1*68d75effSDimitry Andric //===-- msan_new_delete.cpp -----------------------------------------------===// 2*68d75effSDimitry Andric // 3*68d75effSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*68d75effSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*68d75effSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*68d75effSDimitry Andric // 7*68d75effSDimitry Andric //===----------------------------------------------------------------------===// 8*68d75effSDimitry Andric // 9*68d75effSDimitry Andric // This file is a part of MemorySanitizer. 10*68d75effSDimitry Andric // 11*68d75effSDimitry Andric // Interceptors for operators new and delete. 12*68d75effSDimitry Andric //===----------------------------------------------------------------------===// 13*68d75effSDimitry Andric 14*68d75effSDimitry Andric #include "msan.h" 15*68d75effSDimitry Andric #include "interception/interception.h" 16*68d75effSDimitry Andric #include "sanitizer_common/sanitizer_allocator.h" 17*68d75effSDimitry Andric #include "sanitizer_common/sanitizer_allocator_report.h" 18*68d75effSDimitry Andric 19*68d75effSDimitry Andric #if MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 20*68d75effSDimitry Andric 21*68d75effSDimitry Andric #include <stddef.h> 22*68d75effSDimitry Andric 23*68d75effSDimitry Andric using namespace __msan; 24*68d75effSDimitry Andric 25*68d75effSDimitry Andric // Fake std::nothrow_t and std::align_val_t to avoid including <new>. 26*68d75effSDimitry Andric namespace std { 27*68d75effSDimitry Andric struct nothrow_t {}; 28*68d75effSDimitry Andric enum class align_val_t: size_t {}; 29*68d75effSDimitry Andric } // namespace std 30*68d75effSDimitry Andric 31*68d75effSDimitry Andric 32*68d75effSDimitry Andric // TODO(alekseys): throw std::bad_alloc instead of dying on OOM. 33*68d75effSDimitry Andric #define OPERATOR_NEW_BODY(nothrow) \ 34*68d75effSDimitry Andric GET_MALLOC_STACK_TRACE; \ 35*68d75effSDimitry Andric void *res = msan_malloc(size, &stack);\ 36*68d75effSDimitry Andric if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\ 37*68d75effSDimitry Andric return res 38*68d75effSDimitry Andric #define OPERATOR_NEW_BODY_ALIGN(nothrow) \ 39*68d75effSDimitry Andric GET_MALLOC_STACK_TRACE;\ 40*68d75effSDimitry Andric void *res = msan_memalign((uptr)align, size, &stack);\ 41*68d75effSDimitry Andric if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\ 42*68d75effSDimitry Andric return res; 43*68d75effSDimitry Andric 44*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 45*68d75effSDimitry Andric void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } 46*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 47*68d75effSDimitry Andric void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } 48*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 49*68d75effSDimitry Andric void *operator new(size_t size, std::nothrow_t const&) { 50*68d75effSDimitry Andric OPERATOR_NEW_BODY(true /*nothrow*/); 51*68d75effSDimitry Andric } 52*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 53*68d75effSDimitry Andric void *operator new[](size_t size, std::nothrow_t const&) { 54*68d75effSDimitry Andric OPERATOR_NEW_BODY(true /*nothrow*/); 55*68d75effSDimitry Andric } 56*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 57*68d75effSDimitry Andric void *operator new(size_t size, std::align_val_t align) 58*68d75effSDimitry Andric { OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); } 59*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 60*68d75effSDimitry Andric void *operator new[](size_t size, std::align_val_t align) 61*68d75effSDimitry Andric { OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); } 62*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 63*68d75effSDimitry Andric void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&) 64*68d75effSDimitry Andric { OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); } 65*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 66*68d75effSDimitry Andric void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&) 67*68d75effSDimitry Andric { OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); } 68*68d75effSDimitry Andric 69*68d75effSDimitry Andric #define OPERATOR_DELETE_BODY \ 70*68d75effSDimitry Andric GET_MALLOC_STACK_TRACE; \ 71*68d75effSDimitry Andric if (ptr) MsanDeallocate(&stack, ptr) 72*68d75effSDimitry Andric 73*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 74*68d75effSDimitry Andric void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } 75*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 76*68d75effSDimitry Andric void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } 77*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 78*68d75effSDimitry Andric void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; } 79*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 80*68d75effSDimitry Andric void operator delete[](void *ptr, std::nothrow_t const&) { 81*68d75effSDimitry Andric OPERATOR_DELETE_BODY; 82*68d75effSDimitry Andric } 83*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 84*68d75effSDimitry Andric void operator delete(void *ptr, size_t size) NOEXCEPT { OPERATOR_DELETE_BODY; } 85*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 86*68d75effSDimitry Andric void operator delete[](void *ptr, size_t size) NOEXCEPT 87*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 88*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 89*68d75effSDimitry Andric void operator delete(void *ptr, std::align_val_t align) NOEXCEPT 90*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 91*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 92*68d75effSDimitry Andric void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT 93*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 94*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 95*68d75effSDimitry Andric void operator delete(void *ptr, std::align_val_t align, std::nothrow_t const&) 96*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 97*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 98*68d75effSDimitry Andric void operator delete[](void *ptr, std::align_val_t align, std::nothrow_t const&) 99*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 100*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 101*68d75effSDimitry Andric void operator delete(void *ptr, size_t size, std::align_val_t align) NOEXCEPT 102*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 103*68d75effSDimitry Andric INTERCEPTOR_ATTRIBUTE 104*68d75effSDimitry Andric void operator delete[](void *ptr, size_t size, std::align_val_t align) NOEXCEPT 105*68d75effSDimitry Andric { OPERATOR_DELETE_BODY; } 106*68d75effSDimitry Andric 107*68d75effSDimitry Andric 108*68d75effSDimitry Andric #endif // MSAN_REPLACE_OPERATORS_NEW_AND_DELETE 109