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PL286/external/clang/test/Layout/ms-x86-vtordisp.cpp

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// RUN: %clang_cc1 -fno-rtti -fms-extensions -emit-llvm-only -triple i686-pc-win32 -fdump-record-layouts -fsyntax-only %s 2>&1 \
// RUN: | FileCheck %s
// RUN: %clang_cc1 -fno-rtti -fms-extensions -emit-llvm-only -triple x86_64-pc-win32 -fdump-record-layouts -fsyntax-only %s 2>/dev/null \
// RUN: | FileCheck %s -check-prefix CHECK-X64
extern "C" int printf(const char *fmt, ...);
struct B0 {
int a;
B0() : a(0xf00000B0) {}
virtual void f() { printf("B0"); }
};
struct __declspec(align(16)) B1 {
int a;
B1() : a(0xf00000B1) {}
virtual void f() { printf("B1"); }
};
struct __declspec(align(16)) Align16 {};
struct __declspec(align(32)) Align32 {};
struct VAlign16 : virtual Align16 {};
struct VAlign32 : virtual Align32 {};
struct A : virtual B0, virtual B1 {
int a;
A() : a(0xf000000A) {}
virtual void f() { printf("A"); }
virtual void g() { printf("A"); }
};
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct A
// CHECK-NEXT: 0 | (A vftable pointer)
// CHECK-NEXT: 4 | (A vbtable pointer)
// CHECK-NEXT: 8 | int a
// CHECK-NEXT: 16 | (vtordisp for vbase B0)
// CHECK-NEXT: 20 | struct B0 (virtual base)
// CHECK-NEXT: 20 | (B0 vftable pointer)
// CHECK-NEXT: 24 | int a
// CHECK-NEXT: 44 | (vtordisp for vbase B1)
// CHECK-NEXT: 48 | struct B1 (virtual base)
// CHECK-NEXT: 48 | (B1 vftable pointer)
// CHECK-NEXT: 52 | int a
// CHECK-NEXT: | [sizeof=64, align=16
// CHECK-NEXT: | nvsize=12, nvalign=16]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct A
// CHECK-X64-NEXT: 0 | (A vftable pointer)
// CHECK-X64-NEXT: 8 | (A vbtable pointer)
// CHECK-X64-NEXT: 16 | int a
// CHECK-X64-NEXT: 36 | (vtordisp for vbase B0)
// CHECK-X64-NEXT: 40 | struct B0 (virtual base)
// CHECK-X64-NEXT: 40 | (B0 vftable pointer)
// CHECK-X64-NEXT: 48 | int a
// CHECK-X64-NEXT: 76 | (vtordisp for vbase B1)
// CHECK-X64-NEXT: 80 | struct B1 (virtual base)
// CHECK-X64-NEXT: 80 | (B1 vftable pointer)
// CHECK-X64-NEXT: 88 | int a
// CHECK-X64-NEXT: | [sizeof=96, align=16
// CHECK-X64-NEXT: | nvsize=24, nvalign=16]
struct C : virtual B0, virtual B1, VAlign32 {
int a;
C() : a(0xf000000C) {}
virtual void f() { printf("C"); }
virtual void g() { printf("C"); }
};
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct C
// CHECK-NEXT: 0 | (C vftable pointer)
// CHECK-NEXT: 32 | struct VAlign32 (base)
// CHECK-NEXT: 32 | (VAlign32 vbtable pointer)
// CHECK-NEXT: 36 | int a
// CHECK-NEXT: 64 | (vtordisp for vbase B0)
// CHECK-NEXT: 68 | struct B0 (virtual base)
// CHECK-NEXT: 68 | (B0 vftable pointer)
// CHECK-NEXT: 72 | int a
// CHECK-NEXT: 108 | (vtordisp for vbase B1)
// CHECK-NEXT: 112 | struct B1 (virtual base)
// CHECK-NEXT: 112 | (B1 vftable pointer)
// CHECK-NEXT: 116 | int a
// CHECK-NEXT: 128 | struct Align32 (virtual base) (empty)
// CHECK-NEXT: | [sizeof=128, align=32
// CHECK-NEXT: | nvsize=64, nvalign=32]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct C
// CHECK-X64-NEXT: 0 | (C vftable pointer)
// CHECK-X64-NEXT: 32 | struct VAlign32 (base)
// CHECK-X64-NEXT: 32 | (VAlign32 vbtable pointer)
// CHECK-X64-NEXT: 40 | int a
// CHECK-X64-NEXT: 68 | (vtordisp for vbase B0)
// CHECK-X64-NEXT: 72 | struct B0 (virtual base)
// CHECK-X64-NEXT: 72 | (B0 vftable pointer)
// CHECK-X64-NEXT: 80 | int a
