Here is a short version of the code I'm trying to compile.
#include <iostream> #include <functional> #include <memory> void foo(std::shared_ptr<int> b, unsigned int i) { std::cout << *b << " - " << i << std::endl; } int main() { using namespace std::placeholders; typedef std::function<void(std::shared_ptr<int> b, unsigned int i)> Foo; typedef std::function<void(unsigned int code)> Bar; Foo f1 = foo; Bar f2 = std::bind(f1, std::make_shared<int>(10), _1); f2(0); return 0; }
g++-4.7 --version gives g ++ - 4.7 (GCC) 4.7.1
g++-4.7 -std=c++11 test.cpp && ./a.out 10 - 0
c++ --version provides Apple clang version 4.0 (tags / Apple / clang-421.0.60) (based on LLVM 3.1svn)
c++ -std=c++11 -stdlib=libc++ test.cpp In file included from test.cpp:3: In file included from /usr/bin/../lib/c++/v1/iostream:38: In file included from /usr/bin/../lib/c++/v1/ios:216: In file included from /usr/bin/../lib/c++/v1/__locale:18: In file included from /usr/bin/../lib/c++/v1/mutex:177: /usr/bin/../lib/c++/v1/functional:1642:8: error: no type named 'type' in 'std::__1::__invoke_of<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int> &, std::__1::shared_ptr<int> &&>' >::type type; ~~~^~~~ /usr/bin/../lib/c++/v1/functional:1721:18: note: in instantiation of template class 'std::__1::__bind_return<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)>, std::__1::tuple<std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1>>, std::__1::tuple<std::__1::shared_ptr<int> &&, unsigned int &&>>' requested here typename __bind_return<_Fd, _Td, tuple<_Args&&...> >::type ^ /usr/bin/../lib/c++/v1/functional:1722:9: note: while substituting deduced template arguments into function template 'operator()' [with _Args = <std::__1::shared_ptr<int>, unsigned int>] operator()(_Args&& ...__args) ^ /usr/bin/../lib/c++/v1/type_traits:2971:1: note: while substituting deduced template arguments into function template '__invoke' [with _Fp = std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &> &, _Args = <no value>] __invoke(_Fp&& __f, _Args&& ...__args) ^ /usr/bin/../lib/c++/v1/type_traits:2989:11: note: in instantiation of template class 'std::__1::__invokable_imp<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &> &, std::__1::shared_ptr<int>, unsigned int>' requested here __invokable_imp<_Fp, _Args...>::value> ^ /usr/bin/../lib/c++/v1/functional:1115:33: note: in instantiation of template class 'std::__1::__invokable<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &> &, std::__1::shared_ptr<int>, unsigned int>' requested here template <class _Fp, bool = __invokable<_Fp&, _ArgTypes...>::value> ^ /usr/bin/../lib/c++/v1/functional:1141:35: note: (skipping 13 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) typename enable_if<__callable<_Fp>::value>::type* = 0); ^ /usr/bin/../lib/c++/v1/memory:2218:20: note: in instantiation of template class 'std::__1::is_nothrow_move_constructible<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>>' requested here _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && ^ /usr/bin/../lib/c++/v1/__config:253:34: note: expanded from macro '_NOEXCEPT_' # define _NOEXCEPT_(x) noexcept(x) ^ /usr/bin/../lib/c++/v1/memory:2386:15: note: in instantiation of template class 'std::__1::__libcpp_compressed_pair_imp<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>, std::__1::allocator<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>>, 2>' requested here : private __libcpp_compressed_pair_imp<_T1, _T2> ^ /usr/bin/../lib/c++/v1/functional:988:36: note: in instantiation of template class 'std::__1::__compressed_pair<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>, std::__1::allocator<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>>>' requested here __compressed_pair<_Fp, _Alloc> __f_; ^ /usr/bin/../lib/c++/v1/functional:1273:13: note: in instantiation of template class 'std::__1::__function::__func<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>, std::__1::allocator<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &>>, void (unsigned int)>' requested here if (sizeof(_FF) <= sizeof(__buf_) && is_nothrow_copy_constructible<_Fp>::value) ^ test.cpp:21:12: note: in instantiation of function template specialization 'std::__1::function<void (unsigned int)>::function<std::__1::__bind<std::__1::function<void (std::__1::shared_ptr<int>, unsigned int)> &, std::__1::shared_ptr<int>, std::__1::placeholders::__ph<1> &> >' requested here Bar f2 = std::bind(f1, std::make_shared<int>(10), _1); ^ 1 error generated.
Is there something wrong with my code?
Thanks.