVirtuallyDiamondDerived: 8u 个条目0 ((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)8 ((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)16 ((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)24 ((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 120u)32 ((&DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)40 ((&DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)48 ((&DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 40u)56 ((&DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 96u)类 DoubleVirtuallyDiamondDerived尺寸=16 对齐=8基本尺寸=8 基本对齐=8DoublyVirtuallyDiamondDerived (0x0x7fd42c07ea10) 0 几乎为空vptridx=0u vptr=((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)VirtuallyDerived (0x0x7fd42c02d478) 0 几乎为空的虚拟主要用于 DoublyVirtuallyDiamondDerived (0x0x7fd42c07ea10)subvttidx=32u vptridx=8u vbaseoffset=-48Base (0x0x7fd42c035a80) 0 几乎为空的虚拟主要用于 VirtuallyDerived (0x0x7fd42c02d478)vptridx=16u vbaseoffset=-40OtherVirtuallyDerived (0x0x7fd42c02d4e0) 8 几乎为空的虚拟失主subvttidx=48u vptridx=24u vbaseoffset=-56 vptr=((&DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 120u)基本 (0x0x7fd42c035a80) 替代路径MixedVirtuallyDerived 的 VtableMixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived: 13u 个条目0 8u8 (int (*)(...))016 (int (*)(...))(& _ZTI21MixedVirtuallyDerived)24 0u32 0u40 (int (*)(...))OtherBase::g48 0u56 18446744073709551608u64 (int (*)(...))-872 (int (*)(...))(& _ZTI21MixedVirtuallyDerived)80 0u88 0u96 (int (*)(...))__cxa_pure_virtual混合虚拟衍生的 VTTMixedVirtuallyDerived::_ZTT21MixedVirtuallyDerived: 2u 个条目0 ((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 24u)8 ((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 80u)类 MixedVirtuallyDerived尺寸=16 对齐=8基本尺寸=8 基本对齐=8MixedVirtuallyDerived (0x0x7fd42c07eee0) 0 几乎为空vptridx=0u vptr=((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 24u)Base (0x0x7fd42c035c60) 8 个几乎为空的虚拟vptridx=8u vbaseoffset=-24 vptr=((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 80u)OtherBase (0x0x7fd42c035cc0) 0 几乎为空主要用于 MixedVirtuallyDerived (0x0x7fd42c07eee0)MixedVirtuallyDiamondDerived 的 VtableMixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived: 15u 个条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI28MixedVirtuallyDiamondDerived)40 (int (*)(...))MixedVirtuallyDiamondDerived::~MixedVirtuallyDiamondDerived48 (int (*)(...))MixedVirtuallyDiamondDerived::~MixedVirtuallyDiamondDerived56 (int (*)(...))MixedVirtuallyDiamondDerived::f64 (int (*)(...))MixedVirtuallyDiamondDerived::g72 18446744073709551608u80 (int (*)(...))-888 (int (*)(...))(& _ZTI28MixedVirtuallyDiamondDerived)96 (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerivedD1Ev104 (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerivedD0Ev112 (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerived1gEvMixedVirtuallyDiamondDerived 中 VirtuallyDerived(0x0x7fd42c02d750 实例)的构造 vtableMixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived: 8u 个条目0 0u8 0u16 0u24 (int (*)(...))032 (int (*)(...))(& _ZTI16VirtuallyDerived)40 0u48 0u56 (int (*)(...))VirtuallyDerived::fMixedVirtuallyDiamondDerived 中 MixedVirtuallyDerived(0x0x7fd42c0b5380 实例)的构造 vtableMixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived: 13u 个条目0 18446744073709551608u8 (int (*)(...))016 (int (*)(...))(& _ZTI21MixedVirtuallyDerived)24 0u32 0u40 (int (*)(...))OtherBase::g48 0u56 8u64 (int (*)(...))872 (int (*)(...))(& _ZTI21MixedVirtuallyDerived)80 0u88 0u96 (int (*)(...))__cxa_pure_virtualVTT for MixedVirtuallyDiamondDerivedMixedVirtuallyDiamondDerived::_ZTT28MixedVirtuallyDiamondDerived: 7u 个条目0 ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)8 ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)16 ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)24 ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived) + 24u)32 ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived) + 80u)40 ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)48 ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 96u)类 MixedVirtuallyDiamondDerived尺寸=16 对齐=8基本尺寸=16 基本对齐=8MixedVirtuallyDiamondDerived (0x0x7fd42c0b5310) 0vptridx=0u vptr=((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)VirtuallyDerived (0x0x7fd42c02d750) 0 几乎为空主要用于 MixedVirtuallyDiamondDerived (0x0x7fd42c0b5310)subvttidx=8uBase (0x0x7fd42c035d20) 0 几乎为空的虚拟主要用于 VirtuallyDerived (0x0x7fd42c02d750)vptridx=40u vbaseoffset=-40MixedVirtuallyDerived (0x0x7fd42c0b5380) 8 几乎为空subvttidx=24u vptridx=48u vptr=((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 96u)基本 (0x0x7fd42c035d20) 替代路径OtherBase (0x0x7fd42c035d80) 8 几乎为空主要用于 MixedVirtuallyDerived (0x0x7fd42c0b5380)VirtuallyMultiplyDerived 的 VtableVirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived:16u 个条目0 8u8 0u16 0u24 0u32 (int (*)(...))040 (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)48 0u56 0u64 (int (*)(...))__cxa_pure_virtual72 0u80 18446744073709551608u88 (int (*)(...))