codeql/cpp/ql/test/library-tests/ir/ir/ir.cpp

void Constants() {
    char c_i = 1;
    char c_c = 'A';

    signed char sc_i = -1;
    signed char sc_c = 'A';

    unsigned char uc_i = 5;
    unsigned char uc_c = 'A';

    short s = 5;
    unsigned short us = 5;

    int i = 5;
    unsigned int ui = 5;

    long l = 5;
    unsigned long ul = 5;

    long long ll_i = 5;
    long long ll_ll = 5LL;
    unsigned long long ull_i = 5;
    unsigned long long ull_ull = 5ULL;

    bool b_t = true;
    bool b_f = false;

    wchar_t wc_i = 5;
    wchar_t wc_c = L'A';

    char16_t c16 = u'A';
    char32_t c32 = U'A';

    float f_i = 1;
    float f_f = 1.0f;
    float f_d = 1.0;

    double d_i = 1;
    double d_f = 1.0f;
    double d_d = 1.0;
}

void Foo() {
    int x = 5 + 12;
    short y = 7;
    y = x + y;
    x = x * y;
}

void IntegerOps(int x, int y) {
    int z;

    z = x + y;
    z = x - y;
    z = x * y;
    z = x / y;
    z = x % y;

    z = x & y;
    z = x | y;
    z = x ^ y;

    z = x << y;
    z = x >> y;

    z = x;

    z += x;
    z -= x;
    z *= x;
    z /= x;
    z %= x;
    
    z &= x;
    z |= x;
    z ^= x;

    z <<= x;
    z >>= x;

    z = +x;
    z = -x;
    z = ~x;
    z = !x;
}

void IntegerCompare(int x, int y) {
    bool b;

    b = x == y;
    b = x != y;
    b = x < y;
    b = x > y;
    b = x <= y;
    b = x >= y;
}

void IntegerCrement(int x) {
    int y;

    y = ++x;
    y = --x;
    y = x++;
    y = x--;
}

void IntegerCrement_LValue(int x) {
    int* p;

    p = &(++x);
    p = &(--x);
}

void FloatOps(double x, double y) {
    double z;

    z = x + y;
    z = x - y;
    z = x * y;
    z = x / y;

    z = x;

    z += x;
    z -= x;
    z *= x;
    z /= x;

    z = +x;
    z = -x;
}

void FloatCompare(double x, double y) {
    bool b;

    b = x == y;
    b = x != y;
    b = x < y;
    b = x > y;
    b = x <= y;
    b = x >= y;
}

void FloatCrement(float x) {
    float y;

    y = ++x;
    y = --x;
    y = x++;
    y = x--;
}

void PointerOps(int* p, int i) {
    int* q;
    bool b;

    q = p + i;
    q = i + p;
    q = p - i;
    i = p - q;

    q = p;

    q += i;
    q -= i;

    b = p;
    b = !p;
}

void ArrayAccess(int* p, int i) {
    int x;

    x = p[i];
    x = i[p];

    p[i] = x;
    i[p] = x;

    int a[10];
    x = a[i];
    x = i[a];
    a[i] = x;
    i[a] = x;
}

void StringLiteral(int i) {
    char c = "Foo"[i];
    wchar_t* pwc = L"Bar";
    wchar_t wc = pwc[i];
}

void PointerCompare(int* p, int* q) {
    bool b;

    b = p == q;
    b = p != q;
    b = p < q;
    b = p > q;
    b = p <= q;
    b = p >= q;
}

void PointerCrement(int* p) {
    int* q;

    q = ++p;
    q = --p;
    q = p++;
    q = p--;
}

void CompoundAssignment() {
    // No conversion necessary
    int x = 5;
    x += 7;

    // Left side is converted to 'int'
    short y = 5;
    y += x;

    // Technically the left side is promoted to int, but we don't model that
    y <<= 1;

