关于宏与头文件错误的冲突问题的解决
宏与头文件错误的冲突问题
程序如下：
// SisSocket.cpp : implementation file
//
#include "stdafx.h"
#include "DataServer.h"
#include "SisSocket.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include "DataServerDlg.h"
//...其他代码
// DataServerDlg.cpp : implementation file
//
#include "stdafx.h"
#include "DataServer.h"
#include "DataServerDlg.h"
#include "EzDnaApi.h"
#include "EzDnaServApi.h"
#include "SafeArrayHelper.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
//...其他代码
编译错误如：
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2061: syntax error :
identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2091: function
returns function
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2809: 'operator new'
has no formal parameters
等类似错误
双击错误
inline void *__cdecl operator new(size_t, void *_P)
{return (_P);
经指点，将
// SisSocket.cpp : implementation file
//
#include "stdafx.h"
#include "DataServer.h"
#include "SisSocket.h"
#include "DataServerDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
//...其他代码
问题解决，出在new重定义上
注：THIS_FILE为static char[]，在debug时内容为本文件路径，供输出错误信息使用。
//-----------------------------------------------------------------------
在文件test7Dlg.cpp当有如下定义时：
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include <vector>
就会出现如下错误：
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2809: 'operator new' has no formal parameters
c:\program files\microsoft visual studio\vc98\include\new(36) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(37) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\new(37) : error C2556: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,const struct std::nothrow_t &)' : overloaded function differs only by return type from 'void *(__cdecl *__cdecl op
erator new(void))(unsigned int)'
c:\program files\microsoft visual studio\vc98\include\new(35) : see declaration of 'new'
c:\program files\microsoft visual studio\vc98\include\new(41) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(42) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\new(42) : error C2556: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,void *)' : overloaded function differs only by return type from 'void *(__cdecl *__cdecl operator new(void))(unsig
ned int)'
c:\program files\microsoft visual studio\vc98\include\new(35) : see declaration of 'new'
c:\program files\microsoft visual studio\vc98\include\new(42) : error C2809: 'operator new' has no formal parameters
c:\program files\microsoft visual studio\vc98\include\new(42) : error C2065: '_P' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\memory(16) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2784: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' : could not deduce template argument for 'void *(__cdecl *)(u
nsigned int,class std::allocator<_Ty> &)' from 'void *(__cdecl *)(unsigned int)'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2785: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' and 'void *(__cdecl *__cdecl operator new(void))(unsigned int
)' have different return types
c:\program files\microsoft visual studio\vc98\include\memory(16) : see declaration of 'new'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2809: 'operator new' has no formal parameters
c:\program files\microsoft visual studio\vc98\include\memory(20) : error C2954: template definitions cannot nest
Error executing cl.exe.
解决办法：
1。把#include <vector>语句放在test7Dlg.h文件中
2。把定义顺序颠倒下，如下所示：
#include <vector>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
原因：
VC6是可以支持的，不过头文件的声明
#include <list>
using namespace std;
要在系统生成的代码
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
之前