libasan/asan_new_delete.cc

   1 //===-- asan_interceptors.cc ----------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of AddressSanitizer, an address sanity checker.
   9 //
  10 // Interceptors for operators new and delete.
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "asan_allocator.h"
  14 #include "asan_internal.h"
  15 #include "asan_stack.h"
  16
  17 #include <stddef.h>
  18 #include <new>
  19
  20 namespace __asan {
  21 // This function is a no-op. We need it to make sure that object file
  22 // with our replacements will actually be loaded from static ASan
  23 // run-time library at link-time.
  24 void ReplaceOperatorsNewAndDelete() { }
  25 }
  26
  27 using namespace __asan;  // NOLINT
  28
  29 #define OPERATOR_NEW_BODY \
  30   GET_STACK_TRACE_HERE_FOR_MALLOC;\
  31   return asan_memalign(0, size, &stack);
  32
  33 #if ASAN_ANDROID
  34 void *operator new(size_t size) { OPERATOR_NEW_BODY; }
  35 void *operator new[](size_t size) { OPERATOR_NEW_BODY; }
  36 #else
  37 void *operator new(size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
  38 void *operator new[](size_t size) throw(std::bad_alloc) { OPERATOR_NEW_BODY; }
  39 void *operator new(size_t size, std::nothrow_t const&) throw()
  40 { OPERATOR_NEW_BODY; }
  41 void *operator new[](size_t size, std::nothrow_t const&) throw()
  42 { OPERATOR_NEW_BODY; }
  43 #endif
  44
  45 #define OPERATOR_DELETE_BODY \
  46   GET_STACK_TRACE_HERE_FOR_FREE(ptr);\
  47   asan_free(ptr, &stack);
  48
  49 void operator delete(void *ptr) throw() { OPERATOR_DELETE_BODY; }
  50 void operator delete[](void *ptr) throw() { OPERATOR_DELETE_BODY; }
  51 void operator delete(void *ptr, std::nothrow_t const&) throw()
  52 { OPERATOR_DELETE_BODY; }
  53 void operator delete[](void *ptr, std::nothrow_t const&) throw()
  54 { OPERATOR_DELETE_BODY; }