为什么Xcode不能识别这个.cpp文件中的free（）和malloc（）？

Question

我的项目中有很多.cpp文件可以工作。但是这个刺激Xcode或编译器。

它不承认free()和malloc()但这也是C.什么可能是错误的？

页眉ssdpmessage.h看起来是这样的：

#ifndef _SSDPMESSAGE_H 
#define _SSDPMESSAGE_H 

#include "ssdptools.h" 
#include <vector> 
#include <arpa/inet.h> 
#include "ssdpdb.h" 

class SSDPMessage{ 
public: 
    SSDPMessage(); 
    virtual ~SSDPMessage(); 
    //What type of message can we handle 
    virtual SSDP_TYPE GetType()=0; 
    //Get the message dignature implemented in this class 
    virtual std::vector<SSDP_HTTP_HEADER*> GetHeaderSignature(); 
    //Can this class parse the message with this signature ? 
    virtual u8 CanProcess(std::vector<SSDP_HTTP_HEADER*> msgheaders); 
    //Process the message, return value: 
    //0 : processed 
    //1 : not for me, search for another to process 
    //<0 : message was for me but there is an error 
    virtual int Process(struct sockaddr* sender, std::vector<SSDP_HTTP_HEADER*> msgheaders)=0; 
    //ReInit all members 
    virtual void ReInit()=0; 
    virtual SSDPDB* GetDB(); 
    virtual void SetDB(SSDPDB* db); 
private: 
    std::vector<SSDP_HTTP_HEADER*> mHeaderSignature; 
protected: 
    int AddSignatureHeader(char* fieldname, char* fieldvalue); 
    SSDPDB *mDB; 
private: 
    SSDPMessage(const SSDPMessage &src); 
    SSDPMessage& operator= (const SSDPMessage &src);    
}; 


#endif //_SSDPMESSAGE_H 

的包括和ssdpmessage.cpp看起来像这样受影响的代码：

#include "ssdpmessage.h" 

SSDPMessage::SSDPMessage():mDB(NULL){ 
} 

SSDPMessage::~SSDPMessage(){ 
    std::vector<SSDP_HTTP_HEADER*>::iterator it; 
    for(it=mHeaderSignature.begin(); it<mHeaderSignature.end(); it++){ 
     free(*it); 
    } 
    mHeaderSignature.clear(); 
} 



int SSDPMessage::AddSignatureHeader(char* fieldname, char* fieldvalue){ 
    SSDP_HTTP_HEADER *thisHeader = (SSDP_HTTP_HEADER*)malloc(sizeof(SSDP_HTTP_HEADER)); 
    thisHeader->fieldname = (u8*)fieldname; 
    thisHeader->fieldnamelen = strlen(fieldname); 
    thisHeader->fieldvalue = (u8*)fieldvalue; 
    thisHeader->fieldvaluelen = strlen(fieldvalue); 
    mHeaderSignature.push_back(thisHeader);   
    return mHeaderSignature.size(); 
} 

这是代码来自 upnpx库。它在图书馆的演示项目中没有问题。

Answer 1

malloc要求您包括cstdlib。