-896 (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)104 0u112 0u120 (int (*)(...))OtherBase::gVirtuallyMultiplyDerived 的 VTTVirtuallyMultiplyDerived::_ZTT24VirtuallyMultiplyDerived:3u 个条目0 ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)8 ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)16 ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 104u)类 VirtuallyMultiplyDerived尺寸=16 对齐=8基本尺寸=8 基本对齐=8VirtuallyMultiplyDerived (0x0x7fd42c0b59a0) 0 几乎为空vptridx=0u vptr=((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)Base (0x0x7fd42c035e40) 0 几乎为空的虚拟主要用于 VirtuallyMultiplyDerived (0x0x7fd42c0b59a0)vptridx=8u vbaseoffset=-40OtherBase (0x0x7fd42c035ea0) 8 几乎为空的虚拟vptridx=16u vbaseoffset=-48 vptr=((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 104u)OtherVirtuallyMultiplyDerived 的 VtableOtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived: 16u 个条目0 8u8 0u16 0u24 0u32 (int (*)(...))040 (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)48 0u56 0u64 (int (*)(...))__cxa_pure_virtual72 0u80 18446744073709551608u88 (int (*)(...))-896 (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)104 0u112 0u120 (int (*)(...))OtherBase::g其他虚拟乘法衍生的 VTTOtherVirtuallyMultiplyDerived::_ZTT29OtherVirtuallyMultiplyDerived: 3u 个条目0 ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)8 ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)16 ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 104u)类 OtherVirtuallyMultiplyDerived尺寸=16 对齐=8基本尺寸=8 基本对齐=8OtherVirtuallyMultiplyDerived (0x0x7fd42c0b5d90) 0 几乎为空vptridx=0u vptr=((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)Base (0x0x7fd42c035f00) 0 几乎为空的虚拟主要用于 OtherVirtuallyMultiplyDerived (0x0x7fd42c0b5d90)vptridx=8u vbaseoffset=-40OtherBase (0x0x7fd42c035f60) 8 几乎为空的虚拟vptridx=16u vbaseoffset=-48 vptr=((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 104u)MultiplyVirtuallyDiamondDerived 的 VtableMultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived: 26u 个条目0 16u8 0u16 0u24 0u32 (int (*)(...))040 (int (*)(...))(& _ZTI31MultiplyVirtuallyDiamondDerived)48 (int (*)(...))MultiplyVirtuallyDiamondDerived::~MultiplyVirtuallyDiamondDerived56 (int (*)(...))MultiplyVirtuallyDiamondDerived::~MultiplyVirtuallyDiamondDerived64 (int (*)(...))MultiplyVirtuallyDiamondDerived::f72 (int (*)(...))MultiplyVirtuallyDiamondDerived::g80 8u88 18446744073709551608u96 18446744073709551608u104 18446744073709551608u112 (int (*)(...))-8120 (int (*)(...))(& _ZTI31MultiplyVirtuallyDiamondDerived)128 (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZThn8_N31MultiplyVirtuallyDiamondDerivedD1Ev136 (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZThn8_N31MultiplyVirtuallyDiamondDerivedD0Ev144 0u152 18446744073709551600u160 18446744073709551600u168(整数(*)(...))-16176(int(*)(...))(&_ZTI31MultiplyVirtuallyDiamondDerived)184 (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n24_N31MultiplyVirtuallyDiamondDerivedD1Ev192 (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n24_N31MultiplyVirtuallyDiamondDerivedD0Ev200 (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n32_N31MultiplyVirtuallyDiamondDerived1gEvMultiplyVirtuallyDiamondDerived 中 VirtuallyMultiplyDerived(0x0x7fd42bcdf230 实例)的构造 vtableMultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived: 16u 个条目0 16u8 0u16 0u24 0u32 (int (*)(...))040 (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)48 0u56 0u64 (int (*)(...))__cxa_pure_virtual72 0u80 18446744073709551600u88 (int (*)(...))-1696 (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)104 0u112 0u120 (int (*)(...))OtherBase::gMultiplyVirtuallyDiamondDerived 中 OtherVirtuallyMultiplyDerived(0x0x7fd42bcdf2a0 实例)的构造 vtableMultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived: 23u 个条目0 8u8 18446744073709551608u16 18446744073709551608u24 0u32 (int (*)(...))040 (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)48 0u56 0u64 (int (*)(...))__cxa_pure_virtual72 0u80 8u88 (int (*)(...))896 (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)104 0u112 0u120 (int (*)(...))__cxa_pure_virtual128 0u136 18446744073709551608u144(整数(*)(...))-8152 (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)160 0u168 0u176 (int (*)(...))OtherBase::gMultiplyVirtuallyDiamondDerived 的 VTTMultiplyVirtuallyDiamondDerived::_ZTT31MultiplyVirtuallyDiamondDerived: 10u 个条目0 ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)8 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 48u)16 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 48u)24 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 104u)32 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 48u)40 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 104u)48 ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 160u)56 ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)64 ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 184u)72 ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 128u)类 MultiplyVirtuallyDiamondDerived大小=24 对齐=8基本尺寸=16 基本对齐=8MultiplyVirtuallyDiamondDerived (0x0x7fd42bcdf1c0) 0vptridx=0u vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)VirtuallyMultiplyDerived (0x0x7fd42bcdf230) 0 几乎为空主要用于 MultiplyVirtuallyDiamondDerived (0x0x7fd42bcdf1c0)subvttidx=8uBase (0x0x7fd42bce2000) 0 几乎为空的虚拟主要用于 VirtuallyMultiplyDerived (0x0x7fd42bcdf230)vptridx=56u vbaseoffset=-40OtherBase (0x0x7fd42bce2060) 16 几乎为空的虚拟vptridx=64u vbaseoffset=-48 vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 184u)OtherVirtuallyMultiplyDerived (0x0x7fd42bcdf2a0) 8 几乎为空失主subvttidx=32u vptridx=72u vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 128u)基本 (0x0x7fd42bce2000) 替代路径OtherBase (0x0x7fd42bce2060) 替代路径