    // Left side is converted to 'float'
    long z = 7;
    z += 2.0f;
}

void UninitializedVariables() {
    int x;
    int y = x;
}

int Parameters(int x, int y) {
    return x % y;
}

void IfStatements(bool b, int x, int y) {
    if (b) {
    }

    if (b) {
        x = y;
    }

    if (x < 7)
        x = 2;
    else
        x = 7;
}

void WhileStatements(int n) {
    while (n > 0) {
        n -= 1;
    }
}

void DoStatements(int n) {
    do {
        n -= 1;
    } while (n > 0);
}

void For_Empty() {
    int j;
    for (;;) {
        ;
    }
}

void For_Init() {
    for (int i = 0;;) {
        ;
    }
}

void For_Condition() {
    int i = 0;
    for (; i < 10;) {
        ;
    }
}

void For_Update() {
    int i = 0;
    for (;; i += 1) {
        ;
    }
}

void For_InitCondition() {
    for (int i = 0; i < 10;) {
        ;
    }
}

void For_InitUpdate() {
    for (int i = 0;; i += 1) {
        ;
    }
}

void For_ConditionUpdate() {
    int i = 0;
    for (; i < 10; i += 1) {
        ;
    }
}

void For_InitConditionUpdate() {
    for (int i = 0; i < 10; i += 1) {
        ;
    }
}

void For_Break() {
    for (int i = 0; i < 10; i += 1) {
        if (i == 5) {
            break;
        }
    }
}

void For_Continue_Update() {
    for (int i = 0; i < 10; i += 1) {
        if (i == 5) {
            continue;
        }
    }
}

void For_Continue_NoUpdate() {
    for (int i = 0; i < 10;) {
        if (i == 5) {
            continue;
        }
    }
}

int Dereference(int* p) {
    *p = 1;
    return *p;
}

int g;

int* AddressOf() {
    return &g;
}

void Break(int n) {
    while (n > 0) {
        if (n == 1)
            break;
        n -= 1;
    }
}

void Continue(int n) {
    do {
        if (n == 1) {
            continue;
        }
        n -= 1;
    } while (n > 0);
}

void VoidFunc();
int Add(int x, int y);

void Call() {
    VoidFunc();
}

int CallAdd(int x, int y) {
    return Add(x, y);
}

int Comma(int x, int y) {
    return VoidFunc(), CallAdd(x, y);
}

void Switch(int x) {
    int y;
    switch (x) {
        y = 1234;

        case -1:
            y = -1;
            break;

        case 1:
        case 2:
            y = 1;
            break;
        
        case 3:
            y = 3;
        case 4:
            y = 4;
            break;

        default:
            y = 0;
            break;

        y = 5678;
    }
}

struct Point {
    int x;
    int y;
};

struct Rect {
    Point topLeft;
    Point bottomRight;
};

Point ReturnStruct(Point pt) {
    return pt;
}

void FieldAccess() {
    Point pt;
    pt.x = 5;
    pt.y = pt.x;
    int* p = &pt.y;
}

void LogicalOr(bool a, bool b) {
    int x;
    if (a || b) {
        x = 7;
    }

    if (a || b) {
        x = 1;
    }
    else {
        x = 5;
    }
}

void LogicalAnd(bool a, bool b) {
    int x;
    if (a && b) {
        x = 7;
    }

    if (a && b) {
        x = 1;
    }
    else {
        x = 5;
    }
}

void LogicalNot(bool a, bool b) {
    int x;
    if (!a) {
        x = 1;
    }

    if (!(a && b)) {
        x = 2;
    }
    else {
        x = 3;
    }
}

void ConditionValues(bool a, bool b) {
    bool x;
    x = a && b;
    x = a || b;
    x = !(a || b);
}

void Conditional(bool a, int x, int y) {
    int z = a ? x : y;
}

void Conditional_LValue(bool a) {
    int x;
    int y;
    (a ? x : y) = 5;
}

void Conditional_Void(bool a) {
    a ? VoidFunc() : VoidFunc();
}

void Nullptr() {
    int* p = nullptr;
    int* q = 0;
    p = nullptr;
    q = 0;
}

void InitList(int x, float f) {
    Point pt1 = { x, f };
    Point pt2 = { x };
    Point pt3 = {};

    int x1 = { 1 };
    int x2 = {};
}

void NestedInitList(int x, float f) {
    Rect r1 = {};
    Rect r2 = { { x, f } };
    Rect r3 = { { x, f }, { x, f } };
    Rect r4 = { { x }, { x } };
}

void ArrayInit(int x, float f) {
    int a1[3] = {};
    int a2[3] = { x, f, 0 };
    int a3[3] = { x };
}

union U {
    double d;
    int i;
};

void UnionInit(int x, float f) {
    U u1 = { f };
//    U u2 = {};  Waiting for fix
}

void EarlyReturn(int x, int y) {
    if (x < y) {
        return;
    }

    y = x;
}

int EarlyReturnValue(int x, int y) {
    if (x < y) {
        return x;
    }

    return x + y;
}

int CallViaFuncPtr(int (*pfn)(int)) {
    return pfn(5);
}

typedef enum {
    E_0,
    E_1
} E;

