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comparison gcc/testsuite/g++.dg/cpp2a/udlit-class-nttp-ctad.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 // PR c++/88095
2 // Test class non-type template parameters for literal operator templates.
3 // Validate support for class template argument deduction.
4 // { dg-do compile { target c++2a } }
5
6 namespace std {
7 using size_t = decltype(sizeof(int));
8 }
9
10 template <typename CharT, std::size_t N>
11 struct fixed_string {
12 constexpr static std::size_t length = N;
13 constexpr fixed_string(...) { }
14 // auto operator<=> (const fixed_string&) = default;
15 };
16 template <typename CharT, std::size_t N>
17 fixed_string(const CharT (&str)[N]) -> fixed_string<CharT, N>;
18
19 template <fixed_string fs>
20 constexpr std::size_t operator"" _udl() {
21 return decltype(fs)::length;
22 }
23
24 static_assert("test"_udl == 5);