C++ 函数返回对象时并没有调用拷贝构造函数

#include <iostream>
#include <vector>
#include <string.h>
 
using namespace std;
 
class CTest {
public:
    CTest() {
        cout << "CTest construct" << endl;
        data = new char[10];
        strncpy(data, "hello", 10);
    }   
    
    CTest(const CTest& test) {
        cout << "copy contruct" << endl;
        data = new char[10];
        memcpy(data, test.data, 10);
    }   
 
    ~CTest() {
        cout << "CTest destruct" << endl;
        delete data;
        data = NULL;
    }   
 
public:
        char *data;
};
 
 
CTest GetTest() {
    CTest test;
    return test;
}
 
int main(int argc, char** argv) {
    
    GetTest();
    return 0;
}