【发布时间】：2018-06-12 09:07:40
【问题描述】：
下载后https://github.com/pybind/pybind11/archive/v2.2.3.zip 并创建一个简单的 cpp 文件：
#include <pybind11/pybind11.h>
int add(int i, int j) { return i + j; }
PYBIND11_MODULE(example, m) {
m.doc() = "pybind11 example plugin"; // optional module docstring
m.def("add", &add, "A function which adds two numbers");
}
与
我收到此错误
Error C2446 '<': no conversion from 'unsigned __int64' to 'unsigned __int64 *' in c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector line 2326
有谁知道这可能指的是什么，以及可能如何解决它？
根据要求，这里是完整的错误日志：
1>------ Rebuild All started: Project: Test_CreatePythonBindings, Configuration: Debug x64 ------
1>example.cpp
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2326): error C2446: '<': no conversion from 'unsigned __int64' to 'unsigned __int64 *'
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2326): note: Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2325): note: while compiling class template member function 'std::_Vb_const_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>> &std::_Vb_const_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>>::operator +=(__int64)'
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2545): note: see reference to function template instantiation 'std::_Vb_const_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>> &std::_Vb_const_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>>::operator +=(__int64)' being compiled
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2490): note: see reference to class template instantiation 'std::_Vb_const_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>>' being compiled
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(3094): note: see reference to class template instantiation 'std::_Vb_iterator<std::_Wrap_alloc<std::allocator<std::_Vbase>>>' being compiled
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(3093): note: while compiling class template member function 'void std::vector<bool,std::allocator<_Ty>>::push_back(const bool &)'
1> with
1> [
1> _Ty=bool
1> ]
1>c:\pybind11-2.2.3\include\pybind11\pybind11.h(513): note: see reference to function template instantiation 'void std::vector<bool,std::allocator<_Ty>>::push_back(const bool &)' being compiled
1> with
1> [
1> _Ty=bool
1> ]
1>c:\pybind11-2.2.3\include\pybind11\cast.h(1806): note: see reference to class template instantiation 'std::vector<bool,std::allocator<_Ty>>' being compiled
1> with
1> [
1> _Ty=bool
1> ]
1>c:\program files (x86)\microsoft visual studio\2017\professional\vc\tools\msvc\14.14.26428\include\vector(2326): warning C4554: '&': check operator precedence for possible error; use parentheses to clarify precedence
1>Done building project "Test_CreatePythonBindings.vcxproj" -- FAILED.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
【问题讨论】：
-
切换到下方窗格中的“构建”视图并将文本粘贴到此处。那里会有更多信息。这个错误源于向量实现，但不是发生的地方。
-
另外，尝试生成minimal reproducible example（注意那里的“完成”）。
-
@BJovke 添加了完整的输出，希望对您有所帮助。
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是的，这有帮助，错误在“cast.h”中。我得看看。
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实际上错误在“pybind11.h”中，但您发布的错误日志中的行与您在问题中引用的 ZIP 文件中的行不匹配。所以代码可能不一样。您可以重新下载 ZIP 文件，再次使用它构建并再次发布错误吗？
标签： c++ c++11 type-conversion pybind11