C++ 铿锵++；windows中的4.0.0编译错误_C++_Windows_Clang_Visual Studio 2017_Llvm Clang

C++ 铿锵++；windows中的4.0.0编译错误

c++ windows clang visual-studio-2017

C++ 铿锵++；windows中的4.0.0编译错误,c++,windows,clang,visual-studio-2017,llvm-clang,C++,Windows,Clang,Visual Studio 2017,Llvm Clang,我使用的是在Windows10（32位操作系统，x86处理器）上从源代码编译的Clang4.0.0。我正在尝试将我的cpp代码编译为ll格式的llvm ir代码。下面是一个无法使用clang编译的示例代码： #include <windows.h> #include <tlhelp32.h> #include <fstream> #include <mapi.h> #include <memory> #include<stdio

我使用的是在Windows10（32位操作系统，x86处理器）上从源代码编译的Clang4.0.0。我正在尝试将我的cpp代码编译为ll格式的llvm ir代码。下面是一个无法使用clang编译的示例代码：

#include <windows.h>
#include <tlhelp32.h>
#include <fstream>
#include <mapi.h>
#include <memory>
#include<stdio.h>

/* Function to calculate x raised to the power y */
int power(int x, unsigned int y)
{
    if (y == 0)
        return 1;
    else if (y%2 == 0)
        return power(x, y/2)*power(x, y/2);
    else
        return x*power(x, y/2)*power(x, y/2);
}

/* Program to test function power */
int main()
{
    int x = 2;
    unsigned int y = 3;

    printf("%d", power(x, y));
    return 0;
}

在编译时，我得到以下错误：

C:\Sample>clang++ -emit-llvm -S assiral.cpp -o assiral.ll
In file included from assiral.cpp:3:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:7:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\cmath:617:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtgmath.h:9:
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:204:22: error:
use of undeclared identifier 'char16_t'
struct _Is_integral<char16_t>
^
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:210:22: error:
use of undeclared identifier 'char32_t'
struct _Is_integral<char32_t>
^
In file included from assiral.cpp:3:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\exception:7:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\type_traits:6:
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstddef:257:2: error: 'auto'
  return without trailing return type; deduced return types are a C++14 extension
auto _Unfancy(_Ptrty _Ptr)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:8:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:612:33: error: use of
  undeclared identifier 'char16_t'
  template<> class numeric_limits<char16_t>
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:902:33: error: use of
  undeclared identifier 'char32_t'
  template<> class numeric_limits<char32_t>
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\utility:7:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:254:21: error: use of
  undeclared identifier 'char16_t'
  struct char_traits<char16_t>
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:263:21: error: use of
  undeclared identifier 'char32_t'
  struct char_traits<char32_t>
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:698:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Unchecked_n(_Iter _Src, _Diff)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:742:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Unchecked_n_backward(_Iter _Src, _Diff)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:1142:12: error:
  deduced return types are a C++14 extension
constexpr decltype(auto) _Operator_arrow(_Iterator&& _Target, false_type)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:356:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Const_cast(_Ptrty _Ptr)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:366:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Const_cast(_Ty * _Ptr)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:75:2: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; ; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:119:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - _Needle_size); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:144:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:169:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:188:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:213:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:233:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  fatal error: too many errors emitted, stopping now [-ferror-limit=]
  20 errors generated.

C:\Sample>clang++-emit llvm-S assiral.cpp-o assiral.ll
在assiral.cpp中包含的文件中：3：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6中的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6中的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios中包含的文件中：6:
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:7中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\cmath:617中包含的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtgmath.h:9中的文件中：
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:204:22:错误：
使用未声明的标识符“char16\t”
结构是积分的
^
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:210:22:错误：
使用未声明的标识符“char32\t”
结构是积分的
^
在assiral.cpp中包含的文件中：3：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6中的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6中的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios中包含的文件中：6:
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale中包含的文件中：8：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:6中的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\exception中包含的文件中：7：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\type\u中的文件中：6：
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstddef:257:2:错误：“自动”
不带尾随返回类型的返回；导出的返回类型是一个C++14扩展
自动失效
^
在assiral.cpp中包含的文件中：3：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6中的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6中的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios中包含的文件中：6:
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale中包含的文件中：8：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7中的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\x中的文件中字符串：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:8中包含的文件中：
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:612:33:错误：使用
未声明的标识符“char16\t”
模板类数值限制
^
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:902:33:错误：使用
未声明的标识符“char32\t”
模板类数值限制
^
在assiral.cpp中包含的文件中：3：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6中的文件中：
包含在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6中的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream中包含的文件中：6：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios中包含的文件中：6:
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6中包含的文件中：
在C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase中包含的文件中：6：
在f
C:\Sample>clang++ -emit-llvm -S assiral.cpp -o assiral.ll
In file included from assiral.cpp:3:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:7:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\cmath:617:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtgmath.h:9:
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:204:22: error:
use of undeclared identifier 'char16_t'
struct _Is_integral<char16_t>
^
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xtr1common:210:22: error:
use of undeclared identifier 'char32_t'
struct _Is_integral<char32_t>
^
In file included from assiral.cpp:3:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:6:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\exception:7:
In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\type_traits:6:
C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstddef:257:2: error: 'auto'
  return without trailing return type; deduced return types are a C++14 extension
auto _Unfancy(_Ptrty _Ptr)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:8:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:612:33: error: use of
  undeclared identifier 'char16_t'
  template<> class numeric_limits<char16_t>
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\limits:902:33: error: use of
  undeclared identifier 'char32_t'
  template<> class numeric_limits<char32_t>
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\utility:7:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:254:21: error: use of
  undeclared identifier 'char16_t'
  struct char_traits<char16_t>
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\iosfwd:263:21: error: use of
  undeclared identifier 'char32_t'
  struct char_traits<char32_t>
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:10:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:698:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Unchecked_n(_Iter _Src, _Diff)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:742:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Unchecked_n_backward(_Iter _Src, _Diff)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xutility:1142:12: error:
  deduced return types are a C++14 extension
constexpr decltype(auto) _Operator_arrow(_Iterator&& _Target, false_type)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:6:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:356:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Const_cast(_Ptrty _Ptr)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xmemory0:366:2: error:
  'auto' return without trailing return type; deduced return types are a C++14 extension
auto _Const_cast(_Ty * _Ptr)
  ^
  In file included from assiral.cpp:3:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\fstream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\includem:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ostream:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\ios:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:10:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\streambuf:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xiosbase:6:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocale:8:
  In file included from C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\stdexcept:7:
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:75:2: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; ; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:119:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - _Needle_size); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:144:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:169:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:188:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Min_value(_Start_at, _Hay_size - 1); ; --_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:213:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  C:\Program Files\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xstring:233:3: error:
  statement not allowed in constexpr function
  for (auto _Match_try = _Haystack + _Start_at; _Match_try < _End; ++_Match_try)
  ^
  fatal error: too many errors emitted, stopping now [-ferror-limit=]
  20 errors generated.

link fatal error lnk1104 cannot open file 'libcmt.lib'

C:\Program Files\Microsoft Visual Studio 14.0\VC\lib