34d4f0c136
We've built up quite a few links directly to github within the code base. We should instead use `llvm.org/PR<issue-number>` to link to bugs, since that is resilient to the bug tracker changing in the future. This is especially relevant for tests linking to bugs, since they will probably be there for decades to come. A nice side effect is that these links are significantly shorter than the GH links, making them much less of an eyesore. This patch also replaces a few links that linked to the old bugzilla instance on llvm.org.
58 lines
1.7 KiB
C++
58 lines
1.7 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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// Pin down the ABI of associative containers with respect to their size and alignment
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// when passed a comparator that is a reference.
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//
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// While it's not even clear that reference comparators are legal in containers, an
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// unintended ABI break was discovered after implementing the new compressed pair
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// mechanism based on [[no_unique_address]], and this is a regression test for that.
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// If we decide to make reference comparators ill-formed, this test would become
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// unnecessary.
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//
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// See https://llvm.org/PR118559 for more details.
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#include <set>
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#include <map>
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#include "test_macros.h"
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struct TEST_ALIGNAS(16) Cmp {
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bool operator()(int, int) const;
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};
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template <class Compare>
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struct Set {
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char b;
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std::set<int, Compare> s;
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};
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template <class Compare>
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struct Multiset {
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char b;
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std::multiset<int, Compare> s;
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};
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template <class Compare>
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struct Map {
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char b;
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std::map<int, char, Compare> s;
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};
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template <class Compare>
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struct Multimap {
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char b;
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std::multimap<int, char, Compare> s;
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};
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static_assert(sizeof(Set<Cmp&>) == sizeof(Set<bool (*)(int, int)>), "");
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static_assert(sizeof(Multiset<Cmp&>) == sizeof(Multiset<bool (*)(int, int)>), "");
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static_assert(sizeof(Map<Cmp&>) == sizeof(Map<bool (*)(int, int)>), "");
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static_assert(sizeof(Multimap<Cmp&>) == sizeof(Multimap<bool (*)(int, int)>), "");
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