ceph/src/boost/libs/contract/test/specify/auto_pre_error.cpp

   1
   2 // Copyright (C) 2008-2018 Lorenzo Caminiti
   3 // Distributed under the Boost Software License, Version 1.0 (see accompanying
   4 // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
   5 // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
   6
   7 // Test auto error after pre (for free func, but same for all contracts).
   8
   9 #include <boost/config.hpp>
  10 // Not just __cplusplus to detect C++17 as MSVC defines it correctly sometimes.
  11 #if     (defined(__cplusplus) && __cplusplus >= 201703L) || \
  12         !defined(BOOST_NO_CXX17_IF_CONSTEXPR)
  13     #error "C++17 copy elision invalidates test so forcing expected failure"
  14 #else
  15
  16 #include <boost/contract/function.hpp>
  17
  18 int main() {
  19     auto c = boost::contract::function() // Error (can't use auto).
  20         .precondition([] {})
  21     ;
  22     return 0;
  23 }
  24
  25 #endif
  26