int EnumSwitch(E e) {
    switch (e) {
        case E_0:
            return 0;
        case E_1:
            return 1;
        default:
            return -1;
    }
}

void InitArray() {
    char a_pad[32] = ""; 
    char a_nopad[4] = "foo";
    char a_infer[] = "blah";
    char b[2];
    char c[2] = {};
    char d[2] = { 0 };
    char e[2] = { 0, 1 };
    char f[3] = { 0 };
}

void VarArgFunction(const char* s, ...);

void VarArgs() {
    VarArgFunction("%d %s", 1, "string");
}

int FuncPtrTarget(int);

void SetFuncPtr() {
    int (*pfn)(int) = FuncPtrTarget;
    pfn = &FuncPtrTarget;
    pfn = *FuncPtrTarget;
    pfn = ***&FuncPtrTarget;
}

struct String {
    String();
    String(const String&);
    String(String&&);
    String(const char*);
    ~String();

    String& operator=(const String&);
    String& operator=(String&&);

    const char* c_str() const;

private:
    const char* p;
};

String ReturnObject();

void DeclareObject() {
    String s1;
    String s2("hello");
    String s3 = ReturnObject();
    String s4 = String("test");
}

void CallMethods(String& r, String* p, String s) {
    r.c_str();
    p->c_str();
    s.c_str();
}

class C {
public:
    static int StaticMemberFunction(int x) {
        return x;
    }

    int InstanceMemberFunction(int x) {
        return x;
    }

    virtual int VirtualMemberFunction(int x) {
        return x;
    }

    void FieldAccess() {
        this->m_a = 0;
        (*this).m_a = 1;
        m_a = 2;
        int x;
        x = this->m_a;
        x = (*this).m_a;
        x = m_a;
    }

    void MethodCalls() {
        this->InstanceMemberFunction(0);
        (*this).InstanceMemberFunction(1);
        InstanceMemberFunction(2);
    }
    
    C() :
        m_a(1),
        m_c(3),
        m_e{},
        m_f("test")
    {
    }

private:
    int m_a;
    String m_b;
    char m_c;
    float m_d;
    void* m_e;
    String m_f;
};

int DerefReference(int& r) {
    return r;
}

int& TakeReference() {
    return g;
}

String& ReturnReference();

void InitReference(int x) {
    int& r = x;
    int& r2 = r;
    const String& r3 = ReturnReference();
}

void ArrayReferences() {
  int a[10];
  int (&ra)[10] = a;
  int x = ra[5];
}

void FunctionReferences() {
  int(&rfn)(int) = FuncPtrTarget;
  int(*pfn)(int) = rfn;
  rfn(5);
}

template<typename T>
T min(T x, T y) {
  return (x < y) ? x : y;
}

int CallMin(int x, int y) {
  return min(x, y);
}

template<typename T>
struct Outer {
  template<typename U, typename V>
  static T Func(U x, V y) {
    return T();
  }
};

double CallNestedTemplateFunc() {
  return Outer<long>::Func<void*, char>(nullptr, 'o');
}

void TryCatch(bool b) {
  try {
    int x = 5;
    if (b) {
      throw "string literal";
    }
    else if (x < 2) {
      x = b ? 7 : throw String("String object");
    }
    x = 7;
  }
  catch (const char* s) {
    throw String(s);
  }
  catch (const String& e) {
  }
  catch (...) {
    throw;
  }
}

struct Base {
  String base_s;

  Base() {
  }
  ~Base() {
  }
};

struct Middle : Base {
  String middle_s;

  Middle() {
  }
  ~Middle() {
  }
};

struct Derived : Middle {
  String derived_s;

  Derived() {
  }
  ~Derived() {
  }
};

struct MiddleVB1 : virtual Base {
  String middlevb1_s;

  MiddleVB1() {
  }
  ~MiddleVB1() {
  }
};

struct MiddleVB2 : virtual Base {
  String middlevb2_s;

  MiddleVB2() {
  }
  ~MiddleVB2() {
  }
};

struct DerivedVB : MiddleVB1, MiddleVB2 {
  String derivedvb_s;

  DerivedVB() {
  }
  ~DerivedVB() {
  }
};

void HierarchyConversions() {
  Base b;
  Middle m;
  Derived d;

