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937aecfb3d
These tests were unconditionally asserting that optional and unique_ptr declare throwing hashes, but MSVC++ implements conditional noexcept forwarding that of the underlying hash function. As a result we were failing these tests but there's nothing forbidding strengthening noexcept in that way. Changed the ASSERT_NOT_NOEXCEPT asserts to use types which themselves have non-noexcept hash functions. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300516 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
2.2 KiB
C++
81 lines
2.2 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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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// <optional>
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// template <class T> struct hash<optional<T>>;
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#include <optional>
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#include <string>
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#include <memory>
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#include <cassert>
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#include "poisoned_hash_helper.hpp"
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struct A {};
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struct B {};
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namespace std {
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template <>
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struct hash<B> {
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size_t operator()(B const&) TEST_NOEXCEPT_FALSE { return 0; }
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};
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}
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int main()
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{
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using std::optional;
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const std::size_t nullopt_hash =
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std::hash<optional<double>>{}(optional<double>{});
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{
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optional<B> opt;
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ASSERT_NOT_NOEXCEPT(std::hash<optional<B>>()(opt));
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ASSERT_NOT_NOEXCEPT(std::hash<optional<const B>>()(opt));
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}
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{
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typedef int T;
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optional<T> opt;
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assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
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opt = 2;
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assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
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}
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{
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typedef std::string T;
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optional<T> opt;
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assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
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opt = std::string("123");
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assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
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}
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{
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typedef std::unique_ptr<int> T;
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optional<T> opt;
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assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
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opt = std::unique_ptr<int>(new int(3));
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assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
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}
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{
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test_hash_enabled_for_type<std::optional<int> >();
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test_hash_enabled_for_type<std::optional<int*> >();
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test_hash_enabled_for_type<std::optional<const int> >();
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test_hash_enabled_for_type<std::optional<int* const> >();
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test_hash_disabled_for_type<std::optional<A>>();
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test_hash_disabled_for_type<std::optional<const A>>();
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test_hash_enabled_for_type<std::optional<B>>();
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test_hash_enabled_for_type<std::optional<const B>>();
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}
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}
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