b71255705b
Fixes #135351 This PR update CATD guides to associative containers (`std::map`, `std::multimap`, `std::unordered_map`, `std::unordered_multimap`, `std::flat_map`, `std::flat_multimap`). - Updated template alias for deduction guides for the relevant associative containers. - Added a new test to verify the deduction guides with `std::map`, `std::multimap`, `std::unordered_map`, `std::unordered_multimap`, `std::flat_map`, `std::flat_multimap`.
72 lines
3.1 KiB
C++
72 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// <flat_map>
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// Test CTAD on cases where deduction should fail.
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#include <array>
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#include <flat_map>
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#include <functional>
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#include <tuple>
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#include <utility>
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struct NotAnAllocator {
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friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
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};
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using P = std::pair<int, long>;
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using PC = std::pair<const int, long>;
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void test() {
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_multimap m{{1, 1L}, {2, 2L}, {3, 3L}};
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_multimap m({{1, 1L}, {2, 2L}, {3, 3L}}, std::less<int>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_multimap m({{1, 1L}, {2, 2L}, {3, 3L}}, std::less<int>(), std::allocator<PC>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// cannot deduce that the inner braced things should be std::pair and not something else
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std::flat_multimap m({{1, 1L}, {2, 2L}, {3, 3L}}, std::allocator<PC>());
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// since we have parens, not braces, this deliberately does not find the initializer_list constructor
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std::flat_multimap m(P{1, 1L});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// since we have parens, not braces, this deliberately does not find the initializer_list constructor
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std::flat_multimap m(PC{1, 1L});
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// expected-error-re@-1{{{{no viable constructor or deduction guide for deduction of template arguments of '.*flat_multimap'}}}}
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}
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{
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// cannot deduce from tuple-like objects without proper iterator
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std::tuple<int, double> t{1, 2.0};
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std::flat_multimap m(t);
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// expected-error-re@-1{{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}flat_multimap'}}
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}
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{
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// cannot deduce from array-like objects without proper iterator
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std::array<int, 2> arr{1, 2};
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std::flat_multimap m(arr);
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// expected-error-re@-1{{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}flat_multimap'}}
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}
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}
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