  Base* pb = &b;
  Middle* pm = &m;
  Derived* pd = &d;

  b = m;
  b = (Base)m;
  b = static_cast<Base>(m);
  pb = pm;
  pb = (Base*)pm;
  pb = static_cast<Base*>(pm);
  pb = reinterpret_cast<Base*>(pm);

  m = (Middle&)b;
  m = static_cast<Middle&>(b);
  pm = (Middle*)pb;
  pm = static_cast<Middle*>(pb);
  pm = reinterpret_cast<Middle*>(pb);

  b = d;
  b = (Base)d;
  b = static_cast<Base>(d);
  pb = pd;
  pb = (Base*)pd;
  pb = static_cast<Base*>(pd);
  pb = reinterpret_cast<Base*>(pd);

  d = (Derived&)b;
  d = static_cast<Derived&>(b);
  pd = (Derived*)pb;
  pd = static_cast<Derived*>(pb);
  pd = reinterpret_cast<Derived*>(pb);

  MiddleVB1* pmv = nullptr;
  DerivedVB* pdv = nullptr;
  pb = pmv;
  pb = pdv;
}

struct PolymorphicBase {
  virtual ~PolymorphicBase();
};

struct PolymorphicDerived : PolymorphicBase {
};

void DynamicCast() {
  PolymorphicBase b;
  PolymorphicDerived d;

  PolymorphicBase* pb = &b;
  PolymorphicDerived* pd = &d;

  // These two casts are represented as BaseClassCasts because they can be resolved at compile time.
  pb = dynamic_cast<PolymorphicBase*>(pd);
  PolymorphicBase& rb = dynamic_cast<PolymorphicBase&>(d);

  pd = dynamic_cast<PolymorphicDerived*>(pb);
  PolymorphicDerived& rd = dynamic_cast<PolymorphicDerived&>(b);

  void* pv = dynamic_cast<void*>(pb);
  const void* pcv = dynamic_cast<const void*>(pd);
}

String::String() :
  String("") {  // Delegating constructor call
}

void ArrayConversions() {
  char a[5];
  const char* p = a;
  p = "test";
  p = &a[0];
  p = &"test"[0];
  char (&ra)[5] = a;
  const char (&rs)[5] = "test";
  const char (*pa)[5] = &a;
  pa = &"test";
}

void FuncPtrConversions(int(*pfn)(int), void* p) {
  p = (void*)pfn;
  pfn = (int(*)(int))p;
}

void VAListUsage(int x, __builtin_va_list args) {
  __builtin_va_list args2;
  __builtin_va_copy(args2, args);
  double d = __builtin_va_arg(args, double);
  float f = __builtin_va_arg(args, int);
  __builtin_va_end(args2);
}

void VarArgUsage(int x, ...) {
  __builtin_va_list args;

  __builtin_va_start(args, x);
  __builtin_va_list args2;
  __builtin_va_copy(args2, args);
  double d = __builtin_va_arg(args, double);
  float f = __builtin_va_arg(args, int);
  __builtin_va_end(args);
  VAListUsage(x, args2);
  __builtin_va_end(args2);
}

void CastToVoid(int x) {
  (void)x;
}

void ConstantConditions(int x) {
  bool a = true && true;
  int b = (true) ? x : x;
}

typedef unsigned long size_t;

namespace std {
  enum class align_val_t : size_t {};
}

void* operator new(size_t, float);
void* operator new[](size_t, float);
void* operator new(size_t, std::align_val_t, float);
void* operator new[](size_t, std::align_val_t, float);
void operator delete(void*, float);
void operator delete[](void*, float);
void operator delete(void*, std::align_val_t, float);
void operator delete[](void*, std::align_val_t, float);

struct SizedDealloc {
  char a[32];
  void* operator new(size_t);
  void* operator new[](size_t);
  void operator delete(void*, size_t);
  void operator delete[](void*, size_t);
};

struct alignas(128) Overaligned {
  char a[256];
};

struct DefaultCtorWithDefaultParam {
  DefaultCtorWithDefaultParam(double d = 1.0);
};

void OperatorNew() {
  new int;  // No constructor
  new(1.0f) int;  // Placement new, no constructor
  new int();  // Zero-init
  new String();  // Constructor
  new(1.0f) String("hello");  // Placement new, constructor with args
  new Overaligned;  // Aligned new
  new(1.0f) Overaligned();  // Placement aligned new with zero-init
}

