OpenForum RSS: check valid returned reference

check valid returned reference (pavlinux)

Fri, 02 Mar 2012 18:50:02 GMT

> ��!
> ��, � �� :
> [code]
> char* f()
> {
> char *ch = new(nothrow) char[1];
> return (ch)? ch : -1;
> }
> [/code]

�� ++ �� ??? �� ޣ, �� , �� ?

check valid returned reference (Alex_S)

Thu, 01 Mar 2012 23:30:32 GMT

> facepalm. �� ...

�� .. ��, �� ;)

check valid returned reference (del)

Fri, 24 Feb 2012 10:11:37 GMT

>[�� ]
> class A;
> A& f()
> {
> A a;
> return a;
> }
> [/code]
> �� ,
> �� -1 ?
> ��

facepalm. �� ...

check valid returned reference (Alex)

Mon, 02 Jan 2012 08:15:16 GMT

> �� - ��
> �� .
> ��, �� - �� , �� ,
> �� , � �� ! ��
> �� , �� , �� , ��
> �� , �� .
> �� : �� ?

�� , �� . � �� -�� get,set, reset, close, ��. �� .

class A{
char *i;
public:
A(){i=NULL;};
char *get(){if(i!=NULL) return i; else return NULL;}
char set(char &str){
if(str != NULL){if(i!=NULL) i = str; else{ delete[] i; i = str}}
}
char close(){delete[] i; i = NULL;}
};

�� - �� "��" �� , � �� close, � �� , �� - ��

check valid returned reference (handler2006)

Sun, 01 Jan 2012 18:21:30 GMT

�� - �� .
��, �� - �� , �� , �� , � �� ! �� , �� , �� , �� , �� .
�� : �� ?

check valid returned reference (Alex)

Sun, 01 Jan 2012 14:01:58 GMT

>[�� ]
> class A;
> A& f()
> {
> A a;
> return a;
> }
> [/code]
> �� ,
> �� -1 ?
> ��

��-�� "return a;", � "return &a;"

��-��: �� , ��. �� "return this;" ��