爲什麼Xcode不能識別這個.cpp文件中的free（）和malloc（）？

Question

我的項目中有很多.cpp文件可以工作。但是這個刺激Xcode或編譯器。

它不承認free()和malloc()但這也是C.什麼可能是錯誤的？

頁眉ssdpmessage.h看起來是這樣的：

#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看起來像這樣受影響的代碼：

#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(); 
} 

這是代碼來自 upnpx庫。它在圖書館的演示項目中沒有問題。

Answer 1

malloc要求您包括cstdlib。