libcxx/test/std/containers/sequences/array/array.swap/swap.fail.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 // GCC 5 does not evaluate static assertions dependent on a template parameter.
  10 // UNSUPPORTED: gcc-5
  11
  12 // <array>
  13
  14 // void swap(array& a);
  15
  16 #include <array>
  17 #include <cassert>
  18
  19 // std::array is explicitly allowed to be initialized with A a = { init-list };.
  20 // Disable the missing braces warning for this reason.
  21 #include "disable_missing_braces_warning.h"
  22
  23 int main(int, char**) {
  24   {
  25     typedef double T;
  26     typedef std::array<const T, 0> C;
  27     C c = {};
  28     C c2 = {};
  29     // expected-error-re@array:* {{static_assert failed {{.*}}"cannot swap zero-sized array of type 'const T'"}}
  30     c.swap(c2); // expected-note {{requested here}}
  31   }
  32
  33   return 0;
  34 }