void OperatorNewArray(int n) {
  new int[10];  // Constant size
  new int[n];  // No constructor
  new(1.0f) int[n];  // Placement new, no constructor
  new String[n];  // Constructor
  new Overaligned[n];  // Aligned new
  new(1.0f) Overaligned[10];  // Aligned placement new
  new DefaultCtorWithDefaultParam[n];
  new int[n] { 0, 1, 2 };
}

int designatedInit() {
  int a1[1000] = { [2] = 10002, [900] = 10900 };
  return a1[900];
}

void IfStmtWithDeclaration(int x, int y) {
  if (bool b = x < y) {
    x = 5;
  }
  else if (int z = x + y) {
    y = 7;
  }
  else if (int* p = &x) {
    *p = 2;
  }
}

void WhileStmtWithDeclaration(int x, int y) {
  while (bool b = x < y) {
  }
  while (int z = x + y) {
  }
  while (int* p = &x) {
  }
}

int PointerDecay(int a[], int fn(float)) {
  return a[0] + fn(1.0);
}

int StmtExpr(int b, int y, int z) {
  int x = ({
    int w;
    if (b) {
      w = y;
    } else {
      w = z;
    }
    w;
  });

  return ({x;});
}

// TODO: `delete` gets translated to NoOp
void OperatorDelete() {
  delete static_cast<int*>(nullptr);  // No destructor
  delete static_cast<String*>(nullptr);  // Non-virtual destructor, with size.
  delete static_cast<SizedDealloc*>(nullptr);  // No destructor, with size.
  delete static_cast<Overaligned*>(nullptr);  // No destructor, with size and alignment.
  delete static_cast<PolymorphicBase*>(nullptr);  // Virtual destructor
}

// TODO: `delete[]` gets translated to NoOp
void OperatorDeleteArray() {
  delete[] static_cast<int*>(nullptr);  // No destructor
  delete[] static_cast<String*>(nullptr);  // Non-virtual destructor, with size.
  delete[] static_cast<SizedDealloc*>(nullptr);  // No destructor, with size.
  delete[] static_cast<Overaligned*>(nullptr);  // No destructor, with size and alignment.
  delete[] static_cast<PolymorphicBase*>(nullptr);  // Virtual destructor
}

struct EmptyStruct {};

void EmptyStructInit() {
  EmptyStruct s = {};
}

auto lam = []() {};

void Lambda(int x, const String& s) {
  auto lambda_empty = [](float f) { return 'A'; };
  lambda_empty(0);
  auto lambda_ref = [&](float f) { return s.c_str()[x]; };
  lambda_ref(1);
  auto lambda_val = [=](float f) { return s.c_str()[x]; };
  lambda_val(2);
  auto lambda_ref_explicit = [&s](float f) { return s.c_str()[0]; };
  lambda_ref_explicit(3);
  auto lambda_val_explicit = [s](float f) { return s.c_str()[0]; };
  lambda_val_explicit(4);
  auto lambda_mixed_explicit = [&s, x](float f) { return s.c_str()[x]; };
  lambda_mixed_explicit(5);
  int r = x - 1;
  auto lambda_inits = [&s, x, i = x + 1, &j = r](float f) { return s.c_str()[x + i - j]; };
  lambda_inits(6);
}

template<typename T>
struct vector {
    struct iterator {
        T* p;
        iterator& operator++();
        T& operator*() const;

        bool operator!=(iterator right) const;
    };

    iterator begin() const;
    iterator end() const;
};

template<typename T>
bool operator==(typename vector<T>::iterator left, typename vector<T>::iterator right);
template<typename T>
bool operator!=(typename vector<T>::iterator left, typename vector<T>::iterator right);

void RangeBasedFor(const vector<int>& v) {
    for (int e : v) {
        if (e > 0) {
            continue;
        }
    }

    for (const int& e : v) {
        if (e < 5) {
            break;
        }
    }
}

#if 0  // Explicit capture of `this` requires possible extractor fixes.

struct LambdaContainer {
  int x;

  void LambdaMember(const String& s) {
    auto lambda_implicit_this = [=](float f) { return s.c_str()[x]; };
    lambda_implicit_this(1);
    auto lambda_explicit_this_byref = [this, &s](float f) { return s.c_str()[x]; };
    lambda_explicit_this_byref(2);
    auto lambda_explicit_this_bycopy = [*this, &s](float f) { return s.c_str()[x]; };
    lambda_explicit_this_bycopy(3);
  }
};

