| 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 | |
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| 10 | // TODO FMT This test should not require std::to_chars(floating-point) |
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| 11 | // XFAIL: availability-fp_to_chars-missing |
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| 12 | |
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| 13 | // Basic test to validate ill-formed code is properly detected. |
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| 14 | |
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| 15 | // <format> |
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| 16 | |
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| 17 | // template<class Out, class... Args> |
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| 18 | // format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, |
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| 19 | // format-string<Args...> fmt, const Args&... args); |
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| 20 | // template<class Out, class... Args> |
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| 21 | // format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, |
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| 22 | // wformat-string<Args...> fmt, const Args&... args); |
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| 23 | |
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| 24 | #include <format> |
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| 25 | |
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| 26 | #include "test_macros.h" |
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| 27 | |
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| 28 | extern char* out; |
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| 29 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 30 | extern wchar_t* wout; |
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| 31 | #endif |
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| 32 | |
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| 33 | // clang-format off |
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| 34 | |
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| 35 | void f() { |
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| 36 | std::format_to_n(out, 42, "{" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 37 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 38 | |
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| 39 | std::format_to_n(out, 42, "}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 40 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 41 | |
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| 42 | std::format_to_n(out, 42, "{}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 43 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 44 | |
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| 45 | std::format_to_n(out, 42, "{0}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 46 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 47 | |
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| 48 | std::format_to_n(out, 42, "{:-}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 49 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 50 | |
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| 51 | std::format_to_n(out, 42, "{:#}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 52 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 53 | |
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| 54 | std::format_to_n(out, 42, "{:L}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 55 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 56 | |
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| 57 | std::format_to_n(out, 42, "{0:{0}}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 58 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 59 | |
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| 60 | std::format_to_n(out, 42, "{:.42d}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 61 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 62 | |
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| 63 | std::format_to_n(out, 42, "{:d}" , "Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 64 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 65 | |
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| 66 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 67 | std::format_to_n(wout, 42, L"{" ); // 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 | std::format_to_n(wout, 42, L"}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 71 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 72 | |
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| 73 | std::format_to_n(wout, 42, L"{}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 74 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 75 | |
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| 76 | std::format_to_n(wout, 42, L"{0}" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 77 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 78 | |
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| 79 | std::format_to_n(wout, 42, L"{:-}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 80 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 81 | |
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| 82 | std::format_to_n(wout, 42, L"{:#}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 83 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 84 | |
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| 85 | std::format_to_n(wout, 42, L"{:L}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 86 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 87 | |
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| 88 | std::format_to_n(wout, 42, L"{0:{0}}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 89 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 90 | |
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| 91 | std::format_to_n(wout, 42, L"{:.42d}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 92 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 93 | |
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| 94 | std::format_to_n(wout, 42, L"{:d}" , L"Forty-two" ); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}} |
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| 95 | // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}} |
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| 96 | #endif |
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| 97 | } |
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| 98 | |
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