4fc502368a
`string_view` is supported all the way back to C++03 as an extension in `libc++`, and so many of the tests run in all standards modes for all vendors. This is unlikely desired by other standard library vendors using our test suite. So, disable the tests for vendors other than `libc++` in these older standards modes. Differential Revision: https://reviews.llvm.org/D126850
57 lines
1.7 KiB
C++
57 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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// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
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// <string_view>
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// ... manipulating sequences of any non-array trivial standard-layout types.
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#include <string>
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#include "../basic.string/test_traits.h"
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struct NotTrivial {
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NotTrivial() : value(3) {}
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int value;
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};
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struct NotStandardLayout {
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public:
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NotStandardLayout() : one(1), two(2) {}
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int sum() const { return one + two; } // silences "unused field 'two' warning"
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int one;
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private:
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int two;
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};
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int main(int, char**)
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{
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{
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// array
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typedef char C[3];
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static_assert(std::is_array<C>::value, "");
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std::basic_string_view<C, test_traits<C> > sv;
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// expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must not be an array"}}
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}
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{
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// not trivial
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static_assert(!std::is_trivial<NotTrivial>::value, "");
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std::basic_string_view<NotTrivial, test_traits<NotTrivial> > sv;
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// expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must be trivial"}}
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}
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{
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// not standard layout
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static_assert(!std::is_standard_layout<NotStandardLayout>::value, "");
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std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv;
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// expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must be standard-layout"}}
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}
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return 0;
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}
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