libcxx/test/std/containers/sequences/list/list.cons/deduct.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 // <list>
  10 // UNSUPPORTED: c++03, c++11, c++14
  11
  12 // template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
  13 //    list(InputIterator, InputIterator, Allocator = Allocator())
  14 //    -> list<typename iterator_traits<InputIterator>::value_type, Allocator>;
  15 //
  16
  17 #include <list>
  18 #include <iterator>
  19 #include <cassert>
  20 #include <cstddef>
  21 #include <climits> // INT_MAX
  22
  23 struct A {};
  24
  25 int main(int, char**)
  26 {
  27 //  Test the explicit deduction guides
  28
  29 //  Test the implicit deduction guides
  30     {
  31 //  list (allocator &)
  32     std::list lst((std::allocator<int>()));  // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}list'}}
  33 //  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
  34 //  Also, we can't use {} instead of parens, because that constructs a
  35 //      deque<allocator<int>, allocator<allocator<int>>>
  36     }
  37
  38
  39   return 0;
  40 }