94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
// Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with this library; see the file COPYING3. If not see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
// { dg-do run { target c++11 } }
|
|
|
|
// libstdc++/56166
|
|
|
|
#ifndef _GLIBCXX_USE_CXX11_ABI
|
|
# define _GLIBCXX_USE_CXX11_ABI 0
|
|
#endif
|
|
#include <string>
|
|
#include <new>
|
|
|
|
static int fail_after = -1;
|
|
|
|
template<typename T>
|
|
struct Allocator
|
|
{
|
|
using value_type = T;
|
|
|
|
// Need these typedefs because COW string doesn't use allocator_traits.
|
|
using pointer = T*;
|
|
using const_pointer = const T*;
|
|
using reference = T&;
|
|
using const_reference = const T&;
|
|
using difference_type = long;
|
|
using size_type = unsigned long;
|
|
template<typename U>
|
|
struct rebind {
|
|
using other = Allocator<U>;
|
|
};
|
|
|
|
Allocator() { }
|
|
|
|
template<typename U>
|
|
Allocator(const Allocator<U>&) { }
|
|
|
|
T* allocate(size_type n)
|
|
{
|
|
if (fail_after >= 0) {
|
|
if (fail_after-- == 0) {
|
|
throw std::bad_alloc();
|
|
}
|
|
}
|
|
return (T*)new char[n * sizeof(T)];
|
|
}
|
|
|
|
void deallocate(T* p, size_type)
|
|
{
|
|
delete[] (char*)p;
|
|
}
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
bool operator==(const Allocator<T>&, const Allocator<U>&) { return true; }
|
|
template<typename T, typename U>
|
|
bool operator!=(const Allocator<T>&, const Allocator<U>&) { return false; }
|
|
|
|
using string = std::basic_string<char, std::char_traits<char>, Allocator<char>>;
|
|
|
|
string f()
|
|
{
|
|
string s1("xxxxxx");
|
|
string s2 = s1;
|
|
s1.clear();
|
|
return s2;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
for (int i = 0; i < 10; i++) {
|
|
try {
|
|
fail_after = i;
|
|
f();
|
|
break;
|
|
} catch (std::bad_alloc) {
|
|
}
|
|
}
|
|
}
|