// CHECK-X64-NEXT: 108 | (vtordisp for vbase B1)
// CHECK-X64-NEXT: 112 | struct B1 (virtual base)
// CHECK-X64-NEXT: 112 | (B1 vftable pointer)
// CHECK-X64-NEXT: 120 | int a
// CHECK-X64-NEXT: 128 | struct Align32 (virtual base) (empty)
// CHECK-X64-NEXT: | [sizeof=128, align=32
// CHECK-X64-NEXT: | nvsize=64, nvalign=32]
struct __declspec(align(32)) D : virtual B0, virtual B1 {
int a;
D() : a(0xf000000D) {}
virtual void f() { printf("D"); }
virtual void g() { printf("D"); }
};
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct D
// CHECK-NEXT: 0 | (D vftable pointer)
// CHECK-NEXT: 4 | (D vbtable pointer)
// CHECK-NEXT: 8 | int a
// CHECK-NEXT: 32 | (vtordisp for vbase B0)
// CHECK-NEXT: 36 | struct B0 (virtual base)
// CHECK-NEXT: 36 | (B0 vftable pointer)
// CHECK-NEXT: 40 | int a
// CHECK-NEXT: 76 | (vtordisp for vbase B1)
// CHECK-NEXT: 80 | struct B1 (virtual base)
// CHECK-NEXT: 80 | (B1 vftable pointer)
// CHECK-NEXT: 84 | int a
// CHECK-NEXT: | [sizeof=96, align=32
// CHECK-NEXT: | nvsize=12, nvalign=32]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct D
// CHECK-X64-NEXT: 0 | (D vftable pointer)
// CHECK-X64-NEXT: 8 | (D vbtable pointer)
// CHECK-X64-NEXT: 16 | int a
// CHECK-X64-NEXT: 36 | (vtordisp for vbase B0)
// CHECK-X64-NEXT: 40 | struct B0 (virtual base)
// CHECK-X64-NEXT: 40 | (B0 vftable pointer)
// CHECK-X64-NEXT: 48 | int a
// CHECK-X64-NEXT: 76 | (vtordisp for vbase B1)
// CHECK-X64-NEXT: 80 | struct B1 (virtual base)
// CHECK-X64-NEXT: 80 | (B1 vftable pointer)
// CHECK-X64-NEXT: 88 | int a
// CHECK-X64-NEXT: | [sizeof=96, align=32
// CHECK-X64-NEXT: | nvsize=24, nvalign=32]
struct AT {
virtual ~AT(){}
};
struct CT : virtual AT {
virtual ~CT();
};
CT::~CT(){}
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct CT
// CHECK-NEXT: 0 | (CT vbtable pointer)
// CHECK-NEXT: 4 | struct AT (virtual base)
// CHECK-NEXT: 4 | (AT vftable pointer)
// CHECK-NEXT: | [sizeof=8, align=4
// CHECK-NEXT: | nvsize=4, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct CT
// CHECK-X64-NEXT: 0 | (CT vbtable pointer)
// CHECK-X64-NEXT: 8 | struct AT (virtual base)
// CHECK-X64-NEXT: 8 | (AT vftable pointer)
// CHECK-X64-NEXT: | [sizeof=16, align=8
// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
struct XA {
XA() { printf("XA"); }
long long ll;
};
struct XB : XA {
XB() { printf("XB"); }
virtual void foo() {}
int b;
};
struct XC : virtual XB {
XC() { printf("XC"); }
virtual void foo() {}
};
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct XC
// CHECK-NEXT: 0 | (XC vbtable pointer)
// CHECK-NEXT: 4 | (vtordisp for vbase XB)
// CHECK-NEXT: 8 | struct XB (virtual base)
// CHECK-NEXT: 8 | (XB vftable pointer)
// CHECK-NEXT: 16 | struct XA (base)
// CHECK-NEXT: 16 | long long ll
// CHECK-NEXT: 24 | int b
// CHECK-NEXT: | [sizeof=32, align=8
// CHECK-NEXT: | nvsize=4, nvalign=8]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct XC
// CHECK-X64-NEXT: 0 | (XC vbtable pointer)
// CHECK-X64-NEXT: 12 | (vtordisp for vbase XB)
// CHECK-X64-NEXT: 16 | struct XB (virtual base)
// CHECK-X64-NEXT: 16 | (XB vftable pointer)
// CHECK-X64-NEXT: 24 | struct XA (base)
// CHECK-X64-NEXT: 24 | long long ll
// CHECK-X64-NEXT: 32 | int b
// CHECK-X64-NEXT: | [sizeof=40, align=8
// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
namespace pragma_test1 {
// No overrides means no vtordisps by default.
