| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 3 | // See https://llvm.org/LICENSE.txt for license information. |
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| 4 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 5 | // |
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| 6 | //===----------------------------------------------------------------------===// |
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| 7 | |
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| 8 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 9 | // UNSUPPORTED: no-localization |
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| 10 | |
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| 11 | // TODO FMT This test should not require std::to_chars(floating-point) |
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| 12 | // XFAIL: availability-fp_to_chars-missing |
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| 13 | |
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| 14 | // Basic test to validate ill-formed code is properly detected. |
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| 15 | |
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| 16 | // <format> |
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| 17 | |
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| 18 | // template<class Out, class... Args> |
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| 19 | // format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, |
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| 20 | // const locale& loc, format-string<Args...> fmt, |
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| 21 | // const Args&... args); |
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| 22 | // template<class Out, class... Args> |
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| 23 | // format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, |
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| 24 | // const locale& loc, wformat-string<Args...> fmt, |
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| 25 | // const Args&... args); |
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| 26 | |
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| 27 | #include <format> |
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| 28 | #include <locale> |
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| 29 | |
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| 30 | #include "test_macros.h" |
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| 31 | |
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| 32 | extern char* out; |
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| 33 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 34 | extern wchar_t* wout; |
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| 35 | #endif |
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| 36 | |
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| 37 | // clang-format off |
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| 38 | |
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| 39 | void f() { |
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| 40 | std::format_to_n(out, 42, std::locale(), "{" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 41 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 42 | |
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| 43 | std::format_to_n(out, 42, std::locale(), "}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 44 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 45 | |
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| 46 | std::format_to_n(out, 42, std::locale(), "{}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 47 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 48 | |
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| 49 | std::format_to_n(out, 42, std::locale(), "{0}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 50 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 51 | |
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| 52 | std::format_to_n(out, 42, std::locale(), "{:-}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 53 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 54 | |
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| 55 | std::format_to_n(out, 42, std::locale(), "{:#}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 56 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 57 | |
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| 58 | std::format_to_n(out, 42, std::locale(), "{:L}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 59 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 60 | |
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| 61 | std::format_to_n(out, 42, std::locale(), "{0:{0}}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 62 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 63 | |
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| 64 | std::format_to_n(out, 42, std::locale(), "{:.42d}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 65 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 66 | |
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| 67 | std::format_to_n(out, 42, std::locale(), "{:d}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 68 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 69 | |
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| 70 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 71 | std::format_to_n(wout, 42, std::locale(), L"{" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 72 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 73 | |
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| 74 | std::format_to_n(wout, 42, std::locale(), L"}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 75 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 76 | |
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| 77 | std::format_to_n(wout, 42, std::locale(), L"{}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 78 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 79 | |
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| 80 | std::format_to_n(wout, 42, std::locale(), L"{0}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 81 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 82 | |
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| 83 | std::format_to_n(wout, 42, std::locale(), L"{:-}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 84 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 85 | |
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| 86 | std::format_to_n(wout, 42, std::locale(), L"{:#}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 87 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 88 | |
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| 89 | std::format_to_n(wout, 42, std::locale(), L"{:L}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 90 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 91 | |
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| 92 | std::format_to_n(wout, 42, std::locale(), L"{0:{0}}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 93 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 94 | |
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| 95 | std::format_to_n(wout, 42, std::locale(), L"{:.42d}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 96 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 97 | |
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| 98 | std::format_to_n(wout, 42, std::locale(), L"{:d}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 99 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 100 | #endif |
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| 101 | } |
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| 102 | |
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