codeql/cpp/ql/test/library-tests/padding/cpp.cpp at codeql-cli-2.11.3 · github/codeql · GitHub

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#include "size_asserts.h"

CASSERT_MSVC(sizeof(wchar_t) == 2);

CASSERT_GCC(sizeof(wchar_t) == 4);

struct ReferencesAndPointers {

// 0

char c1;

// 1

// Pad 7(GCC64, MSVC64); 3(GCC32, MSVC32)

// 8(GCC64, MSVC64); 4(GCC32, MSVC32)

short& r2;

// 16(GCC64, MSVC64); 8(GCC32, MSVC32)

wchar_t wc3;

// 18(GCC64, MSVC64); 10(GCC32, MSVC32)

// Pad 6(GCC64, MSVC64); 2(GCC32, MSVC32)

// 24(GCC64, MSVC64); 12(GCC32, MSVC32)

long long* p4;

// 32(GCC64, MSVC64); 16(GCC32, MSVC32)

};

CASSERT_MSVC64(sizeof(struct ReferencesAndPointers) == 32);

CASSERT_MSVC32(sizeof(struct ReferencesAndPointers) == 16);

CASSERT_GCC64(sizeof(struct ReferencesAndPointers) == 32);

CASSERT_GCC32(sizeof(struct ReferencesAndPointers) == 16);

enum E {

E_None

};

CASSERT(sizeof(E) == sizeof(int));

enum E_char : char {

E_char_None

};

CASSERT(sizeof(E_char) == sizeof(char));

enum E_short : short {

E_short_None

};

CASSERT(sizeof(E_short) == sizeof(short));

enum E_int : int {

E_int_None

};

CASSERT(sizeof(E_int) == sizeof(int));

enum E_long : long {

E_long_None

};

CASSERT(sizeof(E_long) == sizeof(long));

enum E_longlong : long long {

E_longlong_None

};

CASSERT(sizeof(E_longlong) == sizeof(long long));

enum class EC {

None

};

CASSERT(sizeof(EC) == sizeof(int));

enum class EC_char : char {

None

};

CASSERT(sizeof(EC_char) == sizeof(char));

enum class EC_short : short {

None

};

CASSERT(sizeof(EC_short) == sizeof(short));

enum class EC_int : int {

None

};

CASSERT(sizeof(EC_int) == sizeof(int));

enum class EC_long : long {

None

};

CASSERT(sizeof(EC_long) == sizeof(long));

enum class EC_longlong : long long {

None

};

CASSERT(sizeof(EC_longlong) == sizeof(long long));

struct Enums_Packed {

// 0

E_longlong ell;

// 8

E_long el;

// 16(GCC64); 12(GCC32, MSVC)

E_int ei;

// 20(GCC64); 16(GCC32, MSVC)

E e;

// 24(GCC64); 20(GCC32, MSVC)

E_short es;

// 26(GCC64); 22(GCC32, MSVC)

E_char ec;

// 27(GCC64); 23(GCC32, MSVC)

// Pad 5(GCC64); 1(GCC32, MSVC)

// 32(GCC64); 24(GCC32, MSVC)

};

CASSERT_GCC64(sizeof(Enums_Packed) == 32);

CASSERT_GCC32(sizeof(Enums_Packed) == 24);

CASSERT_MSVC(sizeof(Enums_Packed) == 24);

struct Enums_MixedBitfields {

// 0

E_short ei1 : 8;

// 1

short s2 : 8;

// 2

};

CASSERT_GCC(sizeof(Enums_MixedBitfields) == 2);

CASSERT_MSVC(sizeof(Enums_MixedBitfields) == 2);

struct Enums_MixedBitfields_Padded {

// 0

E_short ei1 : 8;

// 1

// Pad 1(MSVC); 0(GCC)

// 2(MSVC); 1(GCC)

unsigned char uc2 : 8;

// 3(MSVC); 2(GCC)

// Pad 1(MSVC); 0(GCC)

// 4(MSVC); 2(GCC)

};

CASSERT_GCC(sizeof(Enums_MixedBitfields_Padded) == 2);

CASSERT_MSVC(sizeof(Enums_MixedBitfields_Padded) == 4);

struct Base_Empty {

// 0

// Pad 1

// 1

};