struct A { virtual ~A(); virtual void foo(); int a; };
struct B : virtual A { virtual ~B(); virtual void bar(); int b; };
struct C : virtual B { int c; };
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct pragma_test1::C
// CHECK-NEXT: 0 | (C vbtable pointer)
// CHECK-NEXT: 4 | int c
// CHECK-NEXT: 8 | struct pragma_test1::A (virtual base)
// CHECK-NEXT: 8 | (A vftable pointer)
// CHECK-NEXT: 12 | int a
// CHECK-NEXT: 16 | struct pragma_test1::B (virtual base)
// CHECK-NEXT: 16 | (B vftable pointer)
// CHECK-NEXT: 20 | (B vbtable pointer)
// CHECK-NEXT: 24 | int b
// CHECK-NEXT: | [sizeof=28, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
}
namespace pragma_test2 {
struct A { virtual ~A(); virtual void foo(); int a; };
#pragma vtordisp(push,2)
struct B : virtual A { virtual ~B(); virtual void bar(); int b; };
struct C : virtual B { int c; };
#pragma vtordisp(pop)
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct pragma_test2::C
// CHECK-NEXT: 0 | (C vbtable pointer)
// CHECK-NEXT: 4 | int c
// CHECK-NEXT: 8 | (vtordisp for vbase A)
// CHECK-NEXT: 12 | struct pragma_test2::A (virtual base)
// CHECK-NEXT: 12 | (A vftable pointer)
// CHECK-NEXT: 16 | int a
// By adding a virtual method and vftable to B, now we need a vtordisp.
// CHECK-NEXT: 20 | (vtordisp for vbase B)
// CHECK-NEXT: 24 | struct pragma_test2::B (virtual base)
// CHECK-NEXT: 24 | (B vftable pointer)
// CHECK-NEXT: 28 | (B vbtable pointer)
// CHECK-NEXT: 32 | int b
// CHECK-NEXT: | [sizeof=36, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
}
namespace pragma_test3 {
struct A { virtual ~A(); virtual void foo(); int a; };
#pragma vtordisp(push,2)
struct B : virtual A { virtual ~B(); virtual void foo(); int b; };
struct C : virtual B { int c; };
#pragma vtordisp(pop)
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct pragma_test3::C
// CHECK-NEXT: 0 | (C vbtable pointer)
// CHECK-NEXT: 4 | int c
// CHECK-NEXT: 8 | (vtordisp for vbase A)
// CHECK-NEXT: 12 | struct pragma_test3::A (virtual base)
// CHECK-NEXT: 12 | (A vftable pointer)
// CHECK-NEXT: 16 | int a
// No vtordisp before B! It doesn't have its own vftable.
// CHECK-NEXT: 20 | struct pragma_test3::B (virtual base)
// CHECK-NEXT: 20 | (B vbtable pointer)
// CHECK-NEXT: 24 | int b
// CHECK-NEXT: | [sizeof=28, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
}
namespace pragma_test4 {
struct A {
A();
virtual void foo();
int a;
};
// Make sure the pragma applies to class template decls before they've been
// instantiated.
#pragma vtordisp(push,2)
template <typename T>
struct B : virtual A {
B();
virtual ~B();
virtual void bar();
T b;
};
#pragma vtordisp(pop)
struct C : virtual B<int> { int c; };
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct pragma_test4::C
// CHECK-NEXT: 0 | (C vbtable pointer)
// CHECK-NEXT: 4 | int c
// Pragma applies to B, which has vbase A.
// CHECK-NEXT: 8 | (vtordisp for vbase A)
// CHECK-NEXT: 12 | struct pragma_test4::A (virtual base)
// CHECK-NEXT: 12 | (A vftable pointer)
// CHECK-NEXT: 16 | int a
// Pragma does not apply to C, and B doesn't usually need a vtordisp in C.