I am looking for details of the VTable structure, order and contents, and the location of the vtable pointers within objects.

Ideally, this will cover single inheritance, multiple inheritance, and virtual inheritance.

References to external documentation would also be appreciated

Documentation of GCC 4.0x class layout is here and the Itanium, and more broadly GNU, ABI layout documents are here.

解决方案

A virtual table is generally treated as an array of function pointers, although compilers are free to put data pointers (in MI and VI scenarios, or to typeinfos), integers (for fixups), or sentinel elements (such as NULL pointers) into it as well. The layout is generally compiler-specific (or ABI-specific where multiple C++ compilers share an ABI), but stable provided the classes being compiled have stable interfaces (otherwise you'd have to recompile your code all the time, and that's a drag). There are also additional tables that are needed to handle corner cases involving virtual and multiple inheritance, and to make sure that virtual calls during derived class construction behave as the Standard says they should under those circumstances (those are what the VTTs and construction tables in the output below are for).

As to the specific case of GCC 4.x: the -fdump-class-hierarchy switch indeed acts as described (and then some). I tested it on Coliru using the sample code below:

struct Base
{
    virtual ~Base() {}
    virtual void f() = 0;
};

struct OtherBase
{
    virtual ~OtherBase() {}
    virtual void g() {}
};

struct Derived: public Base
{
    virtual ~Derived() {}
    virtual void f() {}
};

struct MultiplyDerived: public Base, public OtherBase
{
    virtual ~MultiplyDerived() {}
    virtual void f() {}
    virtual void g() {}
};

struct OtherDerived: public Base
{
    virtual ~OtherDerived() {}
    virtual void f() {}
};

struct DiamondDerived: public Derived, public OtherDerived
{
    virtual ~DiamondDerived() {}
    virtual void f() {}
};

struct VirtuallyDerived: virtual public Base
{
    virtual ~VirtuallyDerived() {}
    virtual void f() {}
};

struct OtherVirtuallyDerived: virtual public Base
{
    virtual ~OtherVirtuallyDerived() {}
    virtual void f() {}
};

struct VirtuallyDiamondDerived: public VirtuallyDerived, public OtherVirtuallyDerived
{
    virtual ~VirtuallyDiamondDerived() {}
    virtual void f() {}
};

struct DoublyVirtuallyDiamondDerived: virtual public VirtuallyDerived, virtual public OtherVirtuallyDerived
{
    virtual ~DoublyVirtuallyDiamondDerived() {}
    virtual void f() {}
};

struct MixedVirtuallyDerived: virtual public Base, public OtherBase
{
    virtual ~MixedVirtuallyDerived() {}
};

struct MixedVirtuallyDiamondDerived: public VirtuallyDerived, public MixedVirtuallyDerived
{
    virtual ~MixedVirtuallyDiamondDerived() {}
    virtual void f() {}
    virtual void g() {}
};

struct VirtuallyMultiplyDerived: virtual public Base, virtual public OtherBase
{
    virtual ~VirtuallyMultiplyDerived() {}
};

struct OtherVirtuallyMultiplyDerived: virtual public Base, virtual public OtherBase
{
    virtual ~OtherVirtuallyMultiplyDerived() {}
};

struct MultiplyVirtuallyDiamondDerived: public VirtuallyMultiplyDerived, public OtherVirtuallyMultiplyDerived
{
    virtual ~MultiplyVirtuallyDiamondDerived() {}
    virtual void f() {}
    virtual void g() {}
};

and received from G++ (mangled name guide: TI's are typeinfos, TV's are vtables, and Th's and Tv's are thunks used to make correct virtual calls in the presence of multiple and/or virtual inheritance):

