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 #include <new> 21 22 namespace __asan { 23 // This function is a no-op. We need it to make sure that object file 24 // with our replacements will actually be loaded from static ASan 25 // run-time library at link-time. 26 void ReplaceOperatorsNewAndDelete() { } 27 } 28 29 using namespace __asan; // NOLINT 30 31 #define OPERATOR_NEW_BODY \ 32 GET_STACK_TRACE_HERE_FOR_MALLOC;\ 33 return asan_memalign(0, size, &stack); 34 35 #if ASAN_ANDROID 36 void *operator new(size_t size) { OPERATOR_NEW_BODY; } 37 void *operator new[](size_t size) { OPERATOR_NEW_BODY; } 38 #else 39 void *operator new(size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; } 40 void *operator new[](size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; } 41 void *operator new(size_t size, std::nothrow_t const&) throw() 42 { OPERATOR_NEW_BODY; } 43 void *operator new[](size_t size, std::nothrow_t const&) throw() 44 { OPERATOR_NEW_BODY; } 45 #endif 46 47 #define OPERATOR_DELETE_BODY \ 48 GET_STACK_TRACE_HERE_FOR_FREE(ptr);\ 49 asan_free(ptr, &stack); 50 51 void operator delete(void *ptr) throw() { OPERATOR_DELETE_BODY; } 52 void operator delete[](void *ptr) throw() { OPERATOR_DELETE_BODY; } 53 void operator delete(void *ptr, std::nothrow_t const&) throw() 54 { OPERATOR_DELETE_BODY; } 55 void operator delete[](void *ptr, std::nothrow_t const&) throw() 56 { OPERATOR_DELETE_BODY; } 57