CASSERT(sizeof(Base_Empty) == 1);

struct Derived_EmptyBase : Base_Empty {

// 0

// Base class Base_Empty (Empty Base Optimization)

// 0

int n1;

// 4

};

CASSERT(sizeof(Derived_EmptyBase) == 4);

struct Base_NoPadding {

// 0

int n1;

// 4

};

CASSERT(sizeof(Base_NoPadding) == 4);

struct Derived_NoBasePadding : Base_NoPadding {

// 0

// Base class Base_NoPadding

// 4

int n2;

// 8

};

CASSERT(sizeof(Derived_NoBasePadding) == 8);

struct Base_Padding {

// 0

float f1;

// 4

short s1;

// 6

// Pad 2

// 8

};

CASSERT(sizeof(Base_Padding) == 8);

struct Derived_BasePadding : Base_Padding {

// 0

// Base class Base_Padding

// 8

short s2;

// 10

// Pad 2

// 12

};

CASSERT(sizeof(Derived_BasePadding) == 12);

struct Intermediate_NoFields : Base_NoPadding {

// 0

// Base class Base_NoPadding

// 4

};

CASSERT(sizeof(Intermediate_NoFields) == 4);

struct Derived_NonEmptyBaseWithNoFields : Intermediate_NoFields {

// 0

// Base class Intermediate_NoFields

// 4

int n2;

// 8

};

CASSERT(sizeof(Derived_NonEmptyBaseWithNoFields) == 8);

struct MultipleInheritance : Base_NoPadding, Base_Padding {

int n3;

};

CASSERT(sizeof(MultipleInheritance) == 16);

struct StaticMemberVariables {

// 0

static int s_n1;

// 0

float f1;

// 4

static int s_n2;

// 4

};

CASSERT(sizeof(StaticMemberVariables) == 4);

struct VirtualInheritance : virtual Base_NoPadding {

int n3;

};

struct Derived_EmptyBase_Conflict1 : Base_Empty {

// 0

// Base class Base_Empty (GCC Only: no Empty Base Optimization due to conflict with m1)

// 1(GCC); 0(MSVC)

Base_Empty m1;

// 2(GCC); 1(MSVC)

};

CASSERT_GCC(sizeof(Derived_EmptyBase_Conflict1) == 2);

CASSERT_MSVC(sizeof(Derived_EmptyBase_Conflict1) == 1);

struct Derived_EmptyBase_Conflict2 : Base_Empty {

// 0

// Base class Base_Empty (GCC Only: no Empty Base Optimization due to conflict with m1)

// 1(GCC); 0(MSVC)

// Pad 3(GCC); 0(MSVC)

// 4(GCC); 0(MSVC)

Derived_EmptyBase m1;

// 8(GCC); 4(MSVC)

};

CASSERT_GCC(sizeof(Derived_EmptyBase_Conflict2) == 8);

CASSERT_MSVC(sizeof(Derived_EmptyBase_Conflict2) == 4);

struct Base_Empty2 : Base_Empty {

// 0

// Base class Base_Empty (Empty Base Optimization)

// 0

// Pad 1

// 1

};

CASSERT(sizeof(Base_Empty2) == 1);

struct Derived_EmptyBase_Conflict3 : Base_Empty2 {

// 0

// Base class Base_Empty2 (GCC Only: no Empty Base Optimization due to conflict with m1)

// 1(GCC); 0(MSVC)

Base_Empty m1;

// 2(GCC); 1(MSVC)

};

CASSERT_GCC(sizeof(Derived_EmptyBase_Conflict3) == 2);

CASSERT_MSVC(sizeof(Derived_EmptyBase_Conflict3) == 1);

struct Base_NoPaddingButSmallAlignment {

// 0

short s1;

// 2

};

CASSERT(sizeof(Base_NoPaddingButSmallAlignment) == 2);

struct Derived_NoBasePaddingButNeedsAlignmentPadding : Base_NoPaddingButSmallAlignment {

// 0

// Base class Base_NoPaddingButSmallAlignment

// 2

// Pad 2

// 4

int n1;

// 8

};

CASSERT(sizeof(Derived_NoBasePaddingButNeedsAlignmentPadding) == 8);

codeql/cpp/ql/test/library-tests/padding/cpp.cpp at codeql-cli-2.11.3 · github/codeql · GitHub

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