Boost 协程由于对 callcc 的不明确调用而无法编译

我正在尝试在工作中的C 项目中使用Coroutines。但是，由于callcc()的模棱两可，它不会编译。我尝试在Coroutine构造器中指定分配器，但这似乎并没有差异。

将代码删除到其最少的必需品后，我最终以与Boost文档中的fibbonacci示例相似的内容重现了问题。

#include <iostream>
#include <boost/coroutine2/all.hpp>
/*
    c++ -std=c++11 -o corofib corofib.cpp
*/
typedef boost::coroutines2::coroutine<unsigned long> coro_t;
coro_t::pull_type generator(
    [](coro_t::push_type& sink) {
        unsigned long first = 1L;
        unsigned long second = 1L;
        unsigned long answer;
        sink(first);
        sink(second);
        while(1) {
            answer = first + second;
            first = second;
            second = answer;
            sink(answer);
        };
    }
);

int main(int argc, char* argv[]) {
    generator();
    std::cout << generator.get() << std::endl;
    generator();
    std::cout << generator.get() << std::endl;
    generator();
    std::cout << generator.get() << std::endl;
    generator();
    std::cout << generator.get() << std::endl;
}

我正在使用：

• Boost 1.64
• GCC版本4.9.2
• Linux deLegato 3.16.0-4-AMD64＃1 SMPDebian 3.16.39-1 DEB8U2(2017-03-07(X86_64 GNU/Linux

这是我收到的错误消息。我已经删除了"要求"通知，以缩短这篇文章：

lear@delegato:~/lamu$ c++ -std=c++14 -o corofib corofib.cpp
In file included from /usr/local/include/boost/coroutine2/detail/coroutine.hpp:48:0,
                 from /usr/local/include/boost/coroutine2/coroutine.hpp:15,
                 from /usr/local/include/boost/coroutine2/all.hpp:10,
                 from corofib.cpp:2:
/usr/local/include/boost/coroutine2/detail/pull_control_block_cc.ipp: In instantiation of ‘boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]’:
/usr/local/include/boost/coroutine2/detail/pull_control_block_cc.ipp:105:14: error: call of overloaded ‘callcc(const std::allocator_arg_t&, boost::context::preallocated&, boost::context::basic_fixedsize_stack<boost::context::stack_traits>&, boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]::<lambda(boost::context::continuation&&)>)’ is ambiguous
             });
              ^
/usr/local/include/boost/coroutine2/detail/pull_control_block_cc.ipp:105:14: note: candidates are:
In file included from /usr/local/include/boost/coroutine2/detail/pull_control_block_cc.hpp:14:0,
                 from /usr/local/include/boost/coroutine2/detail/coroutine.hpp:37,
                 from /usr/local/include/boost/coroutine2/coroutine.hpp:15,
                 from /usr/local/include/boost/coroutine2/all.hpp:10,
                 from corofib.cpp:2:
/usr/local/include/boost/context/continuation.hpp:469:1: note: boost::context::continuation boost::context::callcc(std::allocator_arg_t, StackAlloc, Fn&&, Arg ...) [with StackAlloc = boost::context::preallocated; Fn = boost::context::basic_fixedsize_stack<boost::context::stack_traits>&; Arg = {boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]::<lambda(boost::context::continuation&&)>}]
 callcc( std::allocator_arg_t, StackAlloc salloc, Fn && fn, Arg ... arg) {
 ^
/usr/local/include/boost/context/continuation.hpp:483:1: note: boost::context::continuation boost::context::callcc(std::allocator_arg_t, boost::context::preallocated, StackAlloc, Fn&&, Arg ...) [with StackAlloc = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]::<lambda(boost::context::continuation&&)>; Arg = {}]
 callcc( std::allocator_arg_t, preallocated palloc, StackAlloc salloc, Fn && fn, Arg ... arg) {
 ^
/usr/local/include/boost/context/continuation.hpp:514:1: note: boost::context::continuation boost::context::callcc(std::allocator_arg_t, boost::context::preallocated, StackAlloc, Fn&&) [with StackAlloc = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]::<lambda(boost::context::continuation&&)>]
 callcc( std::allocator_arg_t, preallocated palloc, StackAlloc salloc, Fn && fn) {
 ^
/usr/local/include/boost/context/continuation.hpp:457:1: note: boost::context::continuation boost::context::callcc(Fn&&, Arg ...) [with Fn = const std::allocator_arg_t&; Arg = {boost::context::preallocated, boost::context::basic_fixedsize_stack<boost::context::stack_traits>, boost::coroutines2::detail::pull_coroutine<T>::control_block::control_block(boost::context::preallocated, StackAllocator, Fn&&) [with StackAllocator = boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn = <lambda(boost::coroutines2::coroutine<long unsigned int>::push_type&)>; T = long unsigned int]::<lambda(boost::context::continuation&&)>}; <template-parameter-1-3> = void]
 callcc( Fn && fn, Arg ... arg) {

我认为代码基本上是合理的：我只需要以某种方式击败这个。

我可以说些关于在python中要做的事情，但可能会引起笑声。