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112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
// semmle-extractor-options: -std=c++17
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typedef unsigned long size_t;
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namespace std {
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enum class align_val_t : size_t {};
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}
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void* operator new(size_t, float);
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void* operator new[](size_t, float);
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void* operator new(size_t, std::align_val_t, float);
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void* operator new[](size_t, std::align_val_t, float);
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void operator delete(void*, float);
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void operator delete[](void*, float);
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void operator delete(void*, std::align_val_t, float);
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void operator delete[](void*, std::align_val_t, float);
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struct String {
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String();
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String(const String&);
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String(String&&);
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String(const char*);
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~String();
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String& operator=(const String&);
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String& operator=(String&&);
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const char* c_str() const;
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private:
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const char* p;
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};
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struct SizedDealloc {
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char a[32];
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void* operator new(size_t);
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void* operator new[](size_t);
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void operator delete(void*, size_t);
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void operator delete[](void*, size_t);
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};
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struct alignas(128) Overaligned {
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char a[256];
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};
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struct PolymorphicBase {
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virtual ~PolymorphicBase();
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};
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void OperatorNew() {
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new int; // No constructor
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new(1.0f) int; // Placement new, no constructor
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new int(); // Zero-init
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new String(); // Constructor
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new(1.0f) String("hello"); // Placement new, constructor with args
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new Overaligned; // Aligned new
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new(1.0f) Overaligned(); // Placement aligned new
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}
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void OperatorDelete() {
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delete static_cast<int*>(nullptr); // No destructor
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delete static_cast<String*>(nullptr); // Non-virtual destructor, with size.
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delete static_cast<SizedDealloc*>(nullptr); // No destructor, with size.
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delete static_cast<Overaligned*>(nullptr); // No destructor, with size and alignment.
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delete static_cast<PolymorphicBase*>(nullptr); // Virtual destructor
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delete static_cast<const String*>(nullptr); // Pointer to const
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}
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void OperatorNewArray(int n) {
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new int[n]; // No constructor
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new(1.0f) int[n]; // Placement new, no constructor
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new String[n]; // Constructor
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new Overaligned[n]; // Aligned new
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new String[10]; // Constant size
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}
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int* const GetPointer();
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void OperatorDeleteArray() {
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delete[] static_cast<int*>(nullptr); // No destructor
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delete[] static_cast<String*>(nullptr); // Non-virtual destructor, with size.
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delete[] static_cast<SizedDealloc*>(nullptr); // No destructor, with size.
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delete[] static_cast<Overaligned*>(nullptr); // No destructor, with size and alignment.
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delete[] static_cast<PolymorphicBase*>(nullptr); // Virtual destructor
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delete[] GetPointer();
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}
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struct FailedInit {
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FailedInit();
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~FailedInit();
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void* operator new(size_t); // Non-placement
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void* operator new[](size_t); // Non-placement
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void operator delete(void*, size_t); // Sized deallocation
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void operator delete[](void*, size_t); // Sized deallocation
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};
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struct alignas(128) FailedInitOveraligned {
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FailedInitOveraligned();
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~FailedInitOveraligned();
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void* operator new(size_t, std::align_val_t, float); // Aligned placement
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void* operator new[](size_t, std::align_val_t, float); // Aligned placement
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void operator delete(void*, std::align_val_t, float); // Aligned placement
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void operator delete[](void*, std::align_val_t, float); // Aligned placement
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};
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void TestFailedInit(int n) {
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new FailedInit();
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new FailedInit[n];
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new(1.0f) FailedInitOveraligned();
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new(1.0f) FailedInitOveraligned[10];
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}
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