massif/tests/overloaded-new.cpp

   1 // operator new(unsigned)
   2 // operator new[](unsigned)
   3 // operator new(unsigned, std::nothrow_t const&)
   4 // operator new[](unsigned, std::nothrow_t const&)
   5
   6 #include <stdlib.h>
   7
   8 #include <new>
   9
  10 using std::nothrow_t;
  11
  12 // A big structure.  Its details don't matter.
  13 typedef struct {
  14            int array[1000];
  15         } s;
  16
  17 __attribute__((noinline)) void* operator new (std::size_t n)
  18 {
  19     return (void*)12345;
  20 }
  21
  22 __attribute__((noinline)) void* operator new (std::size_t n, std::nothrow_t const &)
  23 {
  24     return (void*)23456;
  25 }
  26
  27 __attribute__((noinline)) void* operator new[] (std::size_t n)
  28 {
  29     return (void*)34567;
  30 }
  31
  32 __attribute__((noinline)) void* operator new[] (std::size_t n, std::nothrow_t const &)
  33 {
  34     return (void*)45678;
  35 }
  36
  37 __attribute__((noinline)) void* operator new (std::size_t size, std::align_val_t al)
  38 {
  39     return (void*)56789;
  40 }
  41
  42 __attribute__((noinline)) void* operator new[] (std::size_t size, std::align_val_t al)
  43 {
  44     return (void*)67890;
  45 }
  46
  47 __attribute__((noinline)) void* operator new(std::size_t size, std::align_val_t al, const std::nothrow_t&) noexcept
  48 {
  49     return (void*)78901;
  50 }
  51
  52 __attribute__((noinline)) void* operator new[](std::size_t size, std::align_val_t al, const std::nothrow_t&) noexcept
  53 {
  54     return (void*)89012;
  55 }
  56
  57 __attribute__((noinline)) void operator delete (void* p)
  58 {
  59
  60 }
  61
  62 __attribute__((noinline)) void operator delete[] (void* p)
  63 {
  64
  65 }
  66
  67 __attribute__((noinline))  void operator delete (void* ptr, std::align_val_t al ) noexcept
  68 {
  69
  70 }
  71
  72 __attribute__((noinline))  void operator delete[] (void* ptr, std::align_val_t al ) noexcept
  73 {
  74
  75 }
  76
  77 int main(void)
  78 {
  79     s*        p1 = new                s;
  80     s*        p2 = new (std::nothrow) s;
  81     char*     c1 = new                char[2000];
  82     char*     c2 = new (std::nothrow) char[2000];
  83     s*        pa1 = static_cast<s*>(operator new(sizeof(*pa1), static_cast<std::align_val_t>(256U)));
  84     s*        pa2 = static_cast<s*>(operator new[](sizeof(*pa2)*10U, static_cast<std::align_val_t>(256U)));
  85     std::nothrow_t tag;
  86     s*        pa3 = static_cast<s*>(operator new(sizeof(*pa3), static_cast<std::align_val_t>(256U), tag));
  87     s*        pa4 = static_cast<s*>(operator new[](sizeof(*pa4)*10U, static_cast<std::align_val_t>(256U), tag));
  88     delete p1;
  89     delete p2;
  90     delete [] c1;
  91     delete [] c2;
  92     operator delete(pa1, static_cast<std::align_val_t>(256U));
  93     operator delete[](pa2, static_cast<std::align_val_t>(256U));
  94     operator delete(pa3, static_cast<std::align_val_t>(256U));
  95     operator delete[](pa4, static_cast<std::align_val_t>(256U));
  96     return 0;
  97 }
  98
  99