asan_new_delete.cc revision 3aa15c1ad60ae6c63973a0982662f26449f661bc
1//===-- asan_interceptors.cc ----------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of AddressSanitizer, an address sanity checker. 11// 12// Interceptors for operators new and delete. 13//===----------------------------------------------------------------------===// 14 15#include "asan_allocator.h" 16#include "asan_internal.h" 17#include "asan_stack.h" 18 19#include <stddef.h> 20 21namespace __asan { 22// This function is a no-op. We need it to make sure that object file 23// with our replacements will actually be loaded from static ASan 24// run-time library at link-time. 25void ReplaceOperatorsNewAndDelete() { } 26} 27 28using namespace __asan; // NOLINT 29 30// On Android new() goes through malloc interceptors. 31#if !ASAN_ANDROID 32 33// Fake std::nothrow_t to avoid including <new>. 34namespace std { 35struct nothrow_t {}; 36} // namespace std 37 38#define OPERATOR_NEW_BODY \ 39 GET_STACK_TRACE_HERE_FOR_MALLOC;\ 40 return asan_memalign(0, size, &stack); 41 42INTERCEPTOR_ATTRIBUTE 43void *operator new(size_t size) { OPERATOR_NEW_BODY; } 44INTERCEPTOR_ATTRIBUTE 45void *operator new[](size_t size) { OPERATOR_NEW_BODY; } 46INTERCEPTOR_ATTRIBUTE 47void *operator new(size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } 48INTERCEPTOR_ATTRIBUTE 49void *operator new[](size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } 50 51#define OPERATOR_DELETE_BODY \ 52 GET_STACK_TRACE_HERE_FOR_FREE(ptr);\ 53 asan_free(ptr, &stack); 54 55INTERCEPTOR_ATTRIBUTE 56void operator delete(void *ptr) { OPERATOR_DELETE_BODY; } 57INTERCEPTOR_ATTRIBUTE 58void operator delete[](void *ptr) { OPERATOR_DELETE_BODY; } 59INTERCEPTOR_ATTRIBUTE 60void operator delete(void *ptr, std::nothrow_t const&) 61{ OPERATOR_DELETE_BODY; } 62INTERCEPTOR_ATTRIBUTE 63void operator delete[](void *ptr, std::nothrow_t const&) 64{ OPERATOR_DELETE_BODY; } 65 66#endif 67