libcxx/test/std/utilities/format/format.tuple/format.functions.format.verify.cpp

   1 //===----------------------------------------------------------------------===//
   2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   3 // See https://llvm.org/LICENSE.txt for license information.
   4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   5 //
   6 //===----------------------------------------------------------------------===//
   7
   8 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
   9
  10 // TODO FMT This test should not require std::to_chars(floating-point)
  11 // XFAIL: availability-fp_to_chars-missing
  12
  13 #include <format>
  14
  15 #include <utility>
  16 #include <tuple>
  17
  18 #include "test_macros.h"
  19
  20 // clang-format off
  21
  22 void f() {
  23   TEST_IGNORE_NODISCARD std::format("{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  24   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  25
  26   TEST_IGNORE_NODISCARD std::format("{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  27   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  28
  29   TEST_IGNORE_NODISCARD std::format("{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  30   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  31
  32   TEST_IGNORE_NODISCARD std::format("{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  33   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  34
  35   TEST_IGNORE_NODISCARD std::format("{:m}", std::make_tuple(0, 0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  36   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  37 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  38   TEST_IGNORE_NODISCARD std::format(L"{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  39   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  40
  41   TEST_IGNORE_NODISCARD std::format(L"{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  42   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  43
  44   TEST_IGNORE_NODISCARD std::format(L"{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  45   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  46
  47   TEST_IGNORE_NODISCARD std::format(L"{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  48   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  49
  50   TEST_IGNORE_NODISCARD std::format(L"{:m}", std::make_tuple(0, 0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  51   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  52 #endif
  53 }