Vtable for Base

Base::_ZTV4Base: 5u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI4Base)

16    0u

24    0u

32    (int (*)(...))__cxa_pure_virtual


Class Base

   size=8 align=8

   base size=8 base align=8

Base (0x0x7fd42c0355a0) 0 nearly-empty

    vptr=((& Base::_ZTV4Base) + 16u)


Vtable for OtherBase

OtherBase::_ZTV9OtherBase: 5u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI9OtherBase)

16    (int (*)(...))OtherBase::~OtherBase

24    (int (*)(...))OtherBase::~OtherBase

32    (int (*)(...))OtherBase::g


Class OtherBase

   size=8 align=8

   base size=8 base align=8

OtherBase (0x0x7fd42c035600) 0 nearly-empty

    vptr=((& OtherBase::_ZTV9OtherBase) + 16u)


Vtable for Derived

Derived::_ZTV7Derived: 5u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI7Derived)

16    (int (*)(...))Derived::~Derived

24    (int (*)(...))Derived::~Derived

32    (int (*)(...))Derived::f


Class Derived

   size=8 align=8

   base size=8 base align=8

Derived (0x0x7fd42c02d138) 0 nearly-empty

    vptr=((& Derived::_ZTV7Derived) + 16u)

  Base (0x0x7fd42c035660) 0 nearly-empty

      primary-for Derived (0x0x7fd42c02d138)


Vtable for MultiplyDerived

MultiplyDerived::_ZTV15MultiplyDerived: 11u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI15MultiplyDerived)

16    (int (*)(...))MultiplyDerived::~MultiplyDerived

24    (int (*)(...))MultiplyDerived::~MultiplyDerived

32    (int (*)(...))MultiplyDerived::f

40    (int (*)(...))MultiplyDerived::g

48    (int (*)(...))-8

56    (int (*)(...))(& _ZTI15MultiplyDerived)

64    (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerivedD1Ev

72    (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerivedD0Ev

80    (int (*)(...))MultiplyDerived::_ZThn8_N15MultiplyDerived1gEv


Class MultiplyDerived

   size=16 align=8

   base size=16 base align=8

MultiplyDerived (0x0x7fd42c04aaf0) 0

    vptr=((& MultiplyDerived::_ZTV15MultiplyDerived) + 16u)

  Base (0x0x7fd42c0356c0) 0 nearly-empty

      primary-for MultiplyDerived (0x0x7fd42c04aaf0)

  OtherBase (0x0x7fd42c035720) 8 nearly-empty

      vptr=((& MultiplyDerived::_ZTV15MultiplyDerived) + 64u)


Vtable for OtherDerived

OtherDerived::_ZTV12OtherDerived: 5u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI12OtherDerived)

16    (int (*)(...))OtherDerived::~OtherDerived

24    (int (*)(...))OtherDerived::~OtherDerived

32    (int (*)(...))OtherDerived::f


Class OtherDerived

   size=8 align=8

   base size=8 base align=8

OtherDerived (0x0x7fd42c02d1a0) 0 nearly-empty

    vptr=((& OtherDerived::_ZTV12OtherDerived) + 16u)

  Base (0x0x7fd42c035780) 0 nearly-empty

      primary-for OtherDerived (0x0x7fd42c02d1a0)


Vtable for DiamondDerived

DiamondDerived::_ZTV14DiamondDerived: 10u entries

0     (int (*)(...))0

8     (int (*)(...))(& _ZTI14DiamondDerived)

16    (int (*)(...))DiamondDerived::~DiamondDerived

24    (int (*)(...))DiamondDerived::~DiamondDerived

32    (int (*)(...))DiamondDerived::f

40    (int (*)(...))-8

48    (int (*)(...))(& _ZTI14DiamondDerived)

56    (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerivedD1Ev

64    (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerivedD0Ev

72    (int (*)(...))DiamondDerived::_ZThn8_N14DiamondDerived1fEv


Class DiamondDerived

   size=16 align=8

   base size=16 base align=8

DiamondDerived (0x0x7fd42c0625b0) 0

    vptr=((& DiamondDerived::_ZTV14DiamondDerived) + 16u)

  Derived (0x0x7fd42c02d208) 0 nearly-empty

      primary-for DiamondDerived (0x0x7fd42c0625b0)

    Base (0x0x7fd42c0357e0) 0 nearly-empty

        primary-for Derived (0x0x7fd42c02d208)

  OtherDerived (0x0x7fd42c02d270) 8 nearly-empty

      vptr=((& DiamondDerived::_ZTV14DiamondDerived) + 56u)

    Base (0x0x7fd42c035840) 8 nearly-empty

        primary-for OtherDerived (0x0x7fd42c02d270)


Vtable for VirtuallyDerived

VirtuallyDerived::_ZTV16VirtuallyDerived: 8u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI16VirtuallyDerived)

40    (int (*)(...))VirtuallyDerived::~VirtuallyDerived

48    (int (*)(...))VirtuallyDerived::~VirtuallyDerived

56    (int (*)(...))VirtuallyDerived::f


VTT for VirtuallyDerived

VirtuallyDerived::_ZTT16VirtuallyDerived: 2u entries

0     ((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)

