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d2baefae68
All supported compilers that support C++20 now support concepts. So, remove `_LIB_LIBCPP_HAS_NO_CONCEPTS` in favor of `_LIBCPP_STD_VER > 17`. Similarly in the tests, remove `// UNSUPPORTED: libcpp-no-concepts`. Differential Revision: https://reviews.llvm.org/D121528
36 lines
890 B
C++
36 lines
890 B
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
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// UNSUPPORTED: msvc
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// std::ranges::begin
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// std::ranges::cbegin
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// Test the fix for https://llvm.org/PR54100
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#include <ranges>
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#include <cassert>
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#include "test_macros.h"
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struct A {
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int m[0];
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};
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static_assert(sizeof(A) == 0); // an extension supported by GCC and Clang
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int main(int, char**)
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{
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A a[10];
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std::same_as<A*> auto p = std::ranges::begin(a);
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assert(p == a);
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std::same_as<const A*> auto cp = std::ranges::cbegin(a);
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assert(cp == a);
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return 0;
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}
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