| //===-- msan_new_delete.cc ------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of MemorySanitizer. |
| // |
| // Interceptors for operators new and delete. |
| //===----------------------------------------------------------------------===// |
| |
| #include "msan.h" |
| #include "interception/interception.h" |
| #include "sanitizer_common/sanitizer_allocator.h" |
| #include "sanitizer_common/sanitizer_allocator_report.h" |
| |
| #if MSAN_REPLACE_OPERATORS_NEW_AND_DELETE |
| |
| #include <stddef.h> |
| |
| using namespace __msan; // NOLINT |
| |
| // Fake std::nothrow_t and std::align_val_t to avoid including <new>. |
| namespace std { |
| struct nothrow_t {}; |
| enum class align_val_t: size_t {}; |
| } // namespace std |
| |
| |
| // TODO(alekseys): throw std::bad_alloc instead of dying on OOM. |
| #define OPERATOR_NEW_BODY(nothrow) \ |
| GET_MALLOC_STACK_TRACE; \ |
| void *res = msan_malloc(size, &stack);\ |
| if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\ |
| return res |
| #define OPERATOR_NEW_BODY_ALIGN(nothrow) \ |
| GET_MALLOC_STACK_TRACE;\ |
| void *res = msan_memalign((uptr)align, size, &stack);\ |
| if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\ |
| return res; |
| |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new(size_t size, std::nothrow_t const&) { |
| OPERATOR_NEW_BODY(true /*nothrow*/); |
| } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new[](size_t size, std::nothrow_t const&) { |
| OPERATOR_NEW_BODY(true /*nothrow*/); |
| } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new(size_t size, std::align_val_t align) |
| { OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new[](size_t size, std::align_val_t align) |
| { OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&) |
| { OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); } |
| INTERCEPTOR_ATTRIBUTE |
| void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&) |
| { OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); } |
| |
| #define OPERATOR_DELETE_BODY \ |
| GET_MALLOC_STACK_TRACE; \ |
| if (ptr) MsanDeallocate(&stack, ptr) |
| |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr, std::nothrow_t const&) { |
| OPERATOR_DELETE_BODY; |
| } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr, size_t size) NOEXCEPT { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr, size_t size) NOEXCEPT |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr, std::align_val_t align) NOEXCEPT |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr, std::align_val_t align, std::nothrow_t const&) |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr, std::align_val_t align, std::nothrow_t const&) |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete(void *ptr, size_t size, std::align_val_t align) NOEXCEPT |
| { OPERATOR_DELETE_BODY; } |
| INTERCEPTOR_ATTRIBUTE |
| void operator delete[](void *ptr, size_t size, std::align_val_t align) NOEXCEPT |
| { OPERATOR_DELETE_BODY; } |
| |
| |
| #endif // MSAN_REPLACE_OPERATORS_NEW_AND_DELETE |