8     ((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)


Class VirtuallyDerived

   size=8 align=8

   base size=8 base align=8

VirtuallyDerived (0x0x7fd42c02d2d8) 0 nearly-empty

    vptridx=0u vptr=((& VirtuallyDerived::_ZTV16VirtuallyDerived) + 40u)

  Base (0x0x7fd42c0358a0) 0 nearly-empty virtual

      primary-for VirtuallyDerived (0x0x7fd42c02d2d8)

      vptridx=8u vbaseoffset=-40


Vtable for OtherVirtuallyDerived

OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived: 8u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI21OtherVirtuallyDerived)

40    (int (*)(...))OtherVirtuallyDerived::~OtherVirtuallyDerived

48    (int (*)(...))OtherVirtuallyDerived::~OtherVirtuallyDerived

56    (int (*)(...))OtherVirtuallyDerived::f


VTT for OtherVirtuallyDerived

OtherVirtuallyDerived::_ZTT21OtherVirtuallyDerived: 2u entries

0     ((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)

8     ((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)


Class OtherVirtuallyDerived

   size=8 align=8

   base size=8 base align=8

OtherVirtuallyDerived (0x0x7fd42c02d340) 0 nearly-empty

    vptridx=0u vptr=((& OtherVirtuallyDerived::_ZTV21OtherVirtuallyDerived) + 40u)

  Base (0x0x7fd42c035900) 0 nearly-empty virtual

      primary-for OtherVirtuallyDerived (0x0x7fd42c02d340)

      vptridx=8u vbaseoffset=-40


Vtable for VirtuallyDiamondDerived

VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived: 16u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI23VirtuallyDiamondDerived)

40    (int (*)(...))VirtuallyDiamondDerived::~VirtuallyDiamondDerived

48    (int (*)(...))VirtuallyDiamondDerived::~VirtuallyDiamondDerived

56    (int (*)(...))VirtuallyDiamondDerived::f

64    18446744073709551608u

72    18446744073709551608u

80    18446744073709551608u

88    (int (*)(...))-8

96    (int (*)(...))(& _ZTI23VirtuallyDiamondDerived)

104   (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerivedD1Ev

112   (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerivedD0Ev

120   (int (*)(...))VirtuallyDiamondDerived::_ZThn8_N23VirtuallyDiamondDerived1fEv


Construction vtable for VirtuallyDerived (0x0x7fd42c02d3a8 instance) in VirtuallyDiamondDerived

VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived: 8u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI16VirtuallyDerived)

40    0u

48    0u

56    (int (*)(...))VirtuallyDerived::f


Construction vtable for OtherVirtuallyDerived (0x0x7fd42c02d410 instance) in VirtuallyDiamondDerived

VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived: 15u entries

0     18446744073709551608u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI21OtherVirtuallyDerived)

40    0u

48    0u

56    (int (*)(...))OtherVirtuallyDerived::f

64    8u

72    8u

80    (int (*)(...))8

88    (int (*)(...))(& _ZTI21OtherVirtuallyDerived)

96    0u

104   0u

112   (int (*)(...))OtherVirtuallyDerived::_ZTv0_n32_N21OtherVirtuallyDerived1fEv


VTT for VirtuallyDiamondDerived

VirtuallyDiamondDerived::_ZTT23VirtuallyDiamondDerived: 7u entries

0     ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)

8     ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

16    ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

24    ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 40u)

32    ((& VirtuallyDiamondDerived::_ZTC23VirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 96u)

40    ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)

48    ((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 104u)


Class VirtuallyDiamondDerived

   size=16 align=8

   base size=16 base align=8

VirtuallyDiamondDerived (0x0x7fd42c07e460) 0

    vptridx=0u vptr=((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 40u)

  VirtuallyDerived (0x0x7fd42c02d3a8) 0 nearly-empty

      primary-for VirtuallyDiamondDerived (0x0x7fd42c07e460)

      subvttidx=8u

    Base (0x0x7fd42c035960) 0 nearly-empty virtual

        primary-for VirtuallyDerived (0x0x7fd42c02d3a8)

        vptridx=40u vbaseoffset=-40

  OtherVirtuallyDerived (0x0x7fd42c02d410) 8 nearly-empty

      lost-primary

      subvttidx=24u vptridx=48u vptr=((& VirtuallyDiamondDerived::_ZTV23VirtuallyDiamondDerived) + 104u)

    Base (0x0x7fd42c035960) alternative-path


Vtable for DoublyVirtuallyDiamondDerived

DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived: 18u entries

0     8u

8     0u

16    0u

24    0u

32    0u

40    (int (*)(...))0

48    (int (*)(...))(& _ZTI29DoublyVirtuallyDiamondDerived)

56    (int (*)(...))DoublyVirtuallyDiamondDerived::~DoublyVirtuallyDiamondDerived

64    (int (*)(...))DoublyVirtuallyDiamondDerived::~DoublyVirtuallyDiamondDerived

