9c4a716c12
This patch improves the preservation of qualifiers and loss of type sugar in TemplateNames. This problem is analogous to https://reviews.llvm.org/D112374 and this patch takes a very similar approach to that patch, except the impact here is much lesser. When a TemplateName was written bare, without qualifications, we wouldn't produce a QualifiedTemplate which could be used to disambiguate it from a Canonical TemplateName. This had effects in the TemplateName printer, which had workarounds to deal with this, and wouldn't print the TemplateName as-written in most situations. There are also some related fixes to help preserve this type sugar along the way into diagnostics, so that this patch can be properly tested. - Fix dropping the template keyword. - Fix type deduction to preserve sugar in TST TemplateNames.
47 lines
1.6 KiB
C++
47 lines
1.6 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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// <queue>
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// UNSUPPORTED: c++03, c++11, c++14
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#include <queue>
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#include <list>
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#include <iterator>
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#include <cassert>
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#include <cstddef>
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int main(int, char**)
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{
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// Test the explicit deduction guides
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{
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// queue(const Container&, const Alloc&);
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// The '45' is not an allocator
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std::queue que(std::list<int>{1,2,3}, 45); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}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::queue<int> source;
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std::queue que(source, 45); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}queue'}}
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}
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// Test the implicit deduction guides
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{
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// queue (allocator &)
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std::queue que((std::allocator<int>())); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}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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return 0;
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}
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