VS 2017 错误 C2664 地图插入尝试

class   Thread
{
Sync::TYPE  sync;       // synchronous start/finish
char        name[256];  // thread name
thread      handle;     // thread handle
HANDLE      abort,      // abort event handle
start;      // start event handle
public:
Thread(const char *desc,Sync::TYPE ctrl,void (*fn)(void *),void *arg=NULL);
Thread(Thread &th);
Thread(void);
~Thread(void);
HANDLE      AbortHandle(void) const     { return(abort); }
HANDLE      StartHandle(void) const     { return(start); }
thread::id  ID(void) const          { return(handle.get_id()); }
void        Name(const char *value);
const   char    *Name(void) const       { return(name); }
void        Sync(Sync::TYPE value)      { sync=value; }
Sync::TYPE  Sync(void) const        { return(sync); }
thread      *ThreadHandle(void)     { return(&handle); }
Thread      &operator=(Thread &th);
};
class   ThreadList
{
map<thread::id,Thread>  TiL;
public:
ThreadList(void);
~ThreadList(void);
HANDLE                  AbortHandle(void);
void                    Clear(void);
bool                    Close(thread::id id);
void                    Close(map<thread::id,Thread>::iterator pos);
map<thread::id,Thread>::iterator    Create(char *name,Sync::TYPE sync,void (*function)(void*),void *arg=NULL);
map<thread::id,Thread>::iterator    Find(thread::id id)             { return(TiL.find(id)); }
int                 Size(void) const                { return(TiL.size()); }
void                    Start(map<thread::id,Thread>::iterator pos);
HANDLE                  StartHandle(void);
};

现在，此代码生成错误：

map<thread::id,Thread>::iterator    ThreadList::Create(char *name,Sync::TYPE sync,void (*function)(void*),void *arg)
{
pair<map<thread::id,Thread>::iterator,bool> result;
thread::id                  id;
Thread                      th(name,sync,function,arg);
id=th.ThreadHandle()->get_id();
**result=TiL.insert(make_pair(id,th));**
return(result.first);
}

故障行以粗体显示。确切的错误消息是这样的：

错误 C2664： 'std：：_Tree_iterator>> std：：_Tree>：：insert(std：：_Tree_const_iterator>>，const std：:p air &("：无法将参数 1 从"std：:p air"转换为"std：:p air &&&">

我在这里做错了什么？

亲切的问候，瓦迪姆。

PS：对不起，我应该澄清那一刻。还有这些定义：

Thread::Thread(Thread &th)
{
sync=th.sync;
StrCopy(name,sizeof(name),th.name);
abort=th.abort;
start=th.start;
handle=move(th.handle);
}
Thread  &Thread::operator=(Thread &th)
{
sync=th.sync;
StrCopy(name,sizeof(name),th.name);
abort=th.abort;
start=th.start;
handle=move(th.handle);
return(*this);
}