72    (int (*)(...))DoublyVirtuallyDiamondDerived::f

80    18446744073709551608u

88    18446744073709551608u

96    18446744073709551608u

104   (int (*)(...))-8

112   (int (*)(...))(& _ZTI29DoublyVirtuallyDiamondDerived)

120   (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n24_N29DoublyVirtuallyDiamondDerivedD1Ev

128   (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n24_N29DoublyVirtuallyDiamondDerivedD0Ev

136   (int (*)(...))DoublyVirtuallyDiamondDerived::_ZTv0_n32_N29DoublyVirtuallyDiamondDerived1fEv


Construction vtable for VirtuallyDerived in DoublyVirtuallyDiamondDerived

DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived: 8u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI16VirtuallyDerived)

40    0u

48    0u

56    (int (*)(...))VirtuallyDerived::f


Construction vtable for OtherVirtuallyDerived in DoublyVirtuallyDiamondDerived

DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived: 15u entries

0     18446744073709551608u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI21OtherVirtuallyDerived)

40    0u

48    0u

56    (int (*)(...))OtherVirtuallyDerived::f

64    8u

72    8u

80    (int (*)(...))8

88    (int (*)(...))(& _ZTI21OtherVirtuallyDerived)

96    0u

104   0u

112   (int (*)(...))OtherVirtuallyDerived::_ZTv0_n32_N21OtherVirtuallyDerived1fEv


VTT for DoublyVirtuallyDiamondDerived

DoublyVirtuallyDiamondDerived::_ZTT29DoublyVirtuallyDiamondDerived: 8u entries

0     ((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)

8     ((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)

16    ((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)

24    ((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 120u)

32    ((& DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

40    ((& DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

48    ((& DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 40u)

56    ((& DoublyVirtuallyDiamondDerived::_ZTC29DoublyVirtuallyDiamondDerived8_21OtherVirtuallyDerived) + 96u)


Class DoublyVirtuallyDiamondDerived

   size=16 align=8

   base size=8 base align=8

DoublyVirtuallyDiamondDerived (0x0x7fd42c07ea10) 0 nearly-empty

    vptridx=0u vptr=((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 56u)

  VirtuallyDerived (0x0x7fd42c02d478) 0 nearly-empty virtual

      primary-for DoublyVirtuallyDiamondDerived (0x0x7fd42c07ea10)

      subvttidx=32u vptridx=8u vbaseoffset=-48

    Base (0x0x7fd42c035a80) 0 nearly-empty virtual

        primary-for VirtuallyDerived (0x0x7fd42c02d478)

        vptridx=16u vbaseoffset=-40

  OtherVirtuallyDerived (0x0x7fd42c02d4e0) 8 nearly-empty virtual

      lost-primary

      subvttidx=48u vptridx=24u vbaseoffset=-56 vptr=((& DoublyVirtuallyDiamondDerived::_ZTV29DoublyVirtuallyDiamondDerived) + 120u)

    Base (0x0x7fd42c035a80) alternative-path


Vtable for MixedVirtuallyDerived

MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived: 13u entries

0     8u

8     (int (*)(...))0

16    (int (*)(...))(& _ZTI21MixedVirtuallyDerived)

24    0u

32    0u

40    (int (*)(...))OtherBase::g

48    0u

56    18446744073709551608u

64    (int (*)(...))-8

72    (int (*)(...))(& _ZTI21MixedVirtuallyDerived)

80    0u

88    0u

96    (int (*)(...))__cxa_pure_virtual


VTT for MixedVirtuallyDerived

MixedVirtuallyDerived::_ZTT21MixedVirtuallyDerived: 2u entries

0     ((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 24u)

8     ((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 80u)


Class MixedVirtuallyDerived

   size=16 align=8

   base size=8 base align=8

MixedVirtuallyDerived (0x0x7fd42c07eee0) 0 nearly-empty

    vptridx=0u vptr=((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 24u)

  Base (0x0x7fd42c035c60) 8 nearly-empty virtual

      vptridx=8u vbaseoffset=-24 vptr=((& MixedVirtuallyDerived::_ZTV21MixedVirtuallyDerived) + 80u)

  OtherBase (0x0x7fd42c035cc0) 0 nearly-empty

      primary-for MixedVirtuallyDerived (0x0x7fd42c07eee0)


Vtable for MixedVirtuallyDiamondDerived

MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived: 15u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI28MixedVirtuallyDiamondDerived)

40    (int (*)(...))MixedVirtuallyDiamondDerived::~MixedVirtuallyDiamondDerived

48    (int (*)(...))MixedVirtuallyDiamondDerived::~MixedVirtuallyDiamondDerived

56    (int (*)(...))MixedVirtuallyDiamondDerived::f

64    (int (*)(...))MixedVirtuallyDiamondDerived::g

72    18446744073709551608u

80    (int (*)(...))-8

88    (int (*)(...))(& _ZTI28MixedVirtuallyDiamondDerived)

96    (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerivedD1Ev

104   (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerivedD0Ev

112   (int (*)(...))MixedVirtuallyDiamondDerived::_ZThn8_N28MixedVirtuallyDiamondDerived1gEv


