libcxx/test/std/re/re.regex/re.regex.construct/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 // <regex>
  10 // UNSUPPORTED: c++03, c++11, c++14
  11
  12 // template<class ForwardIterator>
  13 // basic_regex(ForwardIterator, ForwardIterator,
  14 //             regex_constants::syntax_option_type = regex_constants::ECMAScript)
  15 // -> basic_regex<typename iterator_traits<ForwardIterator>::value_type>;
  16
  17 #include <regex>
  18 #include <string>
  19 #include <iterator>
  20 #include <cassert>
  21 #include <cstddef>
  22
  23
  24 int main(int, char**)
  25 {
  26     // Test the explicit deduction guides
  27     {
  28     // basic_regex(ForwardIterator, ForwardIterator)
  29     // <int> is not an iterator
  30     std::basic_regex re(23, 34);   // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}basic_regex'}}
  31     }
  32
  33     {
  34     // basic_regex(ForwardIterator, ForwardIterator, flag_type)
  35     // <double> is not an iterator
  36     std::basic_regex re(23.0, 34.0, std::regex_constants::basic);   // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}basic_regex'}}
  37     }
  38
  39     return 0;
  40 }