1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14) 10 11 // XFAIL: FROZEN-CXX03-HEADERS-FIXME 12 13 // <string_view> 14 // ... manipulating sequences of any non-array trivial standard-layout types. 15 16 #include <string> 17 #include "../basic.string/test_traits.h" 18 19 struct NotTrivial { 20 NotTrivial() : value(3) {} 21 int value; 22 }; 23 24 struct NotStandardLayout { 25 public: 26 NotStandardLayout() : one(1), two(2) {} 27 int sum() const { return one + two; } // silences "unused field 'two' warning" 28 int one; 29 30 private: 31 int two; 32 }; 33 34 int main(int, char**) { 35 { 36 // array 37 typedef char C[3]; 38 static_assert(std::is_array<C>::value, ""); 39 std::basic_string_view<C, test_traits<C> > sv; 40 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must not be an array}} 41 } 42 43 { 44 // not trivial 45 static_assert(!std::is_trivial<NotTrivial>::value, ""); 46 std::basic_string_view<NotTrivial, test_traits<NotTrivial> > sv; 47 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be trivial}} 48 } 49 50 { 51 // not standard layout 52 static_assert(!std::is_standard_layout<NotStandardLayout>::value, ""); 53 std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv; 54 // expected-error-re@string_view:* {{static assertion failed{{.*}}Character type of basic_string_view must be standard-layout}} 55 } 56 57 return 0; 58 } 59