Construction vtable for VirtuallyDerived (0x0x7fd42c02d750 instance) in MixedVirtuallyDiamondDerived

MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived: 8u entries

0     0u

8     0u

16    0u

24    (int (*)(...))0

32    (int (*)(...))(& _ZTI16VirtuallyDerived)

40    0u

48    0u

56    (int (*)(...))VirtuallyDerived::f


Construction vtable for MixedVirtuallyDerived (0x0x7fd42c0b5380 instance) in MixedVirtuallyDiamondDerived

MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived: 13u entries

0     18446744073709551608u

8     (int (*)(...))0

16    (int (*)(...))(& _ZTI21MixedVirtuallyDerived)

24    0u

32    0u

40    (int (*)(...))OtherBase::g

48    0u

56    8u

64    (int (*)(...))8

72    (int (*)(...))(& _ZTI21MixedVirtuallyDerived)

80    0u

88    0u

96    (int (*)(...))__cxa_pure_virtual


VTT for MixedVirtuallyDiamondDerived

MixedVirtuallyDiamondDerived::_ZTT28MixedVirtuallyDiamondDerived: 7u entries

0     ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)

8     ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

16    ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived0_16VirtuallyDerived) + 40u)

24    ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived) + 24u)

32    ((& MixedVirtuallyDiamondDerived::_ZTC28MixedVirtuallyDiamondDerived8_21MixedVirtuallyDerived) + 80u)

40    ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)

48    ((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 96u)


Class MixedVirtuallyDiamondDerived

   size=16 align=8

   base size=16 base align=8

MixedVirtuallyDiamondDerived (0x0x7fd42c0b5310) 0

    vptridx=0u vptr=((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 40u)

  VirtuallyDerived (0x0x7fd42c02d750) 0 nearly-empty

      primary-for MixedVirtuallyDiamondDerived (0x0x7fd42c0b5310)

      subvttidx=8u

    Base (0x0x7fd42c035d20) 0 nearly-empty virtual

        primary-for VirtuallyDerived (0x0x7fd42c02d750)

        vptridx=40u vbaseoffset=-40

  MixedVirtuallyDerived (0x0x7fd42c0b5380) 8 nearly-empty

      subvttidx=24u vptridx=48u vptr=((& MixedVirtuallyDiamondDerived::_ZTV28MixedVirtuallyDiamondDerived) + 96u)

    Base (0x0x7fd42c035d20) alternative-path

    OtherBase (0x0x7fd42c035d80) 8 nearly-empty

        primary-for MixedVirtuallyDerived (0x0x7fd42c0b5380)


Vtable for VirtuallyMultiplyDerived

VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived: 16u entries

0     8u

8     0u

16    0u

24    0u

32    (int (*)(...))0

40    (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)

48    0u

56    0u

64    (int (*)(...))__cxa_pure_virtual

72    0u

80    18446744073709551608u

88    (int (*)(...))-8

96    (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)

104   0u

112   0u

120   (int (*)(...))OtherBase::g


VTT for VirtuallyMultiplyDerived

VirtuallyMultiplyDerived::_ZTT24VirtuallyMultiplyDerived: 3u entries

0     ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)

8     ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)

16    ((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 104u)


Class VirtuallyMultiplyDerived

   size=16 align=8

   base size=8 base align=8

VirtuallyMultiplyDerived (0x0x7fd42c0b59a0) 0 nearly-empty

    vptridx=0u vptr=((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 48u)

  Base (0x0x7fd42c035e40) 0 nearly-empty virtual

      primary-for VirtuallyMultiplyDerived (0x0x7fd42c0b59a0)

      vptridx=8u vbaseoffset=-40

  OtherBase (0x0x7fd42c035ea0) 8 nearly-empty virtual

      vptridx=16u vbaseoffset=-48 vptr=((& VirtuallyMultiplyDerived::_ZTV24VirtuallyMultiplyDerived) + 104u)


Vtable for OtherVirtuallyMultiplyDerived

OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived: 16u entries

0     8u

8     0u

16    0u

24    0u

32    (int (*)(...))0

40    (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)

48    0u

56    0u

64    (int (*)(...))__cxa_pure_virtual

72    0u

80    18446744073709551608u

88    (int (*)(...))-8

96    (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)

104   0u

112   0u

120   (int (*)(...))OtherBase::g


VTT for OtherVirtuallyMultiplyDerived

OtherVirtuallyMultiplyDerived::_ZTT29OtherVirtuallyMultiplyDerived: 3u entries

0     ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)

8     ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)

16    ((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 104u)


Class OtherVirtuallyMultiplyDerived

   size=16 align=8

   base size=8 base align=8

OtherVirtuallyMultiplyDerived (0x0x7fd42c0b5d90) 0 nearly-empty

    vptridx=0u vptr=((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 48u)

