1 //===-- msan_new_delete.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 MemorySanitizer. 11 // 12 // Interceptors for operators new and delete. 13 //===----------------------------------------------------------------------===// 14 15 #include "msan.h" 16 #include "interception/interception.h" 17 18 #if MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 19 20 #include <stddef.h> 21 22 using namespace __msan; // NOLINT 23 24 // Fake std::nothrow_t to avoid including <new>. 25 namespace std { 26 struct nothrow_t {}; 27 } // namespace std 28 29 30 #define OPERATOR_NEW_BODY \ 31 GET_MALLOC_STACK_TRACE; \ 32 return MsanReallocate(&stack, 0, size, sizeof(u64), false) 33 34 INTERCEPTOR_ATTRIBUTE 35 void *operator new(size_t size) { OPERATOR_NEW_BODY; } 36 INTERCEPTOR_ATTRIBUTE 37 void *operator new[](size_t size) { OPERATOR_NEW_BODY; } 38 INTERCEPTOR_ATTRIBUTE 39 void *operator new(size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } 40 INTERCEPTOR_ATTRIBUTE 41 void *operator new[](size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY; } 42 43 #define OPERATOR_DELETE_BODY \ 44 GET_MALLOC_STACK_TRACE; \ 45 if (ptr) MsanDeallocate(&stack, ptr) 46 47 INTERCEPTOR_ATTRIBUTE 48 void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } 49 INTERCEPTOR_ATTRIBUTE 50 void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } 51 INTERCEPTOR_ATTRIBUTE 52 void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; } 53 INTERCEPTOR_ATTRIBUTE 54 void operator delete[](void *ptr, std::nothrow_t const&) { 55 OPERATOR_DELETE_BODY; 56 } 57 58 #endif // MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 59
