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ef3060ef96
Summary: The `max_size()` method of containers should respect both the allocator's reported `max_size` and the range of the `difference_type`. This patch makes all containers choose the smallest of those two values. Reviewers: mclow.lists, EricWF Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D26885 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@287729 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <map>
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// class multimap
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// size_type max_size() const;
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#include <cassert>
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#include <limits>
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#include <map>
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#include <type_traits>
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#include "test_allocator.h"
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#include "test_macros.h"
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int main()
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{
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typedef std::pair<const int, int> KV;
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{
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typedef limited_allocator<KV, 10> A;
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typedef std::multimap<int, int, std::less<int>, A> C;
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C c;
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assert(c.max_size() <= 10);
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LIBCPP_ASSERT(c.max_size() == 10);
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}
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{
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typedef limited_allocator<KV, (size_t)-1> A;
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typedef std::multimap<int, int, std::less<int>, A> C;
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const C::difference_type max_dist =
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std::numeric_limits<C::difference_type>::max();
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C c;
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assert(c.max_size() <= max_dist);
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LIBCPP_ASSERT(c.max_size() == max_dist);
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}
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{
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typedef std::multimap<char, int> C;
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const C::difference_type max_dist =
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std::numeric_limits<C::difference_type>::max();
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C c;
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assert(c.max_size() <= max_dist);
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assert(c.max_size() <= alloc_max_size(c.get_allocator()));
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}
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}
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