| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // UNSUPPORTED: libcpp-has-no-incomplete-format |
| |
| // libc++ supports basic_format_string in C++20 as an extension |
| // UNSUPPORTED: !stdlib=libc++ && c++20 |
| |
| // <format> |
| |
| // template<class charT, class... Args> |
| // class basic_format_string<charT, type_identity_t<Args>...> |
| // |
| // template<class T> consteval basic_format_string(const T& s); |
| // |
| // This constructor does the compile-time format string validation for the |
| // std::format* functions. |
| |
| #include <format> |
| |
| #include <string_view> |
| |
| #include "test_macros.h" |
| |
| void run() { |
| (void)std::basic_format_string<char>{"foo"}; |
| (void)std::basic_format_string<char>{"{}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<char, int>{"{0:{0}P}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<char, int>{"{0:{0}}"}; |
| (void)std::basic_format_string<char, bool>{"{0:{0}}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<char, int>{"{.3}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| (void)std::basic_format_string<wchar_t>{L"foo"}; |
| (void)std::basic_format_string<wchar_t>{L"{}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<wchar_t, int>{L"{0:{0}P}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<wchar_t, int>{L"{0:{0}}"}; |
| (void)std::basic_format_string<wchar_t, bool>{L"{0:{0}}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| (void)std::basic_format_string<wchar_t, int>{L"{.3}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}} |
| #endif |
| } |