C++11的初始化列表的一个有关问题,编译异常

C++11的初始化列表的一个问题,编译错误

C/C++ code


#include<cstdio>
#include<functional>
#include<vector>
#include<memory>
using namespace std;
struct s{
    int i;
    s():i(22){printf("ctor\n");}
    s(const s&ss){i=ss.i;}
    s& operator=(const s&ss){i=ss.i;return *this;}
};
struct a{
    int i;
    int j;
    int k;
};
struct c1{
    int i;
    int j;
    int k;
    c1( std::initializer_list<int> list ){
    }
};
struct c2: c1
    c2( std::initializer_list<int> list )
        :c1( list ){
    }
};
struct is{
    virtual void f()=0;
}
constexpr int GetFour(){ return 4; }
int main(void){
    vector<s> buf(3);
    for(s x:buf){
        printf("%d\n",x.i);
    }
    const int i=2;
    char pc[i];
    short ps[GetFour()];
    a a1={1,2,3};
    c2 obj{1,2,3};
    return 0;
}

我在mingw9.0+GCC4.7编译:

////////////////////
D:\>g++ my.cpp
my.cpp:24:2: error: expected '{' before 'c2'
my.cpp:23:1: error: new types may not be defined in a return type
my.cpp:23:1: note: (perhaps a semicolon is missing after the definition of '<typ
e error>')
my.cpp: In function 'int c2(std::initializer_list<int>)':
my.cpp:25:7: error: only constructors take member initializers
my.cpp: At global scope:
my.cpp:27:1: error: expected declaration before '}' token

究竟错在哪里?

------解决方案--------------------
24： struct c2: c1 “{”

31： }“;”

C++11的初始化列表的一个有关问题,编译异常

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