95 lines · cpp
1// RUN: %clang_cc1 %s -fno-rtti -triple=i386-pc-win32 -emit-llvm -o %t.ll -fdump-vtable-layouts >%t2// RUN: FileCheck %s < %t3 4struct A {5 virtual ~A();6 virtual void z1();7};8 9struct B {10 virtual ~B();11};12 13struct C : A, B {14 // CHECK-LABEL: VFTable for 'A' in 'C' (2 entries).15 // CHECK-NEXT: 0 | C::~C() [scalar deleting]16 // CHECK-NEXT: 1 | void A::z1()17 18 // CHECK-LABEL: VFTable for 'B' in 'C' (1 entry).19 // CHECK-NEXT: 0 | C::~C() [scalar deleting]20 // CHECK-NEXT: [this adjustment: -4 non-virtual]21 22 // CHECK-LABEL: Thunks for 'C::~C()' (1 entry).23 // CHECK-NEXT: 0 | [this adjustment: -4 non-virtual]24 25 // CHECK-LABEL: VFTable indices for 'C' (1 entry).26 // CHECK-NEXT: 0 | C::~C() [scalar deleting]27 virtual ~C();28};29 30void build_vftable(C *obj) { delete obj; }31 32struct D {33 // No virtual destructor here!34 virtual void z4();35};36 37struct E : D, B {38 // Implicit virtual dtor here!39 40 // CHECK-LABEL: VFTable for 'D' in 'E' (1 entry).41 // CHECK-NEXT: 0 | void D::z4()42 43 // CHECK-LABEL: VFTable for 'B' in 'E' (1 entry).44 // CHECK-NEXT: 0 | E::~E() [scalar deleting]45 // CHECK-NEXT: [this adjustment: -4 non-virtual]46 47 // CHECK-LABEL: Thunks for 'E::~E()' (1 entry).48 // CHECK-NEXT: 0 | [this adjustment: -4 non-virtual]49 50 // CHECK-LABEL: VFTable indices for 'E' (1 entry).51 // CHECK-NEXT: -- accessible via vfptr at offset 4 --52 // CHECK-NEXT: 0 | E::~E() [scalar deleting]53};54 55void build_vftable(E *obj) { delete obj; }56 57struct F : D, B {58 // Implicit virtual dtor here!59 60 // CHECK-LABEL: VFTable for 'D' in 'F' (1 entry).61 // CHECK-NEXT: 0 | void D::z4()62 63 // CHECK-LABEL: VFTable for 'B' in 'F' (1 entry).64 // CHECK-NEXT: 0 | F::~F() [scalar deleting]65 // CHECK-NEXT: [this adjustment: -4 non-virtual]66 67 // CHECK-LABEL: Thunks for 'F::~F()' (1 entry).68 // CHECK-NEXT: 0 | [this adjustment: -4 non-virtual]69 70 // CHECK-LABEL: VFTable indices for 'F' (1 entry).71 // CHECK-NEXT: -- accessible via vfptr at offset 4 --72 // CHECK-NEXT: 0 | F::~F() [scalar deleting]73};74 75void build_vftable(F *obj) { delete obj; }76 77struct G : F {78 // CHECK-LABEL: VFTable for 'D' in 'F' in 'G' (1 entry).79 // CHECK-NEXT: 0 | void D::z4()80 81 // CHECK-LABEL: VFTable for 'B' in 'F' in 'G' (1 entry).82 // CHECK-NEXT: 0 | G::~G() [scalar deleting]83 // CHECK-NEXT: [this adjustment: -4 non-virtual]84 85 // CHECK-LABEL: Thunks for 'G::~G()' (1 entry).86 // CHECK-NEXT: 0 | [this adjustment: -4 non-virtual]87 88 // CHECK-LABEL: VFTable indices for 'G' (1 entry).89 // CHECK-NEXT: -- accessible via vfptr at offset 4 --90 // CHECK-NEXT: 0 | G::~G() [scalar deleting]91 virtual ~G();92};93 94void build_vftable(G *obj) { delete obj; }95