Attachment 618142 Details for Bug 850911 – new39a.C

new39a.C

new39a.C (text/plain), 1.09 KB, created by Jakub Jelinek on 2012-09-27 15:14:34 UTC

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Creator: Jakub Jelinek

Created: 2012-09-27 15:14:34 UTC

Size: 1.09 KB

patch

obsolete

>// Testcase for overflow handling in operator new[].
>// { dg-do run }
>
>#include <stdlib.h>
>#include <stdexcept>
>
>int two = 2;
>
>struct without_new {
>  char bar[256];
>};
>
>struct with_new {
>  char bar[256];
>  void *operator new[] (size_t sz)
>  {
>    if (sz != -1)
>      abort ();
>    throw std::bad_alloc();
>  }
>};
>
>template <typename T>
>inline void
>test (size_t s)
>{
>  typedef T T1[two][2][two];
>  try {
>    new T1[s];
>    abort ();
>  } catch (std::bad_alloc &) {
>  }
>}
>
>template <typename T>
>void
>test_noopt (size_t s) __attribute__((noinline));
>
>template <typename T>
>void
>test_noopt (size_t s)
>{
>  __asm__ ("");
>  test<T> (s);
>}
>
>template <typename T>
>void
>all_tests ()
>{
>  test<T>(-1);
>  test<T>(size_t(-1) / sizeof (T) / 8 + 1);
>  test<T>(size_t(-1) / sizeof (T) / 8 + 2);
>  test_noopt<T>(-1);
>  test_noopt<T>(size_t(-1) / sizeof (T) / 8 + 1);
>  test_noopt<T>(size_t(-1) / sizeof (T) / 8 + 2);
>}
>
>int
>main ()
>{
>  __asm__ volatile ("" : : : "memory");
>  try {
>    ::operator new(size_t(-1));
>    abort ();
>  } catch (std::bad_alloc &) {
>  }
>  all_tests<without_new> ();
>  all_tests<with_new> ();
>  return 0;
>}

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