#endif

int AsmStmt(int x) {
  __asm__("");
  return x;
}

static void AsmStmtWithOutputs(unsigned int& a, unsigned int b, unsigned int& c, unsigned int d)
{
  __asm__ __volatile__
    (
  "cpuid\n\t"
    : "+a" (a), "+b" (b) : "c" (c), "d" (d)
    );
}

void ExternDeclarations()
{
    extern int g;
    int x;
    int y, f(float);
    int z(float), w(float), h;
    typedef double d;
}

#define EXTERNS_IN_MACRO \
    extern int g; \
    for (int i = 0; i < 10; ++i) { \
        extern int g; \
    }

void ExternDeclarationsInMacro()
{
    EXTERNS_IN_MACRO;
}

void TryCatchNoCatchAny(bool b) {
  try {
    int x = 5;
    if (b) {
      throw "string literal";
    }
    else if (x < 2) {
      x = b ? 7 : throw String("String object");
    }
    x = 7;
  }
  catch (const char* s) {
    throw String(s);
  }
  catch (const String& e) {
  }
}

#define vector(elcount, type)  __attribute__((vector_size((elcount)*sizeof(type)))) type

void VectorTypes(int i) {
  vector(4, int) vi4 = { 0, 1, 2, 3 };
  int x = vi4[i];
  vi4[i] = x;
  vector(4, int) vi4_shuffle = __builtin_shufflevector(vi4, vi4, 3+0, 2, 1, 0);
  vi4 = vi4 + vi4_shuffle;
}

void *memcpy(void *dst, void *src, int size);

int ModeledCallTarget(int x) {
  int y;
  memcpy(&y, &x, sizeof(int));
  return y;
}

String ReturnObjectImpl() {
  return String("foo");
}

void switch1Case(int x) {
    int y = 0;
    switch(x) {
        case 1:
        y = 2;
    }
    int z = y;
}

void switch2Case_fallthrough(int x) {
    int y = 0;
    switch(x) {
        case 1:
        y = 2;
        case 2:
        y = 3;
    }
    int z = y;
}

void switch2Case(int x) {
    int y = 0;
    switch(x) {
        case 1:
        y = 2;
        break;
        case 2:
        y = 3;
    }
    int z = y;
}

void switch2Case_default(int x) {
    int y = 0;
    switch(x) {
        case 1:
            y = 2;
            break;

        case 2:
            y = 3;
            break;

        default:
            y = 4;
    }
    int z = y;
}

int staticLocalInit(int x) {
    static int a = 0;  // Constant initialization
    static int b = sizeof(x);  // Constant initialization
    static int c = x;  // Dynamic initialization
    static int d;  // Zero initialization

    return a + b + c + d;
}

void staticLocalWithConstructor(const char* dynamic) {
    static String a;
    static String b("static");
    static String c(dynamic);
}

// --- strings ---

char *strcpy(char *destination, const char *source);
char *strcat(char *destination, const char *source);

void test_strings(char *s1, char *s2) {
    char buffer[1024] = {0};

    strcpy(buffer, s1);
    strcat(buffer, s2);
}

struct A {
    int member;

    static void static_member(A* a, int x) {
        a->member = x;
    }

    static void static_member_without_def();
};

A* getAnInstanceOfA();

void test_static_member_functions(int int_arg, A* a_arg) {
    C c;
    c.StaticMemberFunction(10);
    C::StaticMemberFunction(10);

    A a;
    a.static_member(&a, int_arg);
    A::static_member(&a, int_arg);

    (&a)->static_member(a_arg, int_arg + 2);
    (*a_arg).static_member(&a, 99);
    a_arg->static_member(a_arg, -1);

    a.static_member_without_def();
    A::static_member_without_def();

    getAnInstanceOfA()->static_member_without_def();
}

int missingReturnValue(bool b, int x) {
    if (b) {
        return x;
    }
}

void returnVoid(int x, int y) {
    return IntegerOps(x, y);
}

void gccBinaryConditional(bool b, int x, long y) {
    int z = x;
    z = b ?: x;
    z = b ?: y;
    z = x ?: x;
    z = x ?: y;
    z = y ?: x;
    z = y ?: y;

    z = (x && b || y) ?: x;
}

bool predicateA();
bool predicateB();

int shortCircuitConditional(int x, int y) {
    return predicateA() && predicateB() ? x : y;
}

void *operator new(size_t, void *) noexcept;

void f(int* p)
{
  new (p) int;
}

template<typename T>
T defaultConstruct() {
    return T();
}

class constructor_only {
public:
    int x;

public:
    constructor_only(int x);
};

