char.bad.fail.cpp (1674B)
1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <string_view> 11 // ... manipulating sequences of any non-array trivial standard-layout types. 12 13 #include <string> 14 #include "../basic.string/test_traits.h" 15 16 struct NotTrivial { 17 NotTrivial() : value(3) {} 18 int value; 19 }; 20 21 struct NotStandardLayout { 22 public: 23 NotStandardLayout() : one(1), two(2) {} 24 int sum() const { return one + two; } // silences "unused field 'two' warning" 25 int one; 26 private: 27 int two; 28 }; 29 30 int main() 31 { 32 { 33 // array 34 typedef char C[3]; 35 static_assert(std::is_array<C>::value, ""); 36 std::basic_string_view<C, test_traits<C> > sv; 37 // expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must not be an array"}} 38 } 39 40 { 41 // not trivial 42 static_assert(!std::is_trivial<NotTrivial>::value, ""); 43 std::basic_string_view<NotTrivial, test_traits<NotTrivial> > sv; 44 // expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must be trivial"}} 45 } 46 47 { 48 // not standard layout 49 static_assert(!std::is_standard_layout<NotStandardLayout>::value, ""); 50 std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv; 51 // expected-error-re@string_view:* {{static_assert failed{{.*}} "Character type of basic_string_view must be standard-layout"}} 52 } 53 }