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59 lines
2.2 KiB
C++
59 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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// <queue>
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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// UNSUPPORTED: libcpp-no-deduction-guides
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#include <queue>
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#include <deque>
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#include <iterator>
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#include <cassert>
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#include <cstddef>
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int main()
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{
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// Test the explicit deduction guides
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{
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// queue(Compare, Container, const Alloc);
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// The '45' is not an allocator
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std::priority_queue pri(std::greater<int>(), std::deque<int>({1,2,3}), 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
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}
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{
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// queue(const queue&, const Alloc&);
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// The '45' is not an allocator
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std::priority_queue<int> source;
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std::priority_queue pri(source, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
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}
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{
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// priority_queue(Iter, Iter, Comp)
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// int is not an iterator
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std::priority_queue pri(15, 17, std::greater<double>()); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
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}
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{
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// priority_queue(Iter, Iter, Comp, Container)
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// float is not an iterator
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std::priority_queue pri(23.f, 2.f, std::greater<float>(), std::deque<float>()); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
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}
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// Test the implicit deduction guides
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{
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// priority_queue (allocator &)
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std::priority_queue pri((std::allocator<int>())); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
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// Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
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// Also, we can't use {} instead of parens, because that constructs a
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// stack<allocator<int>, allocator<allocator<int>>>
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}
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}
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