class copy_constructor {
public:
    int y;

public:
    copy_constructor();
    copy_constructor(const copy_constructor&);

    void method();
};

class destructor_only {
public:
    ~destructor_only();

    void method();
};

template<typename T>
void acceptRef(const T& v);

template<typename T>
void acceptValue(T v);

template<typename T>
T returnValue();

void temporary_string() {
    String s = returnValue<String>();  // No temporary
    const String& rs = returnValue<String>();  // Binding a reference variable to a temporary

    acceptRef(s);  // No temporary
    acceptRef<String>("foo");  // Binding a const reference to a temporary
    acceptValue(s);
    acceptValue<String>("foo");
    String().c_str();
    returnValue<String>().c_str();  // Member access on a temporary

    defaultConstruct<String>();
}

void temporary_destructor_only() {
    destructor_only d = returnValue<destructor_only>();
    const destructor_only& rd = returnValue<destructor_only>();
    destructor_only d2;
    acceptRef(d);
    acceptValue(d);
    destructor_only().method();
    returnValue<destructor_only>().method();

    defaultConstruct<destructor_only>();
}

void temporary_copy_constructor() {
    copy_constructor d = returnValue<copy_constructor>();
    const copy_constructor& rd = returnValue<copy_constructor>();
    copy_constructor d2;
    acceptRef(d);
    acceptValue(d);
    copy_constructor().method();
    returnValue<copy_constructor>().method();
    defaultConstruct<copy_constructor>();

    int y = returnValue<copy_constructor>().y;
}

void temporary_point() {
    Point p = returnValue<Point>();  // No temporary
    const Point& rp = returnValue<Point>();  // Binding a reference variable to a temporary

    acceptRef(p);  // No temporary
    acceptValue(p);
    Point().x;
    int y = returnValue<Point>().y;

    defaultConstruct<Point>();
}

struct UnusualFields {
    int& r;
    float a[10];
};

void temporary_unusual_fields() {
    const int& rx = returnValue<UnusualFields>().r;
    int x = returnValue<UnusualFields>().r;

    const float& rf = returnValue<UnusualFields>().a[3];
    float f = returnValue<UnusualFields>().a[5];
}

struct POD_Base {
    int x;

    float f() const;
};

struct POD_Middle : POD_Base {
    int y;
};

struct POD_Derived : POD_Middle {
    int z;
};

void temporary_hierarchy() {
    POD_Base b = returnValue<POD_Middle>();
    b = (returnValue<POD_Derived>());  // Multiple conversions plus parens
    int x = returnValue<POD_Derived>().x;
    float f = (returnValue<POD_Derived>()).f();
}

struct Inheritance_Test_B {
  ~Inheritance_Test_B() {}
};

struct Inheritance_Test_A : public Inheritance_Test_B {
  int x;
  int y;
  Inheritance_Test_A() : x(42) {
    y = 3;
  }
};

void array_structured_binding() {
    int xs[2] = {1, 2};
    // structured binding use
    {
        auto& [x0, x1] = xs;
        x1 = 3;
        int &rx1 = x1;
        int x = x1;
    }
    // explicit reference version
    {
        auto& unnamed_local_variable = xs;
        auto& x0 = unnamed_local_variable[0];
        auto& x1 = unnamed_local_variable[1];
        x1 = 3;
        int &rx1 = x1;
        int x = x1;
    }
}

struct StructuredBindingDataMemberMemberStruct {
    int x = 5;
};

struct StructuredBindingDataMemberStruct {
    typedef int ArrayType[2];
    typedef int &RefType;
    int i = 1;
    double d = 2.0;
    unsigned int b : 3;
    int& r = i;
    int* p = &i;
    ArrayType xs = {1, 2};
    RefType r_alt = i;
    StructuredBindingDataMemberMemberStruct m;
};

void data_member_structured_binding() {
    StructuredBindingDataMemberStruct s;
    // structured binding use
    {
        auto [i, d, b, r, p, xs, r_alt, m] = s;
        d = 4.0;
        double& rd = d;
        int v = i;
        r = 5;
        *p = 6;
        int& rr = r;
        int* pr = &r;
        int w = r;
    }
    // explicit reference version
    {
        auto unnamed_local_variable = s;
        auto& i = unnamed_local_variable.i;
        auto& d = unnamed_local_variable.d;
        // no equivalent for b
        auto& r = unnamed_local_variable.r;
        auto& p = unnamed_local_variable.p;
        d = 4.0;
        double& rd = d;
        int v = i;
        r = 5;
        *p = 6;
        int& rr = r;
        int* pr = &r;
        int w = r;
    }
}

