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

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
  10
  11 // TODO FMT This test should not require std::to_chars(floating-point)
  12 // XFAIL: availability-fp_to_chars-missing
  13
  14 #include <format>
  15
  16 #include <utility>
  17 #include <tuple>
  18
  19 #include "test_macros.h"
  20
  21 // clang-format off
  22
  23 void f() {
  24   TEST_IGNORE_NODISCARD std::format("{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  25   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  26
  27   TEST_IGNORE_NODISCARD std::format("{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  28   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  29
  30   TEST_IGNORE_NODISCARD std::format("{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  31   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  32
  33   TEST_IGNORE_NODISCARD std::format("{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  34   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  35
  36   TEST_IGNORE_NODISCARD std::format("{:m}", std::make_tuple(0, 0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  37   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  38 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  39   TEST_IGNORE_NODISCARD std::format(L"{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  40   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  41
  42   TEST_IGNORE_NODISCARD std::format(L"{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  43   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  44
  45   TEST_IGNORE_NODISCARD std::format(L"{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  46   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  47
  48   TEST_IGNORE_NODISCARD std::format(L"{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
  49   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  50
  51   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}}
  52   // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
  53 #endif
  54 }