// CHECK-NEXT: 20 | struct pragma_test4::B<int> (virtual base)
// CHECK-NEXT: 20 | (B vftable pointer)
// CHECK-NEXT: 24 | (B vbtable pointer)
// CHECK-NEXT: 28 | int b
// CHECK-NEXT: | [sizeof=32, align=4
// CHECK-NEXT: | nvsize=8, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
}
struct GA {
virtual void fun() {}
};
struct GB: public GA {};
struct GC: public virtual GA {
virtual void fun() {}
GC() {}
};
struct GD: public virtual GC, public virtual GB {};
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct GD
// CHECK-NEXT: 0 | (GD vbtable pointer)
// CHECK-NEXT: 4 | (vtordisp for vbase GA)
// CHECK-NEXT: 8 | struct GA (virtual base)
// CHECK-NEXT: 8 | (GA vftable pointer)
// CHECK-NEXT: 12 | struct GC (virtual base)
// CHECK-NEXT: 12 | (GC vbtable pointer)
// CHECK-NEXT: 16 | struct GB (virtual base)
// CHECK-NEXT: 16 | struct GA (primary base)
// CHECK-NEXT: 16 | (GA vftable pointer)
// CHECK-NEXT: | [sizeof=20, align=4
// CHECK-NEXT: | nvsize=4, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct GD
// CHECK-X64-NEXT: 0 | (GD vbtable pointer)
// CHECK-X64-NEXT: 12 | (vtordisp for vbase GA)
// CHECK-X64-NEXT: 16 | struct GA (virtual base)
// CHECK-X64-NEXT: 16 | (GA vftable pointer)
// CHECK-X64-NEXT: 24 | struct GC (virtual base)
// CHECK-X64-NEXT: 24 | (GC vbtable pointer)
// CHECK-X64-NEXT: 32 | struct GB (virtual base)
// CHECK-X64-NEXT: 32 | struct GA (primary base)
// CHECK-X64-NEXT: 32 | (GA vftable pointer)
// CHECK-X64-NEXT: | [sizeof=40, align=8
// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
struct HA {
virtual void fun() {}
};
#pragma vtordisp(push, 2)
struct HB : virtual HA {};
#pragma vtordisp(pop)
#pragma vtordisp(push, 0)
struct HC : virtual HB {};
#pragma vtordisp(pop)
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct HC
// CHECK-NEXT: 0 | (HC vbtable pointer)
// CHECK-NEXT: 4 | (vtordisp for vbase HA)
// CHECK-NEXT: 8 | struct HA (virtual base)
// CHECK-NEXT: 8 | (HA vftable pointer)
// CHECK-NEXT: 12 | struct HB (virtual base)
// CHECK-NEXT: 12 | (HB vbtable pointer)
// CHECK-NEXT: | [sizeof=16, align=4
// CHECK-NEXT: | nvsize=4, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct HC
// CHECK-X64-NEXT: 0 | (HC vbtable pointer)
// CHECK-X64-NEXT: 12 | (vtordisp for vbase HA)
// CHECK-X64-NEXT: 16 | struct HA (virtual base)
// CHECK-X64-NEXT: 16 | (HA vftable pointer)
// CHECK-X64-NEXT: 24 | struct HB (virtual base)
// CHECK-X64-NEXT: 24 | (HB vbtable pointer)
// CHECK-X64-NEXT: | [sizeof=32, align=8
// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
struct IA {
virtual void f();
};
struct __declspec(dllexport) IB : virtual IA {
virtual void f() = 0;
IB() {}
};
// CHECK: *** Dumping AST Record Layout
// CHECK: *** Dumping AST Record Layout
// CHECK-NEXT: 0 | struct IB
// CHECK-NEXT: 0 | (IB vbtable pointer)
// CHECK-NEXT: 4 | struct IA (virtual base)
// CHECK-NEXT: 4 | (IA vftable pointer)
// CHECK-NEXT: | [sizeof=8, align=4
// CHECK-NEXT: | nvsize=4, nvalign=4]
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64: *** Dumping AST Record Layout
// CHECK-X64-NEXT: 0 | struct IB
// CHECK-X64-NEXT: 0 | (IB vbtable pointer)
// CHECK-X64-NEXT: 8 | struct IA (virtual base)
// CHECK-X64-NEXT: 8 | (IA vftable pointer)
// CHECK-X64-NEXT: | [sizeof=16, align=8
// CHECK-X64-NEXT: | nvsize=8, nvalign=8]
int a[
sizeof(A)+
sizeof(C)+
sizeof(D)+
sizeof(CT)+
sizeof(XC)+
sizeof(pragma_test1::C)+
sizeof(pragma_test2::C)+
sizeof(pragma_test3::C)+
sizeof(pragma_test4::C)+
sizeof(GD)+
sizeof(HC)+
sizeof(IB)+
0];