namespace std {
    template<typename T>
    struct tuple_size;
    template<int, typename T>
    struct tuple_element;
}

struct StructuredBindingTupleRefGet {
    int i = 1;
    double d = 2.2;
    int& r = i;

    template<int i>
    typename std::tuple_element<i, StructuredBindingTupleRefGet>::type& get();
};

template<>
struct std::tuple_size<StructuredBindingTupleRefGet> {
    static const unsigned int value = 3;
};

template<>
struct std::tuple_element<0, StructuredBindingTupleRefGet> {
    using type = int;
};
template<>
struct std::tuple_element<1, StructuredBindingTupleRefGet> {
    using type = double;
};
template<>
struct std::tuple_element<2, StructuredBindingTupleRefGet> {
    using type = int&;
};

template<>
std::tuple_element<0, StructuredBindingTupleRefGet>::type& StructuredBindingTupleRefGet::get<0>() {
    return i;
}
template<>
std::tuple_element<1, StructuredBindingTupleRefGet>::type& StructuredBindingTupleRefGet::get<1>() {
    return d;
}
template<>
std::tuple_element<2, StructuredBindingTupleRefGet>::type& StructuredBindingTupleRefGet::get<2>() {
    return r;
}

void tuple_structured_binding_ref_get() {
    StructuredBindingTupleRefGet t;
    // structured binding use
    {
        auto [i, d, r] = t;
        d = 4.0;
        double& rd = d;
        int v = i;
        r = 5;
        int& rr = r;
        int w = r;
    }
    // explicit reference version
    {
        auto unnamed_local_variable = t;
        auto& i = unnamed_local_variable.get<0>();
        auto& d = unnamed_local_variable.get<1>();
        auto& r = unnamed_local_variable.get<2>();
        d = 4.0;
        double& rd = d;
        int v = i;
        r = 5;
        int& rr = r;
        int w = r;
    }
}

struct StructuredBindingTupleNoRefGet {
    int i = 1;
    int& r = i;

    template<int i>
    typename std::tuple_element<i, StructuredBindingTupleNoRefGet>::type get();
};

template<>
struct std::tuple_size<StructuredBindingTupleNoRefGet> {
    static const unsigned int value = 3;
};

template<>
struct std::tuple_element<0, StructuredBindingTupleNoRefGet> {
    using type = int;
};
template<>
struct std::tuple_element<1, StructuredBindingTupleNoRefGet> {
    using type = int&;
};
template<>
struct std::tuple_element<2, StructuredBindingTupleNoRefGet> {
    using type = int&&;
};

template<>
std::tuple_element<0, StructuredBindingTupleNoRefGet>::type StructuredBindingTupleNoRefGet::get<0>() {
    return i;
}
template<>
std::tuple_element<1, StructuredBindingTupleNoRefGet>::type StructuredBindingTupleNoRefGet::get<1>() {
    return r;
}
template<>
std::tuple_element<2, StructuredBindingTupleNoRefGet>::type StructuredBindingTupleNoRefGet::get<2>() {
    return 5;
}

void tuple_structured_binding_no_ref_get() {
    StructuredBindingTupleNoRefGet t;
    //structured binding use
    {
        auto&& [i, r, rv] = t;
        i = 4;
        int& ri = i;
        int v = i;
        r = 5;
        int& rr = r;
        int w = r;
    }
    // explicit reference version
    {
        auto&& unnamed_local_variable = t;
        auto&& i = unnamed_local_variable.get<0>();
        auto& r = unnamed_local_variable.get<1>();
        auto&& rv = unnamed_local_variable.get<2>();
        i = 4;
        int& ri = i;
        int v = i;
        r = 5;
        int& rr = r;
        int w = r;
    }
}

void array_structured_binding_non_ref_init() {
    int xs[2] = {1, 2};
    auto [x0, x1] = xs;
}

class CapturedLambdaMyObj
{
public:
    CapturedLambdaMyObj() {}
};

void captured_lambda(int x, int &y, int &&z)
{
    const auto &obj1 = CapturedLambdaMyObj();
    auto obj2 = CapturedLambdaMyObj();

    auto lambda_outer = [obj1, obj2, x, y, z](){
        auto lambda_inner = [obj1, obj2, x, y, z](){;};
    };
}

// semmle-extractor-options: -std=c++17 --clang