  Base (0x0x7fd42c035f00) 0 nearly-empty virtual

      primary-for OtherVirtuallyMultiplyDerived (0x0x7fd42c0b5d90)

      vptridx=8u vbaseoffset=-40

  OtherBase (0x0x7fd42c035f60) 8 nearly-empty virtual

      vptridx=16u vbaseoffset=-48 vptr=((& OtherVirtuallyMultiplyDerived::_ZTV29OtherVirtuallyMultiplyDerived) + 104u)


Vtable for MultiplyVirtuallyDiamondDerived

MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived: 26u entries

0     16u

8     0u

16    0u

24    0u

32    (int (*)(...))0

40    (int (*)(...))(& _ZTI31MultiplyVirtuallyDiamondDerived)

48    (int (*)(...))MultiplyVirtuallyDiamondDerived::~MultiplyVirtuallyDiamondDerived

56    (int (*)(...))MultiplyVirtuallyDiamondDerived::~MultiplyVirtuallyDiamondDerived

64    (int (*)(...))MultiplyVirtuallyDiamondDerived::f

72    (int (*)(...))MultiplyVirtuallyDiamondDerived::g

80    8u

88    18446744073709551608u

96    18446744073709551608u

104   18446744073709551608u

112   (int (*)(...))-8

120   (int (*)(...))(& _ZTI31MultiplyVirtuallyDiamondDerived)

128   (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZThn8_N31MultiplyVirtuallyDiamondDerivedD1Ev

136   (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZThn8_N31MultiplyVirtuallyDiamondDerivedD0Ev

144   0u

152   18446744073709551600u

160   18446744073709551600u

168   (int (*)(...))-16

176   (int (*)(...))(& _ZTI31MultiplyVirtuallyDiamondDerived)

184   (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n24_N31MultiplyVirtuallyDiamondDerivedD1Ev

192   (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n24_N31MultiplyVirtuallyDiamondDerivedD0Ev

200   (int (*)(...))MultiplyVirtuallyDiamondDerived::_ZTv0_n32_N31MultiplyVirtuallyDiamondDerived1gEv


Construction vtable for VirtuallyMultiplyDerived (0x0x7fd42bcdf230 instance) in MultiplyVirtuallyDiamondDerived

MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived: 16u entries

0     16u

8     0u

16    0u

24    0u

32    (int (*)(...))0

40    (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)

48    0u

56    0u

64    (int (*)(...))__cxa_pure_virtual

72    0u

80    18446744073709551600u

88    (int (*)(...))-16

96    (int (*)(...))(& _ZTI24VirtuallyMultiplyDerived)

104   0u

112   0u

120   (int (*)(...))OtherBase::g


Construction vtable for OtherVirtuallyMultiplyDerived (0x0x7fd42bcdf2a0 instance) in MultiplyVirtuallyDiamondDerived

MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived: 23u entries

0     8u

8     18446744073709551608u

16    18446744073709551608u

24    0u

32    (int (*)(...))0

40    (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)

48    0u

56    0u

64    (int (*)(...))__cxa_pure_virtual

72    0u

80    8u

88    (int (*)(...))8

96    (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)

104   0u

112   0u

120   (int (*)(...))__cxa_pure_virtual

128   0u

136   18446744073709551608u

144   (int (*)(...))-8

152   (int (*)(...))(& _ZTI29OtherVirtuallyMultiplyDerived)

160   0u

168   0u

176   (int (*)(...))OtherBase::g


VTT for MultiplyVirtuallyDiamondDerived

MultiplyVirtuallyDiamondDerived::_ZTT31MultiplyVirtuallyDiamondDerived: 10u entries

0     ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)

8     ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 48u)

16    ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 48u)

24    ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived0_24VirtuallyMultiplyDerived) + 104u)

32    ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 48u)

40    ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 104u)

48    ((& MultiplyVirtuallyDiamondDerived::_ZTC31MultiplyVirtuallyDiamondDerived8_29OtherVirtuallyMultiplyDerived) + 160u)

56    ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)

64    ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 184u)

72    ((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 128u)


Class MultiplyVirtuallyDiamondDerived

   size=24 align=8

   base size=16 base align=8

MultiplyVirtuallyDiamondDerived (0x0x7fd42bcdf1c0) 0

    vptridx=0u vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 48u)

  VirtuallyMultiplyDerived (0x0x7fd42bcdf230) 0 nearly-empty

      primary-for MultiplyVirtuallyDiamondDerived (0x0x7fd42bcdf1c0)

      subvttidx=8u

    Base (0x0x7fd42bce2000) 0 nearly-empty virtual

        primary-for VirtuallyMultiplyDerived (0x0x7fd42bcdf230)

        vptridx=56u vbaseoffset=-40

    OtherBase (0x0x7fd42bce2060) 16 nearly-empty virtual

        vptridx=64u vbaseoffset=-48 vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 184u)

  OtherVirtuallyMultiplyDerived (0x0x7fd42bcdf2a0) 8 nearly-empty

      lost-primary

      subvttidx=32u vptridx=72u vptr=((& MultiplyVirtuallyDiamondDerived::_ZTV31MultiplyVirtuallyDiamondDerived) + 128u)

    Base (0x0x7fd42bce2000) alternative-path

    OtherBase (0x0x7fd42bce2060) alternative-path

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