asan_new_delete.cc revision 4d5f98df886051afeece1698d4bc8f154391c22d 
1//===-- asan_interceptors.cc ------------------------------------*- C++ -*-===//
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 <new>
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#define OPERATOR_NEW_BODY \
31  GET_STACK_TRACE_HERE_FOR_MALLOC;\
32  return asan_memalign(0, size, &stack);
33
34#ifdef ANDROID
35void *operator new(size_t size) { OPERATOR_NEW_BODY; }
36void *operator new[](size_t size) { OPERATOR_NEW_BODY; }
37#else
38void *operator new(size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
39void *operator new[](size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
40void *operator new(size_t size, std::nothrow_t const&) throw()
41{ OPERATOR_NEW_BODY; }
42void *operator new[](size_t size, std::nothrow_t const&) throw()
43{ OPERATOR_NEW_BODY; }
44#endif
45
46#define OPERATOR_DELETE_BODY \
47  GET_STACK_TRACE_HERE_FOR_FREE(ptr);\
48  asan_free(ptr, &stack);
49
50void operator delete(void *ptr) throw() { OPERATOR_DELETE_BODY; }
51void operator delete[](void *ptr) throw() { OPERATOR_DELETE_BODY; }
52void operator delete(void *ptr, std::nothrow_t const&) throw()
53{ OPERATOR_DELETE_BODY; }
54void operator delete[](void *ptr, std::nothrow_t const&) throw()
55{ OPERATOR_DELETE_BODY; }
56