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标题: xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false”(性能警告) [打印本页]

作者: 清泛网 时间: 2016-05-06 10:15
标题: xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false”(性能警告)
1>C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false”(性能警告)
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1775): 参见对正在编译的函数模板实例化“std::pair<_Ty1,_Ty2> std::_Tree<_Traits>::_Insert_nohint<std::pair<const _Kty,_Ty>&,_Nodety>(bool,_Valty,_Nodety)”的引用
1>       with
1>       [
1>             _Ty1=std::_Tree_iterator<std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>>,
1>             _Ty2=bool,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Kty=std::string,
1>             _Ty=CPTCensorStatusItem *,
1>             _Nodety=std::_Tree_node<std::pair<const std::string,CPTCensorStatusItem *>,void *> *,
1>             _Valty=std::pair<const std::string,CPTCensorStatusItem *> &
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1775): 参见对正在编译的函数模板实例化“std::pair<_Ty1,_Ty2> std::_Tree<_Traits>::_Insert_nohint<std::pair<const _Kty,_Ty>&,_Nodety>(bool,_Valty,_Nodety)”的引用
1>       with
1>       [
1>             _Ty1=std::_Tree_iterator<std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>>,
1>             _Ty2=bool,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Kty=std::string,
1>             _Ty=CPTCensorStatusItem *,
1>             _Nodety=std::_Tree_node<std::pair<const std::string,CPTCensorStatusItem *>,void *> *,
1>             _Valty=std::pair<const std::string,CPTCensorStatusItem *> &
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1163): 参见对正在编译的函数模板实例化“std::_Tree_iterator<_Mytree> std::_Tree<_Traits>::_Insert_hint<std::pair<_Ty1,_Ty2>&,std::_Tree_node<_Value_type,_Voidptr>*>(std::_Tree_const_iterator<_Mytree>,_Valty,_Nodety)”的引用
1>       with
1>       [
1>             _Mytree=std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Ty1=const std::string,
1>             _Ty2=CPTCensorStatusItem *,
1>             _Value_type=std::pair<const std::string,CPTCensorStatusItem *>,
1>             _Voidptr=void *,
1>             _Valty=std::pair<const std::string,CPTCensorStatusItem *> &,
1>             _Nodety=std::_Tree_node<std::pair<const std::string,CPTCensorStatusItem *>,void *> *
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\xtree(1163): 参见对正在编译的函数模板实例化“std::_Tree_iterator<_Mytree> std::_Tree<_Traits>::_Insert_hint<std::pair<_Ty1,_Ty2>&,std::_Tree_node<_Value_type,_Voidptr>*>(std::_Tree_const_iterator<_Mytree>,_Valty,_Nodety)”的引用
1>       with
1>       [
1>             _Mytree=std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Ty1=const std::string,
1>             _Ty2=CPTCensorStatusItem *,
1>             _Value_type=std::pair<const std::string,CPTCensorStatusItem *>,
1>             _Voidptr=void *,
1>             _Valty=std::pair<const std::string,CPTCensorStatusItem *> &,
1>             _Nodety=std::_Tree_node<std::pair<const std::string,CPTCensorStatusItem *>,void *> *
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\map(181): 参见对正在编译的函数模板实例化“std::_Tree_iterator<_Mytree> std::_Tree<_Traits>::insert<std::pair<_Ty1,_Ty2>>(std::_Tree_const_iterator<_Mytree>,_Valty &&)”的引用
1>       with
1>       [
1>             _Mytree=std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Ty1=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
1>             _Ty2=CPTCensorStatusItem *,
1>             _Valty=std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char>>,CPTCensorStatusItem *>
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\map(181): 参见对正在编译的函数模板实例化“std::_Tree_iterator<_Mytree> std::_Tree<_Traits>::insert<std::pair<_Ty1,_Ty2>>(std::_Tree_const_iterator<_Mytree>,_Valty &&)”的引用
1>       with
1>       [
1>             _Mytree=std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string,CPTCensorStatusItem *>>>,
1>             _Traits=std::_Tmap_traits<std::string,CPTCensorStatusItem *,CGraphFrame::Compare<std::string>,std::allocator<std::pair<const std::string,CPTCensorStatusItem *>>,false>,
1>             _Ty1=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
1>             _Ty2=CPTCensorStatusItem *,
1>             _Valty=std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char>>,CPTCensorStatusItem *>
1>       ]
1>       C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\map(174): 编译类模板成员函数“CPTCensorStatusItem *&std::map<_Kty,_Ty,_Pr>::operator [](std::basic_string<_Elem,_Traits,_Alloc> &&)”时
1>       with
1>       [
1>             _Kty=std::string,
1>             _Ty=CPTCensorStatusItem *,
1>             _Pr=CGraphFrame::Compare<std::string>,
1>             _Elem=char,
1>             _Traits=std::char_traits<char>,
1>             _Alloc=std::allocator<char>
1>       ]
1>       d:\xxx.h(104): 参见对正在编译的函数模板实例化“CPTCensorStatusItem *&std::map<_Kty,_Ty,_Pr>::operator [](std::basic_string<_Elem,_Traits,_Alloc> &&)”的引用
1>       with
1>       [
1>             _Kty=std::string,
1>             _Ty=CPTCensorStatusItem *,
1>             _Pr=CGraphFrame::Compare<std::string>,
1>             _Elem=char,
1>             _Traits=std::char_traits<char>,
1>             _Alloc=std::allocator<char>
1>       ]
1>       d:\xxx.h(94): 参见对正在编译的类模板实例化“std::map<_Kty,_Ty,_Pr>”的引用
1>       with
1>       [
1>             _Kty=std::string,
1>             _Ty=CPTCensorStatusItem *,
1>             _Pr=CGraphFrame::Compare<std::string>
1>       ]

极有可能的原因：少了 #include <string>
（注意，不是string.h，如果包含了string.h，请改为string）

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