libstdc++-v3/testsuite/18_support/cxa_vec.cc

   1 // { dg-do run }
   2 // Avoid use of non-overridable new/delete operators in shared
   3 // { dg-options "-static" { target *-*-mingw* } }
   4 // Test __cxa_vec routines
   5 // Copyright (C) 2000-2020 Free Software Foundation, Inc.
   6 // Contributed by Nathan Sidwell 7 Apr 2000 <nathan@nathan@codesourcery.com>
   7
   8 #include <cxxabi.h>
   9 #include <stdio.h>
  10 #include <new>
  11 #include <stdlib.h>
  12 #include <setjmp.h>
  13
  14 // Allocate enough padding to hold an array cookie.
  15 #ifdef __ARM_EABI__
  16 static const size_t padding = 8;
  17 #else
  18 static const size_t padding = (sizeof (std::size_t));
  19 #endif
  20
  21 // our pseudo ctors and dtors
  22 static abi::__cxa_cdtor_return_type ctor (void *x)
  23 {
  24   abort ();
  25 }
  26
  27 static abi::__cxa_cdtor_return_type dtor (void *x)
  28 {
  29   abort ();
  30 }
  31
  32 // allocate an array whose size causes an overflow during multiplication
  33 void test1 ()
  34 {
  35   static const std::size_t large_size =
  36     std::size_t(1) << (sizeof(std::size_t) * 8 - 2);
  37   try
  38     {
  39       abi::__cxa_vec_new (large_size, 8, 0, ctor, dtor);
  40       abort ();
  41     }
  42   catch (std::bad_alloc &)
  43     {
  44     }
  45 }
  46
  47 // allocate an array whose size causes an overflow during addition
  48 void test2 ()
  49 {
  50   try
  51     {
  52       abi::__cxa_vec_new (std::size_t(-1) / 4, 4, padding, ctor, dtor);
  53       abort ();
  54     }
  55   catch (std::bad_alloc &)
  56     {
  57     }
  58 }
  59
  60 int main ()
  61 {
  62   test1 ();
  63   test2 ();
  64 }